tert-butyl 4-(3-(2-methoxy-2-oxoethyl)-3-methyl-2-oxoindolin-1-yl)piperidine-1-carboxylate 、
6b,7a-dihydroacenaphtho [1,2-b]oxirene 、
水 在
二氯甲烷 、 Brine 、
Sodium sulfate-III 、
2-(1-(1-(2-hydroxy-1,2-dihydroacenaphthylen-1-yl)piperidin4-yl)-3-methyl-2-oxoindolin-3-yl)acetic acid 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以to provide 2-(1-(1-(2-hydroxy-1,2-dihydroacenaphthylen-1-yl)piperidin-4-yl)-3-methyl-2-oxoindolin-3-yl)acetic acid (Compound 31-5, 670 mg, 77%) as a yellow solid的产率得到2-(1-(1-(2-hydroxy-1,2-dihydroacenaphthylen-1-yl)piperidin4-yl)-3-methyl-2-oxoindolin-3-yl)acetic acid