Two betalains from Portulaca grandiflora

Phytochemistry
1991.0

Abstract

We report here two new natural betaxanthins that occur in the flowers of Portulaca grandiflora. The first, portulacaxanthin II, was shown to be the tyrosine-immonium conjugate of betalamic acid and the second, portulacaxanthin III, the glycine-immonium conjugate of the same chromophore.

DOI： 10.1016/0031-9422(91)85035-X

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