TY - JOUR
T1 - Structure of 6 alpha-methylprogesteron-17 alpha-yl pivalate.
AU - Wawrzak, Z.
AU - Grochulski, P.
AU - Gałdecki, Z.
AU - Duax, W. L.
AU - Strong, P. D.
AU - Kirk, D. N.
PY - 1991/2/15
Y1 - 1991/2/15
N2 - C27H40O4, Mr = 428.6, orthorhombic, P2(1)2(1)2(1), a = 9.821(3), b = 25.766(6), c = 9.802(3) A, V = 2480(2) A3, Z = 4, Dx = 1.15 g cm-3, lambda(Mo K alpha) = 0.71073 A, mu = 0.70 cm-1, F(000) = 936, T = 295 K, final R = 0.063 for 2778 observed reflections. The A ring assumes a normal 1 alpha,2 beta-half-chair conformation. The progesterone side chain has a conformation typical of 17 alpha-ester steroids; the C(16)-C(17)-C(20)-O(20) torsion angle is -17.9(5) degrees.
AB - C27H40O4, Mr = 428.6, orthorhombic, P2(1)2(1)2(1), a = 9.821(3), b = 25.766(6), c = 9.802(3) A, V = 2480(2) A3, Z = 4, Dx = 1.15 g cm-3, lambda(Mo K alpha) = 0.71073 A, mu = 0.70 cm-1, F(000) = 936, T = 295 K, final R = 0.063 for 2778 observed reflections. The A ring assumes a normal 1 alpha,2 beta-half-chair conformation. The progesterone side chain has a conformation typical of 17 alpha-ester steroids; the C(16)-C(17)-C(20)-O(20) torsion angle is -17.9(5) degrees.
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U2 - 10.1107/s0108270190005935
DO - 10.1107/s0108270190005935
M3 - Article
C2 - 2025401
AN - SCOPUS:0026424394
SN - 0108-2701
VL - 47 ( Pt 2)
SP - 385
EP - 388
JO - Acta crystallographica. Section C, Crystal structure communications
JF - Acta crystallographica. Section C, Crystal structure communications
ER -