racemic (2'R,3R,4'S)-6-chloro-4'-(3-chlorophenyl)-2'-[5-iodo-2-(4-piperidinyloxy)-phenyl]spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione 、
乙酰氯 在
三乙胺 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
生成
(2'R,3R,4'S)-2'-[2-(1-acetyl-4-piperidinyloxy)-5-iodo-phenyl]-6-chloro-4'-(3-chlorophenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione 、
(2'S,3S,4'R)-2'-[2-(1-acetyl-4-piperidinyloxy)-5-iodo-phenyl]-6-chloro-4'-(3-chlorophenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione