1
|
Yang G, Liu C, Chen P, Jiao S, Sun J, Liang Y, Cui L, Wang T, Gao X, Zhang Q, Chai X. Novel lignans from Syringa pinnatifolia and protective effect against H 2O 2-induced oxidative injury through regulating the expression of Nrf2/HO-1 in H9c2 cells. Bioorg Chem 2024; 152:107732. [PMID: 39178702 DOI: 10.1016/j.bioorg.2024.107732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/27/2024] [Accepted: 08/15/2024] [Indexed: 08/26/2024]
Abstract
Phytochemical analysis of the peeled stems of Syringa pinnatifolia Hemsl. led to the discovery of 13 undescribed lignans, namely helanols A and B (1 and 2) and alashanenols W-G1 (3-13), as well as four known analogues, of which helanols A and B were lignans with novel skeleton of α-β' linkage. The structures were unambiguously established by extensive spectroscopic analyses, NMR calculations, ECD calculations, and single crystal X-ray crystallography. Five lignans (1, 2, 5, 11 and 13) exhibited a moderate protective effect against H2O2-induced oxidative injuries in H9c2 cells with the protective rates of 11.3-20.6 % at the concentration of 0.3-20 μM, while the positive control quercetin showed protective rates of 58.7 % at 10 μM. Further mechanism investigation suggested that 1 and 2 exerted the protective effect by regulating the expression of Nrf2/HO-1.
Collapse
Affiliation(s)
- Guodong Yang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Panlong Chen
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Jingjing Sun
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China; Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, PR China
| | - Yana Liang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Lingwen Cui
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Tao Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Qingying Zhang
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, PR China.
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China; Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, PR China.
| |
Collapse
|
2
|
Jubilee R, Komala M, Patel S. Therapeutic Potential of Resveratrol and Lignans in the Management of Tuberculosis. Cell Biochem Biophys 2024:10.1007/s12013-024-01378-7. [PMID: 38914838 DOI: 10.1007/s12013-024-01378-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2024] [Indexed: 06/26/2024]
Abstract
This study aims to investigate the therapeutic potential of herbal remedies, specifically resveratrol and lignans, as alternative treatments for tuberculosis (TB), given the challenges posed by drug-resistant strains and adverse effects of conventional therapies. A comprehensive review of the literature was conducted to analyze the mechanisms of action, safety profiles, and efficacy of resveratrol and lignans in the context of TB management. This review focused on the bactericidal and bacteriostatic effects of these compounds, examining their interaction with Mycobacterium tuberculosis within macrophages. Resveratrol and lignans were found to exhibit significant antibacterial properties through mechanisms such as SIRT1 modulation, coenzyme A transferase inhibition, suppression of intracellular bacterial proliferation in macrophages, and induction of autophagy. These mechanisms contribute to their effectiveness in combating TB and highlight their potential as alternative therapeutic agents.
Collapse
Affiliation(s)
- R Jubilee
- Department of Pharmacology, Saveetha College of Pharmacy, Saveetha Institute of Medical and Technical Sciences, (Deemed to be University), Saveetha Nagar, Chennai, India
| | - M Komala
- Department of Pharmaceutical Pharmaceutics, School of Pharmaceutical Sciences, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Pallavaram, Chennai, Tamil Nadu, India
| | - Saraswati Patel
- Department of Pharmacology, Saveetha College of Pharmacy, Saveetha Institute of Medical and Technical Sciences, (Deemed to be University), Saveetha Nagar, Chennai, India.
| |
Collapse
|
3
|
Giang LT, Park S, Lee S, Seo Y, Van Kiem P, Tai BH, Hang NTM, Thao VM, Van Cuong P, Ban NK, Cuong NT, Nhiem NX. Hepatoprotective Lignan Glycosides from the Leaves and Stems of Symplocos cochinchinensis (Lour.) S. Moore. Chem Biodivers 2024:e202400896. [PMID: 39140809 DOI: 10.1002/cbdv.202400896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Accepted: 06/21/2024] [Indexed: 08/15/2024]
Abstract
This study investigates Symplocos cochinchinensis (Lour.) S. Moore leaves and stems, commonly known as Symplocos, a plant indigenous to Asia renowned for its traditional use in holistic medicine. A comprehensive phytochemical analysis of S. cochinchinensis led to the isolation of two new lignans, namely symplolignans A and B (1 and 2) along with eleven known lignan glucosides: nortrachelogenin 4-O-β-D-glucopyranoside (3), nortracheloside (4), matairesinol 4-O-β-D-glucopyranoside (5), lariciresinol 4'-O-β-D-glucopyranoside (6), balanophonin 4-O-β-D-glucopyranoside (7), dehydrodiconiferyl alcohol 4-O-β-D-glucopyranoside (8), dehydrodiconiferyl alcohol γ'-O-β-D-glucopyranoside (9), 3-(β-D-glucopyranosyloxymethyl)-2-(4-hydroxy-3-methoxyphenyl)-5-(3-hydroxypropyl)-7-methoxy-(2R,3S)-dihydrobenzofura (10), and pinoresinol 4'-O-β-D-glucopyranoside (11). Their chemical structures were elucidated using 1D- and 2D-NMR, mass spectrometry, and their spectroscopic data were compared with those reported in literatures. Furthermore, all compounds were evaluated for their hepatoprotective effects using the Resazurin reduction assay in HepG2 hepatocellular carcinoma cells. Compounds 1, 5, 7, and 8 exhibited notable hepatoprotective efficacy, with cell viability ranging from 105.0±2.6 to 109.2±3.3 at a concentration of 10 μM. This research highlights the therapeutic potential of these compounds and enhanced to the understanding of lignans and neolignans in liver cell proliferation.
Collapse
Affiliation(s)
- Le Thi Giang
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
- Thai Nguyen University of Medicine and Pharmacy, 284 Luong Ngoc Quyen, Thai Nguyen, Viet Nam
| | - SeonJu Park
- Metropolitan Seoul Center, Korea Basic Science Institute, Seoul, 03579, Republic of Korea
| | - Sion Lee
- New Drug Development Center, Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub), Daegu, 41061, Korea
| | - Yohan Seo
- New Drug Development Center, Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub), Daegu, 41061, Korea
| | - Phan Van Kiem
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| | - Bui Huu Tai
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| | - Nguyen Thi Minh Hang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| | - Vu Mai Thao
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| | - Pham Van Cuong
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| | - Ninh Khac Ban
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| | - Nguyen The Cuong
- Institute of Ecology and Biological Resources, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| | - Nguyen Xuan Nhiem
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Viet Nam
| |
Collapse
|
4
|
Ushimaru R. Functions and mechanisms of enzymes assembling lignans and norlignans. Curr Opin Chem Biol 2024; 80:102462. [PMID: 38692182 DOI: 10.1016/j.cbpa.2024.102462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 05/03/2024]
Abstract
Lignans and norlignans are distributed throughout the plant kingdom and exhibit diverse chemical structures and biological properties that offer potential for therapeutic use. Originating from the phenylpropanoid biosynthesis pathway, their characteristic carbon architectures are formed through unique enzyme catalysis, featuring regio- and stereoselective C-C bond forming processes. Despite extensive research on these plant natural products, their biosynthetic pathways, and enzyme mechanisms remain enigmatic. This review highlights recent advancements in elucidating the functions and mechanisms of the biosynthetic enzymes responsible for constructing the distinct carbon frameworks of lignans and norlignans.
Collapse
Affiliation(s)
- Richiro Ushimaru
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan; Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo 113-8657, Japan.
| |
Collapse
|
5
|
Albadrani HM, Chauhan P, Ashique S, Babu MA, Iqbal D, Almutary AG, Abomughaid MM, Kamal M, Paiva-Santos AC, Alsaweed M, Hamed M, Sachdeva P, Dewanjee S, Jha SK, Ojha S, Slama P, Jha NK. Mechanistic insights into the potential role of dietary polyphenols and their nanoformulation in the management of Alzheimer's disease. Biomed Pharmacother 2024; 174:116376. [PMID: 38508080 DOI: 10.1016/j.biopha.2024.116376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 01/19/2024] [Accepted: 02/28/2024] [Indexed: 03/22/2024] Open
Abstract
Alzheimer's disease (AD) is a very common neurodegenerative disorder associated with memory loss and a progressive decline in cognitive activity. The two major pathophysiological factors responsible for AD are amyloid plaques (comprising amyloid-beta aggregates) and neurofibrillary tangles (consisting of hyperphosphorylated tau protein). Polyphenols, a class of naturally occurring compounds, are immensely beneficial for the treatment or management of various disorders and illnesses. Naturally occurring sources of polyphenols include plants and plant-based foods, such as fruits, herbs, tea, vegetables, coffee, red wine, and dark chocolate. Polyphenols have unique properties, such as being the major source of anti-oxidants and possessing anti-aging and anti-cancerous properties. Currently, dietary polyphenols have become a potential therapeutic approach for the management of AD, depending on various research findings. Dietary polyphenols can be an effective strategy to tackle multifactorial events that occur with AD. For instance, naturally occurring polyphenols have been reported to exhibit neuroprotection by modulating the Aβ biogenesis pathway in AD. Many nanoformulations have been established to enhance the bioavailability of polyphenols, with nanonization being the most promising. This review comprehensively provides mechanistic insights into the neuroprotective potential of dietary polyphenols in treating AD. It also reviews the usability of dietary polyphenol as nanoformulation for AD treatment.
Collapse
Affiliation(s)
- Hind Muteb Albadrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Eastern Province 34212, Saudi Arabia
| | - Payal Chauhan
- Department of Pharmaceutical Sciences, Maharshi Dayanad University, Rohtak, Haryana 124001, India
| | - Sumel Ashique
- Department of Pharmaceutical Sciences, Bengal College of Pharmaceutical Sciences & Research, Durgapur 713212, West Bengal, India
| | - M Arockia Babu
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Danish Iqbal
- Department of Health Information Management, College of Applied Medical Sciences, Buraydah Private Colleges, Buraydah 51418, Saudi Arabia
| | - Abdulmajeed G Almutary
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi, United Arab Emirates
| | - Mosleh Mohammad Abomughaid
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Saudi Arabia
| | - Mehnaz Kamal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Ana Cláudia Paiva-Santos
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Mohammed Alsaweed
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al-Majmaah 11952, Saudi Arabia.
| | - Munerah Hamed
- Department of Pathology, Faculty of Medicine, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | | | - Saikat Dewanjee
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Saurabh Kumar Jha
- Department of Zoology, Kalindi College, University of Delhi, 110008, India
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Petr Slama
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic.
| | - Niraj Kumar Jha
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India; Centre of Research Impact and Outcome, Chitkara University, Rajpura- 140401, Punjab, India.; School of Bioengineering & Biosciences, Lovely Professional University, Phagwara 144411, India; Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun, India.
| |
Collapse
|
6
|
Gayke M, Narode H, Bhosale RS, Yadav JS. Stereoselective total synthesis of arachnid harvestmen natural product: (4 S,5 S)‑4-hydroxy-γ-decalactone. Nat Prod Res 2024; 38:1168-1176. [PMID: 36263971 DOI: 10.1080/14786419.2022.2135000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/14/2022] [Accepted: 10/05/2022] [Indexed: 10/24/2022]
Abstract
Herein, we described the novel synthetic strategy for the total synthesis of harvestmen natural product (4S,5S)‑4-hydroxy-γ-decalactone (minor) from an inexpensive precursor ((R)-2,2-dimethyl-1,3-dioxolane-4-carbaldehyde) with 31% overall yield. Hydroxy-γ-lactones represent a special class of harvestmen exocrine defense compounds. The present convergent synthesis utilizes classical reactions like the Barbier reaction, the Grignard reaction, and the employment of an olefin as a masked carboxylic acid functionality followed by lactone formation as key steps.
