[(1R,2R)-1-{(S)-2-Cyano-1-[(R)-1-(3,5-dihydroxy-4-methoxy-phenyl)-2-hydroxy-ethylcarbamoyl]-ethylcarbamoyl}-2-(4-fluoro-3-nitro-phenyl)-2-hydroxy-ethyl]-carbamic acid tert-butyl ester 在
cesium fluoride 作用下,
以
二甲基亚砜 为溶剂,
反应 24.0h,
生成 ((8R,11S,14R,15R)-11-Cyanomethyl-5,15-dihydroxy-8-hydroxymethyl-4-methoxy-19-nitro-10,13-dioxo-2-oxa-9,12-diaza-tricyclo[14.2.2.1
3,7]henicosa-1(19),3(21),4,6,16(20),17-hexaen-14-yl)-carbamic acid tert-butyl ester 、 ((8R,11S,14R,15R)-11-Cyanomethyl-5,15-dihydroxy-8-hydroxymethyl-4-methoxy-19-nitro-10,13-dioxo-2-oxa-9,12-diaza-tricyclo[14.2.2.1
3,7]henicosa-1(19),3(21),4,6,16(20),17-hexaen-14-yl)-carbamic acid tert-butyl ester