1986 Volume 34 Issue 4 Pages 1846-1849
Five new diarylheptanoids, yashabushidiol A and B, yashabushiketodiol A and B, and yashabushitriol, have been isolated from the male flowers of Alnus sieboldiana MATSUM. and their absolute structures determined by spectral methods and chemical transformations to known yashabushiketol and dihydroyashabushiketol.