| Literature DB >> 28876071 |
Yu-Xi Yuan1, Yu Zhang, Ling-Li Guo, Yue-Hu Wang, Masuo Goto2, Susan L Morris-Natschke2, Kuo-Hsiung Lee2,3, Xiao-Jiang Hao.
Abstract
Tabercorymines A (1) and B (2), two new vobasinyl-ibogan-type bisindole alkaloids with an unprecedented skeleton, were isolated from Tabernaemontana corymbosa. Their structures were established by a combination of spectroscopic data, chemical transformation, single-crystal X-ray diffraction, and ECD calculation. Compound 1 represents a novel bisindole alkaloid, characterized by a caged heteropentacyclic ring system incorporating an unprecedented C-7/C-20 bond in the vobasinyl unit. Alkaloids 1 and 2 showed potent antiproliferative activity against several human cancer cell lines, including vincristine-resistant KB.Entities:
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Year: 2017 PMID: 28876071 PMCID: PMC6421835 DOI: 10.1021/acs.orglett.7b02445
Source DB: PubMed Journal: Org Lett ISSN: 1523-7052 Impact factor: 6.005