Collapse
Affiliation(s)
- Manoj Gayke
- Department of Chemistry, School of Science, Indrashil University, Rajpur Mehsana, Gujarat, 382715, India
| | - Hanuman Narode
- Department of Chemistry, School of Science, Indrashil University, Rajpur Mehsana, Gujarat, 382715, India
| | - Rajesh S Bhosale
- Department of Chemistry, School of Science, Indrashil University, Rajpur Mehsana, Gujarat, 382715, India
| | - Jhillu Singh Yadav
- Department of Chemistry, School of Science, Indrashil University, Rajpur Mehsana, Gujarat, 382715, India
| |
Collapse
|
7
|
Jia ZH, Pilkington LI, Barker D. Total Syntheses and Absolute Stereochemical Correction of Negundin B, Vitexin 1, and Vitexin 6. J Org Chem 2024; 89:3644-3651. [PMID: 38377490 DOI: 10.1021/acs.joc.3c02751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
A highly adaptable asymmetric synthetic route toward dihydronaphthalene lignans was developed, with its application to the syntheses of negundin B and vitexin 1/6 described herein. This developed pathway proceeded through an enantioselective aldol reaction to establish the contiguous stereocenters present in the final structures with subsequent functional group transformations yielding (-)-negundin B and (-)-vitexin 1/6. The enantioselective synthesis of vitexin 1/6 allowed the correction of absolute configuration, which has been widely incorrectly reported.
Collapse
Affiliation(s)
- Zong Hao Jia
- School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
| | - Lisa I Pilkington
- School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand
- Te Pu̅naha Matatini, Auckland 1010, New Zealand
| | - David Barker
- School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6012, New Zealand
| |
Collapse
|
8
|
Liu Y, Shi Y, Zhang M, Han F, Liao W, Duan X. Natural polyphenols for drug delivery and tissue engineering construction: A review. Eur J Med Chem 2024; 266:116141. [PMID: 38237341 DOI: 10.1016/j.ejmech.2024.116141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 02/05/2024]
Abstract
Polyphenols, natural compounds rich in phenolic structures, are gaining prominence due to their antioxidant, anti-inflammatory, antibacterial, and anticancer properties, making them valuable in biomedical applications. Through covalent and noncovalent interactions, polyphenols can bind to biomaterials, enhancing their performance and compensating for their shortcomings. Such polyphenol-based biomaterials not only increase the efficacy of polyphenols but also improve drug stability, control release kinetics, and boost the therapeutic effects of drugs. They offer the potential for targeted drug delivery, reducing off-target impacts and enhancing therapeutic outcomes. In tissue engineering, polyphenols promote cell adhesion, proliferation, and differentiation, thus aiding in the formation of functional tissues. Additionally, they offer excellent biocompatibility and mechanical strength, essential in designing scaffolds. This review explores the significant roles of polyphenols in tissue engineering and drug delivery, emphasizing their potential in advancing biomedical research and healthcare.
Collapse
Affiliation(s)
- Yu Liu
- Clinical Medical College/Affiliated Hospital of Jiujiang University, Jiangxi, China; Jiujiang Clinical Precision Medicine Research Center, Jiangxi, China; Medical College of Jiujiang University, Jiangxi, China
| | - Yuying Shi
- Clinical Medical College/Affiliated Hospital of Jiujiang University, Jiangxi, China; Jiujiang Clinical Precision Medicine Research Center, Jiangxi, China; Medical College of Jiujiang University, Jiangxi, China
| | - Mengqi Zhang
- Clinical Medical College/Affiliated Hospital of Jiujiang University, Jiangxi, China; Jiujiang Clinical Precision Medicine Research Center, Jiangxi, China; Medical College of Jiujiang University, Jiangxi, China
| | - Feng Han
- Clinical Medical College/Affiliated Hospital of Jiujiang University, Jiangxi, China; Jiujiang Clinical Precision Medicine Research Center, Jiangxi, China; Medical College of Jiujiang University, Jiangxi, China
| | - Weifang Liao
- Clinical Medical College/Affiliated Hospital of Jiujiang University, Jiangxi, China; Jiujiang Clinical Precision Medicine Research Center, Jiangxi, China; Medical College of Jiujiang University, Jiangxi, China
| | - Xunxin Duan
- Clinical Medical College/Affiliated Hospital of Jiujiang University, Jiangxi, China; Jiujiang Clinical Precision Medicine Research Center, Jiangxi, China; Medical College of Jiujiang University, Jiangxi, China.
| |
Collapse
|
9
|
Choi H, Han J, Choi J, Lee K. Divergent Syntheses of (-)-Chicanine, (+)-Fragransin A 2, (+)-Galbelgin, (+)-Talaumidin, and (+)-Galbacin via One-Pot Homologative γ-Butyrolactonization. Molecules 2024; 29:701. [PMID: 38338445 PMCID: PMC10856021 DOI: 10.3390/molecules29030701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
In this study, the divergent syntheses of (-)-chicanine, (+)-fragransin A2, (+)-galbelgin, (+)-talaumidin, and (+)-galbacin are detailed. In this approach, an early-stage modified Kowalski one-carbon homologation reaction is utilized to construct the central γ-butyrolactone framework with the two necessary β,γ-vicinal stereogenic centers. The two common chiral γ-butyrolactone intermediates were designed to be capable for assembling five different optically active tetrahydrofuran lignans from commercially available materials in a concise and effective divergent manner in five to eight steps. These five syntheses are among the shortest and highest-yielding syntheses reported to date.
Collapse
Affiliation(s)
| | | | | | - Kiyoun Lee
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Republic of Korea; (H.C.); (J.H.); (J.C.)
| |
Collapse
|
10
|
Kobayashi K, Yamamura M, Mikami B, Shiraishi A, Kumatani M, Satake H, Ono E, Umezawa T. Anthriscus sylvestris Deoxypodophyllotoxin Synthase Involved in the Podophyllotoxin Biosynthesis. PLANT & CELL PHYSIOLOGY 2023; 64:1436-1448. [PMID: 37948767 DOI: 10.1093/pcp/pcad103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 08/28/2023] [Accepted: 09/14/2023] [Indexed: 11/12/2023]
Abstract
Tetrahydrofuran ring formation from dibenzylbutyrolactone lignans is a key step in the biosynthesis of aryltetralin lignans including deoxypodophyllotoxin and podophyllotoxin. Previously, Fe(II)- and 2-oxoglutarate-dependent dioxygenase (2-ODD) from Podophyllum hexandrum (Himalayan mayapple, Berberidaceae) was found to catalyze the cyclization of a dibenzylbutyrolactone lignan, yatein, to give deoxypodophyllotoxin and designated as deoxypodophyllotoxin synthase (DPS). Recently, we reported that the biosynthesis of deoxypodophyllotoxin and podophyllotoxin evolved in a lineage-specific manner in phylogenetically unrelated plant species such as P. hexandrum and Anthriscus sylvestris (cow parsley, Apiaceae). Therefore, a comprehensive understanding of the characteristics of DPSs that catalyze the cyclization of yatein to deoxypodophyllotoxin in various plant species is important. However, for plant species other than P. hexandrum, the isolation of the DPS enzyme gene and the type of the enzyme, e.g. whether it is 2-ODD or another type of enzyme such as cytochrome P-450, have not been reported. In this study, we report the identification and characterization of A. sylvestris DPS (AsDPS). Phylogenetic analysis showed that AsDPS belonged to the 2-ODD superfamily and shared moderate amino acid sequence identity (40.8%) with P. hexandrum deoxypodophyllotoxin synthase (PhDPS). Recombinant protein assay indicated that AsDPS and PhDPS differ in terms of the selectivity of substrate enantiomers. Protein modeling using AlphaFold2 and site-directed mutagenesis indicated that the Tyr305 residue of AsDPS probably contributes to substrate recognition. This study advances our understanding of the podophyllotoxin biosynthetic pathway in A. sylvestris and provides new insight into 2-ODD involved in plant secondary (specialized) metabolism.
Collapse
Affiliation(s)
- Keisuke Kobayashi
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan
| | - Masaomi Yamamura
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan
- Faculty of Bioscience and Bioindustry, Tokushima University, 2-1, Minami-josanjima-cho, Tokushima, 770-8502 Japan
| | - Bunzo Mikami
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan
| | - Akira Shiraishi
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto, 619-0284 Japan
| | - Masato Kumatani
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan
| | - Honoo Satake
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto, 619-0284 Japan
| | - Eiichiro Ono
- Research Institute, Suntory Global Innovation Center Ltd., 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto, 619-0284 Japan
| | - Toshiaki Umezawa
- Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan
| |
Collapse
|
11
|
Falev DI, Voronov IS, Onuchina AA, Faleva AV, Ul’yanovskii NV, Kosyakov DS. Analysis of Softwood Lignans by Comprehensive Two-Dimensional Liquid Chromatography. Molecules 2023; 28:8114. [PMID: 38138599 PMCID: PMC10745517 DOI: 10.3390/molecules28248114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
Lignans constitute a large group of phenolic plant secondary metabolites possessing high bioactivity. Their accurate determination in plant extracts with a complex chemical composition is challenging and requires advanced separation techniques. In the present study, a new approach to the determination of lignans in coniferous knotwood extracts as the promising industrial-scale source of such compounds based on comprehensive two-dimensional liquid chromatography separation and UV spectrophotometric detection is proposed. First and second-dimension column screening showed that the best results can be obtained using a combination of non-polar and polar hydroxy group embedded octadecyl stationary phases with moderate (~40%) "orthogonality". The optimization of LC × LC separation conditions allowed for the development of a new method for the quantification of the five lignans (secoisolariciresinol, matairesinol, pinoresinol, 7-hydroxymatairesinol, and nortrachelogenin) in knotwood extracts with limits of quantification in the range of 0.27-0.95 mg L-1 and a linear concentration range covering at least two orders of magnitude. Testing the developed method on coniferous (larch, fir, spruce, and pine) knotwood extracts demonstrated the high selectivity of the analysis and the advantages of LC × LC in the separation and accurate quantification of the compounds co-eluting in one-dimensional HPLC.
Collapse
Affiliation(s)
- Danil I. Falev
- Laboratory of Natural Compounds Chemistry and Bioanalytics, Core Facility Center “Arktika”, M.V. Lomonosov Northern (Arctic) Federal University, Northern Dvina Emb. 17, 163002 Arkhangelsk, Russia; (I.S.V.); (A.A.O.); (A.V.F.); (D.S.K.)
| | | | | | | | - Nikolay V. Ul’yanovskii
- Laboratory of Natural Compounds Chemistry and Bioanalytics, Core Facility Center “Arktika”, M.V. Lomonosov Northern (Arctic) Federal University, Northern Dvina Emb. 17, 163002 Arkhangelsk, Russia; (I.S.V.); (A.A.O.); (A.V.F.); (D.S.K.)
| | | |
Collapse
|
12
|
Yaragorla S, Ithu SR, Arun D, Srivardhan V. Calcium-Catalyzed Synthesis of Fused Furo[2,3- b]furans and Substituted Furans from 2-Oxo Aldehydes and Cyclic Enols. J Org Chem 2023. [PMID: 38039073 DOI: 10.1021/acs.joc.3c01508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
We report here an atom-economical, syn-diastereoselective synthesis of naphtho-fused furo[2,3-b]furans along with naphthofurans at room temperature using readily available 2-naphthols and 2-oxo aldehydes using an alkaline earth catalyst [Ca(OTf)2]. 2-Oxo aldehydes having both aryl and alkyl substitutions reacted well. A good number of arenols responded to give fused furans, but selected arenols gave only furofurans. Synthetic applications and gram-scale synthesis were also demonstrated to strengthen this strategy.
