M. Miyakoshi et al., 3-ALPHA-HYDROXY-OLEANENE TYPE TRITERPENE GLYCOSYL ESTERS FROM LEAVES OF ACANTHOPANAX-SPINOSUS, PART-3, Phytochemistry, 46(7), 1997, pp. 1255-1259
Four novel 3 alpha-hydroxy-oleanane type triterpene oligoglycosyl este
rs, spinoside C2, C3, C6 and C7, were isolated from the leaves of Acan
thopanax spinosus. The structures were established to be 28-O-alpha-L-
rhamnopyranosyl(1 --> 4)-beta-D-glucopyranosyl(1 --> 6)-beta-D-glucopy
ranosyl esters of 3 alpha, 30-dihydroxy-23-oxo-olean-12-en-28-oic acid
, 3 alpha, 20 alpha-dihydroxy-30-nor-olean-12-en-28-oic acid, 3 alpha,
20 alpha-dihydroxy-23-oxo-30-nor-olean-12-en-28-oic acid and 3 alpha,
20 alpha, 23-trihydroxy-30-nor-olean-12-en-28-oic acid. (C) 1997 Publ
ished by Elsevier Science Ltd.