Journal of the Chemical Society. Chemical communications p. 241 - 242 (1982)
Update date:2022-08-05
Topics:
Foo, L. Yeap
Porter, Lawrence J.
Procyanidin polymers isolated from Palmae species contain 2,3-cis 5,7,3',4'-tetrahydroxyflavan-3-ol units predominantly of the abnormal (2S,3S) configuration, but also containing about 25percent of units with a (2R,3R) configuration, the proportion of each enantiomer was determined by the stereo- and regio-specific condensation of each unit's carbocation with (2S,3S)-(+)- or (2R,3R)-(-)-epicatechin and resolution of the diastereoisomeric C(4)-C(8) linked epicatechin dimers.
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