4-ethynyl-6-methoxy-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxole 、
(3S,4S)-3,4-bis(benzyloxy)-3,4-dihydro-2H-pyrrole 1-oxide 在
copper(l) iodide 作用下,
以
乙腈 为溶剂,
反应 5.25h,
以83%的产率得到(3S,4S)-3,4-bis(benzyloxy)-6-[(3aS,4S,6R,6aS)-tetrahydro-4-methoxy-2,2-dimethylfuro[3,4-d][1,3]dioxol-6-yl]-1-azabicyclo-[3.2.0]heptan-7-one