ISSN:
0941-1216
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Two New Pregnan Ester Glycosides from Gongronema latifolium (Asclepiadaceae)Two so far unknown pregnan ester glycosides named 3-O-[β-D-Glucopyranosyl-(1→4)-6-deoxy-3-O-methyl-β-D-allopyranosyl-(1→4)-β-D-oleandropyranosyl]-11, 12-di-O-tigloyl-17β-marsdenin (1) and 3-O-[β-D-Glucopyranosyl-(1→4)-6-deoxy-3-O-methyl-β-D-allopyranosyl-(1→4)-β-D-canaropyranosyl]-11, 12-di-O-tigloyl-17β-marsdenin (2) were isolated from the chloroform extract of the leaves of Gongronema latifolium Benth. et Hook. (Asclepiadaceae). Their structures have essentially been established by one- and two-dimensional NMR methods (NOE difference spectroscopy, NOESY, HH-COSY, CH-COSY, HMBC).
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19933350606
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