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Zhao CX, Liu H, Zhang X, Yang MY, Wang YT, Xing YJ, Hua JX, Zhang Q, Li DH, Bai J, Jing YK, Hua HM. Cephalotaxine-type and homoerythrina-type alkaloids with antiproliferative effects from Cephalotaxus fortunei. Org Biomol Chem 2022; 20:7076-7084. [PMID: 36004441 DOI: 10.1039/d2ob01242a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Twenty-two cephalotaxine-type and ten homoerythrina-type alkaloids, including seven previously undescribed ones, were isolated from the twigs and leaves and the seed kernels of Cephalotaxus fortunei. Their structures were established by spectroscopic analysis, single crystal X-ray diffraction, and ECD calculation methods. Cephalofortunine A β-N-oxide (1) is the first nitrogen-oxidized homoerythrina-type alkaloid. The isolated compounds were evaluated for their in vitro antiproliferative effects against two human leukemia cell lines (THP-1 and K562). All compounds showed different levels of antiproliferation in THP-1 and K562 cells with GI50 values of 0.24-29.55 μM. Hainanensine (31) was the most active against two cancer cell lines with GI50 values of 0.24 ± 0.07, and 0.29 ± 0.01 μM, respectively.
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Affiliation(s)
- Chun-Xue Zhao
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Hui Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 10016, PR China.
| | - Xin Zhang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Meng-Yue Yang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Yue-Tong Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 10016, PR China.
| | - Yi-Jia Xing
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Jun-Xin Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Qin Zhang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Da-Hong Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Jiao Bai
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
| | - Yong-Kui Jing
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 10016, PR China.
| | - Hui-Ming Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, China.
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2
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Yu GX, Wu J, Shi BB, Bao MF, Cai XH. Enantiomeric Cephalotaxus alkaloids from seeds of Cephalotaxus oliveri. NATURAL PRODUCTS AND BIOPROSPECTING 2022; 12:24. [PMID: 35778536 PMCID: PMC9249953 DOI: 10.1007/s13659-022-00344-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/12/2022] [Indexed: 06/15/2023]
Abstract
Five undescribed alkaloids were isolated from the seeds of Cephalotaxus oliveri along with 27 known ones. The new structures were elucidated based on spectroscopic data including 1D and 2D NMR, MS and calculated ECD spectra. Among them, (+)-acetylcephalofortine C was an enantiomeric Cephalotaxine alkaloids. The performed bioassay revealed that those alkaloids were not cytotoxic against cancer cells and had no neuroprotective properties in the HEI-OC-1 cells model.
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Affiliation(s)
- Guang-Xing Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Jing Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Bao-Bao Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Mei-Fen Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of 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, People's Republic of China.
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3
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Dorababu A. Update of Recently (2016–2020) Designed Azepine Analogs and Related Heterocyclic Compounds with Potent Pharmacological Activities. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2041677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Jiang C, Xue J, Yuan Y, Li Y, Zhao C, Jing Q, Zhang X, Yang M, Han T, Bai J, Li Z, Li D, Hua H. Progress in structure, synthesis and biological activity of natural cephalotane diterpenoids. PHYTOCHEMISTRY 2021; 192:112939. [PMID: 34536803 DOI: 10.1016/j.phytochem.2021.112939] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/29/2021] [Accepted: 09/04/2021] [Indexed: 06/13/2023]
Abstract
The Cephalotaxus genus is well-known owing to the numerous complex, biologically relevant natural products that can be obtained from its constituent species. The successful identification of various Cephalotaxus alkaloids and natural, structurally diverse cephalotane diterpenoids that exhibit antitumor activities and excellent pharmacological properties has encouraged the discovery of previously undescribed compounds from this genus. The present review summarizes the different strategies for the total synthesis of cephalotane diterpenoids as well as their diverse chemical structures, antitumor activities, structure-activity relationships (SARs), and biosynthetic pathways.
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Affiliation(s)
- Chunyu Jiang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Jingjing Xue
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Yizhen Yuan
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Yanzhi Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Chunxue Zhao
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Qinxue Jing
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Xin Zhang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Mengyue Yang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Tong Han
- Department of Pharmaceutical Engineering, College of Life Science & Technology, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing, 163319, PR China
| | - Jiao Bai
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Zhanlin Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China
| | - Dahong Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China.
| | - Huiming Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, and School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China.
