Megastigmane glycosides and an acylated triterpenoid from Eriobotrya japonica

Citation
H. Ito et al., Megastigmane glycosides and an acylated triterpenoid from Eriobotrya japonica, J NAT PROD, 64(6), 2001, pp. 737-740
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Agricultural Chemistry","Pharmacology & Toxicology
Journal title
JOURNAL OF NATURAL PRODUCTS
ISSN journal
0163-3864 → ACNP
Volume
64
Issue
6
Year of publication
2001
Pages
737 - 740
Database
ISI
SICI code
0163-3864(200106)64:6<737:MGAAAT>2.0.ZU;2-N
Abstract
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.