Abstract
The leucoanthocyanidin of Karada bark ( Cleistanthus collinus) has been isolated, and its acetate and methyl ether have been prepared and their properties and reactions studied. It is found to be a (−)-leucodelphinidin (5:7:3′:4′:5′-pentahydroxyflavan-3:4-diol). a dextro-rotatory leucodelphinidin is found in the kino (gum) obtained from Eucalyptus pilularis and it gives a different series of derivatives.
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