B. Bohm
Sep 1, 1968
Citations
0
Influential Citations
8
Citations
Journal
Phytochemistry
Abstract
Abstract 4 , 7-Dimethoxy-5-hydroxyflavanone has been identified as a major constituent of the alkali-soluble fraction of the foliar exudate of Pityrogramma calomelanos (L.) Link. This compound does not occur naturally in the exudate but is formed by the alkali-catalyzed cyclization of 2 , 6 - dihydroxy-4,4 - dimethoxychalcone. This chalcone and compounds with closely related structures have been found in varieties of P. chrysophylla suggesting that this substitution pattern may be a useful chemosystematic characteristic for the genus.