重氮甲烷 、 (Z)-7-[(1R,2R,3R,5S)-5-Acetoxy-2-dimethoxymethyl-3-(tetrahydro-pyran-2-yloxy)-cyclopentyl]-hept-5-enoic acid methyl ester 以
乙醚 为溶剂,
以5.8 g的产率得到(Z)-7-[(1R,2R,3R,5S)-2-Dimethoxymethyl-5-hydroxy-3-(tetrahydro-pyran-2-yloxy)-cyclopentyl]-hept-5-enoic acid methyl ester