1
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Mathew S, Zhou X, Münch G, Raju R. Exploring the Anti-Inflammatory Potential of Australian Native Plants Based on their Ethnopharmacological Knowledge. Chem Biodivers 2024; 21:e202400492. [PMID: 38700281 DOI: 10.1002/cbdv.202400492] [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: 02/27/2024] [Revised: 05/02/2024] [Accepted: 05/03/2024] [Indexed: 05/05/2024]
Abstract
Inflammation represents the inherent protective reaction of the human body to various harmful agents and noxious stimuli. Standard anti-inflammatory therapy including nonsteroidal anti-inflammatory drugs are associated with several side effects. In the past decades, people rely on medicinal plants for the treatment of inflammation. The traditional utilization of medicinal plants is regarded as a safe, cost-effective, and broadly accepted approach. In this study, anti-inflammatory activity of plants traditionally utilized by the D'harawal people in Australia has been assessed in vitro. Eighty Australian native plants were screened based on the Dharawal Pharmacopeia for their inhibitory effect on the nitric oxide (NO) production in lipopolysaccharides (LPS) and interferon (IFN)-γ stimulated RAW 264.7 murine macrophages for their anti-inflammatory activity. From the eighty ethanolic extracts screened, seventeen displayed potent NO inhibition with an IC50 recorded below 15 μg/mL. The aim of this review was to utilise the ethnopharmacological knowledge and to correlate the anti-inflammatory activity of the seventeen plants with either their known or unknown phytochemicals reported in the literature. In doing so, we have created a snapshot of Australian native plant candidates that warrant further chemical investigation associated with their anti-inflammatory activity.
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Affiliation(s)
- Shintu Mathew
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia
- Department of Pharmacology, Western Sydney University, Campbelltown Campus, Sydney, Australia
| | - Xian Zhou
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia
| | - Gerald Münch
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia
- Department of Pharmacology, Western Sydney University, Campbelltown Campus, Sydney, Australia
| | - Ritesh Raju
- Department of Pharmacology, Western Sydney University, Campbelltown Campus, Sydney, Australia
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2
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Khalifa M, Fahim JR, Allam AE, Shoman ME, El Zawily A, Kamel MS, Shimizu K, Attia EZ. Studies on the Nonalkaloidal Secondary Metabolites of Hippeastrum vittatum (L'Her.) Herb. Bulbs. ACS OMEGA 2023; 8:26749-26761. [PMID: 37546665 PMCID: PMC10398848 DOI: 10.1021/acsomega.2c07886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 07/06/2023] [Indexed: 08/08/2023]
Abstract
Sixteen chemically varied metabolites were isolated from the bulbs of Hippeastrum vittatum (L'Her.) Herb., including eight flavonoids [3'-methyl isoliquiritigenin (2), 7-hydroxyflavan (8), 7-hydroxyflavanone (9), 7-hydroxyflavan-3-ol (10), 7-methoxy-3',4'-methylenedioxyflavan-3-ol (11), 7-hydroxy-3',4'-methylenedioxy flavan (12), 2',4'-dihydroxy-3'-methyl-3,4-methylenedioxychalcone (13), and isoliquiritigenin (14)], four acetophenones [2,6-dimethoxy-4-hydroxyacetophenone (3), 2,4-dihydroxyacetophenone (4), 2,4-dihydroxy-6-methoxy-3-methylacetophenone (6), and 2,4,6-trimethoxyacetophenone (7)], two alkaloids [lycorine (1) and narciprimine (15)], one phenol derivative [p-nitrophenol (5)], and one steroid [β-sitosterol 3-O-β-glucopyranoside (16)]. Their structures were elucidated by combining one- and two-dimensional NMR and ESI-MS techniques and by comparison with the reported literature data and some authentic samples. Except for lycorine (1), the isolated metabolites were obtained herein for the first time from Hippeastrum plants, among which compound 13 was identified as a new chalcone derivative. Additionally, the total phenolic and flavonoid contents of the total ethanol extract and different fractions of the bulbs were determined by the Folin-Ciocalteu and aluminum chloride colorimetric methods, respectively, whereas their antioxidant potential was compared using the phosphomolybdenum and 2,2'-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assays. Finally, the binding affinities of compounds 1-16 to some key target proteins of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), namely, main protease (Mpro), papain-like protease (PLpro), and RNA-dependent RNA polymerase (RdRp), were screened and compared using molecular docking analysis. The possible chemotaxonomic significance of the identified metabolites was also discussed.
