[(2S)-1-[(4R,6S)-6-[[(4S,6S)-6-[(2R)-4-[tert-butyl(dimethyl)silyl]oxy-2-(4-methoxybenzoyl)oxybutyl]-2,2-dimethyl-1,3-dioxan-4-yl]methyl]-2,2-dimethyl-1,3-dioxan-4-yl]-4-hydroxybutan-2-yl] 4-methoxybenzoate 在
potassium methanolate 、 Candida cylindracea lipase 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以79%的产率得到Acetic acid (S)-4-((4S,6S)-6-{(4S,6R)-6-[(R)-4-(tert-butyl-dimethyl-silanyloxy)-2-hydroxy-butyl]-2,2-dimethyl-[1,3]dioxan-4-ylmethyl}-2,2-dimethyl-[1,3]dioxan-4-yl)-3-hydroxy-butyl ester