Two New Megastigmanes from the Leaves of Cucumis sativus
作者:Hisahiro Kai、Masaki Baba、Toru Okuyama
DOI:10.1248/cpb.55.133
日期:——
Two new megastigmane, cucumegastigmanes I (1) and II (2), together with a known megastigmane, (+)-dehydrovomifoliol (3), and five other known compounds were isolated from the leaves of Cucumis sativus. The structures of the new compounds were elucidated from spectroscopic analysis and their absolute stereochemistries were determined in detail using the chemical conversion and a modified Mosher's method.