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Ethnopharmacology, chemodiversity, and bioactivity of Cephalotaxus medicinal plants. Chin J Nat Med 2021; 19:321-338. [PMID: 33941338 DOI: 10.1016/s1875-5364(21)60032-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Indexed: 12/16/2022]
Abstract
Cephalotaxus is the only genus of Cephalotaxaceae family, and its natural resources are declining due to habitat fragmentation, excessive exploitation and destruction. In many areas of China, folk herbal doctors traditionally use Cephalotaxus plants to treat innominate swollen poison, many of which are cancer. Not only among Han people, but also among minority ethnic groups, Cephalotaxus is used to treat various diseases, e.g., cough, internal bleeding and cancer in Miao medicine, bruises, rheumatism and pain in Yao medicine, and ascariasis, hookworm disease, scrofula in She medicine, etc. Medicinal values of some Cephalotaxus species and compounds are acknowledged officially. However, there is a lack of comprehensive review summarizing the ethnomedicinal knowledge of Cephalotaxus, relevant medicinal phytometabolites and their bioactivities. The research progresses in ethnopharmacology, chemodiversity, and bioactivities of Cephalotaxus medicinal plants are reviewed and commented here. Knowledge gaps are pinpointed and future research directions are suggested. Classic medicinal books, folk medicine books, herbal manuals and ethnomedicinal publications were reviewed for the genus Cephalotaxus (Sanjianshan in Chinese). The relevant data about ethnobotany, phytochemistry, and pharmacology were collected as comprehensively as possible from online databases including Scopus, NCBI PubMed, Bing Scholar, and China National Knowledge Infrastructure (CNKI). "Cephalotaxus", and the respective species name were used as keywords in database search. The obtained articles of the past six decades were collated and analyzed. Four Cephalotaxus species are listed in the official medicinal book in China. They are used as ethnomedicines by many ethnic groups such as Miao, Yao, Dong, She and Han. Inspirations are obtained from traditional applications, and Cephalotaxus phytometabolites are developed into anticancer reagents. Cephalotaxine-type alkaloids, homoerythrina-type alkaloids and homoharringtonine (HHT) are abundant in Cephalotaxus, e.g., C. lanceolata, C. fortunei var. alpina, C. griffithii, and C. hainanensis, etc. New methods of alkaloid analysis and purification are continuously developed and applied. Diterpenoids, sesquiterpenoids, flavonoids, lignans, phenolics, and other components are also identified and isolated in various Cephalotaxus species. Alkaloids such as HHT, terpenoids and other compounds have anticancer activities against multiple types of human cancer. Cephalotaxus extracts and compounds showed anti-inflammatory and antioxidant activities, immunomodulatory activity, antimicrobial activity and nematotoxicity, antihyperglycemic effect, and bone effect, etc. Drug metabolism and pharmacokinetic studies of Cephalotaxus are increasing. We should continue to collect and sort out folk medicinal knowledge of Cephalotaxus and associated organisms, so as to obtain new enlightenment to translate traditional tips into great therapeutic drugs. Transcriptomics, genomics, metabolomics and proteomics studies can contribute massive information for bioactivity and phytochemistry of Cephalotaxus medicinal plants. We should continue to strengthen the application of state-of-the-art technologies in more Cephalotaxus species and for more useful compounds and pharmacological activities.
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6
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Li S, Li XY, Zhang TJ, Zhu J, Liu KL, Wang DP, Meng FH. Novel 4,5-dihydrospiro[benzo[c]azepine-1,1'-cyclohexan]-3(2H)-one derivatives as PARP-1 inhibitors: Design, synthesis and biological evaluation. Bioorg Chem 2021; 111:104840. [PMID: 33780687 DOI: 10.1016/j.bioorg.2021.104840] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/21/2021] [Accepted: 03/17/2021] [Indexed: 11/19/2022]
Abstract
To further explore the research of novel PARP-1 inhibitors, we designed and synthesized a series of novel amide PARP-1 inhibitors based on our previous research. Most compounds displayed certain antitumor activities against four tumor cell lines (A549, HepG2, HCT-116, and MCF-7). Specifically, the candidate compound R8e possessed strong anti-proliferative potency toward A549 cells with the IC50 value of 2.01 μM. Compound R8e had low toxicity to lung cancer cell line. And the in vitro enzyme inhibitory activity of compound R8e was better than rucaparib. Molecular docking studies provided a rational binding model of compound R8e in complex with rucaparib. The following cell cycle and apoptosis assays revealed that compound R8e could arrest cell cycle in the S phase and induce cell apoptosis. Western blot analysis further showed that compound R8e could effectively inhibit the PAR's biosynthesis and was more effective than rucaparib. Overall, based on the biological activity evaluation, compound R8e could be a potential lead compound for further developing novel amide PARP-1 inhibitors.