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Affiliation(s)
- Marwa
Fathy Khalifa
- Department
of Pharmacognosy, Faculty of Pharmacy, Minia
University, 61519 Minia, Egypt
| | - John Refaat Fahim
- Department
of Pharmacognosy, Faculty of Pharmacy, Minia
University, 61519 Minia, Egypt
| | - Ahmed E. Allam
- Department
of Pharmacognosy, Faculty of Pharmacy, Al-Azhar
University, 71524 Assiut, Egypt
| | - Mai E. Shoman
- Department
of Medicinal Chemistry, Faculty of Pharmacy, Minia University, 61519 Minia, Egypt
| | - Amr El Zawily
- Department
of Plant and Microbiology, Faculty of Science, Damanhour University, 22511 Damanhour, Egypt
- Department
of Biology, University of Iowa, Iowa City, Iowa 52242-1324, United
States
| | - Mohamed Salah Kamel
- Department
of Pharmacognosy, Faculty of Pharmacy, Minia
University, 61519 Minia, Egypt
| | - Kuniyoshi Shimizu
- Department
of Agro-Environmental Sciences, Graduate School of Bioresource and
Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, 819-0395 Fukuoka, Japan
| | - Eman Zekry Attia
- Department
of Pharmacognosy, Faculty of Pharmacy, Minia
University, 61519 Minia, Egypt
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3
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Do KM, Shin MK, Kodama T, Win NN, Prema P, Nguyen HM, Hayakawa Y, Morita H. Flavanols and Flavanes from Crinum asiaticum and Their Effects on LPS Signaling Pathway Through the Inhibition of NF-κB Activation. PLANTA MEDICA 2022; 88:913-920. [PMID: 34474490 DOI: 10.1055/a-1585-5877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Three new flavanols, (2R,3S)-7-methoxy-flavan-3-ol (1: ), (2R,3S)-7-hydroxy-flavan-3-ol (2: ), and (2R,3S)-2'-hydroxy-7-methoxy-flavan-3-ol (3: ), together with two known flavans (4: and 5: ), were isolated from the chloroform extract of Crinum asiaticum. Their structures were elucidated by various spectroscopic methods, including 1D and 2D NMR, HR-ESI-MS, and CD data. The isolated compounds 1: and 3: -5: showed inhibitory activity toward LPS-induced nitric oxide (NO) production. Further investigation of the NF-κB pathway mechanisms indicated that 1: and 3: -5: inhibited the LPS-induced IL-6 production and p65 subunit phosphorylation of NF-κB in RAW264.7 cells, with an effective dose of 10 µM.
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Affiliation(s)
- Kiep Minh Do
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Min-Kyoung Shin
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Takeshi Kodama
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Nwet Nwet Win
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Prema Prema
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
- Department of Chemistry, University of Yangon, Yangon, Myanmar
| | - Hien Minh Nguyen
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | | | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
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4
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The Phytochemistry and Pharmacology of Tulbaghia, Allium, Crinum and Cyrtanthus: ‘Talented’ Taxa from the Amaryllidaceae. Molecules 2022; 27:molecules27144475. [PMID: 35889346 PMCID: PMC9316996 DOI: 10.3390/molecules27144475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022] Open
Abstract
Amaryllidaceae is a significant source of bioactive phytochemicals with a strong propensity to develop new drugs. The genera Allium, Tulbaghia, Cyrtanthus and Crinum biosynthesize novel alkaloids and other phytochemicals with traditional and pharmacological uses. Amaryllidaceae biomolecules exhibit multiple pharmacological activities such as antioxidant, antimicrobial, and immunomodulatory effects. Traditionally, natural products from Amaryllidaceae are utilized to treat non-communicable and infectious human diseases. Galanthamine, a drug from this family, is clinically relevant in treating the neurocognitive disorder, Alzheimer’s disease, which underscores the importance of the Amaryllidaceae alkaloids. Although Amaryllidaceae provide a plethora of biologically active compounds, there is tardiness in their development into clinically pliable medicines. Other genera, including Cyrtanthus and Tulbaghia, have received little attention as potential sources of promising drug candidates. Given the reciprocal relationship of the increasing burden of human diseases and limited availability of medicinal therapies, more rapid drug discovery and development are desirable. To expedite clinically relevant drug development, we present here evidence on bioactive compounds from the genera Allium, Tulgbaghia, Cyrtanthus and Crinum and describe their traditional and pharmacological applications.
