ethyl 2-(1-{2-[8-chloro-6-(2,3-dihydro-1,4-benzodioxin-5-yl)-4H,6H-pyrrolo[1,2-a][4,1]benzoxazepin-4-yl]acetyl}-4-piperidinyl)acetate 以
isopropyl alcohol-hexane 为溶剂,
以to give ethyl 2-(1-{2-[(4R,6S)-8-chloro-6-(2,3-dihydro-1,4-benzodioxin-5-yl)-4H,6H-pyrrolo[1,2-a][4,1]benzoxazepin-4-yl]acetyl}-4-piperidinyl)acetate (32 mg) corresponding to a peak with a retention time of 29.7 minutes and ethyl 2-(1-{2-[(4S,6R)-8-chloro-6-(2,3-dihydro-1,4-benzodioxin-5-yl)-4H,6H-pyrrolo[1,2-a][4,1]benzoxazepin-4-yl]acetyl}-4-piperidinyl)acetate (32 mg) corresponding to a peak with a retention time of 15.3 minutes的产率得到ethyl 2-(1-{2-[(4R,6S)-8-chloro-6-(2,3-dihydro-1,4-benzodioxin-5-yl)-4H,6H-pyrrolo[1,2-a][4,1]benzoxazepin-4-yl]acetyl}-4-piperidinyl)acetate