应用天然产物 ›› 2021, Vol. 11 ›› Issue (2): 207-213.DOI: 10.1007/s13659-020-00278-6
Zong-Qing Huo, Qian Zhao, Wen-Tao Zhu, Xiao-Jiang Hao, Yu Zhang
Zong-Qing Huo, Qian Zhao, Wen-Tao Zhu, Xiao-Jiang Hao, Yu Zhang
摘要: Four new monoterpenoid indole alkaloids, bousmekines A-D (1-4), and one new pyranopyridine alkaloid, bousmekine E (5), were isolated from the twigs and leaves of Bousigonia angustifolia and Bousigonia mekongensis. Their structures including absolute configurations were elucidated by a combination of MS, NMR, ECD calculation, and single-crystal X-ray diffraction analysis. Compound 2 was an eburnea-type MIAs characterized by a rare chlorine atom while 5 possessed a novel pyranopyridine moiety. Their cytotoxicities against several human cancer cell lines were evaluated and compound 1 exhibited significant cytotoxicity with IC50 values of 0.8-7.4 μM.