Collapse
Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry, University of Hyderabad, P.O. Central University, Gachibowli, Hyderabad 500046, India
| | - Sanyasi Rao Ithu
- School of Chemistry, University of Hyderabad, P.O. Central University, Gachibowli, Hyderabad 500046, India
| | - Doma Arun
- School of Chemistry, University of Hyderabad, P.O. Central University, Gachibowli, Hyderabad 500046, India
| | - Valmuri Srivardhan
- School of Chemistry, University of Hyderabad, P.O. Central University, Gachibowli, Hyderabad 500046, India
| |
Collapse
|
13
|
Guo Y, Alvigini L, Saifuddin M, Ashley B, Trajkovic M, Alonso-Cotchico L, Mattevi A, Fraaije MW. One-Pot Biocatalytic Synthesis of rac-Syringaresinol from a Lignin-Derived Phenol. ACS Catal 2023; 13:14639-14649. [PMID: 38026814 PMCID: PMC10660655 DOI: 10.1021/acscatal.3c04399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023]
Abstract
The drive for a circular bioeconomy has resulted in a great demand for renewable, biobased chemicals. We present a one-pot biocatalytic cascade reaction for the production of racemic syringaresinol, a lignan with applications as a nutraceutical and in polymer chemistry. The process consumes dihydrosinapyl alcohol, which can be produced renewably from the lignocellulosic material. To achieve this, a variant of eugenol oxidase was engineered for the oxidation of dihydrosinapyl alcohol into sinapyl alcohol with good conversion and chemoselectivity. The crystal structure of the engineered oxidase revealed the molecular basis of the influence of the mutations on the chemoselectivity of the oxidation of dihydrosinapyl alcohol. By using horseradish peroxidase, the subsequent oxidative dimerization of sinapyl alcohol into syringaresinol was achieved. Conditions for the one-pot, two-enzyme synthesis were optimized, and a high yield of syringaresinol was achieved by cascading the oxidase and peroxidase steps in a stepwise fashion. This study demonstrates the efficient production of syringaresinol from a compound that can be renewed by reductive catalytic fractionation of lignocellulose, providing a biocatalytic route for generating a valuable compound from lignin.
Collapse
Affiliation(s)
- Yiming Guo
- Molecular
Enzymology Group, University of Groningen, Nijenborgh 4, Groningen, AG 9747, The Netherlands
| | - Laura Alvigini
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Via Ferrata 9, Pavia 27100, Italy
| | - Mohammad Saifuddin
- Molecular
Enzymology Group, University of Groningen, Nijenborgh 4, Groningen, AG 9747, The Netherlands
| | - Ben Ashley
- Molecular
Enzymology Group, University of Groningen, Nijenborgh 4, Groningen, AG 9747, The Netherlands
| | - Milos Trajkovic
- Molecular
Enzymology Group, University of Groningen, Nijenborgh 4, Groningen, AG 9747, The Netherlands
| | | | - Andrea Mattevi
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Via Ferrata 9, Pavia 27100, Italy
| | - Marco W. Fraaije
- Molecular
Enzymology Group, University of Groningen, Nijenborgh 4, Groningen, AG 9747, The Netherlands
| |
Collapse
|
14
|
Lee DH, Kim YK, Son Y, Park GH, Kwon HY, Park Y, Park EJ, Lee SY, Kim HJ. Multivariate Analysis among Marker Compounds, Environmental Factors, and Fruit Quality of Schisandra chinensis at Different Locations in South Korea. PLANTS (BASEL, SWITZERLAND) 2023; 12:3877. [PMID: 38005775 PMCID: PMC10675420 DOI: 10.3390/plants12223877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023]
Abstract
This study aimed to investigate the correlation among the contents of marker compounds, growth characteristics, and environmental factors of Schisandra chinensis fruits across South Korea. The fruits were collected from 36 cultivation sites in 28 regions across the country. We investigated nine growth characteristics, twelve soil physicochemical properties, eight meteorological data, and three marker compounds in this study. We optimized and validated an optimized method for quantifying marker compounds using UPLC and performed correlation analysis among the contents of marker compounds, growth characteristics, and environmental factors. The UPLC-UV method for analyzing marker compounds was validated by measuring linearity, LOD, LOQ, precision, and accuracy. The marker compounds were negatively correlated with the fruit size and sugar contents, and growth characteristics were negatively correlated with some physicochemical properties of the soil. The results of this study can be used as basic data for the standard cultural practices and quality control of S. chinensis fruits.
Collapse
Affiliation(s)
- Dong Hwan Lee
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju-si 36040, Republic of Korea; (D.H.L.); (Y.-K.K.); (Y.S.); (G.H.P.); (H.-Y.K.); (S.-Y.L.)
| | - Young-Ki Kim
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju-si 36040, Republic of Korea; (D.H.L.); (Y.-K.K.); (Y.S.); (G.H.P.); (H.-Y.K.); (S.-Y.L.)
| | - Yonghwan Son
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju-si 36040, Republic of Korea; (D.H.L.); (Y.-K.K.); (Y.S.); (G.H.P.); (H.-Y.K.); (S.-Y.L.)
| | - Gwang Hun Park
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju-si 36040, Republic of Korea; (D.H.L.); (Y.-K.K.); (Y.S.); (G.H.P.); (H.-Y.K.); (S.-Y.L.)
| | - Hae-Yun Kwon
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju-si 36040, Republic of Korea; (D.H.L.); (Y.-K.K.); (Y.S.); (G.H.P.); (H.-Y.K.); (S.-Y.L.)
| | - Youngki Park
- Department of Forest Bioresources, National Institute of Forest Science, Suwon 16631, Republic of Korea; (Y.P.); (E.-J.P.)
| | - Eung-Jun Park
- Department of Forest Bioresources, National Institute of Forest Science, Suwon 16631, Republic of Korea; (Y.P.); (E.-J.P.)
| | - Sun-Young Lee
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju-si 36040, Republic of Korea; (D.H.L.); (Y.-K.K.); (Y.S.); (G.H.P.); (H.-Y.K.); (S.-Y.L.)
| | - Hyun-Jun Kim
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju-si 36040, Republic of Korea; (D.H.L.); (Y.-K.K.); (Y.S.); (G.H.P.); (H.-Y.K.); (S.-Y.L.)
| |
Collapse
|
15
|
Bera M, Sen B, Garai S, Hajra S. Organocatalytic aldol approach for the protecting group-free asymmetric synthesis of (7 R')-parabenzlactone, (-)-hinokinin, (-)-yatein, (-)-bursehernin, (-)-pluviatolide, (+)-isostegane and allied lignans. Org Biomol Chem 2023; 21:8749-8756. [PMID: 37873613 DOI: 10.1039/d3ob01446k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
A short and efficient catalytic asymmetric protection-free synthesis of dibenzylbutyrolactone lignans, such as (-)-hinokinin, (-)-yatein, (-)-bursehernin, (-)-pluviatolide, and their 7'-hydroxylignans - (7'R)-parabenzlactone, (7'R)-hydroxyyatein, (7'R)-hydroxybursehernin, and (7'R)-hydroxy pluviatolide, respectively, is described. The syntheses of (+)-isostegane and the formal synthesis of (-)-podophyllotoxin and bicubebins are also described. Organocatalytic aldol-reduction-lactonization and Pd/C-catalyzed hydrogenative debromination are two-pot sequential reactions for the enantioselective synthesis of hydroxybutyrolactone 13b with excellent diastereo- and enantioselectivity (dr 33 : 1 and >99% ee). The protecting group-free chemoselective α-alkylation of 13b directly led to 7'-hydroxydibenzylbutyrolactone lignans, followed by hydrogenative dehydroxylation, which led to their (deoxy) dibenzylbutyrolactone lignans, and the syntheses were completed in three to five steps from 6-bromopiperonal.
Collapse
Affiliation(s)
- Mainak Bera
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.
| | - Biswajit Sen
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.
| | - Sujay Garai
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.
| | - Saumen Hajra
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.
| |
Collapse
|
16
|
Bay MV, Nam PC, Hoa NT, Mechler A, Vo QV. Antiradical Activity of Lignans from Cleistanthus sumatranus: Theoretical Insights into the Mechanism, Kinetics, and Solvent Effects. ACS OMEGA 2023; 8:38668-38675. [PMID: 37867707 PMCID: PMC10586290 DOI: 10.1021/acsomega.3c05964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 09/22/2023] [Indexed: 10/24/2023]
Abstract
Sumatranus lignans (SL) isolated from Cleistanthus sumatranus have demonstrated bioactivities, e.g., they were shown to exhibit immunosuppressive properties in previous research. Their structure suggests potential antioxidant activity that has not attracted any attention thus far. Consistently, a comprehensive analysis of the antioxidant activity of these compounds is highly desirable with the view of prospective medical applications. In this work, the mechanism and kinetics of the antiradical properties of SL against hydroperoxyl radicals were studied by using calculations based on density functional theory (DFT). In the lipid medium, it was discovered that SL reacted with HOO• through the formal hydrogen transfer mechanism with a rate constant of 101-105 M-1 s-1, whereas in aqueous media, the activity primarily occurred through the sequential proton loss electron transfer mechanism with rate constants of 102-108 M-1 s-1. In both lipidic and aqueous environments, the antiradical activity of compounds 6 and 7 exceeds that of resveratrol, ascorbic acid, and Trolox. These substances are therefore predicted to be good radical scavengers in physiological environments.
Collapse
Affiliation(s)
- Mai Van Bay
- The
University of Danang - University of Science and Education, Danang 550000, Vietnam
| | - Pham Cam Nam
- The
University of Danang - University of Science and Technology, Danang 550000, Vietnam
| | - Nguyen Thi Hoa
- The
University of Danang - University of Technology and Education, Danang 550000, Vietnam
| | - Adam Mechler
- Department
of Biochemistry and Chemistry, La Trobe
University, Victoria 3086, Australia
| | - Quan V. Vo
- The
University of Danang - University of Technology and Education, Danang 550000, Vietnam
| |
Collapse
|
17
|
Lahtinen MH, Kynkäänniemi E, Jian C, Salonen A, Pajari AM, Mikkonen KS. Metabolic Fate of Lignin in Birch Glucuronoxylan Extracts as Dietary Fiber Studied in a Rat Model. Mol Nutr Food Res 2023; 67:e2300201. [PMID: 37650878 DOI: 10.1002/mnfr.202300201] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/09/2023] [Indexed: 09/01/2023]
Abstract
SCOPE While previously considered inert, recent studies suggest lignin metabolism with unknown metabolic fates is occurring in the gastrointestinal tract of several animal models. This study focuses on analyzing the potential metabolites of lignin. METHODS AND RESULTS The diets of rats include relatively pure birch glucuronoxylan (pureGX) with residual lignin or lignin-rich GX (GXpoly) in their diet. Nuclear magnetic spectroscopy of the lignin isolated from the GXpoly-fed rats fecal sample shows high alteration in chemical structure, whereas lignin-carbohydrate complexes (LCCs) are enriched in fecal samples from the pureGX group. Moreover, the increased syringyl-to-guaiacyl (S/G) ratio suggests that lignin G-units are predominantly metabolized based on pyrolysis gas chromatography-mass spectrometry (pyr-GC/MS). The presence of small phenolic metabolites identified in urine samples of the GXpoly group, for example, ferulic and sinapic acids, their sulfate and glucuronide derivatives, and 4-sulfobenzylalcohol, suggests that the small fragmented lignin metabolites in the large intestine enter the plasma, and are further processed in the liver. Finally, the relative abundances of polyphenol-degrading Enterorhabdus and Akkermansia in the gut microbiota are associated with lignin metabolism. CONCLUSION These findings give further evidence to lignin metabolism in the gut of nonruminants and provide insight to the potential microbes and metabolic routes.
