tert-butyl N-[(2S,3S)-1-[[(Z)-[(3S,4R,5R)-5-[2,4-dioxo-3-(phenylmethoxymethyl)pyrimidin-1-yl]-3,4-dihydroxyoxolan-2-ylidene]methyl]amino]-3-[methyl-[(2S)-2-(phenylmethoxycarbonylamino)propanoyl]amino]-1-oxobutan-2-yl]carbamate 、
硫代氯甲酸苯酯 在
4-二甲氨基吡啶 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以75%的产率得到tert-butyl ((5S,8S,9S,Z)-12-((3aS,6R,6aR)-6-(3-((benzyloxy)methyl)-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2-thioxodihydrofuro[3,4-d][1,3]dioxol-4(3aH)-ylidene)-5,7,8-trimethyl-3,6,10-trioxo-1-phenyl-2-oxa-4,7,11-triazadodecan-9-yl)carbamate