Structure of pescaproside E (cas 138068-93-6), a fatty acid glycoside from Ipomoea pescaprae☆

Add time:08/16/2019    Source:sciencedirect.com

Three fatty acid glycosides, designated pescaprosides A, B, and E, have been isolated from Ipomoea pescaprae (family Convolvulaceae). Chemical studies on pescaproside E, the major product, led to its characterisation as a pentaglycoside of 11-hydroxyhexadecanoic acid. Its sugar chain was esterified with 2-methylbutanoic and lauric acids. The structure of the pentaglycoside has been established as O-α-l-rhamnopyranosyl-(1 → 3)-O-[α-l-rhamnopyranosyl-(1 → 4)]-O-α-l-rhamnopyranosyl-(1 → 4)-O-β-d- fucopyranosyl-(1 → 2)-O-α-l-rhamnopyranosyl-(1 → 11)-oxyhexadecanoic acid.

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