Biological studies on indole derivatives. I. Synthesis and pharmacological studies of 2-oxo-3-indolyl derivatives.

Two compounds, 3-hydroxy-3-acetonyl-oxindole (I) and compound 3-acetonylidene-oxindole (II) were synthesized by a convenient method, and their pharmacological/toxicological effects were studied in rabbit. These compounds produced transitory effects on serum enzymes. The cholesterol mobilizing effect is more prominent with compound (I).