TY - JOUR
T1 - 21-Acetoxy-17α-4-pregnene-3,20-dione
AU - Dey, Raja
AU - Chanda, S.
AU - Pal, A.
AU - Roychowdhury, S.
PY - 2005/4/1
Y1 - 2005/4/1
N2 - The synthetic steroid 21-acetoxy-17α-4-pregnene-3,20-dione, C 23H32O4, crystallizes with a single molecule in the asymmetric unit. The molecule contains four fused rings, typical of steroids. The cyclohexene ring A has nearly the conformation of a boat. One saturated six-membered ring, B, is intermediate between chair and half-chair conformations, while the other six-membered ring, C, is essentially a chair. The five-membered ring D tends towards a twist conformation. The ring junction A/B is quasi-trans, whereas the ring junctions B/C and C/D are both trans. The molecule is slightly convex towards the β side.
AB - The synthetic steroid 21-acetoxy-17α-4-pregnene-3,20-dione, C 23H32O4, crystallizes with a single molecule in the asymmetric unit. The molecule contains four fused rings, typical of steroids. The cyclohexene ring A has nearly the conformation of a boat. One saturated six-membered ring, B, is intermediate between chair and half-chair conformations, while the other six-membered ring, C, is essentially a chair. The five-membered ring D tends towards a twist conformation. The ring junction A/B is quasi-trans, whereas the ring junctions B/C and C/D are both trans. The molecule is slightly convex towards the β side.
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U2 - 10.1107/S1600536805007415
DO - 10.1107/S1600536805007415
M3 - Article
AN - SCOPUS:18544387638
SN - 1600-5368
VL - 61
SP - o980-o982
JO - Acta Crystallographica Section E: Structure Reports Online
JF - Acta Crystallographica Section E: Structure Reports Online
IS - 4
ER -