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Zhang CX, Zhang GH, Wei F, Kong GH, He Y, Li YK, Cai XH. Ionones from cigar tobacco leaves. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2024; 26:1033-1040. [PMID: 38835269 DOI: 10.1080/10286020.2024.2342509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 06/06/2024]
Abstract
Phytochemical studies on cigar tobacco leaves led to the isolation of 18 ionone-type compounds, including previously undescribed cigatobanes E (1) and F (2). Additionally, compounds vomifoliol acetate (3), dehydrovomifoliol (4), 8,9-dihydromegastigmane-4,6-diene-3-one (5), 7α,8α-epoxyblumenol B (6), 3-oxoactinidol (12), and loliolide acetate (15), 4β-hydroxy-dihydroactinidiolide (17), were found in tobacco leaves for the first time. The structural elucidation of all compounds was accomplished through rigorous spectral analysis.
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Affiliation(s)
- Chen-Xi Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China
| | - Guang-Hai Zhang
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650021, China
| | - Feng Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Guang-Hui Kong
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650021, China
| | - Yue He
- Yunnan Tobacco Company of China National Tobacco Corporation, Kunming 650011, China
| | - Yin-Ke Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China
| | - Xiang-Hai Cai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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2
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Budhathoki R, Timilsina AP, Regmi BP, Sharma KR, Aryal N, Parajuli N. Metabolome Mining of Curcuma longa L. Using HPLC-MS/MS and Molecular Networking. Metabolites 2023; 13:898. [PMID: 37623841 PMCID: PMC10456799 DOI: 10.3390/metabo13080898] [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: 06/27/2023] [Revised: 07/16/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023] Open
Abstract
Turmeric, Curcuma longa L., is a type of medicinal plant characterized by its perennial nature and rhizomatous growth. It is a member of the Zingiberaceae family and is distributed across the world's tropical and subtropical climates, especially in South Asia. Its rhizomes have been highly valued for food supplements, spices, flavoring agents, and yellow dye in South Asia since ancient times. It exhibits a diverse array of therapeutic qualities that encompass its ability to combat diabetes, reduce inflammation, act as an antioxidant, exhibit anticancer properties, and promote anti-aging effects. In this study, organic extracts of C. longa rhizomes were subjected to HPLC separation followed by ESI-MS and low-energy tandem mass spectrometry analyses. The Global Natural Product Social Molecular Networking (GNPS) approach was utilized for the first time in this ethnobotanically important species to conduct an in-depth analysis of its metabolomes based on their fragments. To sum it up, a total of 30 metabolites including 16 diarylheptanoids, 1 diarylpentanoid, 3 bisabolocurcumin ethers, 4 sesquiterpenoids, 4 cinnamic acid derivatives, and 2 fatty acid derivatives were identified. Among the 16 diarylheptanoids identified in this study, 5 of them are reported for the first time in this species.
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Affiliation(s)
- Rabin Budhathoki
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Nepal; (R.B.); (A.P.T.); (K.R.S.)
| | - Arjun Prasad Timilsina
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Nepal; (R.B.); (A.P.T.); (K.R.S.)
| | - Bishnu P. Regmi
- Department of Chemistry, Florida Agricultural and Mechanical University, Tallahassee, FL 32307, USA;
| | - Khaga Raj Sharma
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Nepal; (R.B.); (A.P.T.); (K.R.S.)
| | - Niraj Aryal
- Department of Biology, University of Florida, Gainesville, FL 32611, USA
| | - Niranjan Parajuli
- Biological Chemistry Lab, Central Department of Chemistry, Tribhuvan University, Kirtipur 44618, Nepal; (R.B.); (A.P.T.); (K.R.S.)
