浙江化工
浙江化工
절강화공
ZHEJIANG CHEMICAL INDUSTRY
2012年
2期
9-11,17
,共4页
(+)-邻氯苯甘氨酸%光学拆分%噻吩乙醇%氯吡格雷
(+)-鄰氯苯甘氨痠%光學拆分%噻吩乙醇%氯吡格雷
(+)-린록분감안산%광학탁분%새분을순%록필격뢰
(+)-2-chlorophenylglycine%chiral resolution%2-thiophene-ethanol%clopidogrel
以消旋的邻氯苯甘氨酸为原料,经酯化、光学拆分得到(+)-邻氯苯甘氨酸甲酯,与对甲苯磺酸-2-噻吩乙酯缩合制得氯吡格雷关键中间体(S)-2-(2-噻吩乙胺基)-(2-氯苯基)乙酸甲酯,然后在无水甲酸和多聚甲醛中环合反应得到硫酸氢氯吡格雷。该合成方法具有原料价廉易得、反应条件温和、收率较高,产品质量好的特点,适合于工业化。
以消鏇的鄰氯苯甘氨痠為原料,經酯化、光學拆分得到(+)-鄰氯苯甘氨痠甲酯,與對甲苯磺痠-2-噻吩乙酯縮閤製得氯吡格雷關鍵中間體(S)-2-(2-噻吩乙胺基)-(2-氯苯基)乙痠甲酯,然後在無水甲痠和多聚甲醛中環閤反應得到硫痠氫氯吡格雷。該閤成方法具有原料價廉易得、反應條件溫和、收率較高,產品質量好的特點,適閤于工業化。
이소선적린록분감안산위원료,경지화、광학탁분득도(+)-린록분감안산갑지,여대갑분광산-2-새분을지축합제득록필격뢰관건중간체(S)-2-(2-새분을알기)-(2-록분기)을산갑지,연후재무수갑산화다취갑철중배합반응득도류산경록필격뢰。해합성방법구유원료개렴역득、반응조건온화、수솔교고,산품질량호적특점,괄합우공업화。
(S)-methyl 2-amino-2-(2-chlorophenyl)acetate is obtained from racemic 2-amino-2-(2- chlorophenyl) acetic acid through esterification and optical resolution, which was subjected to condensation reaction with 2-(thiophen-2-yl)ethyl 4-methyl benzene sulfonate to afford the critical intermediate (S)-methyl 2- (2-chlorophenyl)-2-(2-(thiophen-2-yl)ethylamino) acetate. The cyclization of (S)-methyl 2-(2"ehlorophenyl)-2- (2-(thiophen-2-yl)ethylamino) acetate with paraformaldehyde in the presence of anhydrous formic acid provided the Clopidogrel bisulfate. For this synthesis pathway, there are .some advantages such as readily available starting material, moderate condition, high yield and good quality. This process is suitable for industrialization.