Crystal‐ and molecular structure of 19‐nor‐digitoxigenin

Abstract

19-iior-Digitoxigeniii crystallizcs in the orthorhombic space group P 2,2,2, with four formula units C22H3204 per unit cell. The lattice parameters are a = 7.082, b = 12.476, c = 21.486 A. The crystal structure was determined by direct methods and rcfinetl by a least-squares procedure to the discrepancy factor R = 0.042. -The oricntation of the lactone ring ralativc to the steroid skeleton was found to be the opposite of that known for tligitoxigcnin. 19-nor-Digitoxigenin kristallisiert in der orthorhombischen