Biscarpamontamines A and B, an Aspidosperma-Iboga Bisindole Alkaloid and an Aspidosperma-Aspidosperma Bisindole Alkaloid, from Tabernaemontana sphaerocarpa

[摘要]：Two new bisindole alkaloids, biscarpamontamine A (1), possessing an aspidosperma-iboga-type skeleton, and biscarpamontamine B (2), having an aspidosperma-aspidosperma-type skeleton, were isolated from stems of Tabernaemontana sphaerocarpa, and their structures were elucidated on the basis of spectroscopic data analysis. The absolute configuration of biscarpamontamine B (2) was established by comparison of its CD spectrum and with that of vobtusine (3). Biscarpamontamine B (2) showed potent cytotoxicity against various human cancer cell lines.

[全文传递流程]：

一般上传文献全文的时限在1个工作日内