溴乙酸甲酯 、
2-[12,18-Bis(2-methoxy-2-oxoethyl)-8-methyl-2,5,15,22-tetraoxa-12,18-diazatetracyclo[17.7.0.06,11.021,25]hexacosa-1(19),6(11),7,9,20,23,25-heptaen-23-yl]-1,3-oxazole-5-carboxylic acid 在
N,N-二异丙基乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 2.0h,
以42%的产率得到Acetyloxymethyl 2-[12,18-bis(2-methoxy-2-oxoethyl)-8-methyl-2,5,15,22-tetraoxa-12,18-diazatetracyclo[17.7.0.06,11.021,25]hexacosa-1(19),6(11),7,9,20,23,25-heptaen-23-yl]-1,3-oxazole-5-carboxylate