2β-Ethynyl-5β,17β-dihydroxy-3,4-bisnorandrostane 17-acetate

Abstract

Abstract. C2tH3003, M= 330, orthorhombic, P212t21 ;a= 7.570 (1), b= 11.043 (3), c= 22.815 (7) .~, V= 1907.2 A s, Z=4, de = 1"15 g cm -3. Final R=0.074 for 1353 observed reflexions. Unusual stereochemistry is exhibited by ring A and the A/B ring junction.Introduction.