论文信息 - Isolation and identification of (—)‐gallocatechin gallate and circular dichroism of green tea flavanols

Isolation and identification of (—)‐gallocatechin gallate and circular dichroism of green tea flavanols

Partly raceme (—)-gallocatechin gallate was isolated from green tea by counter-current distributins and column chromatography on Sephadex LH-20. The structure was proven by mass spectroscopy of the pertrimethylsilyl ether and by n.m.r. and circular dichroism (c.d.). The compound is probably an artifact produced by heating (—)-epigallocatechin gallate. Circular dichroism curves of several tea flavanols are presented.

D. Frost | O. Korver | C. K. Wilkins | K. Weinges | J. D. Bruijn

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