The present invention related to stable N-((1R, 2R)-1-(2,3-dihydrobenzo[b][1,4] dioxin-6-yl)- 1-hydroxy-3- (pyrrolidin-1-yl)propan-2-yl) octanamide (2R,3R)- 2,3-dihydroxysuccinate premix of formula (Ia) and its process for preparation thereof. The present invention also related to process for the preparation of N-((1R, 2R)-1-(2,3-dihydrobenzo[b][1,4] dioxin-6- yl)-1-hydroxy-3- (pyrrolidin-1-yl) propan-2-yl) octanamide of formula (I) and pharmaceutically acceptable salts.
本发明涉及稳定的N-((1R,2R)-1-(2,3-二氢苯并[b][1,4]
二噁烷-6-基)-1-羟基-3-(
吡咯烷-1-基)丙基)辛酰胺(2R,3R)-2,3-
二羟基琥珀酸盐预混物的制备方法。本发明还涉及N-((1R,2R)-1-(2,3-二氢苯并[b][1,4]
二噁烷-6-基)-1-羟基-3-(
吡咯烷-1-基)丙基)辛酰胺的制备方法(I)及其药用可接受的盐。