Synthesis of isomeric 5α-androstane-3,15,17β-triols
نویسندگان
چکیده
منابع مشابه
Redetermination of 5α-androstane-3,17-dione
The structure of the title compound, C(19)H(28)O(2), has been redermined at 295 (2) K, with much improved precision. The structure and mol-ecular packing of the title compound was first reported by Coiro et al. [Acta Cryst. (1973). B29, 1404-1409] by means of potential-energy calculations. The cell parameters in this study differ considerably in space group C2. It is a derivative of testosteron...
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The title compound, C(24)H(41)NO, is a new derivative of the anti-HIV steroid 17β-(N-tert-butyl-amino-carbon-yl)androst-4-en-3-one. There are four rings in the structure and these are trans-fused. The three six-membered rings exhibit chair conformations, while the five-membered ring adopts an envelope conformation.
متن کاملAndrostane-3β,5α,6β,17β-tetrol trihydrate
The title hydrated tetrol, C(19)H(32)O(4)·3H(2)O, was synthesized by stereoselective reduction of the compound 3β,5α,6β-trihy-droxy-androstan-17-one. All rings are fused trans. The organic mol-ecules are connected head-to-tail along the c axis via O-H⋯O hydrogen bonds. Layers of water mol-ecules in the ab plane inter-connect these chains. A quantum chemical ab initio Roothan Hartree-Fock calcul...
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N-methyl-N-nitrosourea (MNU) induces estrogen-dependent mammary tumors in female Lewis rats. We explored the antineoplastic activity of a synthetic androstane derivative, 17α-ethynyl-5α-androstane-3α, 17β-diol (HE3235), as a single agent or in combination with docetaxel compared to tamoxifen, anastrazole, and docetaxel monotherapies against MNU-induced mammary tumors in female Lewis rats. Treat...
متن کاملSynthesis of 5α-androstane-17-spiro-δ-lactones with a 3-keto, 3-hydroxy, 3-spirocarbamate or 3-spiromorpholinone as inhibitors of 17β-hydroxysteroid dehydrogenases.
We synthesized two series of androstane derivatives as inhibitors of type 3 and type 5 17β-hydroxysteroid dehydrogenases (17β-HSDs). In the first series, four monospiro derivatives at position C17 were prepared from androsterone (ADT) or epi-ADT. After the protection of the alcohol at C3, the C17-ketone was alkylated with the lithium acetylide of tetrahydro-2-(but-3-ynyl)-2-H-pyran, the triple ...
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ژورنال
عنوان ژورنال: J. Chem. Soc., Perkin Trans. 1
سال: 1976
ISSN: 0300-922X,1364-5463
DOI: 10.1039/p19760001429