Constituents of the higher fungi. Part XIII. 2-Aryl-3-methoxymaleic anhydrides from pulvinic acid derivatives. A convenient method for determination of structure of fungal and lichen pulvinic acid derivatives
Abstract
Fully methylated pulvinic acid derivatives are degraded by alkali to 2-aryl-3-methoxymaleic anhydrides and aryl-acetic acids. The products formed indicate the structure of the pulvinic acid.