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Affiliation(s)
- Shuai Li
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Xin-Yang Li
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Ting-Jian Zhang
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Ju Zhu
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Kai-Li Liu
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - De-Pu Wang
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China
| | - Fan-Hao Meng
- School of Pharmacy, China Medical University, 77 Puhe Road, North New Area, Shenyang 110122, China.
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7
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Jia T, Zeng G, Zhang C, Zeng L, Zheng W, Li S, Wu K, Shao J, Zhang J, Zhu H. The reaction of prop-2-ynylsulfonium salts and sulfonyl-protected β-amino ketones to epoxide-fused 2-methylenepyrrolidines and S-containing pyrroles. Chem Commun (Camb) 2021; 57:2657-2660. [PMID: 33587730 DOI: 10.1039/d0cc07745c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A novel divergent domino annulation reaction of prop-2-ynylsulfonium salts with sulfonyl-protected β-amino ketones has been developed, affording various epoxide-fused 2-methylenepyrrolidines and S-containing pyrroles in moderate to excellent yields. Prop-2-ynylsulfonium salts act as C2 synthons in the reactions providing a promising epoxide-fused skeleton in a single operation with readily accessible starting materials.
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Affiliation(s)
- Tingting Jia
- School of Medicine, Zhejiang University City College, Hangzhou, 310015, P. R. China.
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8
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Ma GL, Guo N, Wang XL, Li J, Jin ZX, Han Y, Dong SZ, Xiong J, Hu JF. Cytotoxic secondary metabolites from the vulnerable conifer Cephalotaxus oliveri and its associated endophytic fungus Alternaria alternate Y-4-2. Bioorg Chem 2020; 105:104445. [DOI: 10.1016/j.bioorg.2020.104445] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/21/2020] [Accepted: 10/28/2020] [Indexed: 12/20/2022]
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9
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Design, synthesis and biological evaluation of homoerythrina alkaloid derivatives bearing a triazole moiety as PARP-1 inhibitors and as potential antitumor drugs. Bioorg Chem 2020; 94:103385. [DOI: 10.1016/j.bioorg.2019.103385] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 10/08/2019] [Accepted: 10/21/2019] [Indexed: 11/22/2022]
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10
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Shen B, Liu W, Cao W, Liu X, Feng X. Asymmetric Synthesis of α,β-Epoxy-γ-lactams through Tandem Darzens/Hemiaminalization Reaction. Org Lett 2019; 21:4713-4716. [PMID: 31184915 DOI: 10.1021/acs.orglett.9b01589] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A catalytic asymmetric tandem Darzens/hemiaminalization reaction of glyoxals with α-bromo-β-esteramides or α-bromo-β-ketoamide was accomplished in the presence of a chiral N,N'-dioxide/Yb(III) complex. Various chiral α,β-epoxy-γ-lactams were obtained in moderate to good yields with excellent diastereo- and enantioselectivities. The versatility of the transformation is illustrated in the formal synthesis of berkeleyamide D.
