摘要
目的研究氯吡格雷的中间体(S)-(+)-(2-噻吩乙胺基)(2-氯苯基)乙酸甲酯的合成。方法以(S)-邻氯苯甘氨酸甲酯的酒石酸盐、噻吩乙醇对甲苯磺酸酯等为原料,经中和、亲核取代反应合成目标化合物,考察溶剂、缚酸剂、原料比对产率的影响。结果目标化合物经1H-NMR、13C-NMR确证化学结构,确定了最佳实验条件为原料比(氨基酸酯∶磺酸酯)为2∶1、溶剂为乙腈、缚酸剂为磷酸氢二钾,产率达到80%,纯度高达99%。结论本研究为(S)-(+)-2-噻吩乙胺基-2-氯苯基乙酸甲酯的工业化生产提供了较为合理的工艺路线,也为氯吡格雷生产提供了合格的原料。
Objective To study the synthesis of S - (+) - Methyl -α- (2-Thienylethylamino) (2-Chlorophenyl) Aeetate. Methods S - (+) - Methyl - α- (2-Thienylethylamino) (2-Chlorophenyl) Aectate was synthesised by using (+) - Tartrate of Methyl (+) - α- Amino (2-ehlorophenyl) Acetate and 2 - (2-Thienyl) Ethyl toluene - p - sulphonate as starting materials by neutralization reaction, nueleophilie substitution reaction and etc.. The effect of molar ratio of (+) - Tartrate of Methyl (+) - α- Amino (2-Chlorophenyl) Acetate to 2 - (2-Thienyl) Ethyl toluene - p - sulphonate, solvent and acid aeceptor on the yield of S - (+) - Methyl - α -(2-Thienylethylamino) (2-Chlorophenyl) Acetate were investigated. Results The chemical structure of the target compound was confirmed by IH-NMR, ^13C NMR. The yield of title compound was 80% and its HPLC purity was not less than 99% under the optimum reaction conditions of n [(+) - Tartrate of Methyl (+) -α - Amino (2-Chlorophenyl) Acetate)] : n [(2 - (2-Thienyl) Ethyl toluene - p - sulphonate)]=2:1, aeetonitrile for solvent and dipotassium hydrogen phosphate for acid aceeptor. Conclusion This article can provide a more reasonable route for the production process of S - (+) - Methyl - α - (2-Thienylethylamino) (2-Chlorophenyl) Aectate.
出处
《中国医药导报》
CAS
2012年第22期24-25,共2页
China Medical Herald
基金
广东省自然科学基金(项目编号:S2011010001556)
2009年广东省学科建设专项资金第三批资助项目(项目编号:2009400)
2010年广东省第三批科学事业费计划项目(项目编号:2010A030200038)
2011年广州市第五批科学技术经费项目(项目编号:2011J4100016)