反应详情

A mixture of (2S,3S)-3-(2-aminophenylthio)-2-hydroxy-3-(4-methoxyphenyl)propionamide (159 mg) and xylene (3 ml) is refluxed for 29 hours. After allowed to cool to room temperature, the mixture is stirred to crystallization. The precipitated crystals are collected by filtration, washed with xylene, and dried at 60° C. to give (2S,3S)-2,3-dihydro-3-hydroxy-2-(4-methoxyphenyl)-1,5-benzothiazepin-4(5H)-one (1 15 mg).

1. temperatureis refluxed for 29 hours
2. filtrationThe precipitated crystals are collected by filtration
3. washwashed with xylene
4. customdried at 60° C.