Collapse
Affiliation(s)
- Maarit H Lahtinen
- Department of Food and Nutrition, University of Helsinki, P. O. Box 66, (Agnes Sjöbergin katu 2), FI-00014, Finland
| | - Emma Kynkäänniemi
- Department of Food and Nutrition, University of Helsinki, P. O. Box 66, (Agnes Sjöbergin katu 2), FI-00014, Finland
| | - Ching Jian
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, P. O. Box 63, FI-00014, Finland
| | - Anne Salonen
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, P. O. Box 63, FI-00014, Finland
| | - Anne-Maria Pajari
- Department of Food and Nutrition, University of Helsinki, P. O. Box 66, (Agnes Sjöbergin katu 2), FI-00014, Finland
| | - Kirsi S Mikkonen
- Department of Food and Nutrition, University of Helsinki, P. O. Box 66, (Agnes Sjöbergin katu 2), FI-00014, Finland
- Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, P.O. Box 65, FI-00014, Finland
| |
Collapse
|
18
|
Das K, Halder S. Synthesis of Functionalized Five-Membered Heterocycles from Epoxides: A Hydrogen-Bond Donor Catalytic Approach. J Org Chem 2023; 88:12872-12883. [PMID: 36007267 DOI: 10.1021/acs.joc.2c00902] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The synthesis of highly functionalized five-membered oxa- and aza-heterocycles has been reported utilizing hydrogen-bond donor (HBD) catalysis. In this method, an epoxide was taken as a substrate and reacted with functionalized arylidene/alkylidene malononitrile derivatives in the presence of a newly designed HBD catalyst. In all the cases, the products 2,5-disubstituted tetrahydrofurans (2,5-THFs) were obtained in good to excellent yields (up to 86%) with high diastereoselectivity (dr up to 99:1) as a single regioisomer. The stereochemistry at the 2- and 5-positions of the five-membered ring has been confirmed by single-crystal X-ray analysis, and cis is found to be the major product. The same strategy has been further utilized to obtain substituted oxazolidines whenever the epoxide has been reacted with isocyanate as an electrophile. In order to induce enantioselectivity, a chiral epoxide has been reacted with both the electrophiles in the presence of the same catalyst system to afford the single stereoisomer of the final products. This synthetic methodology involves a low catalyst loading and ambient reaction condition and has been generalized with various substituents present in the starting electrophiles to produce the resultant products in acceptable yields and stereoselectivity.
Collapse
Affiliation(s)
- Koushik Das
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra 440010, India
| | - Sandipan Halder
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra 440010, India
| |
Collapse
|
19
|
Huang SKH, Bueno PRP, Garcia PJB, Lee MJ, De Castro-Cruz KA, Leron RB, Tsai PW. Antioxidant, Anti-Inflammatory and Antiproliferative Effects of Osmanthus fragrans (Thunb.) Lour. Flower Extracts. PLANTS (BASEL, SWITZERLAND) 2023; 12:3168. [PMID: 37687413 PMCID: PMC10489841 DOI: 10.3390/plants12173168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023]
Abstract
Osmanthus fragrans (Thunb.) Lour. flowers (OF-F) have been traditionally consumed as a functional food and utilized as folk medicine. This study evaluated the antioxidant, anti-inflammatory and cytotoxic effects of OF-F extracts on prostate cancer cells (DU-145) and determined possible protein-ligand interactions of its compounds in silico. The crude OF-F extracts-water (W) and ethanol (E) were tested for phytochemical screening, antioxidant, anti-inflammatory, and anti-cancer. Network and molecular docking analyses of chemical markers were executed to establish their application for anticancer drug development. OF-F-E possessed higher total polyphenols (233.360 ± 3.613 g/kg) and tannin (93.350 ± 1.003 g/kg) contents than OF-F-W. In addition, OF-F-E extract demonstrated effective DPPH scavenging activity (IC50 = 0.173 ± 0.004 kg/L) and contained a high FRAP value (830.620 ± 6.843 g Trolox/kg). In cell culture experiments, OF-F-E significantly reduced NO levels and inhibited cell proliferation of RAW-264.7 and DU-145 cell lines, respectively. Network analysis revealed O. fragrans (Thunb.) Lour. metabolites could affect thirteen molecular functions and thirteen biological processes in four cellular components. These metabolites inhibited key proteins of DU-145 prostate cancer using molecular docking with rutin owning the highest binding affinity with PIKR31 and AR. Hence, this study offered a new rationale for O. fragrans (Thunb.) Lour. metabolites as a medicinal herb for anticancer drug development.
Collapse
Affiliation(s)
- Steven Kuan-Hua Huang
- Department of Medical Science Industries, College of Health Sciences, Chang Jung Christian University, Tainan 711, Taiwan; (S.K.-H.H.); (M.-J.L.)
- Division of Urology, Department of Surgery, Chi Mei Medical Center, Tainan 711, Taiwan
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Paolo Robert P. Bueno
- Department of Biochemistry and Molecular Biology, College of Medicine, University of the Philippines Manila, Metro Manila 1000, Philippines;
- School of Medicine, The Manila Times College of Subic, Zambales 2222, Philippines
- Department of Chemistry, College of Science, Adamson University, Metro Manila 1000, Philippines
| | - Patrick Jay B. Garcia
- School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Metro Manila 1002, Philippines; (P.J.B.G.); (K.A.D.C.-C.); (R.B.L.)
- School of Graduate Studies, Mapúa University, Metro Manila 1002, Philippines
| | - Mon-Juan Lee
- Department of Medical Science Industries, College of Health Sciences, Chang Jung Christian University, Tainan 711, Taiwan; (S.K.-H.H.); (M.-J.L.)
| | - Kathlia A. De Castro-Cruz
- School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Metro Manila 1002, Philippines; (P.J.B.G.); (K.A.D.C.-C.); (R.B.L.)
| | - Rhoda B. Leron
- School of Chemical, Biological, and Materials Engineering and Sciences, Mapúa University, Metro Manila 1002, Philippines; (P.J.B.G.); (K.A.D.C.-C.); (R.B.L.)
| | - Po-Wei Tsai
- Department of Medical Science Industries, College of Health Sciences, Chang Jung Christian University, Tainan 711, Taiwan; (S.K.-H.H.); (M.-J.L.)
| |
Collapse
|
20
|
Joshi DD, Deb L, Somkuwar BG, Rana VS. Potential use of barks of woody vascular plants in bone mending: A review. Saudi Pharm J 2023; 31:101714. [PMID: 37559869 PMCID: PMC10406872 DOI: 10.1016/j.jsps.2023.101714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/23/2023] [Indexed: 08/11/2023] Open
Abstract
The use of synthetic drugs to overcome bone ailments causes severe side effects, but the application of herbals is helpful in maintaining bone health and accelerating bone mending. Currently, there is no oral allopathic medicine to hasten bone healing, though folk and traditional practices have adopted herbal to fasten the recovery from bone ailments. Earliest recovery is a universally desired phenomenon, especially for elderly people where many more cases of traumatic injuries are common along the compromised body immunity. The computerized database search engines, such as Google Scholar, PubMed, ScienceDirect, Springer Link, etc., and textbooks were used to collect all relevant information about barks for bone mending activity published from 1990 onwards using certain keywords such as bark, folklore/ traditional bone healing practices, and phytopharmacology. The results obtained were compiled to make this review and related information is tabulated herewith. Traditional herbal bone healing exists in every society in the world. The plant barks of a few species (e.g., Ficus religiosa, Prunus cerasoides, Terminalia arjuna, etc.) have outstanding significance for bone healing because of their special chemical composition and novel properties to reduce swelling, pain, soreness, and speedy recovery of functions. Mostly bark extracts are rich in polyphenols, and minerals, represented with antioxidant, immunostimulatory, antibacterial properties, etc. There is a diversity of bark utilization for bone healing from different plant species, globally, of which only a few have been phytopharmacologically deciphered. Validated bark ingredients as medicine or food supplements are more useful due to the least side effects. Entrepreneurs have a scope to use bioactive obtained from plant barks that have not been scientifically screened till now. The research focused on the commercial application of plant barks as green medicine needs fingerprints of bioactive and clinically validated data including the concentration of biomarkers in the blood (IC50) for reducing the healing period. Phytopharmacological screening of barks used in folk medicine and synthesizing the therapeutics at mega quantities in industries is an array of hopes for sustainable utilization of natural resources. The bio-stimulating knowledge of certain herbal ingredients will be helpful in the development of synergistic formulations for rapid bone mending.
Collapse
Affiliation(s)
- Devi Datt Joshi
- Amity Food and Agriculture Foundation, Amity University Uttar Pradesh, Noida 201313, UP, India
- Amity Herbal Consortium, Amity University Uttar Pradesh, Noida 201313, UP, India
| | - Lokesh Deb
- Institute of Bioresources and Sustainable Development (IBSD)-Regional Centre, Sikkim, 5th Mile, Tadong, Gangtok-737102, Sikkim, India
| | - Bharat G. Somkuwar
- Institute of Bioresources and Sustainable Development, Node Mizoram, A-1, C/o P. Lalthangzauva Building, Chawnga Road, Nursery Veng, Aizawl, 796005, Mizoram, India
| | - Virendra Singh Rana
- Division of Agricultural Chemicals, Indian Agricultural Research Institute (ICAR), Pusa Campus, New Delhi 110 012. India
| |
Collapse
|
21
|
Baloghová J, Michalková R, Baranová Z, Mojžišová G, Fedáková Z, Mojžiš J. Spice-Derived Phenolic Compounds: Potential for Skin Cancer Prevention and Therapy. Molecules 2023; 28:6251. [PMID: 37687080 PMCID: PMC10489044 DOI: 10.3390/molecules28176251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/20/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Skin cancer is a condition characterized by the abnormal growth of skin cells, primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Different types of skin cancer include melanoma, basal cell carcinoma, and squamous cell carcinoma. Despite the advancements in targeted therapies, there is still a need for a safer, highly efficient approach to preventing and treating cutaneous malignancies. Spices have a rich history dating back thousands of years and are renowned for their ability to enhance the flavor, taste, and color of food. Derived from various plant parts like seeds, fruits, bark, roots, or flowers, spices are important culinary ingredients. However, their value extends beyond the culinary realm. Some spices contain bioactive compounds, including phenolic compounds, which are known for their significant biological effects. These compounds have attracted attention in scientific research due to their potential health benefits, including their possible role in disease prevention and treatment, such as cancer. This review focuses on examining the potential of spice-derived phenolic compounds as preventive or therapeutic agents for managing skin cancers. By compiling and analyzing the available knowledge, this review aims to provide insights that can guide future research in identifying new anticancer phytochemicals and uncovering additional mechanisms for combating skin cancer.