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Affiliation(s)
- Bin Shen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Wen Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Weidi Cao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
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11
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Feng Q, Li B, Feng Y, Li X, Ma X, Wang H, Chen G. Isolation and identification of two new compounds from the twigs and leaves of Cephalotaxus fortunei. J Nat Med 2019; 73:653-660. [PMID: 30976949 DOI: 10.1007/s11418-019-01308-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 04/04/2019] [Indexed: 11/30/2022]
Abstract
Two new compounds, namely 5-hydroxy-7-methoxy-6-methylchromone (1), and sesquiterpene X (6), together with 21 known compounds were isolated from the twigs and leaves of Cephalotaxus fortunei Hook. f. The structures of 1-23 were elucidated on the basis of spectroscopic analysis (1D/2D NMR, HR-ESI-MS and IR) and comparison with literature. The absolute configuration of compound 6 was determined by means of electronic circular dichroism calculation. The in vitro anti-inflammatory activities of all compounds were assayed in RAW 264.7 cells by assessing lipopolysaccharide-induced nitric oxide production. Compounds 1 and 6 exhibited weak effects with percentage inhibitions of 24% and 35.60%, respectively. In addition, compounds 4, 9, and 14 have the potential to be developed as therapeutic agents for inflammatory diseases because of their significant anti-inflammatory activities and high content in C. fortunei.
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Affiliation(s)
- Qingmei Feng
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Wenhua Road 103, Shenyang, Liaoning Province, 110016, China
| | - Bingxin Li
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Wenhua Road 103, Shenyang, Liaoning Province, 110016, China
| | - Yuan Feng
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Wenhua Road 103, Shenyang, Liaoning Province, 110016, China
| | - Xingyu Li
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Wenhua Road 103, Shenyang, Liaoning Province, 110016, China
| | - Xiaorui Ma
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Wenhua Road 103, Shenyang, Liaoning Province, 110016, China
| | - Haifeng Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Wenhua Road 103, Shenyang, Liaoning Province, 110016, China
| | - Gang Chen
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China.
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Wenhua Road 103, Shenyang, Liaoning Province, 110016, China.
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Luo K, Zhao Y, Zhang J, He J, Huang R, Yan S, Lin J, Jin Y. Enantioselective Epoxypyrrolidines via a Tandem Cycloaddition/Autoxidation in Air and Mechanistic Studies. Org Lett 2018; 21:423-427. [PMID: 30588819 DOI: 10.1021/acs.orglett.8b03605] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A tandem cycloaddition/autoxidation reaction between heterocyclic ketene aminals and diazoester in air is described for the enantioselective preparation of epoxypyrrolidines. Notably, the results of mechanistic studies suggest that epoxide was oxidized from an sp3 C-C single bond, which is of mechanistic and practical interest as this protocol may be suitable for constructing other bioactive heterocyclic epoxides.
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Affiliation(s)
- Kaixiu Luo
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Yongqiang Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Jiawei Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Jia He
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Rong Huang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Shengjiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
| | - Yi Jin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology , Yunnan University , Kunming 650091 , P. R. China
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Pérard-Viret J, Quteishat L, Alsalim R, Royer J, Dumas F. Cephalotaxus Alkaloids. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2017; 78:205-352. [PMID: 28838429 PMCID: PMC7110560 DOI: 10.1016/bs.alkal.2017.07.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cephalotaxus alkaloids represent a family of plant secondary metabolites known for 60 years. Significant activity against leukemia in mice was demonstrated for extracts of Cephalotaxus. Cephalotaxine (CET) (1), the major alkaloid of this series was isolated from Cephalotaxus drupacea species by Paudler in 1963. The subsequent discovery of promising antitumor activity among new Cephalotaxus derivatives reported by Chinese, Japanese, and American teams triggered extensive structure elucidation and biological studies in this family. The structural feature of this cephalotaxane family relies mainly on its tetracyclic alkaloid backbone, which comprises an azaspiranic 1-azaspiro[4.4]nonane unit (rings C and D) and a benzazepine ring system (rings A and B), which is linked by its C3 alcohol function to a chiral oxygenated side chain by a carboxylic function alpha to a tetrasubstituted carbon center. The botanical distribution of these alkaloids is limited to the Cephalotaxus genus (Cephalotaxaceae). The scope of biological activities of the Cephalotaxus alkaloids is mainly centered on the antileukemic activity of homoharringtonine (HHT) (2), which in particular demonstrated marked benefits in the treatment of orphan myeloid leukemia and was approved as soon as 2009 by European Medicine Agency and by US Food and Drug Administration in 2012. Its exact mechanism of action was partly elucidated and it was early recognized that HHT (2) inhibited protein synthesis at the level of the ribosome machinery. Interestingly, after a latency period of two decades, the topic of Cephalotaxus alkaloids reemerged as a prolific source of new natural structures. To date, more than 70 compounds have been identified and characterized. Synthetic studies also regained attention during the past two decades, and numerous methodologies were developed to access the first semisynthetic HHT (2) of high purity suitable for clinical studies, and then high grade enantiomerically pure CET (1), HHT (2), and analogs.