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3
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Ke TY, Wang SW, Chen SR, Huang DM, Lin YS, Hwang TL, Sun WC, Cheng YB. Alkaloids and Polyacetylenes from Hippobroma longiflora with Antiangiogenesis Properties. JOURNAL OF NATURAL PRODUCTS 2023; 86:719-729. [PMID: 37023532 DOI: 10.1021/acs.jnatprod.2c00853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Four new alkaloids, hippobrines A-D (1-4), along with three new polyacetylenes, hippobrenes A-C (5-7), were isolated from Hippobroma longiflora. Compounds 1-3 possess an unprecedented carbon skeleton. All of the new structures were determined by analyzing their mass and NMR spectroscopic data. The absolute configurations of 1 and 2 were confirmed by single-crystal X-ray analyses, and the absolute configurations of 3 and 7 were deduced using their ECD spectra. Plausible biogenetic pathways of 1 and 4 were proposed. In regard to bioactivities, all compounds (1-7) exhibited weak antiangiogenic activity against human endothelial progenitor cells, with IC50 values ranging from 21.1 ± 1.1 to 44.0 ± 2.3 μg/mL.
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Affiliation(s)
- Tzu-Yi Ke
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Shih-Wei Wang
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 25245, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City 25245, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Shu-Rong Chen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Yun-Sheng Lin
- Department of Biological Science and Technology, Meiho University, Pingtung 91202, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Wen-Chun Sun
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 25245, Taiwan
- Division of Colon and Rectal Surgery, Department of Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan
| | - Yuan-Bin Cheng
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
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4
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Lamichhane S, Rai RP, Khatri A, Adhikari R, Shrestha BG, Shrestha SK. Screening of phytochemicals as potential anti-breast cancer agents targeting HER2: an in-silico approach. J Biomol Struct Dyn 2023; 41:897-911. [PMID: 34957911 DOI: 10.1080/07391102.2021.2014972] [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: 01/11/2023]
Abstract
Breast cancer is the most common cancer among women around the world. Human Epidermal growth factor Receptor-2 (HER2) is a membrane tyrosine kinase overexpressed in 30% of human breast cancers; thus, it serves as an important drug target. Currently available HER2 inhibitor lapatinib targets the ATP binding site of the cytoplasmic kinase domain, blocking autophosphorylation and activation of HER-2. However, it causes side effects like diarrhea, nausea, rash and possible liver toxicity. As phytochemicals have fewer side effects and are relatively affordable, they offer an effective alternative. Hence, we aimed to identify potential phytochemicals that could act as HER2 inhibitors employing computational methods such as molecular docking, molecular dynamic simulation, and ADMET prediction. Out of 1500 phytochemicals docked to the ATP binding site of the HER2 kinase domain, luxenchalcone, rhinacanthin Q, subtrifloralacton D, and 7,7″-dimethyllanaraflavone exhibited higher binding affinity than the reference inhibitor and satisfied the Lipinski's rule of five. Analysis of molecular dynamics simulation trajectory showed that Rhinacanthin Q, subtrifloralacton D, and 7,7″-dimethyllanaraflavone formed a stable and compact complex without vast conformational fluctuations. MM/PBSA binding free energy analysis revealed that Rhinacanthin Q, subtrifloralacton D, and 7,7″-dimethyllanaraflavone have high binding affinity to HER2. Therefore, Rhinacanthin Q, subtrifloralacton D, and 7,7″-dimethyllanaraflavone could be potential bioactive molecules to act as inhibitor of HER2 protein. Eventually, experimental studies are needed to evaluate the potentials of these phytochemicals further. The development of drug for HER2 positive breast cancer could be accelerated with the findings of our research. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Raj Prateek Rai
- Department of Biotechnology, Kathmandu University, Dhulikhel, Nepal
| | - Amar Khatri
- Department of Biotechnology, Kathmandu University, Dhulikhel, Nepal
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5
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Taylor BE, Lee CA, Zapadka TE, Zhou AY, Barber KG, Taylor ZRR, Howell SJ, Taylor PR. IL-17A Enhances Retinal Neovascularization. Int J Mol Sci 2023; 24:ijms24021747. [PMID: 36675261 PMCID: PMC9866094 DOI: 10.3390/ijms24021747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 01/17/2023] Open
Abstract
Retinal neovascularization occurs in proliferative diabetic retinopathy, neovascular glaucoma, and age-related macular degeneration. This type of retinal pathology normally occurs in the later stages of these ocular diseases and is a prevalent cause of vision loss. Previously, we determined that Interleukin (IL)-17A plays a pivotal role in the onset and progression of non-proliferative diabetic retinopathy in diabetic mice. Unfortunately, none of our diabetic murine models progress to proliferative diabetic retinopathy. Hence, the role of IL-17A in vascular angiogenesis, neovascularization, and the onset of proliferative diabetic retinopathy was unclear. In the current study, we determined that diabetes-mediated IL-17A enhances vascular endothelial growth factor (VEGF) production in the retina, Muller glia, and retinal endothelial cells. Further, we determined that IL-17A can initiate retinal endothelial cell proliferation and can enhance VEGF-dependent vascular angiogenesis. Finally, by utilizing the oxygen induced retinopathy model, we determined that IL-17A enhances retinal neovascularization. Collectively, the results of this study provide evidence that IL-17A plays a pivotal role in vascular proliferation in the retina. Hence, IL-17A could be a potentially novel therapeutic target for retinal neovascularization, which can cause blindness in multiple ocular diseases.
