2,5-二羟基苯甲醛 、
ethyl (E)-3-[(3aR,6aR)-spiro[3a,6a-dihydrofuro[2,3-d][1,3]dioxole-2,1'-cyclohexane]-5-yl]-2-methylprop-2-enoate 在
silver(l) oxide 作用下,
反应 168.0h,
以100%的产率得到ethyl (4a'S,5'S,7a'R,10a'R)-4a'-formyl-1',4'-dihydroxy-5'-methyl-4a',5',7a',10a'-tetrahydrospiro[cyclohexane-1,9'-naphtho[1',2':4,5]furo[2,3-d][1,3]dioxole]-5'-carboxylate