(S)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-succinic acid 4-{2-[2-(5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-5-methylsulfanyl-[1,3]dithiol-4-ylsulfanyl]-ethyl} ester 在
benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 、
三氟乙酸 作用下,
以
二氯甲烷 、
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
生成 (2S)-4-[2-[[2-(5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-5-methylsulfanyl-1,3-dithiol-4-yl]sulfanyl]ethoxy]-2-[[(2S)-4-[2-[[2-(5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-5-methylsulfanyl-1,3-dithiol-4-yl]sulfanyl]ethoxy]-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-oxobutanoyl]amino]-4-oxobutanoic acid