Conyzagenin-A and B, two new epimeric lanostane triterpenoids fromConyza canadensis
摘要:
Two new epimeric lanostane triterpenoids Conyzagenin-A (1) and Conyzagenin-B (2) were isolated from roots of Conyza canadensis, along with nine known compounds (3-11). The structures of these triterpenoids were elucidated by detailed spectral methods and chemical derivatisation.