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Affiliation(s)
- Joëlle Pérard-Viret
- Université Paris Descartes, CNRS, Université Sorbonne Paris Cité, Paris, France
| | - Laith Quteishat
- Université Paris Sud, CNRS, Université Paris Saclay, Châtenay-Malabry, France
| | - Rana Alsalim
- Université Paris Sud, CNRS, Université Paris Saclay, Châtenay-Malabry, France
| | - Jacques Royer
- Université Paris Descartes, CNRS, Université Sorbonne Paris Cité, Paris, France
| | - Françoise Dumas
- Université Paris Sud, CNRS, Université Paris Saclay, Châtenay-Malabry, France
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Ni L, Schinnerl J, Bao MF, Zhang BJ, Wu J, Cai XH. Two key biogenetic intermediates of Cephalotaxus alkaloids from Cephalotaxus oliveri and C. lanceolata. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Ni L, Zhong XH, Cai J, Bao MF, Zhang BJ, Wu J, Cai XH. Five New Alkaloids from Cephalotaxus lanceolata and C. fortunei var. alpina. NATURAL PRODUCTS AND BIOPROSPECTING 2016; 6:149-154. [PMID: 27016921 PMCID: PMC5385657 DOI: 10.1007/s13659-016-0093-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/13/2016] [Indexed: 06/05/2023]
Abstract
Five new alkaloids (1-5) were isolated from the leaves and twigs of Cephalotaxus lanceolata and C. fortunei var. alpina along with 24 known alkaloids. The new structures were elucidated based on spectroscopic data including 1D and 2D NMR, FTIR, UV and MS. These new alkaloids showed no cytotoxicity to HeLa, SGC-7901 gastric cancer, and A-549 lung cancer cell lines.
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Affiliation(s)
- Ling Ni
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Xiu-Hong Zhong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Jie Cai
- Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Mei-Fen Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Bing-Jie Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Jing Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of 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, People's Republic of China.
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Liu XL, Jing DH, Yao Z, Zhang WH, Liu XW, Yang ZJ, Zhao Z, Zhou Y, Li XN. DABCO-catalyzed sp3 C–H activation: rapid access to isoxazole or coumarin-fused 3-quaternary carbon oxindoles and isoxazole-fused pyrrolidinones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Moirangthem DS, Talukdar NC, Kasoju N, Bora U. Antioxidant, antibacterial, cytotoxic, and apoptotic activity of stem bark extracts of Cephalotaxus griffithii Hook. f. Altern Ther Health Med 2012; 12:30. [PMID: 22469333 PMCID: PMC3364904 DOI: 10.1186/1472-6882-12-30] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 04/03/2012] [Indexed: 12/20/2022]
Abstract
Background Cephalotaxus spp. are known to possess various therapeutic potentials. Cephalotaxus griffithii, however, has not been evaluated for its biological potential. The reason may be the remoteness and inaccessibility of the habitat where it is distributed. The main aim of this study was to: (1) evaluate multiple biological potentials of stem bark of C. griffithii, and (2) identify solvent extract of stem bark of C. griffithii to find the one with the highest specific biological activity. Methods Dried powder of stem bark of C. griffithii was exhaustively extracted serially by soaking in petroleum ether, acetone and methanol to fractionate the chemical constituents into individual fractions or extracts. The extracts were tested for total phenolic and flavonoid content, antioxidant (DPPH radical scavenging, superoxide radical scavenging, and reducing power models), antibacterial (disc diffusion assay on six bacterial strains), cytotoxic (MTT assay on HeLa cells), and apoptotic activity (fluorescence microscopy, DNA fragmentation assay, and flow cytometry on HeLa cells). Results Among the three extracts of stem bark of C. griffithii, the acetone extract contained the highest amount of total phenolics and flavonoids and showed maximum antioxidant, antibacterial, cytotoxic (IC50 of 35.5 ± 0.6 μg/ml; P < 0.05), and apoptotic (46.3 ± 3.6% sub-G0/G1 population; P < 0.05) activity, followed by the methanol and petroleum ether extracts. However, there was no significant difference observed in IC50 values (DPPH scavenging assay) of the acetone and methanol extracts and the positive control (ascorbic acid). In contrast, superoxide radical scavenging assay-based antioxidant activity (IC50) of the acetone and methanol extracts was significantly lower than the positive control (P < 0.05). Correlation analysis suggested that phenolic and flavonoid content present in stem bark of C. griffithii extracts was responsible for the high antioxidant, cytotoxic, and apoptotic activity (P < 0.05). Conclusions Stem bark of C. griffithii has multiple biological effects. These results call for further chemical characterization of acetone extract of stem bark of C. griffithii for specific bioactivity.
