(3R,3aR,3bS,4R,6aR,6bR)-3,4-Dihydroxy-2-oxo-3,3a,3b,4,6a,6b-hexahydro-2H-1-oxa-cyclobutadicyclopentene-4-carboxylic acid methyl ester 在
ammonium hydroxide 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以68%的产率得到(1R,1aR,3aR,6R,6aS,6bS)-1,3a-Dihydroxy-4-oxo-1a,3a,4,6,6a,6b-hexahydro-1H-5-oxa-cyclobuta[cd]indene-6-carboxylic acid amide