杂氮双环磷酸酯 、 1-Cyclopropyl-6-fluoro-7-{4-[(2S,4S)-4-mercapto-1-(4-nitro-benzyloxycarbonyl)-pyrrolidine-2-carbonyl]-piperazin-1-yl}-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid 4-nitro-benzyl ester 在
N,N-二异丙基乙胺 作用下,
以
乙腈 为溶剂,
反应 1.75h,
以66%的产率得到(1R,5S,6S)-2-[(3S,5S)-1-(4-nitrobenzyloxycarbonyl)-5-[4-(3-(4-nitrobenzyloxycarbonyl)-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-quinolinyl)-1-piperazinyl]-carbonylpyrrolidin-3-ylthio]-6-[(R)-1-hydroxyethyl]-1-methylcarbapen-2-em-3-carboxylic acid ester