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Affiliation(s)
- Brooklyn E. Taylor
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Chieh A. Lee
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Thomas E. Zapadka
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
| | - Amy Y. Zhou
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | | | - Zakary R. R. Taylor
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Scott J. Howell
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
| | - Patricia R. Taylor
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
- Correspondence:
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Tai SH, Kuo PC, Lam SH, Huang SC, Kuo YZ, Hung HY, Liou MJ, Shieh PC, Lee EJ, Wu TS. Chemical constituents from the stems of Machilus philippinensis Merr. and the neuroprotective activity of cinnamophilin. RSC Adv 2019; 9:21616-21625. [PMID: 35518857 PMCID: PMC9066449 DOI: 10.1039/c9ra03514a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 06/05/2019] [Indexed: 01/02/2023] Open
Abstract
The Machilus genus (Lauraceae) had been extensively utilized in folk medicine due to its broad range of bioactivities. In the present study, a series of chromatographic separations of the methanol extract of stems of M. philippinensis led to the identification of thirty eight compounds totally. Among these, biscinnamophilin (1), machilupins A–C (2–4), machilutone A (5), and machilusoxide A (6) were new compounds reported for the first time. In addition, 5 was characterized with a unprecedented carbon skeleton. Other known compounds, including the major compounds cinnamophilin (7) and meso-dihydroguaiaretic acid (8), are identified by comparison of their physical and spectroscopic data with reported values. One of the reported compounds, cinnamophilin A (10), should be revised as dehydroguaiaretic acid (9) after careful comparison of all the 1H and 13C NMR data. Moreover, the neuroprotective activity of cinnamophilin (7) was examined in a primary cortical neuron culture and the results indicated that 7 was effective against glutamate induced excitotoxicity. The Machilus genus (Lauraceae) had been extensively utilized in folk medicine due to its broad range of bioactivities.![]()
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Affiliation(s)
- Shih-Huang Tai
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University Tainan 701 Taiwan
| | - Ping-Chung Kuo
- School of Pharmacy, College of Medicine, National Cheng Kung University Tainan 701 Taiwan
| | - Sio Hong Lam
- School of Pharmacy, College of Medicine, National Cheng Kung University Tainan 701 Taiwan
| | - Shiow-Chyn Huang
- Department of Pharmacy, Chia-Nan University of Pharmacy and Science Tainan 717 Taiwan
| | - Yi-Zhuan Kuo
- Department of Chemistry, National Cheng Kung University Tainan 701 Taiwan
| | - Hsin-Yi Hung
- School of Pharmacy, College of Medicine, National Cheng Kung University Tainan 701 Taiwan
| | - Meei-Jen Liou
- Department of Applied Chemistry, Providence University Taichung 433 Taiwan
| | - Po-Chuen Shieh
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University Pingtung 907 Taiwan
| | - E-Jian Lee
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University Tainan 701 Taiwan
| | - Tian-Shung Wu
- School of Pharmacy, College of Medicine, National Cheng Kung University Tainan 701 Taiwan .,Department of Pharmacy, College of Pharmacy and Health Care, Tajen University Pingtung 907 Taiwan
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7
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Sigurdardottir S, Zapadka TE, Lindstrom SI, Liu H, Taylor BE, Lee CA, Kern TS, Taylor PR. Diabetes-mediated IL-17A enhances retinal inflammation, oxidative stress, and vascular permeability. Cell Immunol 2019; 341:103921. [PMID: 31076079 DOI: 10.1016/j.cellimm.2019.04.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/03/2019] [Accepted: 04/24/2019] [Indexed: 11/25/2022]
Abstract
