甲醇 、 tert-butyl (3aR,6aS)-5-(hydroxymethyl)-6a-[(2-methylpropan-2-yl)oxycarbonyloxymethyl]-2,6-dioxo-3,3a-dihydrocyclopenta[b]pyrrole-1-carboxylate 在
lithium hydroxide monohydrate 作用下,
反应 0.5h,
以323 mg的产率得到methyl 2-[(1R,5S)-3-(hydroxymethyl)-5-[(2-methylpropan-2-yl)oxycarbonylamino]-5-[(2-methylpropan-2-yl)oxycarbonyloxymethyl]-4-oxocyclopent-2-en-1-yl]acetate