作者:Karnati Reddy、Suthrapu Sashikanth、Veeramalla Raju、Sripathi Somaiah、Peddi Rao
DOI:10.1055/s-0032-1316852
日期:——
[(1S)-1-(4-methoxyphenyl)ethyl]amine hydrochloride as a chiral auxiliary. Addition of 2-chlorobenzaldehyde to a solution of sodium cyanide and [(1S)-1-(4-methoxyphenyl)ethyl]amine hydrochloride gave diastereoisomerically pure (2S)-(2-chlorophenyl)[(1S)-1-(4-methoxyphenyl)ethyl]amino}acetonitrile hydrochloride. Cleavage of the chiral auxiliary and concomitant hydrolysis of the nitrile group then
摘要 通过应用以[(1S)-1-(4-甲氧基苯基)乙基]胺盐酸盐为手性助剂的Strecker反应,开发了(S)-(+)-氯吡格雷硫酸氢盐的不对称合成。将2-氯苯甲醛加到氰化钠和[(1S)-1-(4-甲氧基苯基)乙基]胺盐酸盐的溶液中,得到非对映异构纯的(2S)-(2-氯苯基)[(1S)-1 -(4-甲氧基苯基)乙基]氨基}乙腈盐酸盐。然后裂解手性助剂并伴随水解腈基团,得到对映体纯的(2S)-2-(2-氯苯基)甘氨酸盐酸盐,其为(S)-(+)-氯吡格雷的关键中间体。 通过应用以[(1S)-1-(4-甲氧基苯基)乙基]胺盐酸盐为手性助剂的Strecker反应,开发了(S)-(+)-氯吡格雷硫酸氢盐的不对称合成。将2-氯苯甲醛加到氰化钠和[(1S)-1-(4-甲氧基苯基)乙基]胺盐酸盐的溶液中,得到非对映异构纯的(2S)-(2-氯苯基)[(1S)-1 -(4-甲氧基苯基)乙基]氨基}乙腈盐酸