Diabetic retinopathy is a prevailing diabetes complication, and one of the leading causes of blindness worldwide. IL-17A is a cytokine involved in the onset of diabetic complications. In the current study, we examined the role of IL-17A in the development of retinal inflammation and long-term vascular pathology in diabetic mice. We found IL-17A expressing T cells and neutrophils in the retinal vasculature. Further, the IL-17A receptor was expressed on Muller glia, retinal endothelial cells, and photoreceptors. Finally, diabetes-mediated retinal inflammation, oxidative stress, and vascular leakage were all significantly lower in IL-17A-/- mice. These are all clinically meaningful abnormalities that characterize the onset of diabetic retinopathy.
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Affiliation(s)
- Sigrun Sigurdardottir
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Thomas E Zapadka
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Sarah I Lindstrom
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Haitao Liu
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Brooklyn E Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Chieh A Lee
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Timothy S Kern
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States; Louis Stokes VA Medical Center, Cleveland, OH, United States
| | - Patricia R Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States; Louis Stokes VA Medical Center, Cleveland, OH, United States.
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8
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Huang CY, Ahmed AF, Su JH, Sung PJ, Hwang TL, Chiang PL, Dai CF, Liaw CC, Sheu JH. Bioactive new withanolides from the cultured soft coral Sinularia brassica. Bioorg Med Chem Lett 2017. [PMID: 28648460 DOI: 10.1016/j.bmcl.2017.06.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Continuing study of the ethyl acetate (EtOAc) extract of the cultured soft coral Sinularia brassica afforded five new withanolides, sinubrasolides H-L (1-5). The structures of the new compounds were elucidated on the basis of spectroscopic analysis. The cytotoxicities of new compounds 1-5 and a known compound sinubrasolide A (6) against the proliferation of a limited panel of cancer cell lines were assayed. The anti-inflammatory activities of compounds 1-6 were evaluated by measuring their ability to suppress N-formyl-methionyl-leucyl-phenyl-alanine/cytochalasin B (fMLP/CB)-induced superoxide anion generation and elastase release in human neutrophils.
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Affiliation(s)
- Chiung-Yao Huang
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Atallah F Ahmed
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jui-Hsin Su
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan; Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
| | - Ping-Jyun Sung
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Pei-Lun Chiang
- Department of Biochemistry, University of Toronto, Toronto M5G2R3, Canada
| | - Chang-Feng Dai
- Institute of Oceanography, National Taiwan University, Taipei 112, Taiwan
| | - Chih-Chuang Liaw
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Jyh-Horng Sheu
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan; Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Frontier Center for Ocean Science and Technology, National Sun Yat-sen University, Kaohsiung 804, Taiwan.
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9
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Abstract
Plant-based Ayurvedic medicine has been practiced in India for thousands of years for the treatment of a variety of disorders. They are rich sources of bioactive compounds potentially useful for prevention and treatment of cancer. Withania somnifera (commonly known as Ashwagandha in Ayurvedic medicine) is a widely used medicinal plant whose anticancer value was recognized after isolation of steroidal compounds withanolides from the leaves of this shrub. Withaferin A is the first member of withanolides to be isolated, and it is the most abundant withanolide present in W. somnifera. Its cancer-protective role has now been established using chemically induced and oncogene-driven rodent cancer models. The present review summarizes the key preclinical studies demonstrating anticancer effects of withaferin along with its molecular targets and mechanisms related to its anticancer effects. Anticancer potential of other withanolides is also discussed.