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5
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Htoo ZP, Kodama T, Win NN, Ikumi N, Shiokawa KI, Morita H. A New Sterol From the Polypore Fungus Ganoderma luteomarginatum and Its Cytotoxic Activities. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221098852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A new sterol, ganolutol A (1), together with 4 known compounds 2 to 5, were isolated from the polypore fungus Ganoderma luteomarginatum collected in Myanmar. The chemical structures of the isolated compounds were determined based on extensive spectroscopic analyses in conjunction with comparisons with published data. Compounds 1 to 4 exhibited moderate cytotoxic activities against A549 (lung), MCF-7 (breast), and HeLa (cervical) human cancer cell lines, with IC50 values ranging from 10.1 to 86.6 μM.
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Affiliation(s)
- Zin Paing Htoo
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Takeshi Kodama
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | - Nwet Nwet Win
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
| | | | | | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, Toyama, Japan
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6
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Okamoto K, Chiba K. Electrochemical Total Synthesis of Pyrrolophenanthridone Alkaloids: Controlling the Anodically Initiated Electron Transfer Process. Org Lett 2020; 22:3613-3617. [PMID: 32286833 DOI: 10.1021/acs.orglett.0c01082] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Electrochemical intramolecular C(sp2)-H cross-coupling and dehydrogenative indole synthesis were developed. Both reactions were initiated by anodic oxidation of the same electron-rich indoline moiety, but the product selectivity was controlled by different electron-transfer processes. Intramolecular cross-coupling was achieved by the generation of a strong electrophilic radical cation intermediate in the MeNO2-HFIP-LiClO4 system. Indole formation was accomplished through benzylic oxidation and continuous deprotonation. We applied these reactions to the total synthesis of natural pyrrolophenanthridone alkaloids.
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Affiliation(s)
- Kazuhiro Okamoto
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Kazuhiro Chiba
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
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7
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Nhung LTH, Linh NTT, Cham BT, Thuy TT, Tam NT, Thien DD, Huong PTM, Tan VM, Tai BH, Hoang Anh NT. New phenolics from Dianella ensifolia. Nat Prod Res 2019; 35:3063-3070. [PMID: 31711303 DOI: 10.1080/14786419.2019.1689499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Phytochemical investigation and chromatographic separation of extracts from the aerial parts of Dianella ensifolia (L.) DC. (synonym Dianella nemorosa Lam. Ex. Schiler f.) led to the isolation of 10 compounds, the structures of which were determined by HR-ESI-MS and 1 D- and 2 D-NMR spectroscopies, and by comparisons with published studies. Among the isolated compounds were three flavans, a biflavan, a biflavone, a tetralone, a naphthalen glycoside, an aromatic compound, and two steroids. Six of these were known chemicals, while three were identified as new compounds: 7-acetyl-4R,8-dihydroxy-6-methyl-1-tetralone, 2(S),2',4'-dihydroxy-7-methoxyflavan, and diaensi-biflavan. 2(S),7,4'-dimethoxy flavan was obtained for the first time as a natural product.
