Studies in the biochemistry of micro-organisms

Abstract

Geodin (C15H6O5Cl2(OCH3)2) and erdin (C15H7O6Cl2(OCH3)) each give rise to a dihydro-derivative on catalytic reduction, dihydrogeodin being the methyl ester of dihydroerdin. As a result of analytical and synthetic methods dihydrogeodin trimethyl ether, C14H5OCl2 (OCH3)4COOCH3, has been shown to be methyl 3[image],5[image]-dichloro-4,6,2[image],6[image] - tetramethoxy - 4[image] - methylbenzophenone -2-carboxylate and dihydroerdin trimethyl ether, C14H5OCl2-(OCH3)4COOH, to be 3[image],5[image]-dichloro-4,6,2[image],6[image]-tetramethoxy-4[image]-methylbenzophenone-2-carboxylic acid.