The crystal and molecular structures ofthe title compounds were determined by x-ray diffractometric analysis. Torsion angles and puckering parameters are reportedfor both compounds. In 1 the 5alpha-cyano group influences the A-ring conformation. The carbonate ester 3 crystallizes in the monoclinic P2, space group with two molecules (I and ll) in the asymmetric unit. The D-ring conformation is to some extent different between I and ll
X-RAY STRUCTURE ANALYSIS OF 3,11,17-TRIOXOANDROSTANE-5A-CARBONITRILE AND OF 17A-ETHOXYCARBONYLOXY-3-OXOANDROST-4-ENE-17-CARBONITRILE / D. DONATI; M. GINANNESCHI; M. CHELLI; G. RAPI; A.M. PAPINI. - In: STEROIDS. - ISSN 0039-128X. - STAMPA. - 57:(1992), pp. 502-506.
X-RAY STRUCTURE ANALYSIS OF 3,11,17-TRIOXOANDROSTANE-5A-CARBONITRILE AND OF 17A-ETHOXYCARBONYLOXY-3-OXOANDROST-4-ENE-17-CARBONITRILE
M. GINANNESCHI;PAPINI, ANNA MARIA
1992
Abstract
The crystal and molecular structures ofthe title compounds were determined by x-ray diffractometric analysis. Torsion angles and puckering parameters are reportedfor both compounds. In 1 the 5alpha-cyano group influences the A-ring conformation. The carbonate ester 3 crystallizes in the monoclinic P2, space group with two molecules (I and ll) in the asymmetric unit. The D-ring conformation is to some extent different between I and ll
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