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Affiliation(s)
- Le Thi Hong Nhung
- Faculty of Chemical Technology, Hanoi University of Industry, Bac Tu Liem, Ha Noi, Vietnam
| | - Nguyen Thi Thuy Linh
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Ba Thi Cham
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Trinh Thi Thuy
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Nguyen Thanh Tam
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Dao Duc Thien
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Pham Thi Mai Huong
- Faculty of Chemical Technology, Hanoi University of Industry, Bac Tu Liem, Ha Noi, Vietnam
| | - Vu Minh Tan
- Faculty of Chemical Technology, Hanoi University of Industry, Bac Tu Liem, Ha Noi, Vietnam
| | - Bui Huu Tai
- Department of Structural Research, Institute of Marine Biochemistry, VAST, Hanoi, Vietnam
| | - Nguyen Thi Hoang Anh
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
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8
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Pancratium triflorum Roxb. (Amaryllidaceae) and Molineria trichocarpa (Wight) N.P. Balakr (Hypoxidaceae): Cytotoxic and antioxidant activities. Food Chem Toxicol 2018; 119:290-295. [PMID: 29596974 DOI: 10.1016/j.fct.2018.02.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/22/2018] [Accepted: 02/24/2018] [Indexed: 11/23/2022]
Abstract
The present investigation was carried out to evaluate the antioxidant and cytotoxic activities of Pancratium triflorum Roxb and Molineria trichocarpa were collected from South Vagaikulam, Tirunelveli district, Tamil Nadu, India. The antioxidant activities of P. triflorum extracts were as follows with the IC50 values methanol (228.13 μg/mL) > chloroform (311.33 μg/mL) > acetone (398.08 μg/mL) > petroleum ether (410.16 μg/mL). The antioxidant activities of P. triflorum and M. trichocarpa extracts were as follows with the IC50 values methanol (80.93 μg/mL) > acetone (98.02 μg/mL) > chloroform (186.84 μg/mL) > petroleum ether (209.64 μg/mL). Among the various extracts of P. triflorum, methanolic extracts showed the strongest phosphomolybdenum reduction (140.56 g AA/100 g). Among the tested extracts, acetone extracts of M. trichocarpa showed maximum inhibition with 71.36 ± 5.86%. In P. triflorum, chloroform extracts showed maximum inhibition (69.51%). The petroleum ether extract of M. trichocarpa was found to be most effective at which 50% mortality (LC50) and 90% mortality (LC90) of brine shrimp nauplii were found to be 29.22 and 184.82 mg/mL. This study results revealed the antioxidant and cytotoxic properties of P. triflorum and M. trichocarpa. Further investigations are needed to isolate and validate the active principles of the extract responsible various pharmacological properties.
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9
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Ding Y, Qu D, Zhang KM, Cang XX, Kou ZN, Xiao W, Zhu JB. Phytochemical and biological investigations of Amaryllidaceae alkaloids: a review. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2017; 19:53-100. [PMID: 27406068 DOI: 10.1080/10286020.2016.1198332] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Amaryllidaceae is a family that includes 75 genera and about 1100 species, which have a long history of medicinal use. Many plants have been proven to possess efficacy for neurological injury and inflammatory conditions. This article summarizes 357 Amaryllidaceae alkaloids, and cites 166 174 references over the last three decades. These alkaloids are classified into 14 skeleton types, and their abundant sources are also included. Modern pharmacology studies demonstrate that alkaloids that exclusively occur in Amaryllidaceae plant possess wide-ranging pharmacological actions, especially effects on the central nervous system, as well as antitumor, antimicrobial, and anti-inflammatory activities. Effective monomeric compounds from Amaryllidaceae screened for pharmacological activity in vivo and in vitro are also summarized.
