1-tert-butyl 5-isopropyl 4-(2-allyl-5-nitrophenyl)-6-methyl-3-[2-diazo-2-[(methyloxy)carbonyl]-acetyl]-2-oxo-1,2,3,4-tetrahydro-1,5-pyrimidinedicarboxylate 在
Ph
2(OAc)4 作用下,
以
苯 为溶剂,
反应 4.0h,
以55%的产率得到4-isopropyl 15-methyl 2-tert-butyl 3-methyl-8-nitro-16-oxo-18-oxa-2,17-diazapentacyclo[13.2.1.0
1,13.0
5,17.0
6,11]octadeca-3,6,8,10-tetraene-2,4,15-tricarboxylate