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Zhang YM, Chen YG, Huang ZX. Chemical composition of the essential oil of Cephalotaxus lanceolata fresh leaves. Chem Nat Compd 2012. [DOI: 10.1007/s10600-012-0185-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abdelkafi H, Nay B. Natural products from Cephalotaxus sp.: chemical diversity and synthetic aspects. Nat Prod Rep 2012; 29:845-69. [DOI: 10.1039/c2np20037f] [Citation(s) in RCA: 140] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Perscheid M, Schollmeyer D, Nubbemeyer U. First Synthesis of Medium-Sized Ring Allenyl Lactams. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100830] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Completed preparative separation of alkaloids from Cephaltaxus fortunine by step-pH-gradient high-speed counter-current chromatography. J Chromatogr A 2009; 1216:4663-7. [DOI: 10.1016/j.chroma.2009.03.083] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Revised: 03/23/2009] [Accepted: 03/30/2009] [Indexed: 11/19/2022]
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Machado MB, Lopes LMX. Tetraflavonoid and biflavonoids from Aristolochia ridicula. PHYTOCHEMISTRY 2008; 69:3095-102. [PMID: 18561961 DOI: 10.1016/j.phytochem.2008.04.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 04/15/2008] [Accepted: 04/29/2008] [Indexed: 05/13/2023]
Abstract
Biflavones, a chalcone-flavone, and a tetraflavonoid with a new carbon skeleton were isolated from the leaves of Aristolochia ridicula. Their structures were determined by chemical derivatizations and spectrometric analyses.
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Affiliation(s)
- Marcos B Machado
- São Paulo State University-UNESP, Instituto de Química, C.P. 355, 14801-970 Araraquara, São Paulo, Brazil
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Saeed MK, Deng Y, Dai R. Attenuation of Biochemical Parameters in Streptozotocin-induced Diabetic Rats by Oral Administration of Extracts and Fractions of Cephalotaxus sinensis. J Clin Biochem Nutr 2008; 42:21-8. [PMID: 18231626 PMCID: PMC2212347 DOI: 10.3164/jcbn2008004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Accepted: 04/06/2007] [Indexed: 11/22/2022] Open
Abstract
Cephalotaxus sinensis (C. sinensis) large size, evergreen tree common in China and utilized for numerous effective pharmacological applications in Chinese traditional medicine. The hepato-renal effects of C. sinensis were evaluated in vivo using Streptozotocin (STZ)-induced diabetic rats as an tentative model. Animals were orally treated with 80% EtOH extract (aq.EE), H(2)O extract (WtE) and ethylacetate (EaF)/butanol fractions (BtF) of C. sinensis (200 mg/kg, b.w.) for 28 days whereas control received vehicle merely. The degree of fortification was measured by using biochemical parameters like serum transaminases (ALT and AST), alkaline phosphatase (ALP), creatinine, urea and urine sugar. Meanwhile, the histopathological studies were conducted out to support the above parameters. Administration of C. sinensis aq.EE/BtF (p<0.05) and EaF (p<0.01) patently prevented STZ-induced elevation levels of serum ALT, AST, ALP, creatinine, urea, urine sugar and increase body weight respectively, which were comparable with the standard drug tolbutamide, while WtE did not show any significant effect (p>0.05). Phytochemical studies revealed the presence of saponins, terpenes, sterols and flavonoids in C. sinensis which could be responsible for the possible hepato-renal protective action. The results sustain the fact that the extract/fractions of C. sinensis have an immense potential to be developed further into a phytomedicine.