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Affiliation(s)
- Yan Ding
- a School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
- b Institute of Chemistry and Applications of Plant Resources, Dalian Polytechnic University , Dalian 116034 , China
| | - Dan Qu
- a School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Kai-Mei Zhang
- a School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Xiao-Xin Cang
- a School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
| | - Zi-Nong Kou
- c Instrumental Analysis Center, Dalian Polytechnic University , Dalian 116034 , China
| | - Wei Xiao
- d Jiangsu Kanion Pharmaceutical Co. Ltd , Lianyungang 222001 , China
| | - Jing-Bo Zhu
- a School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , China
- b Institute of Chemistry and Applications of Plant Resources, Dalian Polytechnic University , Dalian 116034 , China
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10
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Zhu D, Miao ZY, Yang RX, Wen HM, Li W, Chen J, Kang A, Shan CX, Yu S, Hu Y. Layer-by-layer functionalized porous Zinc sulfide nanospheres-based solid-phase extraction combined with liquid chromatography time-of-flight/mass and gas chromatography-mass spectrometry for the specific enrichment and identification of alkaloids from Crinum asiaticum var. sinicum. Anal Chim Acta 2016; 932:60-8. [DOI: 10.1016/j.aca.2016.05.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/17/2016] [Accepted: 05/20/2016] [Indexed: 11/15/2022]
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11
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Fu KL, Li X, Ye J, Lu L, Xu XK, Li HL, Zhang WD, Shen YH. Chemical constituents of Narcissus tazetta var. chinensis and their antioxidant activities. Fitoterapia 2016; 113:110-6. [PMID: 27476617 DOI: 10.1016/j.fitote.2016.07.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/18/2016] [Accepted: 07/27/2016] [Indexed: 10/21/2022]
Abstract
Two new flavan derivatives tazettones C-D (1-2), one new β-coumaranone (tazettone E, 3), one new flavan (tazettone F, 4), and one new phenylpropanoid (tazettone G, 5), together with six known flavonoids (6-11), were isolated from the bulbs of Narcissus tazetta var. chinensis Roem. Their structures were elucidated by spectroscopic analysis. In addition, the structures of 1-3 were confirmed by single crystal X-ray diffraction. All isolated compounds were tested for antioxidant activity by Cell Counting Kit-8 (CCK-8) assay. Compounds 6-8 and 10-11 exhibited potent antioxidant activity against H2O2-induced impairment in human SH-SY5Y neuroblastoma cells at tested concentrations.
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Affiliation(s)
- Ka-Li Fu
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Xian Li
- School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology of Natural Products, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Ji Ye
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Lu Lu
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Xi-Ke Xu
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Hui-Liang Li
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Wei-Dong Zhang
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China; Shanghai Institute of Pharmaceutical Industry, Shanghai 200400, China.
| | - Yun-Heng Shen
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
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12
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Rozmer Z, Perjési P. Naturally occurring chalcones and their biological activities. PHYTOCHEMISTRY REVIEWS 2016. [PMID: 0 DOI: 10.1007/s11101-014-9387-8] [Citation(s) in RCA: 175] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
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13
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14
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Ren J, Zhang Y, Jin H, Yu J, Zhou Y, Wu F, Zhang W. Novel inhibitors of human DOPA decarboxylase extracted from Euonymus glabra Roxb. ACS Chem Biol 2014; 9:897-903. [PMID: 24471650 DOI: 10.1021/cb500009r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Dopamine, a biogenic amine with important biological functions, is produced from l-DOPA by DOPA decarboxylase (DDC). DDC is a potential target to modulate the production of dopamine in several pathological states. Known inhibitors of DDC have been used for treatment of Parkinson's disease but suffered low specificity and diverse side effects. In the present study, we identified and characterized a novel class of natural-product-based selective inhibitors for DDC from the extract of Euonymus glabra Roxb. by a newly developed high-throughput enzyme assay. The structures of these inhibitors are dimeric diarylpropane, a unique chemical structure containing a divalent dopamine motif. The most effective inhibitors 5 and 6 have an IC50 of 11.5 ± 1.6 and 21.6 ± 2.7 μM in an in vitro purified enzyme assay, respectively, but did not inhibit other homologous enzymes. Compound 5 but not 6 dose-dependently suppressed the activity of hDDC and dopamine levels at low micromolar concentrations in cells. Furthermore, structure-activity relationship analyses revealed that p-benzoquinone might be a crucial moiety of these inhibitors for inhibiting hDDC. The natural-product-based selective inhibitors of hDDC could serve as a chemical lead for developing improved drugs for dopamine-related disease states.
