A commercially viable process for industrial preparation of [(S)-n-tert butoxycarbonyl-3-hydroxy]adamantylglycine which is a key intermediate for saxagliptin synthesis and is represented by compound of Formula-VI. The compound-VI obtained by the process of present invention has more than 99.5% HPLC purity, not more than 0.15 % of dihydroxy impurity, not more than 0.05% of isomer impurity and not more than 0.1% of any unknown impurity. Formula (VI).
一种工业制备[(S)-n-叔丁氧羰基-3-羟基]
金刚烷基甘
氨酸的商业可行过程,该物质是撒格列普汀合成的关键中间体,代表化合物的结构式为VI。本发明的工艺获得的化合物VI具有超过99.5%的HPLC纯度,不超过0.15%的二羟基杂质,不超过0.05%的异构体杂质和不超过0.1%的任何未知杂质。结构式(VI)。