Collapse
Affiliation(s)
- Janette Baloghová
- Department of Dermatovenerology, Faculty of Medicine, Pavol Jozef Šafárik University, 040 01 Košice, Slovakia; (J.B.); (Z.B.); (Z.F.)
| | - Radka Michalková
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, 040 01 Kosice, Slovakia;
| | - Zuzana Baranová
- Department of Dermatovenerology, Faculty of Medicine, Pavol Jozef Šafárik University, 040 01 Košice, Slovakia; (J.B.); (Z.B.); (Z.F.)
| | - Gabriela Mojžišová
- Center of Clinical and Preclinical Research MEDIPARK, Faculty of Medicine, Pavol Jozef Šafárik University, 040 01 Kosice, Slovakia;
| | - Zuzana Fedáková
- Department of Dermatovenerology, Faculty of Medicine, Pavol Jozef Šafárik University, 040 01 Košice, Slovakia; (J.B.); (Z.B.); (Z.F.)
| | - Ján Mojžiš
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, 040 01 Kosice, Slovakia;
| |
Collapse
|
22
|
Olabiyi AA, de Castro Brás LE. Cardiovascular Remodeling Post-Ischemia: Herbs, Diet, and Drug Interventions. Biomedicines 2023; 11:1697. [PMID: 37371792 DOI: 10.3390/biomedicines11061697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Cardiovascular disease (CVD) is a serious health burden with increasing prevalence, and CVD continues to be the principal global source of illness and mortality. For several disorders, including CVD, the use of dietary and medicinal herbs instead of pharmaceutical drugs continues to be an alternate therapy strategy. Despite the prevalent use of synthetic pharmaceutical medications, there is currently an unprecedented push for the use of diet and herbal preparations in contemporary medical systems. This urge is fueled by a number of factors, the two most important being the common perception that they are safe and more cost-effective than modern pharmaceutical medicines. However, there is a lack of research focused on novel treatment targets that combine all these strategies-pharmaceuticals, diet, and herbs. In this review, we looked at the reported effects of pharmaceutical drugs and diet, as well as medicinal herbs, and propose a combination of these approaches to target independent pathways that could synergistically be efficacious in treating cardiovascular disease.
Collapse
Affiliation(s)
- Ayodeji A Olabiyi
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA
| | - Lisandra E de Castro Brás
- Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, NC 27858, USA
| |
Collapse
|
23
|
Lim DJ, Song JS, Lee BH, Son YK, Kim Y. Qualitative and Quantitative Analysis of the Major Bioactive Components of Juniperus chinensis L. Using LC-QTOF-MS and LC-MSMS and Investigation of Antibacterial Activity against Pathogenic Bacteria. Molecules 2023; 28:molecules28093937. [PMID: 37175347 PMCID: PMC10180426 DOI: 10.3390/molecules28093937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/03/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023] Open
Abstract
Plants in the genus Juniperus have been reported to produce a variety of chemical components, such as coumarins, flavonoids, lignans, sterols, and terpenoids. Here, ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) and ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) were applied to qualitatively and quantitatively analyze the major bioactive components in an ethanolic crude extract from the leaves of Juniperus chinensis L., which grows naturally in Korea. In addition, the antibacterial activity of the crude extract against pathogenic bacteria was investigated. Using LC-QTOF-MS analysis, we identified ten compounds, of which six were confirmed to be flavonoid and lignan-based components as the major bioactive components, i.e., isoquercetin, quercetin-3-O-α-l-rhamnoside, hinokiflavone, amentoflavone, podocarpusflavone A, and matairesinoside. Among them, a quantitative analysis performed using LC-MS/MS revealed that the levels of quercetin-3-O-α-l-rhamnoside and amentoflavone in the crude extract were 203.78 and 69.84 mg/g, respectively. Furthermore, the crude extract exhibited potential antibacterial activity against 10 pathogenic bacteria, with the highest antibacterial activity detected against Bordetella pertussis. Thus, further studies of the leaf extract of J. chinensis L. must be carried out to correlate the compounds present in the extract with the antibacterial activity and elucidate the mechanisms of action of this extract against bacteria.
Collapse
Affiliation(s)
- Da Jung Lim
- Department of Research and Development, Center for Industrialization of Agricultural and Livestock Microorganisms, Jeongeup-si 56212, Republic of Korea
| | - Jeong-Sup Song
- Department of Research and Development, Center for Industrialization of Agricultural and Livestock Microorganisms, Jeongeup-si 56212, Republic of Korea
| | - Byoung-Hee Lee
- Biological Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Youn Kyoung Son
- Biological Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Yangseon Kim
- Department of Research and Development, Center for Industrialization of Agricultural and Livestock Microorganisms, Jeongeup-si 56212, Republic of Korea
| |
Collapse
|
24
|
Fernandes AJ, Michelet B, Panossian A, Martin-Mingot A, Leroux FR, Thibaudeau S. Exploring F/CF 3 substituted oxocarbenium ions for the diastereoselective assembly of highly substituted tetrahydrofurans. Chem Commun (Camb) 2023; 59:4083-4086. [PMID: 36938713 DOI: 10.1039/d2cc06521e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
Understanding the influence of emerging fluorinated motifs is of a crucial importance in the context of the exponentially growing exploitation of fluorine in many fields. Herein, we report on the dramatic effect of a local partial charge inversion by replacing a CHCH3 group by a CFCF3. This strategy allows the diastereoselective reduction of 5-membered ring oxocarbenium ions to access highly substituted tetrahydrofurans.
Collapse
Affiliation(s)
- Anthony J Fernandes
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, Strasbourg 67087, France.
| | - Bastien Michelet
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe "Synthèse Organique", 4 Rue Michel Brunet, Poitiers Cedex 9 86073, France.
| | - Armen Panossian
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, Strasbourg 67087, France.
| | - Agnès Martin-Mingot
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe "Synthèse Organique", 4 Rue Michel Brunet, Poitiers Cedex 9 86073, France.
| | - Frédéric R Leroux
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 25 Rue Becquerel, Strasbourg 67087, France.
| | - Sébastien Thibaudeau
- Université de Poitiers, CNRS, IC2MP, UMR 7285, Equipe "Synthèse Organique", 4 Rue Michel Brunet, Poitiers Cedex 9 86073, France.
| |
Collapse
|
25
|
New Anti-Glycative Lignans from the Defatted Seeds of Sesamum indicum. Molecules 2023; 28:molecules28052255. [PMID: 36903500 PMCID: PMC10005424 DOI: 10.3390/molecules28052255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
Seven known analogs, along with two previously undescribed lignan derivatives sesamlignans A (1) and B (2), were isolated from a water-soluble extract of the defatted sesame seeds (Sesamum indicum L.) by applying the chromatographic separation method. Structures of compounds 1 and 2 were elucidated based on extensive interpretation of 1D, 2D NMR, and HRFABMS spectroscopic data. The absolute configurations were established by analyzing the optical rotation and circular dichroism (CD) spectrum. Inhibitory effects against the formation of advanced glycation end products (AGEs) and peroxynitrite (ONOO-) scavenging assays were performed to evaluate the anti-glycation effects of all isolated compounds. Among the isolated compounds, (1) and (2) showed potent inhibition towards AGEs formation, with IC50 values of 7.5 ± 0.3 and 9.8 ± 0.5 μM, respectively. Furthermore, the new aryltetralin-type lignan 1 exhibited the most potent activity when tested in the in vitro ONOO- scavenging assay.
Collapse
|
26
|
Kumar G, Kiran Tudu A. Tackling multidrug-resistant Staphylococcus aureus by natural products and their analogues acting as NorA efflux pump inhibitors. Bioorg Med Chem 2023; 80:117187. [PMID: 36731248 DOI: 10.1016/j.bmc.2023.117187] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/29/2023]
Abstract
Staphylococcus aureus (S. aureus) is a pathogen responsible for various community and hospital-acquired infections with life-threatening complications like bacteraemia, endocarditis, meningitis, liver abscess, and spinal cord epidural abscess. Antibiotics have been used to treat microbial infections since the introduction of penicillin in 1940. In recent decades, the abuse and misuse of antibiotics in humans, animals, plants, and fungi, including the treatment of non-microbial diseases, have led to the rapid emergence of multidrug-resistant pathogens with increased virulence. Bacteria have developed several complementary mechanisms to avoid the effects of antibiotics. These mechanisms include chemical transformations and enzymatic inactivation of antibiotics, modification of antibiotics' target site, and reduction of intracellular antibiotics concentration by changes in membrane permeability or by the overexpression of efflux pumps (EPs). The strategy to check antibiotic resistance includes synthesis of the antibiotic analogues, or antibiotics are given in combination with the adjuvant. The inhibitors of multidrug EPs are considered promising alternative therapeutic options with the potential to revive the effects of antibiotics and reduce bacterial virulence. Natural products played a vital role in drug discovery and significantly contributed to the area of infectious diseases. Also, natural products provide lead compounds that sometimes need modification based on structural and biological properties to meet the drug criteria. This review discusses natural products and their derived compounds as NorA efflux pump inhibitors (EPIs).
Collapse
Affiliation(s)
- Gautam Kumar
- Department of Natural Products, Chemical Sciences, National Institute of Pharmaceutical Education and Research-Hyderabad, Hyderabad, Balanagar, Telangana 500037, India.
| | - Asha Kiran Tudu
- Department of Natural Products, Chemical Sciences, National Institute of Pharmaceutical Education and Research-Hyderabad, Hyderabad, Balanagar, Telangana 500037, India
| |
Collapse
|
27
|
Ban Y, Wang Y, Qiao L, Zhang C, Wang H, He X, Jia D, Zheng C. Total lignans from Vitex negundo seeds attenuate osteoarthritis and their main component vitedoin A alleviates osteoclast differentiation by suppressing ERK/NFATc1 signaling. Phytother Res 2023; 37:1422-1434. [PMID: 36737044 DOI: 10.1002/ptr.7750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 01/10/2023] [Accepted: 01/20/2023] [Indexed: 02/05/2023]
Abstract
The seeds of Vitex negundo have been used for inflammation-related disease treatment in traditional medicine. This study focused on the anti-osteoarthritis (OA) effects of the total lignans of V. negundo seeds (TOV) in monosodium iodoacetate-induced osteoarthritis rats and its pharmacokinetic properties, as well as the effects and potential mechanism of its main components VN1 (6-hydroxy-4-(4-hydroxy-3-methoxy-phenyl)-3-hydro-xymethyl-7-methoxy-3,4-dihydro-2-naphthaldehydeb) and VN2 (vitedoin A) on receptor activator of NF-κB ligand (RANKL)-induced osteoclast differentiation in bone marrow macrophages (BMMs). TOV significantly attenuated osteoarthritis, leading to an increase in pain thresholds, improvement of knee articular cartilages and chondrocytes loss, and decreased total joint scores and serum levels of TNF-α, interleukin-1β (IL-1β), and prostaglandin E2 (PGE2) in osteoarthritis rats. The half-time (T1/2 ) was 2.82 h and 1.33 h, and the bioavailability was 15.34%-21.89% and 16.29%-22.11%, for VN1 and VN2, respectively. VN2, rather than VN1, remarkably inhibited tartrate-resistant acid phosphatase (TRAP) activity, reduced the number of TRAP-positive multinuclear cells, diminished the formation of actin ring, and decreased mRNA levels of cathepsin K (CTSK), TRAP, nuclear factor of activated T cell 1 (NFATc1), and osteoclast-associated receptor, as well as downregulated protein levels of p-ERK (phosphorylated extracellular signal-regulated kinase), TRAP, CTSK and NFATc1 in BMMs. These findings suggest TOV has promising therapeutic potential for OA treatment and VN2, in particular, attenuates osteoclast differentiation by suppressing ERK/NFATc1 signaling and actin ring, mainly accounting for the anti-OA efficacy of TOV.
Collapse
Affiliation(s)
- Yanfei Ban
- Faculty of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Yang Wang
- Zhejiang Int'lmedicine Co., Ltd., Hangzhou, China
| | | | - Chengzhong Zhang
- Faculty of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Hongrui Wang
- Faculty of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Xuhui He
- Faculty of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Dan Jia
- Faculty of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Chengjian Zheng
- Faculty of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| |
Collapse
|
28
|
Gennaiou K, Kelesidis A, Kourgiantaki M, Zografos AL. Combining the best of both worlds: radical-based divergent total synthesis. Beilstein J Org Chem 2023; 19:1-26. [PMID: 36686041 PMCID: PMC9830495 DOI: 10.3762/bjoc.19.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/30/2022] [Indexed: 01/04/2023] Open
Abstract
A mature science, combining the art of the total synthesis of complex natural structures and the practicality of delivering highly diverged lead compounds for biological screening, is the constant aim of the organic chemistry community. Delivering natural lead compounds became easier during the last two decades, with the evolution of green chemistry and the concepts of atom economy and protecting-group-free synthesis dominating the field of total synthesis. In this new era, total synthesis is moving towards natural efficacy by utilizing both the biosynthetic knowledge of divergent synthesis and the latest developments in radical chemistry. This contemporary review highlights recent total syntheses that incorporate the best of both worlds.
