A New Steroidal Alkaloid from the Roots of Cynanchum caudatum

Abstract

A new steroidal alkaloid, 12-O-nicotinoylsarcostin, gagamine (1), was isolated from the roots of Cynanchum caudatum Max. (Asclepiadaceae), together with a known alkaloid, gagaminine (2). Their structures were established using spectroscopic methods, some ¹³C-NMR data of 2 have to be revised.

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