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Affiliation(s)
| | | | - Rongji Dai
- School of Life Sciences and Technology, Beijing Institute of Technology (BIT), Beijing 100081, China
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Saeed MK, Deng Y, Dai R. Attenuation of Biochemical Parameters in Streptozotocin-induced Diabetic Rats by Oral Administration of Extracts and Fractions of Cephalotaxus sinensis. J Clin Biochem Nutr 2008. [DOI: 10.3164/jcbn.2008004] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Muhammad K. Saeed
- School of Life Sciences and Technology, Beijing Institute of Technology (BIT)
| | - Yulin Deng
- School of Life Sciences and Technology, Beijing Institute of Technology (BIT)
| | - Rongji Dai
- School of Life Sciences and Technology, Beijing Institute of Technology (BIT)
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Li W, Deng Y, Dai R, Yu Y, Saeed MK, Li L, Meng W, Zhang X. Chromatographic fingerprint analysis of Cephalotaxus sinensis from various sources by high-performance liquid chromatography–diodearray detection–electrospray ionization-tandem mass spectrometry. J Pharm Biomed Anal 2007; 45:38-46. [PMID: 17651936 DOI: 10.1016/j.jpba.2007.05.027] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2007] [Revised: 05/16/2007] [Accepted: 05/21/2007] [Indexed: 11/30/2022]
Abstract
Selective and efficient analytical methods are required not only for quality assurance but also for authentication of Chinese herbal medicine. A simple, rapid and valid fingerprint method has been first carried out for the quality control of Cephalotaxus sinensis by using high-performance liquid chromatography (HPLC) coupled with photodiode array detection (DAD) and electrospray ionisation-tandem mass spectrometry (ESI-MS). The characteristic analytical fingerprints of this plant extract showed 18 common peaks, and out of these, 10 compounds involving 2 new compounds were identified by comparing the retention time, UV and ESI-MS/MS spectrum of each standard with those of each peak separated by on-line HPLC-DAD-MS/MS. Moreover, the effects of collecting locations, harvesting time, storage time, drying methods, and medicinal portions on herbal chromatographic fingerprints were examined by similarity analysis and principal component analysis (PCA) along with markers. Using the reference fingerprint along with markers, the best harvesting time, cultivation location and medicinal part were determined. The results obtained suggest that the chromatographic fingerprint combining similarity evaluation and PCA along with markers or pharmacologically active constituents can efficiently identify raw herb of Cephalotaxus sinensis from different sources, which provide helpful clues to the study of plant's secondary metabolites and benefit quality control.
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Affiliation(s)
- Wei Li
- School of Life Science and Technology, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, PR China; Beijing BIT&GY Pharmaceutical R&D, Beijing 100081, PR China
| | - Yulin Deng
- School of Life Science and Technology, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, PR China.
| | - Rongji Dai
- School of Life Science and Technology, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, PR China; Beijing BIT&GY Pharmaceutical R&D, Beijing 100081, PR China.
| | - Yuhong Yu
- School of Life Science and Technology, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, PR China; Beijing BIT&GY Pharmaceutical R&D, Beijing 100081, PR China
| | - Muhammad Khalid Saeed
- School of Life Science and Technology, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, PR China
| | - Liang Li
- School of Life Science and Technology, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, PR China; Beijing BIT&GY Pharmaceutical R&D, Beijing 100081, PR China
| | - Weiwei Meng
- School of Life Science and Technology, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, PR China; Beijing BIT&GY Pharmaceutical R&D, Beijing 100081, PR China
| | - Xinsheng Zhang
- Beijing BIT&GY Pharmaceutical R&D, Beijing 100081, PR China