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Casero CN, Oberti JC, Orozco CI, Cárdenas A, Brito I, Barboza GE, Nicotra VE. Withanolides from three species of the genus Deprea (Solanaceae). Chemotaxonomical considerations. PHYTOCHEMISTRY 2015; 110:83-90. [PMID: 25435174 DOI: 10.1016/j.phytochem.2014.11.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Revised: 10/29/2014] [Accepted: 11/01/2014] [Indexed: 06/04/2023]
Abstract
Nine withanolides were isolated from the aerial parts of Deprea bitteriana, Depreacuyacensis, and Depreazamorae. D.bitteriana yielded two withaphysalins, D. cuyacensis gave two 13,14-seco withaphysalins, while D. zamorae yielded five physangulidines. The compounds were fully characterized by a combination of spectroscopic methods (1D and 2D NMR and MS). All compounds isolated from D.bitteriana and D. cuyacensis were obtained as epimeric mixtures at C-18. The structure of physangulidine D was confirmed by X-ray diffraction analysis. The skeletons found in this research support the chemotaxonomical position of the genus Deprea in the tribe Physalideae.
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Affiliation(s)
- Carina N Casero
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Casilla de Correo 495, 5000 Córdoba, Argentina
| | - Juan C Oberti
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Casilla de Correo 495, 5000 Córdoba, Argentina
| | - Clara I Orozco
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Apartado 7495, Bogotá, D.C., Colombia
| | - Alejandro Cárdenas
- Instituto Universitario de Bio-Orgánica "Antonio González" IUBO-AG, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - Iván Brito
- Instituto Universitario de Bio-Orgánica "Antonio González" IUBO-AG, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - Gloria E Barboza
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Casilla de Correo 495, 5000 Córdoba, Argentina
| | - Viviana E Nicotra
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Casilla de Correo 495, 5000 Córdoba, Argentina.
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11
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García ME, Nicotra VE, Oberti JC, Ríos-Luci C, León LG, Marler L, Li G, Pezzuto JM, van Breemen RB, Padrón JM, Hueso-Falcón I, Estévez-Braun A. Antiproliferative and quinone reductase-inducing activities of withanolides derivatives. Eur J Med Chem 2014; 82:68-81. [DOI: 10.1016/j.ejmech.2014.05.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 05/15/2014] [Accepted: 05/20/2014] [Indexed: 02/01/2023]
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12
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Zhang H, Cao CM, Gallagher RJ, Day VW, Montenegro G, Timmermann BN. Withanolides from Jaborosa caulescens var. bipinnatifida. PHYTOCHEMISTRY 2014; 98:232-235. [PMID: 24314746 PMCID: PMC3947017 DOI: 10.1016/j.phytochem.2013.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 07/29/2013] [Accepted: 11/05/2013] [Indexed: 06/02/2023]
Abstract
Withanolides 2,3-dihydrotrechonolide A (1) and 2,3-dihydro-21-hydroxytrechonolide A (2) were isolated along with two known withanolides trechonolide A (3) and jaborosalactone 39 (4) from Jaborosa caulescens var. bipinnatifida (Solanaceae). The structures of 1-2 were elucidated through 2D NMR and other spectroscopic techniques. In addition, the structure of withanolide 1 was confirmed by X-ray crystallographic analysis.
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Affiliation(s)
- Huaping Zhang
- Department of Medicinal Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS 66045, USA
| | - Cong-Mei Cao
- Department of Medicinal Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS 66045, USA
| | - Robert J Gallagher
- Department of Medicinal Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS 66045, USA
| | - Victor W Day
- The Small-Molecule X-ray Crystallography Laboratory, University of Kansas, Lawrence, KS 66047, USA
| | - Gloria Montenegro
- Facultad de Agronomia e Ingenieria Forestal, Universidad Católica de Chile, Vicuna Mackenna 4860 Santiago, Chile
| | - Barbara N Timmermann
- Department of Medicinal Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS 66045, USA.
