(7R,8S)-8-(tert-Butyl-dimethyl-silanyloxy)-4-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-7-[(S)-1-(9H-fluoren-9-ylmethoxycarbonyl)-2-methyl-propylamino]-7,8-dihydro-quinoline-2-carboxylic acid 、 2-trimethylsilylethyl 2-[(2S,3R)-2-[2-[(1S,2R)-2-hydroxy-1-[(2-methylpropan-2-yl)oxycarbonylamino]propyl]-1,3-thiazol-4-yl]-3-[[(2S)-2-[2-(4-phenylphenyl)propan-2-yloxycarbonylamino]propanoyl]amino]-3-[4-(2-trimethylsilylethoxycarbonyl)-1,3-thiazol-2-yl]-4,5-dihydro-2H-pyridin-6-yl]-1,3-thiazole-4-carboxylate 在
4-二甲氨基吡啶 、 2-chloro-1,3-dimethylimidazolidium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 0.17h,
以67%的产率得到(2S)-N-[(2R,3R)-2-[2-[(1S,2R)-2-[(7R,8S)-8-[tert-butyl(dimethyl)silyl]oxy-4-[(1S)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-7-[[(2S)-1-(9H-fluoren-9-ylmethoxy)-3-methyl-1-oxobutan-2-yl]amino]-7,8-dihydroquinoline-2-carbonyl]oxy-1-[[hydroxy-[(2-methylpropan-2-yl)oxy]methylidene]amino]propyl]-1,3-thiazol-4-yl]-3,6-bis[4-(2-trimethylsilylethoxycarbonyl)-1,3-thiazol-2-yl]-4,5-dihydro-2H-pyridin-3-yl]-2-[[hydroxy-[2-(4-phenylphenyl)propan-2-yloxy]methylidene]amino]propanimidic acid