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Antiplatelet Effect and Selective Binding to Cyclooxygenase (COX) by Molecular Docking Analysis of Flavonoids and Lignans. Int J Mol Sci 2007. [DOI: 10.3390/i8080830] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Li W, Dai RJ, Yu YH, Li L, Wu CM, Luan WW, Meng WW, Zhang XS, Deng YL. Antihyperglycemic Effect of Cephalotaxus sinensis Leaves and GLUT-4 Translocation Facilitating Activity of Its Flavonoid Constituents. Biol Pharm Bull 2007; 30:1123-9. [PMID: 17541165 DOI: 10.1248/bpb.30.1123] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The objectives of this study were to investigate the antihyperglycemic effect of Cephalotaxus sinensis leaves and to identify the active components. The antihyperglycemic effect of various fractions (FA, FB, FC, FD) of the 80% ethanol extract of the leaves was evaluated in streptozotocin (STZ)-induced diabetic rats. Among the tested fractions, FC was the most active. FC (0.48 g/kg) given orally for 10 d reduced significantly (p<0.001) the blood glucose of STZ-induced diabetic rats. The food and water intakes of FC (0.48 g/kg)-treated diabetic rats were reduced significantly (p<0.001) when compared to the 0.5% carboxymethyl cellulose (CMC)-treated diabetic rats. The activity-guided fractionation of the ethanol extract of C. sinensis leaves furnished three flavonoid compounds, apigenin-5-O-[alpha-L-rhamnopyranosyl-(1-->4)-6-O-beta-D-acetylglucopyranoside] (1), apigenin (2), and apigenin-5-O-[alpha-L-rhamnopyranosyl-(1-->4)-6-O-beta-D-glucopyranoside] (3). The elevation of GLUT-4 protein level in membrane preparations from mice adipocytes was detected by Western blot analysis after adipocytes were pre-incubated with FC (0.1, 1, 10 mg/ml), apigenin (0.1, 2 mg/ml) and apigenin-5-O-[alpha-L-rhamnopyranosyl-(1-->4)-6-O-beta-D-acetylglucopyranoside] (0.1, 2 mg/ml), respectively. Phytochemical investigation and HPLC-DAD analysis of FC indicated that the flavonoids were the major constituents in this fraction. These results suggest that the fraction from C. sinensis leaves is a promising drug for the treatment of diabetes, and that the flavonoids from this plant are the active constituents.
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Affiliation(s)
- Wei Li
- School of Life Science and Technology, Beijing Institute of Technology, PR China
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Lee MK, Lim SW, Yang H, Sung SH, Lee HS, Park MJ, Kim YC. Osteoblast differentiation stimulating activity of biflavonoids from Cephalotaxus koreana. Bioorg Med Chem Lett 2006; 16:2850-4. [PMID: 16574412 DOI: 10.1016/j.bmcl.2006.03.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2005] [Revised: 02/24/2006] [Accepted: 03/07/2006] [Indexed: 10/24/2022]
Abstract
Six amentoflavone-type biflavonoids, bilobetin (1), ginkgetin (2), 4',7''-di-O-methyl-amentoflavone (3), 7-O-methyl-isoginkgetin (4), sciadopitysin (5), and 7,4',7'',4'''-O-methyl-amentoflavone (6), were isolated from the EtOAc fraction of Cephalotaxus koreana Nakai (Cephalotaxaceae) by bioactivity-guided fractionation technique using primary cultures of mouse osteoblasts as an in vitro assay system. Among the six biflavonoids isolated, bilobetin (1), sciadopitysin (5), and 7,4',7'',4'''-O-methyl-amentoflavone (6) significantly increased osteoblast differentiation as assessed by alkaline phosphatase activity, collagen synthesis, and mineralization. Considering structure-activity relationship, methoxyl groups at 4' and 4''' in the B rings in amentoflavone-type biflavonoid might be important in osteoblast differentiation. Taken together, our present study suggests therapeutic potential of biflavonoids against bone diseases such as osteoporosis.
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Affiliation(s)
- Mi Kyeong Lee
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul 151-742, Republic of Korea
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Machado MB, Lopes LMX. Chalcone-flavone tetramer and biflavones from Aristolochia ridicula. PHYTOCHEMISTRY 2005; 66:669-674. [PMID: 15771888 DOI: 10.1016/j.phytochem.2005.01.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2004] [Revised: 12/07/2004] [Indexed: 05/24/2023]
Abstract
Biflavones and a chalcone-flavone tetramer were isolated from the leaves of Aristolochia ridicula, together with proto-quercitol. Their structures were determined by spectroscopic methods.
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Affiliation(s)
- Marcos B Machado
- Instituto de Química, Universidade Estadual Paulista, Campus de Araraquara, UNESP, C.P. 355, 14801-970 Araraquara, São Paulo, Brazil
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