Methanesulfonic acid (3R,4R)-4-[(S)-((2R,3R)-2-benzo[1,3]dioxol-5-yl-7-methoxy-3-methoxymethyl-2,3-dihydro-benzo[1,4]dioxin-6-yl)-(tert-butyl-dimethyl-silanyloxy)-methyl]-2-oxo-tetrahydro-furan-3-ylmethyl ester 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
苯 为溶剂,
反应 0.5h,
以0.362 g的产率得到(4R,1'S,2"R,3"R)-4-[1'-[(t-butyldimethylsilyl)oxy]-1'-[7"-methoxy-3"-methoxymethyl-2"-(3''',4'''-methylenedioxyphenyl)-2",3"-dihydro-1",4"-benzodioxin-6"-yl]methyl]-3-methylenedihydro-2(3H)-furanone