CRYSTAL AND MOLECULAR-STRUCTURE OF LOROACETYL-CARBAMATE)-13-HYDROXY-MARASM-7-EN-5-OIC ACID GAMMA-LACTONE

The crystal and molecular structure of hloroacerylcarbamate)-13-hydrox y-marasm-7-en-5-oic acid gamma-lactone (2) has been determined by X-ra y diffraction methods. A crystalline derivative 2 has been obtained by condensation of the oily 13-hydroxy-marasm-7-en-5-oic acid gamma-lact one (1) with trichloroacetyl isocyanate. Compound 2 crystallizes in an orthorhombic system, space group P2(1)2(1)2(1), with cell dimensions a = 10.3101(7), b = 11.465(2), and c = 16.580(1) Angstrom. The expecte d conformation of marasmene skeleton as postulated from other spectral investigations of 1 was fully confirmed.