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Affiliation(s)
| | - Yuanyuan Zhang
- Key
Laboratory of Exploration and Utilization of Aquatic Genetic Resources,
Ministry of Education, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
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15
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Abstract
Plants of the Amaryllidaceae family are known as producers of biologically active alkaloids. Besides these a variety of flavonoids, including flavones, chalcones and chromones, have been detected in the Amaryllidaceous plants. In this study, we have analysed 16 representatives of the family for the presence of isoflavonoids. The water/ethanolic extracts were analysed with HPLC-ESI-MS both without any pre-treatment and after immunoaffinity chromatography as a clean-up step. Four individual immunosorbents specific for biochanin A, daidzein and genistein were used. In addition, five enzyme-linked immunosorbent assays specific for the above-mentioned isoflavonoids and their derivatives have been used for the analysis of the extracts after fractionation by semi-preparative HPLC. Fifteen selected isoflavonoids were detected in the studied samples, and the amount of individual compounds ranged between ca. 0.8 and 400 ng/g of dry weight. This study extends the number of known isoflavonoid-producing families within the monocotyledonous plants.
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Affiliation(s)
- Petra Mikšátková
- a Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology , Institute of Chemical Technology Prague , Technická 5, 166 28 Prague , Czech Republic
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16
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Facile construction of pyrrolophenanthridone skeleton via a one-pot intramolecular Heck reaction and oxidation. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Urinary Metabolites of Isoliquiritigenin in Wistar Rats using UHPLC–TOF–MS-based Xenometabolomics. Chromatographia 2011. [DOI: 10.1007/s10337-011-2072-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Sun Q, Shen YH, Tian JM, Tang J, Su J, Liu RH, Li HL, Xu XK, Zhang WD. Chemical constituents of Crinum asiaticum L. var. sinicum Baker and their cytotoxic activities. Chem Biodivers 2010; 6:1751-7. [PMID: 19842135 DOI: 10.1002/cbdv.200800273] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A phytochemical investigation of the bulbs of Crinum asiaticum L. var. sinicum Baker resulted in the isolation of two new alkaloids, asiaticumines A and B (1 and 2, resp.), together with 21 known compounds, including nine alkaloids, four amides, five phenolic compounds, and three flavonoids. All 23 compounds were isolated for the first time from Crinum asiaticum L. var. sinicum Baker. Their structures were elucidated by spectroscopic methods. In addition, ten alkaloids, 1-10, were evaluated for their cytotoxic activities against human tumor cell lines A549, LOVO, HL-60, and 6T-CEM. Compounds 3, 4, and 7-10 selectively showed remarkable inhibition against one or more of the tested cell lines.
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Affiliation(s)
- Qian Sun
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
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Cuendet M, Guo J, Luo Y, Chen S, Oteham CP, Moon RC, van Breemen RB, Marler LE, Pezzuto JM. Cancer chemopreventive activity and metabolism of isoliquiritigenin, a compound found in licorice. Cancer Prev Res (Phila) 2010; 3:221-32. [PMID: 20068129 DOI: 10.1158/1940-6207.capr-09-0049] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Isoliquiritigenin (2',4',4-trihydroxychalcone; ILG), a chalcone found in licorice root and many other plants, has shown potential chemopreventive activity through induction of phase II enzymes such as quinone reductase-1 in murine hepatoma cells. In this study, the in vivo metabolism of ILG was investigated in rats. In addition, ILG glucuronides and ILG-glutathione adducts were observed in human hepatocytes and in livers from rats treated with ILG. ILG glucuronides were detected in both plasma and rat liver tissues. In addition, in a full-term cancer chemoprevention study conducted with 7,12-dimethylbenz(a)anthracene-treated female Sprague-Dawley rats, dietary administration of ILG slightly increased tumor latency but had a negative effect on the incidence of mammary tumors starting at approximately 65 days after 7,12-dimethylbenz(a)anthracene administration. Further, no significant induction of phase II enzymes was found in mammary glands, which is consistent with the low level of ILG observed in these tissues. However, ILG significantly induced quinone reductase-1 activity in the colon, and glutathione as well as glutathione S-transferase in the liver. Analysis of mRNA expression in tissues of rats treated with ILG supported these findings. These results suggest that ILG should be tested for chemopreventive efficacy in nonmammary models of cancer.
