tert-butyl N-[(2R)-1-[[(1S,2R,18R,19R,22S,25R,28R,40S)-48-amino-22-[2-[bis(4-methoxyphenyl)methylamino]-2-oxoethyl]-2,18-bis[[tert-butyl(dimethyl)silyl]oxy]-5,15-dichloro-40-(hydroxymethyl)-32,35,37-trimethoxy-20,23,26,42,44-pentaoxo-7,13-dioxa-21,24,27,41,43-pentazaoctacyclo[26.14.2.23,6.214,17.18,12.129,33.010,25.034,39]pentaconta-3,5,8(48),9,11,14,16,29(45),30,32,34(39),35,37,46,49-pentadecaen-19-yl]amino]-4-methyl-1-oxopentan-2-yl]-N-methylcarbamate 在
tetrafluoroboric acid 、
亚硝酸异戊酯 、
水 、 potassium iodide 作用下,
以
乙腈 为溶剂,
反应 2.5h,
生成 tert-butyl N-[(2R)-1-[[(1S,2R,18R,19R,22S,25R,28R,40S)-22-[2-[bis(4-methoxyphenyl)methylamino]-2-oxoethyl]-2,18-bis[[tert-butyl(dimethyl)silyl]oxy]-5,15-dichloro-40-(hydroxymethyl)-32,35,37-trimethoxy-20,23,26,42,44-pentaoxo-7,13-dioxa-21,24,27,41,43-pentazaoctacyclo[26.14.2.23,6.214,17.18,12.129,33.010,25.034,39]pentaconta-3,5,8(48),9,11,14,16,29(45),30,32,34(39),35,37,46,49-pentadecaen-19-yl]amino]-4-methyl-1-oxopentan-2-yl]-N-methylcarbamate 、 tert-butyl N-[(2R)-1-[[(1S,2R,18R,19R,22S,25R,28R,40S)-22-[2-[bis(4-methoxyphenyl)methylamino]-2-oxoethyl]-2,18-bis[[tert-butyl(dimethyl)silyl]oxy]-5,15-dichloro-40-(hydroxymethyl)-48-iodo-32,35,37-trimethoxy-20,23,26,42,44-pentaoxo-7,13-dioxa-21,24,27,41,43-pentazaoctacyclo[26.14.2.23,6.214,17.18,12.129,33.010,25.034,39]pentaconta-3,5,8(48),9,11,14,16,29(45),30,32,34(39),35,37,46,49-pentadecaen-19-yl]amino]-4-methyl-1-oxopentan-2-yl]-N-methylcarbamate