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13
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Johansen KT, Wubshet SG, Nyberg NT, Jaroszewski JW. From retrospective assessment to prospective decisions in natural product isolation: HPLC-SPE-NMR analysis of Carthamus oxyacantha. JOURNAL OF NATURAL PRODUCTS 2011; 74:2454-2461. [PMID: 22060189 DOI: 10.1021/np200780m] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An extract of Carthamus oxyacantha (wild safflower) was investigated using two approaches: a traditional, nontarget fractionation by VLC and HPLC, and the hyphenated technique HPLC-PDA-HRMS-SPE-NMR followed by targeted isolation of selected constituents for inclusion in a screening library of pure natural products. While the nontarget fractionation involved considerable time spent on pursuing fractions containing well-known or undesired compounds, the hyphenated analysis was considerably faster and required less solvent and other consumables. The results were used to design and execute an optimized, HPLC-HRMS-guided, targeted isolation scheme aiming exclusively at a series of identified spiro compounds. Thus, HPLC-PDA-HRMS-SPE-NMR is a dereplication technique of choice, allowing economical acquisition of comprehensive data about compounds in crude extracts, which can be used for rational, prospective decisions about further isolation efforts. A total of 15 compounds were identified in the extract. Six spiro compounds, of which four have not previously been characterized, and tracheloside (a lignin glucoside) are presented with assigned 1H and 13C chemical shifts.
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Affiliation(s)
- Kenneth T Johansen
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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Misico RI, Nicotra VE, Oberti JC, Barboza G, Gil RR, Burton G. Withanolides and related steroids. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2011; 94:127-229. [PMID: 21833839 DOI: 10.1007/978-3-7091-0748-5_3] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rosana I Misico
- Departamento de Química Orgánica and UMYMFOR (CONICET-UBA), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, C1428EGA, Argentina.
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Tuberoso CIG, Bifulco E, Caboni P, Cottiglia F, Cabras P, Floris I. Floral markers of strawberry tree (Arbutus unedo L.) honey. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:384-389. [PMID: 19919097 DOI: 10.1021/jf9024147] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Strawberry tree honey, due to its characteristic bitter taste, is one of the most typical Mediterranean honeys, with Sardinia being one of the largest producers. According to specific chemical studies, homogentisic acid was identified as a possible marker of this honey. This work, based on HPLC-DAD-MS/MS analysis of strawberry tree (Arbutus unedo L.) honeys, previously selected by sensory evaluation and melissopalynological analysis, showed that, in addition to the above-mentioned acid, there were other high levels of substances useful for the botanical classification of this unifloral honey. Two of these compounds were isolated and identified as (+/-)-2-cis,4-trans-abscisic acid (c,t-ABA) and (+/-)-2-trans,4-trans-abscisic acid (t,t-ABA). A third compound, a new natural product named unedone, was characterized as an epoxidic derivative of the above-mentioned acids. Structures of c,t-ABA, t,t-ABA, and unedone were elucidated on the basis of extensive 1D and 2D NMR experiments, as well as HPLC-MS/MS and Q-TOF analysis. In selected honeys the average amounts of c,t-ABA, t,t-ABA, and unedone were 176.2+/-25.4, 162.3+/-21.1, and 32.9+/-7.1 mg/kg, respectively. Analysis of the A. unedo nectar confirmed the floral origin of these compounds found in the honey. Abscisic acids were found in other unifloral honeys but not in such high amount and with a constant ratio of about 1:1. For this reason, besides homogentisic acid, these compounds could be used as complementary markers of strawberry tree honey.
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Affiliation(s)
- Carlo I G Tuberoso
- Dipartimento di Tossicologia, University of Cagliari, Ospedale 72, Cagliari, Italy.
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Chemistry and bioactivity of withanolides from south american Solanaceae. BIOACTIVE NATURAL PRODUCTS (PART L) 2005. [DOI: 10.1016/s1572-5995(05)80072-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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