Abstract
As a preliminary test for the synthesis of terracinoic acid, one of the alkaline decomposition products of Terramycin, 1-keto-3-methyl-2-indanylacetic acid and 1-keto-5-hydroxy-3-methyl-2-indanylacetic acid were successfully prepared. It was also proved that the latter acid and its methyl ester methyl ether were identical with the decarboxyterracinoic acid and its methyl ester methyl ether obtained by Pasternack as one of the alkaline decomposition products of Terramycin.