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首页> 外文期刊>Crystal growth & design >Enantioresolution and Chameleonic Mimicry of 2-Butanol with an Adamantylacetyl Derivative of Cholic Acid
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Enantioresolution and Chameleonic Mimicry of 2-Butanol with an Adamantylacetyl Derivative of Cholic Acid

机译:对苯二酸和金刚烷乙酰基衍生物的丁醇的对映拆分和苯甲酰模拟。

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摘要

[3 beta,5 beta,7 alpha,12 alpha]-3[(Adamantyl-1-acetyl)-amino]-7-12-dihydroxycholan-24-oic acid (AdCH(2)CA) was synthesized by the reaction between 1-adamantyl acetyl chloride and the methyl ester of 3 beta-amino-cholic acid and hydrolysis of the ester. The acid wits recrystallized from racemic 2-butanol (0.1 % water). Crystals are orthorhombic (P2(1)2(1)2(1)) and form inclusion complexes with water and 2-butanol with a 1:1:1 stoichiometry. Only the S-enantiomer is included into the structure of the crystal, exhibiting a chameleonic mimicry with the steroid bilayers. The isolation of crystals allows the enantioresolution of the racemate with a high purity (approximate to 99%) of S-2-butanol. The steroid molecules are disposed in an antiparallel orientation in the hydrophobic layer and it parallel orientation in the hydrophilic one.
机译:[3 beta,5 beta,7 alpha,12 alpha] -3 [(金刚烷基-1-乙酰基)-氨基] -7-12-二羟基胆烷-24-oic酸(AdCH(2)CA)是通过1-金刚烷基乙酰氯和3-β-氨基-胆酸的甲酯与该酯的水解。该酸从外消旋的2-丁醇(0.1%水)中重结晶。晶体是正交晶体(P2(1)2(1)2(1)),并与水和2-丁醇以1:1:1的化学计量比形成包合物。晶体结构中仅包含S对映异构体,显示出类固醇双层的Chaleleonic模仿。晶体的分离使得外消旋物具有高纯度(约99%)的S-2-丁醇对映体拆分。类固醇分子在疏水层中呈反平行取向,而在亲水层中呈平行取向。

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