1-苄氧基-3,5-二羟基苯 、
Toluene-4-sulfonic acid (4R,5R)-5-{3,5-bis-[(4S,5S)-5-(4-tert-butyl-phenoxymethyl)-2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy]-phenoxymethyl}-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester 在
caesium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以55%的产率得到(4R,5R)-4-[[3,5-bis[[(4S,5S)-5-[(4-tert-butylphenoxy)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy]phenoxy]methyl]-5-[[3-[[(4R,5R)-5-[[3,5-bis[[(4S,5S)-5-[(4-tert-butylphenoxy)methyl]-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy]phenoxy]methyl]-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy]-5-phenylmethoxyphenoxy]methyl]-2,2-dimethyl-1,3-dioxolane