2,2-di-tert-butyl-7-methoxy-5-methyl-11-oxo-8,9,10,11-tetrahydroanthra[1,9-de][1,3,2]dioxasiline-4-carbaldehyde 在
dirhodium tetraacetate triethylamine trihydrochloride 作用下,
以
乙醚 、
二氯甲烷 、
乙腈 为溶剂,
反应 8.0h,
生成 (2S,3R,4R,6S)-3-Acetyl-6-(((2S,2'R,3a'S,4'S,8'S,10'S,13a'S)-10'-((tert-butyldimethylsilyl)oxy)-2'-(dimethoxymethyl)-5',12'-dihydroxy-7'-methoxy-8'-((4-methoxybenzyl)oxy)-11'-oxo-3a',4',8',9',10',11'-hexahydro-2'H,13a'H-spiro[oxirane-2,1'-[2,4]epoxyfuro[3,2-b]naphtho[2,3-h]chromen]-13a'-yl)oxy)-3-hydroxy-2-methyltetrahydro-2H-pyran-4-yl acetate