首页> 外文期刊>Russian Journal of General Chemistry >Crystal and Molecular Structure of (4'R,5'R,22R)-22-Hydroxy-22-(3',4'-dimethylisoxazolin-5'-yl)-6beta-methoxy-3alpha,5-cyclo-23,24-dinorcholane
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Crystal and Molecular Structure of (4'R,5'R,22R)-22-Hydroxy-22-(3',4'-dimethylisoxazolin-5'-yl)-6beta-methoxy-3alpha,5-cyclo-23,24-dinorcholane

机译:(4'R,5'R,22R)-22-羟基-22-(3',4'-二甲基异恶唑啉-5'-基)-6beta-甲氧基-3alpha,5-cyclo-23的晶体和分子结构, 24-二氯胆烷

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摘要

The crystal and molecular structure of (4'R,5'R,22R)-22-hydroxy-22-(3',4'-dimethylisoxazolin-5'-yl)-6beta-methoxy-3alpha,5-cyclo-23,24-dinorcholane was studied by single crystal X-ray diffraction.The compound crystallizes in the monoclinic system,space group C2;a 19.649(7),b 7.680(2),c 17.254(6) A;beta 101.05(3) deg .The only diastereomer formed by the 1,3-dipolar cycloaddition of acetonitriole oxide has the A'R,5'R stereochemistry of the arising chiral centers.The conformation of the side chain of the molecule is additionally stabilized by an intramolecular hydrogen bond.
机译:(4'R,5'R,22R)-22-羟基-22-(3',4'-二甲基异恶唑啉-5'-基)-6beta-甲氧基-3alpha,5-cyclo-23的晶体和分子结构通过单晶X射线衍射研究了24-二氯胆烷。该化合物在单斜晶系空间群C2中结晶; a 19.649(7),b 7.680(2),c 17.254(6)A; beta 101.05(3)仅由乙腈三元醇的1,3-偶极环加成反应形成的非对映异构体具有手性中心的A'R,5'R立体化学。分子侧链的构象还通过分子内氢键稳定。

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