1,1'-di-tert-butyl O'2,O2-((5,5-dioxidodibenzo[b,d]thiophene-3,7-diyl)bis(2-oxoethane-2,1-diyl)) (2S,2'S)-bis(pyrrolidine-1,2-dicarboxylate) 在
ammonium acetate 作用下,
以
xylene 为溶剂,
反应 3.5h,
生成
(S,S)-2-(5-(7-(2-(1-tert-butoxycarbonylpyrrolidin-2-yl)-3H-imidazol-4-yl)-5,5-dioxo-5H-5λ(6)-dibenzothiophen-3-yl)-1H-imidazol-2-yl)pyrrolidine-1-carboxylic acid tert-butyl ester