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Affiliation(s)
- Muriel Cuendet
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
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Guo J, Liu A, Cao H, Luo Y, Pezzuto JM, van Breemen RB. Biotransformation of the chemopreventive agent 2',4',4-trihydroxychalcone (isoliquiritigenin) by UDP-glucuronosyltransferases. Drug Metab Dispos 2008; 36:2104-12. [PMID: 18653743 DOI: 10.1124/dmd.108.021857] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
2',4',4-trihydroxychalcone (isoliquiritigenin), a chalcone found in licorice root and shallots, exhibits antioxidant, estrogenic, and antitumor activities. To complement our previous studies concerning the phase 1 metabolism of isoliquiritigenin, the phase 2 transformation of isoliquiritigenin by human hepatocytes and pooled human liver microsomes (HLMs) was investigated using liquid chromatography/tandem mass spectrometry and UV absorbance. Five glucuronides were detected corresponding to monoglucuronides of isoliquiritigenin and liquiritigenin, but no sulfate conjugates were observed. The UDP-glucuronosyltransferases (UGTs) involved in the formation of the major glucuronide conjugates were identified using recombinant human UGTs in combination with liquid chromatography/mass spectrometry. UGT1A1 and UGT1A9 were the major enzymes responsible for the formation of the most abundant conjugate, isoliquiritigenin 4'-O-glucuronide (MG5), with Km values of 4.30+/-0.47 and 3.15+/-0.24 microM, respectively. UGT1A1 and UGT1A10 converted isoliquiritigenin to the next most abundant phase 2 metabolite, isoliquiritigenin 2'-O-glucuronide (MG4), with Km values of 2.98+/-0.8 and 25.8+/-1.3 microM, respectively. In addition, isoliquiritigenin glucuronides MG4 and MG5 were formed by pooled human intestine and kidney microsomes, respectively. Based on the in vitro determination of a 25.3-min half-life for isoliquiritigenin when incubated with HLMs, the intrinsic clearance of isoliquiritigenin was estimated to be 36.4 ml/min/kg. These studies indicate that isoliquiritigenin will be conjugated rapidly in the liver to form up to five monoglucuronides.
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Affiliation(s)
- Jian Guo
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, 833 S. Wood St., Chicago, IL 60612-7231, USA
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Guo J, Liu D, Nikolic D, Zhu D, Pezzuto JM, van Breemen RB. In vitro metabolism of isoliquiritigenin by human liver microsomes. Drug Metab Dispos 2007; 36:461-8. [PMID: 18006650 DOI: 10.1124/dmd.107.018721] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Isoliquiritigenin (2',4',4-trihydroxychalcone), a chalcone found in licorice root and other plants, has shown potent antitumor, antioxidant, and phytoestrogenic activity in vitro. In preparation for in vivo studies, the metabolism of isoliquiritigenin by human liver microsomes was investigated, and seven phase 1 metabolites were identified. In addition to aromatic hydroxylation that occurred on the A or B ring to form 2',4,4',5'-tetrahydroxychalcone or butein, respectively, reduction of the carbon-carbon double bond of an alpha,beta-unsaturated ketone and cyclization occurred to form 2',4,4'-trihydroxydihydrochalcone and (Z/E)-6,4'-dihydroxyaurone. All metabolites were characterized and identified by using liquid chromatography-tandem mass spectrometry with comparison to authenticated compounds. Finally, monoclonal antibody inhibitors of specific human cytochrome P450 (P450) enzymes and recombinant human P450 enzymes were used to identify the enzymes responsible for the formation of the major mono-oxygenated metabolites, and P450 2C19 was found to be a significant enzyme in the formation of butein from isoliquiritigenin, which also has anticancer activity. Cytochromes P450, reactive oxygen species, and peroxidases can all contribute to the formation of (Z/E)-6,4'-dihydroxyaurone in human liver microsomes.
