、 methyl 2-(4-((tert-butoxycarbonyl)oxy)-3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)acrylate 在
C
59H
79N
3O
3Si 作用下,
以
氯仿 为溶剂,
以95%的产率得到1'-(tert-butyl) 4'-methyl (3R,3'R)-3''-methyl-2,5''-dioxo-1-(2-oxo-2-phenyl-1l2-ethyl)-1''-phenyl-1'',5''-dihydro-1'H-dispiro[indoline-3,2'-pyrrole-3',4''-pyrazole]-1',4'-dicarboxylate