万古霉素 、
N,N'-羰基二咪唑 在
N,N-二异丙基乙胺 作用下,
以
二甲基亚砜 为溶剂,
以33%的产率得到(1S,2R,18R,19R,22S,25R,28R,40S)-48-[(2S,3R,4S,5S,6R)-3-[[(3aS,4S,6S,7aS)-4,7a-dimethyl-2-oxo-3a,4,6,7-tetrahydro-1H-pyrano[4,3-d][1,3]oxazol-6-yl]oxy]-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-22-(2-amino-2-oxoethyl)-5,15-dichloro-2,18,32,35,37-pentahydroxy-19-[[(2R)-4-methyl-2-(methylamino)pentanoyl]amino]-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-pentadecaene-40-carboxylic acid