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Affiliation(s)
- Jian Guo
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy, 833 S. Wood St., Chicago, IL 60612-7231, USA
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Zhu Y, Zhang P, Yu H, Li J, Wang MW, Zhao W. Anti-Helicobacter pylori and thrombin inhibitory components from Chinese dragon's blood, Dracaena cochinchinensis. JOURNAL OF NATURAL PRODUCTS 2007; 70:1570-7. [PMID: 17883259 DOI: 10.1021/np070260v] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Chemical studies on the constituents of Dracaena cochinchinensis led to the discovery of eight new flavonoid derivatives ( 1- 8) along with 14 known compounds ( 9- 22). The identification and structural elucidation of these isolates were based on spectral analyses. All isolates were tested for antibacterial activities against Helicobacter pylori (ATCC43504) and thrombin inhibitory effects. As a result, new flavonoid derivatives 6 and 7 and (2 S)-4',7-dihydroxy-8-methylflavan ( 11) were found to be most efficacious against H. pylori (ATCC43504) with MIC values of 29.5, 29.5, and 31.3 microM, respectively, and the seven new flavonoid derivatives ( 1- 7) and one known biflavonoid ( 9) were observed to exhibit moderate thrombin inhibitory activity.
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Affiliation(s)
- Yingdong Zhu
- Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
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Louw CAM, Regnier TJC, Korsten L. Medicinal bulbous plants of South Africa and their traditional relevance in the control of infectious diseases. JOURNAL OF ETHNOPHARMACOLOGY 2002; 82:147-154. [PMID: 12241989 DOI: 10.1016/s0378-8741(02)00184-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Natural products are becoming more important in modern-day society as man is moving away from synthetic products, which can be detrimental to the environment and human health. Scientific research on the healing properties and bioactivity of natural compounds, especially of plant origin, has been extensive particularly in the Western world. However, a rich heritage of floral biodiversity is found in developing countries. South Africa, a country with a strong history of traditional healing, hosts a variety of around 30000 plant species. Indigenous bulbous plants of importance to South African traditional healers mainly belong to the Amaryllidaceae and Hyacinthaceae families. A number of these plants have particular uses as disinfectants and anti-inflammatory agents, although there is still a lack of scientific research regarding their unique pharmacological compounds.
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Affiliation(s)
- C A M Louw
- Department of Microbiology and Plant Pathology, Faculty of Natural and Agricultural Sciences, University of Pretoria, South Africa.
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Abstract
Alkaloids isolated from Crinum species have been reviewed for the period 1985-2000. Non-nitrogenous compounds have been surveyed for the first time. Botanical classification and biological activity are discussed. Spectral data literature sources are listed.
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Affiliation(s)
- Nguyen Thi Ngoc Tram
- Vietnam Pharmaceutical Corporation, Laboratory for Chemistry and Technology of Natural Substances, 24 Nguyen Thi Nghia Str., Dist. 1, Ho Chi Min City, Viet Nam
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Fennell CW, van Staden J. Crinum species in traditional and modern medicine. JOURNAL OF ETHNOPHARMACOLOGY 2001; 78:15-26. [PMID: 11585683 DOI: 10.1016/s0378-8741(01)00305-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Crinums are large, showy plants with umbels of lily-like flowers. They are found in tropical and subtropical regions throughout the world, where, for centuries, they have been used traditionally to cure ailments and diseases. Sometimes they are prescribed for the same medicinal purpose. This would suggest that they contain a common ingredient. Phytochemical analysis has recently yielded a vast array of compounds, including more than 150 different alkaloids. These are of the Amaryllidaceae type, whose most noted effects are: analgesic, anticholinergic, antitumour and antiviral. Even though much has been reported on the medicinal properties of Crinum, only an estimated 20% of the species worldwide are represented in these analyses, as reviewed in this paper.
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Affiliation(s)
- C W Fennell
- Research Centre for Plant Growth and Development, School of Botany and Zoology, Faculty of Science and Agriculture, University of Natal-Pietermaritzburg, Private Bag X01, 3209, Scottsville, South Africa
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