(2R,3R,5R)-5-[(3R,6S)-6-(benzyloxy)-3-isopropylcyclohex-1-enyl]-2-(4-diazo-3-oxo-butyl)-3-methyltetrahydrofuran-3-yl acetate 在
copper(II) hexafluoroacetylacetonate 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以76%的产率得到(1R,2R,3R,6S,10R,11R)-6-benzyloxy-3-isopropyl-10-methyl-14-oxo-15-oxatricyclo[9.3.1.0(2,7)]-pentadec-7-en-10-yl acetate