6β-Methyl-3,20-dioxopregn-4-en-17-yl acetate
نویسندگان
چکیده
منابع مشابه
6β-Methyl-3,20-dioxopregn-4-en-17-yl acetate
The title compound, C(24)H(34)O(4), is a precursor of Megestrol acetate. Ring A has a half-chair conformation [Q = 0.446 (3) Å, θ = 54.6 (4)° and ϕ = 9.5 (4)°]. Ring D adopts a 13β-envelope conformation [Q = 0.463 (2) Å and ϕ = 188.2 (3)°].
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The title steroid, C(31)H(53)NO(4), was prepared from the corresponding 5α,6α-epoxy-cholestane. The conformation of the six-membered rings is close to a chair form, while the five-membered ring adopts a twist conformation. The hydroxyl and acetamide groups are in axial positions. The nucleophilic species bound to the steroid nucleus at position 6 by the β-face, whereas the hydroxyl group at pos...
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The title steroid, C(23)H(35)ClO(4), is a pregnane derivative prepared by ring opening of the corresponding 5α,6α-ep-oxy steroid with BiCl(3). There are two symmetry-independent mol-ecules in the asymmetric unit that show no significant differences concerning bond lengths and angles. The conformation of the six-membered rings in both mol-ecules is close to a chair form, while the five-membered ...
متن کاملMethyl 2-{[2,8-bis(trifluoromethyl)quinolin-4-yl]oxy}acetate
In the crystal structure of the title compound, C(14)H(9)F(6)NO(3), mol-ecules are connected by inter-molecular C-H⋯O hydrogen bonds. The best planes through the benzene and pyridyl rings make a dihedral angle of 1.59 (12)°.
متن کامل4′-Formylbiphenyl-4-yl acetate
In the title compound, C(15)H(12)O(3), the dihedral angle between the six-membered rings is 30.39 (1)°. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812008665