Two new megastigmane glycosides, eriojaposides A (1) and B (2), and a new a
cylated triterpenoid (3) were isolated along with nine known compounds from
a leaf extract of Eriobotrya japonica. The structures of 1-3 were characte
rized as (6R,9R)-3-oxo-alpha -ionyl-9-O-beta -xylopyranosyl-(1 " -->6 ')-be
ta -glucopyranoside (6R,9R)-3-oxo-alpha -ionyl-9-O-alpha -rhamnopyranosyl-(
1 " -->6 ')-beta -glucopyranoside, and 3 alpha -trans-feruloyloxy-2 alpha -
hydroxyurs-12-en-28-oic acid, respectively, on the basis of spectral and ch
emical evidence.