Collapse
Affiliation(s)
- Kyriaki Gennaiou
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
| | - Antonios Kelesidis
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
| | - Maria Kourgiantaki
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
| | - Alexandros L Zografos
- Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Organic Chemistry, Thessaloniki, 54124, Greece
| |
Collapse
|
29
|
El Gaamouch F, Chen F, Ho L, Lin HY, Yuan C, Wong J, Wang J. Benefits of dietary polyphenols in Alzheimer's disease. Front Aging Neurosci 2022; 14:1019942. [PMID: 36583187 PMCID: PMC9792677 DOI: 10.3389/fnagi.2022.1019942] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 11/21/2022] [Indexed: 12/15/2022] Open
Abstract
Alzheimer's disease (AD) is an irreversible progressive neurodegenerative disease affecting approximately 50 million people worldwide. It is estimated to reach 152 million by the year 2050. AD is the fifth leading cause of death among Americans age 65 and older. In spite of the significant burden the disease imposes upon patients, their families, our society, and our healthcare system, there is currently no cure for AD. The existing approved therapies only temporarily alleviate some of the disease's symptoms, but are unable to modulate the onset and/or progression of the disease. Our failure in developing a cure for AD is attributable, in part, to the multifactorial complexity underlying AD pathophysiology. Nonetheless, the lack of successful pharmacological approaches has led to the consideration of alternative strategies that may help delay the onset and progression of AD. There is increasing recognition that certain dietary and nutrition factors may play important roles in protecting against select key AD pathologies. Consistent with this, select nutraceuticals and phytochemical compounds have demonstrated anti-amyloidogenic, antioxidative, anti-inflammatory, and neurotrophic properties and as such, could serve as lead candidates for further novel AD therapeutic developments. Here we summarize some of the more promising dietary phytochemicals, particularly polyphenols that have been shown to positively modulate some of the important AD pathogenesis aspects, such as reducing β-amyloid plaques and neurofibrillary tangles formation, AD-induced oxidative stress, neuroinflammation, and synapse loss. We also discuss the recent development of potential contribution of gut microbiome in dietary polyphenol function.
Collapse
Affiliation(s)
- Farida El Gaamouch
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States,Geriatric Research, Education and Clinical Center, James J Peters VA Medical Center, Research & Development, Bronx, NY, United States
| | - Fiona Chen
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Lap Ho
- Department of Genetics and Genomic sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Hsiao-Yun Lin
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States,Geriatric Research, Education and Clinical Center, James J Peters VA Medical Center, Research & Development, Bronx, NY, United States
| | - Chongzhen Yuan
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States,Geriatric Research, Education and Clinical Center, James J Peters VA Medical Center, Research & Development, Bronx, NY, United States
| | - Jean Wong
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jun Wang
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States,Geriatric Research, Education and Clinical Center, James J Peters VA Medical Center, Research & Development, Bronx, NY, United States,*Correspondence: Jun Wang,
| |
Collapse
|
30
|
Munawar S, Zahoor AF, Ali S, Javed S, Irfan M, Irfan A, Kotwica-Mojzych K, Mojzych M. Mitsunobu Reaction: A Powerful Tool for the Synthesis of Natural Products: A Review. Molecules 2022; 27:6953. [PMID: 36296545 PMCID: PMC9609662 DOI: 10.3390/molecules27206953] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 08/13/2023] Open
Abstract
The Mitsunobu reaction plays a vital part in organic chemistry due to its wide synthetic applications. It is considered as a significant reaction for the interconversion of one functional group (alcohol) to another (ester) in the presence of oxidizing agents (azodicarboxylates) and reducing agents (phosphines). It is a renowned stereoselective reaction which inverts the stereochemical configuration of end products. One of the most important applications of the Mitsunobu reaction is its role in the synthesis of natural products. This review article will focus on the contribution of the Mitsunobu reaction towards the total synthesis of natural products, highlighting their biological potential during recent years.
Collapse
Affiliation(s)
- Saba Munawar
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Shafaqat Ali
- College of Agriculture and Environmental Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Sadia Javed
- Department of Biochemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Irfan
- Department of Pharmaceutics, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Ali Irfan
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Katarzyna Kotwica-Mojzych
- Laboratory of Experimental Cytology, Medical University of Lublin, Radziwiłłowska 11, 20-080 Lublin, Poland
| | - Mariusz Mojzych
- Department of Chemistry, Siedlce University of Natural Sciences and Humanities, 3-go Maja 54, 08-110 Siedlce, Poland
| |
Collapse
|
31
|
Liang J, Huang X, Ma G. Antimicrobial activities and mechanisms of extract and components of herbs in East Asia. RSC Adv 2022; 12:29197-29213. [PMID: 36320733 PMCID: PMC9554739 DOI: 10.1039/d2ra02389j] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022] Open
Abstract
Antibacterial drugs face increasing challenges due to drug resistance and adverse reactions, which has created a pressing need for the discovery and development of novel antibacterial drugs. Herbs have played an important role in the treatment of infectious diseases. This review aims to summarize, analyze and evaluate the antibacterial activities and mechanisms of components from popular herbs in East Asia. In this review, we have searched and summarized the scientific papers published during the past twenty-year period from electronic databases such as PubMed, ScienceDirect, and Web of Science. These herbs and their components, including alkaloids, flavonoids, essential oils, terpenes, organic acids, coumarins and lignans, display potential antimicrobial effects. Herbal medicine formulas (HMFs) usually show stronger antibacterial activity than single herbs. Herbs and HMFs bring forth antibacterial activities by damaging cell membranes and walls, inhibiting nucleic acid and protein synthesis, and increasing intracellular osmotic pressure. These herbs and their components can be developed as potential and promising novel antibacterial herbal products.
Collapse
Affiliation(s)
- Jingru Liang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University826 Zhangheng RoadShanghai 201203China+86-21-5198-0025
| | - Xuan Huang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University826 Zhangheng RoadShanghai 201203China+86-21-5198-0025
| | - Guo Ma
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University826 Zhangheng RoadShanghai 201203China+86-21-5198-0025
| |
Collapse
|
32
|
Wyse J, Latif S, Gurusinghe S, McCormick J, Weston LA, Stephen CP. Phytoestrogens: A Review of Their Impacts on Reproductive Physiology and Other Effects upon Grazing Livestock. Animals (Basel) 2022; 12:ani12192709. [PMID: 36230450 PMCID: PMC9559698 DOI: 10.3390/ani12192709] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/06/2022] [Accepted: 10/06/2022] [Indexed: 11/16/2022] Open
Abstract
Legume crops and pastures have a high economic value in Australia. However, legume species commonly used for grazing enterprises have been identified to produce high concentrations of phytoestrogens. These compounds are heterocyclic phenolic, and are similar in structure to the mammalian estrogen, 17β-estradiol. The biological activity of the various phytoestrogen types; isoflavones, lignans and coumestans, are species-specific, although at concentrations of 25 mg/kg of dry matter each of the phytoestrogen types affect reproductive functions in grazing livestock. The impacts upon fertility in grazing livestock such as cattle and sheep, vary greatly over length of exposure time, age and health of animal and the stress stimuli the plant is exposed to. More recently, research into the other effects that phytoestrogens may have upon metabolism, immune capacity and growth and performance of grazing livestock has been conducted. Potential new benefits for using these phytoestrogens, such as daidzein and genistein, have been identified by observing the stimulation of production in lymphocytes and other antibody cells. Numerous isoflavones have also been recognized to promote protein synthesis, increase the lean meat ratio, and increase weight gain in cattle and sheep. In Australia, the high economic value of legumes as pasture crops in sheep and cattle production enterprises requires proactive management strategies to mitigate risk associated with potential loss of fertility associated with inclusion of pasture legumes as forages for grazing livestock.
Collapse
Affiliation(s)
- Jessica Wyse
- School of Agricultural, Environmental and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
- Gulbali Institute for Agriculture, Water and the Environment, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
- Correspondence: (J.W.); (C.P.S.)
| | - Sajid Latif
- National Life Sciences Research Hub, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
| | - Saliya Gurusinghe
- Gulbali Institute for Agriculture, Water and the Environment, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
| | - Jeffrey McCormick
- School of Agricultural, Environmental and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
- Gulbali Institute for Agriculture, Water and the Environment, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
| | - Leslie A. Weston
- Gulbali Institute for Agriculture, Water and the Environment, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
| | - Cyril P. Stephen
- School of Agricultural, Environmental and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
- Gulbali Institute for Agriculture, Water and the Environment, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
- Correspondence: (J.W.); (C.P.S.)
| |
Collapse
|
33
|
Plaha NS, Awasthi S, Sharma A, Kaushik N. Distribution, biosynthesis and therapeutic potential of lignans. 3 Biotech 2022; 12:255. [PMID: 36065422 PMCID: PMC9440181 DOI: 10.1007/s13205-022-03318-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/16/2022] [Indexed: 11/01/2022] Open
Abstract
Lignans have long been known for their abundant therapeutic properties due to their polyphenolic structure. Linseed is the richest plant source of lignans and has been studied widely for their properties. The most prevalent lignan, secoisolariciresinol diglucoside (SDG), is consumed with linseed and converted into mammalian lignans, enterodiol (END) and enterolactone (ENL), by the gut microbiota. SDG can easily be assessed using HPLC and its deglycosylated form viz secoisolariciresinol can be asses using GC-MS techniques. Variety of extraction and analysis methods has been reported for plant lignans. SDG is known to have therapeutic properties including anti-oxidant, anti-cancerous, anti-inflammatory, modulation of gene expression, anti-diabetic, estrogenic and anti-estrogenic. Despite a large number of bioactivities, strong evidences for the underlying mechanisms for most of the properties are still unknown. SDG is most studied for its anti-cancerous properties. But the use of lignans as anti-carcinogenic agent is limited and commercially not reported due to challenges of purification at commercial level, rapid metabolism, untargeted delivery and toxic compounds associated with lignans. Exploration of more prominent and active derivatives of SDG and their targeted drug delivery should be an important research toward the use of bioactive lignans of linseed.
