在
sodium acetate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.75h,
以69%的产率得到[(2S,4aS,5S,6R,8aS)-6-[(2R,3S,3aR,5'R,6aS)-4-[(3,5-dioxo-4-phenyl-1,2,4-triazolidin-1-yl)methyl]-3,5'-dimethylspiro[3,3a,6,6a-tetrahydrocyclopenta[b]furan-2,2'-oxane]-5-yl]-4a-methyl-5-(2-oxoethyl)-2,3,4,5,6,7,8,8a-octahydro-1H-naphthalen-2-yl] acetate