Photorearrangements of Some Methyl-substituted Cholest-5-en-3β-ol Nitrites
نویسندگان
چکیده
منابع مشابه
Cholest-5-en-3β-yl N-phenylcarbamate
In the title compound, C(34)H(51)NO(2), the dihedral angle between the planes of the phenyl ring and the carbonyl group is 9.30 (2)°. No significant inter-molecular inter-actions are observed in the crystal structure. The C(5)H(11) fragment is disordered over two positions with site occupancies of 0.611 (6) and 0.389 (6).
متن کاملtrimethylchlorosilane; cholesterol, Cholest-5-en-3b-ol; oxysterols, cholesterol oxidation products; 7-ketocholesterol, cholest-5-en-3b-ol-7-one; cholestanetriol, cholestan-3b,5a,6b-triol; a-epoxycholesterol, cholestan-5a,6a-epoxy-3b-ol; 25-hydroxycholesterol, cholest-5-en-3b,25-diol; 7a-hydroxycholesterol, Cholest-5-en-3b,7a-diol; 7b- hydroxycholesterol, cholest-5-en-3b,7b-diol; b-epoxycholesterol, cholestan-5b,6b-epoxy-3b-ol; 27-hydroxycholesterol, 25R-cholest-5-en-
Abbreviations : HMDS, 1,1,1,3,3,3-hexamethyldisilazane; TMCS, trimethylchlorosilane; cholesterol, Cholest-5-en-3b-ol; oxysterols, cholesterol oxidation products; 7-ketocholesterol, cholest-5-en-3b-ol-7-one; cholestanetriol, cholestan-3b,5a,6b-triol; a-epoxycholesterol, cholestan-5a,6a-epoxy-3b-ol; 25-hydroxycholesterol, cholest-5-en-3b,25-diol; 7a-hydroxycholesterol, Cholest-5-en-3b,7a-diol; 7b...
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In the title compound, C(21)H(30)N(2)O, there are five fused rings. The A and C rings adopt chair conformations, ring B adopts an 8β,9α-half-chair conformation and ring D adopts a 14α-envelope conformation. The pyrazole ring is planar. Inter-molecular O-H⋯N hydrogen bonds [H⋯N = 1.88 (5) Å] help to stabilize the crystal structure. The absolute structure was deduced from those of the starting ma...
متن کاملCholest-5-en-7-one
In the deca-hydro-phenanthrenone ring system of the title compound, C(27)H(44)O, the two cyclo-hexane rings adopt chair conformations, whereas the cyclo-hexene ring adopts an envelope conformation. The cyclo-pentane ring is twisted. In the crystal structure, mol-ecules are stacked along the a axis, but no significant inter-molecular inter-actions are observed.
متن کاملCrystal structure of cholest-5-en-3β-yl 3-(2,4-dimethoxy-3-methylphenyl)prop-2-enoate
In the title compound, C39H58O4, the steroid rings A and C adopt a chair conformation, while ring B adopts a half-chair conformation, and ring D has an envelope conformation, with the methyl-substituted C atom as the flap. In the crystal, mol-ecules pack within layers parallel to (100), with their long axis parallel to the [101] direction. Adjacent layers are linked via C-H⋯O hydrogen bonds and...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1983
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.56.3349