Collapse
Affiliation(s)
- Navdeep Singh Plaha
- Amity Food and Agriculture Foundation, Amity University Uttar Pradesh, Noida, UP India
| | - Sumegha Awasthi
- Amity Food and Agriculture Foundation, Amity University Uttar Pradesh, Noida, UP India
| | - Ayushi Sharma
- Amity Food and Agriculture Foundation, Amity University Uttar Pradesh, Noida, UP India
| | - Nutan Kaushik
- Amity Food and Agriculture Foundation, Amity University Uttar Pradesh, Noida, UP India
| |
Collapse
|
34
|
Heckmann M, Sadova N, Drotarova I, Atzmüller S, Schwarzinger B, Guedes RMC, Correia PA, Hirtenlehner S, Potthast C, Klanert G, Weghuber J. Extracts Prepared from Feed Supplements Containing Wood Lignans Improve Intestinal Health by Strengthening Barrier Integrity and Reducing Inflammation. Molecules 2022; 27:molecules27196327. [PMID: 36234864 PMCID: PMC9572150 DOI: 10.3390/molecules27196327] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Lignans are known to exhibit a broad spectrum of biological activities, indicating their potential as constituents of feed supplements. This study investigated two extracts derived from the feed supplements ‘ROI’ and ‘Protect’—which contain the wood lignans magnolol and honokiol (‘ROI’), or soluble tannins additional to the aforementioned lignans (‘Protect’)—and their impact on selected parameters of intestinal functionality. The antioxidant and anti-inflammatory properties of the extracts were determined by measuring their effects on reactive oxygen species (ROS) and pro-inflammatory cytokine production in vitro. The impact on intestinal barrier integrity was evaluated in Caco-2 cells and Drosophila melanogaster by examining leaky gut formation. Furthermore, a feeding trial using infected piglets was conducted to study the impact on the levels of superoxide dismutase, glutathione and lipid peroxidation. The Protect extract lowered ROS production in Caco-2 cells and reversed the stress-induced weakening of barrier integrity. The ROI extract inhibited the expression or secretion of interleukin-8 (IL-8), interleukin-6 (IL-6), interleukin-1β (IL-1β) and tumor necrosis factor α (TNFα). Moreover, the ROI extract decreased leaky gut formation and mortality rates in Drosophila melanogaster. Dietary supplementation with Protect improved the antioxidant status and barrier integrity of the intestines of infected piglets. In conclusion, wood lignan-enriched feed supplements are valuable tools that support intestinal health by exerting antioxidant, anti-inflammatory and barrier-strengthening effects.
Collapse
Affiliation(s)
- Mara Heckmann
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Nadiia Sadova
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
| | - Ivana Drotarova
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Stefanie Atzmüller
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Bettina Schwarzinger
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Roberto Mauricio Carvalho Guedes
- Department of Veterinary Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte 130161-970, Brazil
| | - Paula Angelica Correia
- Department of Veterinary Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte 130161-970, Brazil
| | | | | | - Gerald Klanert
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Julian Weghuber
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
- Correspondence:
| |
Collapse
|
35
|
Toll-Like Receptor 4: A Promising Therapeutic Target for Alzheimer's Disease. Mediators Inflamm 2022; 2022:7924199. [PMID: 36046763 PMCID: PMC9420645 DOI: 10.1155/2022/7924199] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 11/18/2022] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease that primarily manifests as memory deficits and cognitive impairment and has created health challenges for patients and society. In AD, amyloid β-protein (Aβ) induces Toll-like receptor 4 (TLR4) activation in microglia. Activation of TLR4 induces downstream signaling pathways and promotes the generation of proinflammatory cytokines, such as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β), which also trigger the activation of astrocytes and influence amyloid-dependent neuronal death. Therefore, TLR4 may be an important molecular target for treating AD by regulating neuroinflammation. Moreover, TLR4 regulates apoptosis, autophagy, and gut microbiota and is closely related to AD. This article reviews the role of TLR4 in the pathogenesis of AD and a range of potential therapies targeting TLR4 for AD. Elucidating the regulatory mechanism of TLR4 in AD may provide valuable clues for developing new therapeutic strategies for AD.
Collapse
|
36
|
Arora S, Goyal A, Rawat DS, Samantha K. Giloy: a potential anti-COVID-19 herb with propitious pharmacological attributes: a short review. J Biomol Struct Dyn 2022:1-8. [PMID: 35950530 DOI: 10.1080/07391102.2022.2110157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Plant-based medicine actually restores the balance in the body instead of treating the source of the disease. The strain of coronavirus (SAR-CoV-2) going to be more serious due to the lack of a reliable treatment option. Holistic treatment for this disease is in the form of Ayurveda as traditional medicine. As the infection of coronavirus is spreading like a wildfire, so the one way to fight is 'immunity'. Building immunity is the only way to stay safe and healthy and prepared themselves for the ongoing pandemic. In the current scenario, good immunity safeguard us from disease progression and prevention from this deadly virus. Giloy herb came into the limelight after the start of the COVID-19 pandemic due to its immunomodulatory and antiviral activity. The genome sequencing of Giloy is proved to be a breakthrough for controlling the COVID-19.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Shefali Arora
- Department of Chemistry, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Anjali Goyal
- Department of Chemistry, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Devendra Singh Rawat
- Department of Chemistry, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Krishna Samantha
- Department of Chemistry, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| |
Collapse
|
37
|
Winemaking by-products as a source of phenolic compounds: Comparative study of dehydration processes. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
38
|
Taming the radical cation intermediate enabled one-step access to structurally diverse lignans. Nat Commun 2022; 13:3481. [PMID: 35710543 PMCID: PMC9203495 DOI: 10.1038/s41467-022-31000-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/20/2022] [Indexed: 11/28/2022] Open
Abstract
Lignans, in spite of their structural diversity, are all biosynthetically derived from coniferyl alcohol. We report herein a divergent synthesis of lignans from biomass-derived monolignols in a short synthetic sequence. Blue LED irradiation of a dichloromethane solution of dicinnamyl ether derivatives in the presence of Cu(TFA)2, an alcohol (2.0 equiv) and a catalytic amount of Fukuzumi’s salt affords the C7-alkoxylated aryltetralin cyclic ethers. Increasing the amount of alcohol under otherwise identical conditions diverts the reaction course to furnish the C7,C7’-dialkoxylated dibenzyltetrahydrofurans, while replacing Cu(TFA)2 with diphenyl disulfide (PhSSPh) provides selectively the C7-monoalkoxylated dibenzyltetrahydrofurans. Aza-, thia- and carba-analogues of lignans are equally accessible by simply changing the tethering atom of the allylic alcohols. Concise total syntheses of aglacins A, E, F, brassilignan, and dehydrodimethylconidendrin are documented featuring these transformations. Lignans, in spite of their structural diversity, are all biosynthetically derived from coniferyl alcohol. Here, the authors describe a divergent and stereoselective chemical synthesis of three types of lignans from biomass-derived monolignols, exploiting the different reaction manifolds of highly reactive radical cation intermediate.
Collapse
|
39
|
Mukhija M, Joshi BC, Bairy PS, Bhargava A, Sah AN. Lignans: a versatile source of anticancer drugs. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2022; 11:76. [PMID: 35694188 PMCID: PMC9166195 DOI: 10.1186/s43088-022-00256-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/17/2022] [Indexed: 12/18/2022] Open
Abstract
Background Cancer is considered as the second deadliest disease globally. Plants have continuously offered unique secondary metabolites with remarkable biological applications. Lignans have gained great importance due to their biological activity. Previous studies revealed that the most remarkable bioactivity of lignan class of molecules is anticancer. They are derived from the oxidative dimerization of two phenylpropanoid units. This review covers the isolated anticancer lignans and their mechanistic aspects. Main body A bibliographic investigation was performed by analyzing the information available on anticancer lignans in the internationally accepted scientific databases including Web of Science, SciFinder, PubMed, Scopus, and Google Scholar. In this review we have tried to sum up the isolated anticancerous lignan, its source, active plant part, extract and various cell lines used to establish different studies. Here we have included a total number of 113 natural lignans. Many studies that mainly performed in human cell lines have reported. Very few plants have been evaluated for their in vivo anticancer activity. Conclusion It can be concluded that in near future the lignans may be an effective pharmacon for the treatment of cancer. Fruitful areas of future research may be in modifying natural lignans or synthesizing new lignans with structural diversity and potent pharmacological activities. Extensive studies are needed to be done highlighting the mechanism of anticancer action of explored and unexplored plants. The data will definitely attract many researchers to start further experimentation that might lead to the drugs for the cancer treatment. Graphical Abstract ![]()
Collapse
|
40
|
Hammadi R, Kúsz N, Dávid CZ, Mwangi PW, Berkecz R, Szemerédi N, Spengler G, Hohmann J, Vasas A. Polyoxypregnane Ester Derivatives and Lignans from Euphorbia gossypina var. coccinea Pax. PLANTS (BASEL, SWITZERLAND) 2022; 11:1299. [PMID: 35631724 PMCID: PMC9146146 DOI: 10.3390/plants11101299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/05/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
From the aerial parts of Euphorbiagossypina var. coccinea Pax., eight new pregnane glycosides (euphogossypins A-H, 1-8) of the cynanforidine and deacetylmetaplexigenin aglycons, two new lignans (gossypilignans A and B, 9 and 10), and four known compounds, namely, the pregnane 12-O-benzoyldeaxcylmetaplexigenin (11), the lignan 9α-hydroxypinoresinol (12), and the flavonoids naringenin (13) and quercitrin (14) were isolated. The structure elucidation of the new compounds was carried out by a spectroscopic analysis, including HRMS, 1D (1H, 13C JMOD), and 2D NMR (HSQC, 1H-1H COSY, HMBC, and NOESY) experiments. The obtained pregnane glycosides were substituted with acetyl and benzoyl ester moieties, and sugar chains containing thevetose, cymarose, digitoxose, and glucose monosaccharides. All of the compounds are described for the first time from E. gossypina var. coccinea. The isolated pregnanes and lignans were tested for their antiproliferative activity on HeLa cells using the MTT assay; the compounds exerted no significant effect against the tumor cells.
Collapse
Affiliation(s)
- Reham Hammadi
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary; (R.H.); (N.K.); (C.Z.D.); (J.H.)
| | - Norbert Kúsz
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary; (R.H.); (N.K.); (C.Z.D.); (J.H.)
| | - Csilla Zsuzsanna Dávid
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary; (R.H.); (N.K.); (C.Z.D.); (J.H.)
| | - Peter Waweru Mwangi
- School of Biological Sciences, University of Nairobi, P.O. Box 30197, Nairobi 00100, Kenya;
| | - Róbert Berkecz
- Institute of Pharmaceutical Analysis, University of Szeged, 6720 Szeged, Hungary;
| | - Nikoletta Szemerédi
- Department of Medical Microbiology, Albert Szent-Györgyi Health Center, Albert Szent-Györgyi Medical School, University of Szeged, 6725 Szeged, Hungary; (N.S.); (G.S.)
| | - Gabriella Spengler
- Department of Medical Microbiology, Albert Szent-Györgyi Health Center, Albert Szent-Györgyi Medical School, University of Szeged, 6725 Szeged, Hungary; (N.S.); (G.S.)
| | - Judit Hohmann
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary; (R.H.); (N.K.); (C.Z.D.); (J.H.)
- Interdisciplinary Centre of Natural Products, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
| | - Andrea Vasas
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary; (R.H.); (N.K.); (C.Z.D.); (J.H.)
| |
Collapse
|
41
|
Tardugno R, Cicero N, Costa R, Nava V, Vadalà R. Exploring Lignans, a Class of Health Promoting Compounds, in a Variety of Edible Oils from Brazil. Foods 2022; 11:1386. [PMID: 35626956 PMCID: PMC9141677 DOI: 10.3390/foods11101386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 11/16/2022] Open
Abstract
Lignans, a group of polyphenols, have been identified in eight cold pressed oils from fruits, nuts, and seeds, retrieved from the Brazilian market. The oils under investigation were avocado, Brazilian nut, canola, coconut, grapeseed, macadamia, palm, and pequi. Olive oil was selected as a reference oil, since numerous data on its lignan content are available in literature. The qualitative and quantitative profiles were obtained, after extraction, by means of UFLC-ESI-MS/MS analyses. The total lignan content showed a high variability, ranging from 0.69 mg·Kg-1 (pequi) to 7.12 mg·Kg-1 (grapeseed), with the highest content registered for olive oil. Seven lignans were quantified, matairesinol and pinoresinol being the most abundant. The LC-MS/MS method was validated, showing linearity in the range of 12.5-212.5 mg·Kg-1, LOD in the range of 0.18-11.37 mg·Kg-1, and LOQ in the range of 0.53-34.45 mg·Kg-1. Additionally, part of the study was focused on the evaluation of the flavor profile, this being a key element in consumers' evaluations, by means of HS-SPME-GC. In total, 150 volatile compounds were determined in the eight oils, with identified fractions ranging from 91.85% (avocado) to 96.31% (canola), with an average value of 94.1%. Groups of components contributed characteristically to the flavour of each oil.
