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(S)-α-羟基-α-环戊基苯乙酸乙酯的合成

Synthesis of Ethyl(S)-α-Hydroxy-α-cyclopentylphenylacetate
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摘要 α-羟基-α-环戊基苯乙酸乙酯是一种常用医药中间体,可用于合成抗胆碱药格隆溴铵(glycopyrrolatebromide)、盐酸苯环王酯(phencynonatehydrochloride)和α-羟基-α-环戊基苯乙酰胺等有研究表明这类药物的疗效与α-位手性叔羟基碳的立体构型有密切关系,例如外消旋的盐酸苯环千酯常常会引起口干等不良作用,而S-构型具有更好的治疗效果,不良反应更轻。本研究对(S')-α-羟基-α-环戊基苯乙酸乙酯(1)的制备进行了探讨。 Ethyl (S)-ct-hydroxy-α-cyclopentylphenylacetate was synthesized from ethyl phenylglyoxylate and cyclopentanone by asymmetric condensation in the presence of L-proline to give ethyl (S)-α-hydroxy-α-(2- oxocyclopentyl)phenylacetate, followed by reduction with an overall yield of about 59%.
出处 《中国医药工业杂志》 CAS CSCD 北大核心 2011年第12期892-893,共2页 Chinese Journal of Pharmaceuticals
关键词 苯乙酸乙酯 羟基 戊基 合成 立体构型 治疗效果 医药中间体 抗胆碱药 ethyl (S) -α-hydroxy-α-cyclopentylphenylacetate glycopyrrolate bromide phencynonate intermediate synthesis
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