A new triterpenoid glycoside L-I 1 , the 28-O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl ester of 3β,23,27-trihydroxylup-20(29)-en-28-oic acid, is isolated from the leaves of Scheffleropsis angkae(Araliaceae). Its structure is established by chemical methods and various NMR techniques (1H, 13C, APT, COSY, TOCSY, ROESY, HSQC, HMBC). 3β,23,27-Trihydroxylup-20(29)-en-28-oic acid is a new triterpenoid aglycone.
13C, TOCSY, COSY, ROESY, HSQC, Scheffleropsis angkae, new triterpenoid glycoside, 28-O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl ester of 3β, 23, 27-trihydroxylup-20(29)-en-28-oic acid, NMR (1H, APT, HMBC).
Publication DOI: 10.1023/A:1002843624564Journal NLM ID: 0047757Publisher: New York: Kluwer Academic/Plenum Publishers
Institutions: N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia, V.I. Vernadskii Tavricheskii National University, Simferopol
Methods: 13C NMR, 1H NMR, deacetylation, NMR-2D, TLC, acid hydrolysis, extraction, acetylation, CC, evaporation
Found