Synthesis and X-ray crystallographic analysis of 17α-hydroxy-17-methylandrost-4-ene-17-one
作者:Rajnikant Verma、Dinesh Jasrotia、Mousmi Bhat
DOI:10.1007/s10870-005-9058-0
日期:2006.5
17α-Hydroxy-17-methylandrost-4-ene-17-one is a complex of two steroid molecules with water and its crystal structure has been determined by X-ray crystallographic techniques. The transparent plate-like crystals of this compound crystallized in the orthorhombic space group P212121, with unit cell parameters: a = 6.382(2), b = 12.841(5), c = 43.350(2) Å, λ(Mo Kα) = 0.71073 Å, Z = 8. The structure has been solved by direct methods and refined to R = 0.047, wR = 0.086. There are two crystallographically independent molecules, I and II, in the asymmetric unit. In both the molecules, rings A and D adopt a distorted half-chair conformation while rings B and C exist in chair conformation. The crystal structure is stabilized by intermolecular O−H⋯O and C−H⋯O hydrogen bonds.
17α-Hydroxy-17-methylandrost-4-ene-17-one 是两个类固醇分子与水的复合物,其晶体结构已通过 X 射线晶体学技术确定。该化合物的透明板状晶体结晶于正交空间群 P212121,单胞参数为:a = 6.382(2),b = 12.841(5),c = 43.350(2) 埃,λ(Mo Kα) = 0.71073 埃,Z = 8。不对称单元中有两个晶体学上独立的分子,即 I 和 II。在这两个分子中,环 A 和 D 采用扭曲的半对椅构象,而环 B 和 C 则以对椅构象存在。分子间的 O-H⋯O 和 C-H⋯O 氢键稳定了晶体结构。