[2-({(S)-(3,5-dichloro-4-methoxyphenyl)-[2-(3-hydroxyphenyl)acetylamino]acetyl}methylamino)-(3S)-3-(4-fluoro-3-nitrophenyl)propionylamino]-(R)-(4-methoxyphenyl)acetic acid methyl ester 在
18-冠醚-6 、
potassium hydrogencarbonate 作用下,
以
四氢呋喃 为溶剂,
反应 5.0h,
生成 methyl (2R)-2-[[(11S,14S)-11-(3,5-dichloro-4-methoxyphenyl)-13-methyl-18-nitro-9,12-dioxo-2-oxa-10,13-diazatricyclo[14.2.2.13,7]henicosa-1(18),3,5,7(21),16,19-hexaene-14-carbonyl]amino]-2-(4-methoxyphenyl)acetate 、 methyl (2R)-2-[[(11R,14S)-11-(3,5-dichloro-4-methoxyphenyl)-13-methyl-18-nitro-9,12-dioxo-2-oxa-10,13-diazatricyclo[14.2.2.13,7]henicosa-1(18),3,5,7(21),16,19-hexaene-14-carbonyl]amino]-2-(4-methoxyphenyl)acetate