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Li H, Liang YR, Chen SX, Wang WX, Zou Y, Nuryyeva S, Houk KN, Xiong J, Hu JF. Amentotaxins C-V, Structurally Diverse Diterpenoids from the Leaves and Twigs of the Vulnerable Conifer Amentotaxus argotaenia and Their Cytotoxic Effects. JOURNAL OF NATURAL PRODUCTS 2020; 83:2129-2144. [PMID: 32633512 DOI: 10.1021/acs.jnatprod.0c00064] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A phytochemical investigation of the MeOH extract of the leaves and twigs of Amentotaxus argotaenia, a relict vulnerable coniferous species endemic to China, led to the isolation and characterization of 35 diterpenoids/norditerpenoids. Twenty of these are new, including 11 ent-kaurane-type (amentotaxins C-M, 1-11, respectively), three icetexane-type [= 9(10→20)abeo-abietane-type (amentotaxins N-P, 12-14, respectively)], four ent-labdane-type (amentotaxins Q-T, 15-18, respectively), and two isopimarane-type [amentotaxins U (19) and V (20)] compounds. Their structures were elucidated on the basis of spectroscopic data, single-crystal X-ray diffraction, the modified Mosher's method, and electronic circular dichroism data analyses. Compounds 1-9 are rare 18-nor-ent-kaurane-type diterpenoids featuring a 4β,19-epoxy ring. All the isolates were evaluated for their cytotoxic effects against a small panel of cultured human cancer cell lines (HeLa, A-549, MDA-MB-231, SKOV3, Huh-7, and HCT-116), and some of them exhibited cytotoxicities with IC50 values ranging from 1.5 to 10.0 μM.
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Affiliation(s)
- Hao Li
- School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, People's Republic of China
| | - Yu-Ru Liang
- School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, People's Republic of China
| | - Shao-Xin Chen
- Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, No. 285 Gebaini Road, Shanghai 201203, People's Republic of China
| | - Wen-Xuan Wang
- Xiangya School of Pharmaceutical Sciences, Central South University, Tongzipolu 172, Changsha 410013, People's Republic of China
| | - Yike Zou
- Department of Chemistry & Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Selbi Nuryyeva
- Department of Chemistry & Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - K N Houk
- Department of Chemistry & Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Juan Xiong
- School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, People's Republic of China
| | - Jin-Feng Hu
- School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, People's Republic of China
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Liang R, Chen K, Zhang Q, Zhang J, Jiang H, Zhu S. Rapid Access to 2‐Methylene Tetrahydrofurans and γ‐Lactones: A Tandem Four‐Step Process. Angew Chem Int Ed Engl 2016; 55:2587-91. [DOI: 10.1002/anie.201511133] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 12/28/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Renxiao Liang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Kai Chen
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Qiaohui Zhang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Jiantao Zhang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Shifa Zhu
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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Liang R, Chen K, Zhang Q, Zhang J, Jiang H, Zhu S. Rapid Access to 2‐Methylene Tetrahydrofurans and γ‐Lactones: A Tandem Four‐Step Process. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511133] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Renxiao Liang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Kai Chen
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Qiaohui Zhang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Jiantao Zhang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Shifa Zhu
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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