Collapse
Affiliation(s)
- Roberta Tardugno
- Science4Life s.r.l., Spin Off Company, University of Messina, 98122 Messina, Italy; (R.T.); (N.C.)
| | - Nicola Cicero
- Science4Life s.r.l., Spin Off Company, University of Messina, 98122 Messina, Italy; (R.T.); (N.C.)
- Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (Biomorf), University of Messina, 98122 Messina, Italy; (V.N.); (R.V.)
- Consorzio di Ricerca sul Rischio Biologico in Agricoltura (Co.Ri.Bi.A.), 90100 Palermo, Italy
| | - Rosaria Costa
- Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (Biomorf), University of Messina, 98122 Messina, Italy; (V.N.); (R.V.)
| | - Vincenzo Nava
- Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (Biomorf), University of Messina, 98122 Messina, Italy; (V.N.); (R.V.)
| | - Rossella Vadalà
- Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (Biomorf), University of Messina, 98122 Messina, Italy; (V.N.); (R.V.)
| |
Collapse
|
42
|
Tse TJ, Guo Y, Shim YY, Purdy SK, Kim JH, Cho JY, Alcorn J, Reaney MJT. Availability of bioactive flax lignan from foods and supplements. Crit Rev Food Sci Nutr 2022; 63:9843-9858. [PMID: 35532015 DOI: 10.1080/10408398.2022.2072807] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hyperlipidemia, high levels of blood lipids including cholesterol and triglycerides, is a major risk factor for cardiovascular disease. Traditional treatments of hyperlipidemia often include lifestyle changes and pharmacotherapy. Recently, flaxseed has been approved as a nutrient that lowers blood lipids. Several metabolites of flaxseed lignan secoisolariciresinol diglucoside (SDG), have been identified that reduce blood lipids. SDG is present in flaxseed hull as an ester-linked copolymer with 3-hydroxy-3-methylglutaric acid (HMGA). However, purification processes involved in hydrolysis of the copolymer and enriching SDG are often expensive. The natural copolymer of SDG with HMGA (SDG polymer) is a source of bioactive compounds useful in prophylaxis of hypercholesterolemia. After consumption of the lignan copolymer, SDG and HMGA are released in the stomach and small intestines. SDG is metabolized to secoisolariciresinol, enterolactone and enterodiol, the bioactive forms of mammalian lignans. These metabolites are then distributed throughout the body where they accumulate in the liver, kidney, skin, other tissues, and organs. Successively, these metabolites reduce blood lipids including cholesterol, triglycerides, low density lipoprotein cholesterol, and lipid peroxidation products. In this review, the metabolism and efficacies of flaxseed-derived enriched SDG and SDG polymer will be discussed.
Collapse
Affiliation(s)
- Timothy J Tse
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Yajia Guo
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Youn Young Shim
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Prairie Tide Diversified Inc., Saskatoon, Saskatchewan, Canada
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Sarah K Purdy
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ji Hye Kim
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Jane Alcorn
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Martin J T Reaney
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Prairie Tide Diversified Inc., Saskatoon, Saskatchewan, Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University, Guangdong, China
| |
Collapse
|
43
|
Optimized Ultrasound-Assisted Extraction of Lignans from Linum Species with Green Solvents. Molecules 2022; 27:molecules27092732. [PMID: 35566080 PMCID: PMC9104071 DOI: 10.3390/molecules27092732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/18/2022] [Accepted: 04/21/2022] [Indexed: 11/17/2022] Open
Abstract
Lignans are plant phenols derived from phenylpropanoids. They play a significant role in plant defense and have features that make them appealing for pharmaceutical applications. Lignans can be obtained by plant in vitro cultures; their production by adventitious and hairy roots of Linum species seems to be a promising alternative to chemical synthesis. In the context of large-scale production, it is necessary to optimize their extraction from plants tissue by choosing the more suitable solvent and extraction procedure, paying attention to the use of green media and methods. With the aim to select the best conditions for the extraction of two interesting lignans (justicidin B and 6-methoxypodophyllotoxin) from Linum tissues, different green solvents and the method of ultrasound-assisted extraction were tested. The results showed that ethyl methyl ketone and dimethyl carbonate were the best media to extract justicidin B and 6-methoxypodophyllotoxin, respectively, in terms of purity and recovery. Moreover, we showed that ultrasound-assisted extraction presents different advantages compared to conventional methods. Finally, the optimal experimental conditions to extract justicidin B from L. austriacum hairy roots using methyl ethyl ketone were also determined by the response surface method. The models obtained are reliable and accurate to estimate the purity and recovery of justicidin B.
Collapse
|
44
|
Han J, Choi H, Choi J, Lee K. Total Synthesis of Gymnothelignan K via a One-Pot Homologative γ-Butyrolactonization. Org Lett 2022; 24:2926-2930. [PMID: 35412318 DOI: 10.1021/acs.orglett.2c00939] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first total synthesis of tetrahydrofuran dilignan gymnothelignan K is disclosed. The approach is based on implementing an early stage one-carbon homologative lactonization, which we recently disclosed, for constructing the γ-butyrolactone scaffold with the requisite β,γ-trans-vicinal stereocenters. Other salient features of the synthesis include the acid-promoted dimerization and the Suzuki-Miyaura cross-coupling reaction to install the challenging diaryl skeleton that permits the effective assembly of the optically active gymnothelignan K in 8 steps from commercially available materials.
Collapse
Affiliation(s)
- Jongyeol Han
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| | - Hosam Choi
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| | - Joohee Choi
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| | - Kiyoun Lee
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| |
Collapse
|
45
|
Ke M, Qiao B, Yu Y, Li X, Xiao X, Li SJ, Lan Y, Chen F. Palladium-Catalyzed Asymmetric [3 + 2] Annulation of Vinylethylene Carbonates with Alkenes Installed on Cyclic N-Sulfonyl Imines: Highly Enantio- and Diastereoselective Construction of Chiral Tetrahydrofuran Scaffolds Bearing Three Vicinal and Quaternary Stereocenters. J Org Chem 2022; 87:5166-5177. [PMID: 35377155 DOI: 10.1021/acs.joc.1c03157] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A multisubstituted tetrahydrofuran building block bearing three vicinal chiral carbon centers widely exists in a broad spectrum of bioactive natural products, and the development of efficient and convenient methods to establish this skeleton remains a challenging task. Herein, we have developed an efficient method for the construction of significant tetrahydrofuran scaffolds bearing three vicinal and α-quaternary chiral carbon stereocenters through Pd-catalyzed asymmetric [3 + 2] annulation of vinylethylene carbonates with alkenes installed on cyclic N-sulfonyl imines. A series of multisubstituted tetrahydrofuran derivatives are obtained in high efficiencies with excellent enantioselectivities and diastereoselectivities. Density functional theory (DFT) studies are accomplished to rationalize the stereocontrol of the annulation process and disclose that methanol could be applied to stabilize the reactive zwitterionic π-allylpalladium via the H-bond interaction.
Collapse
Affiliation(s)
- Miaolin Ke
- Institute of Pharmaceutical Science and Technology, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Bolin Qiao
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yuyan Yu
- Institute of Pharmaceutical Science and Technology, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xinzhi Li
- Institute of Pharmaceutical Science and Technology, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiao Xiao
- Institute of Pharmaceutical Science and Technology, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Shi-Jun Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yu Lan
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Fener Chen
- Institute of Pharmaceutical Science and Technology, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, P. R. China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, P. R. China
| |
Collapse
|
46
|
Rao CJ, Sudheer M, Battula VR. Triflic‐Acid‐Catalyzed Tandem Epoxide Rearrangement and Annulation with Alkynes: An Efficient Approach for Regioselective Synthesis of Naphthalenes. ChemistrySelect 2022. [DOI: 10.1002/slct.202200427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Mokhamatam Sudheer
- Department of Engineering Chemistry AUCE (A) Andhra University Visakhapatnam INDIA – 530003
| | | |
Collapse
|
47
|
Choi H, Choi J, Han J, Lee K. Divergent Total Syntheses of Gymnothelignan N, Beilschmin A, and Eupomatilones 1, 3, 4, and 7. J Org Chem 2022; 87:4316-4322. [DOI: 10.1021/acs.joc.1c03167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hosam Choi
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| | - Joohee Choi
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| | - Jongyeol Han
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| | - Kiyoun Lee
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Korea
| |
Collapse
|
48
|
Sen B, Roy S, Garai S, Roy S, Anoop A, Hajra S. Stereochemistry of the Benzylidene γ-Butyrolactone Dictates the Reductive Heck Cyclization Mode in the Asymmetric Synthesis of Aryltetralin Lignans: A Detailed Experimental and Theoretical Study. J Org Chem 2022; 87:3910-3921. [PMID: 35130698 DOI: 10.1021/acs.joc.1c02174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reductive Heck cyclization of nonracemic benzylidene γ-butyrolactone is studied toward the asymmetric synthesis of aryltetralin lignans, where the stereochemistry of the benzylidene lactone is found to control the mode of cyclization. The Z-isomer undergoes mostly 6-endo-cyclization and provides the desired (-)-isopodophyllotoxin along with a minor amount of 5-exo-cyclized product, but the E-isomer goes through exclusively 5-exo-cyclization, leading to the undesired dihydroindenolactone compound instead of (-)-podophyllotoxin. The experimental results are well-supported by the DFT studies.
Collapse
Affiliation(s)
- Biswajit Sen
- Center of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India
| | - Saikat Roy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sujay Garai
- Center of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.,Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sayan Roy
- Center of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India
| | - Anakuthil Anoop
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Saumen Hajra
- Center of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India
| |
Collapse
|
49
|
Khademi Z, Heravi MM. Applications of Claisen condensations in total synthesis of natural products. An old reaction, a new perspective. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
50
|
Ota R, Karasawa D, Oshima M, Watashi K, Shimasaki N, Nishii Y. Asymmetric total synthesis of four bioactive lignans using donor–acceptor cyclopropanes and bioassay of (−)- and (+)-niranthin against hepatitis B and influenza viruses. RSC Adv 2022; 12:4635-4639. [PMID: 35425482 PMCID: PMC8981369 DOI: 10.1039/d2ra00499b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 01/31/2022] [Indexed: 02/03/2023] Open
Abstract
The total synthesis of four lignans including (−)- and (+)-niranthin has been achieved utilizing cyclopropanes. Based on bioassays of the (+)- and (−)-niranthins using HBV and IFV, we speculated the bioactive site of niranthin against HBV and IFV.
Collapse
Affiliation(s)
- Ryotaro Ota
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Uea, Nagano 386-8567, Japan
| | - Daichi Karasawa
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Uea, Nagano 386-8567, Japan
| | - Mizuki Oshima
- Department of Virology II, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8640, Japan
- Department of Applied Biological Sciences, Tokyo University of Science, Yamazaki 2641, Noda-shi, Chiba 278-8510, Japan
| | - Koichi Watashi
- Department of Virology II, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8640, Japan
- Department of Applied Biological Sciences, Tokyo University of Science, Yamazaki 2641, Noda-shi, Chiba 278-8510, Japan
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Noriko Shimasaki
- Department of Virology III, National Institution of Infections Deseases, Gakuen 4-7-1, Musashimurayama-shi, Tokyo 208-0011, Japan
| | - Yoshinori Nishii
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Uea, Nagano 386-8567, Japan
| |
Collapse
|