5-<(Acetyl)(tert-butoxycarbonyl)methylenamino>-4,5-dihydro-2,5-dimethyl-4-phenyl-3-furancarbonsaeure-tert-butylester 在
platinum(IV) oxide 氢气 作用下,
以
甲醇 为溶剂,
以75%的产率得到1-<1-(tert-Butoxycarbonyl)-2-hydroxy-1-propenyl>-2,5-dimethyl-4-phenyl-3-pyrrolcarbonsaeure-tert-butylester