Enzymatic resolution of trans-2-arylcyclohexan-1-ols using crude chicken liver esterase (CCLE) as biocatalyst
摘要:
Homochiral trans-2-arylcyclohexan-1-ols were synthesized via crude chicken liver esterase (CCLE) mediated enantioselective hydrolysis of the corresponding racemic acetates.
A new method involving efficient, widely applicable, and highly selective alpha-chlorination of simple silyl enolate with Lewis acid and an alpha,alpha-dichloro-1,3-dicarbonyl controller unit was reported. Diastereoselectivity and enantioselectivity of the reaction were investigated. High reactivity and selectivity were achieved by using alpha,alpha-dichlorinated malonic ester.
Preparation of enantiomerically pure trans- and cis-2-(1-naphthyl)cyclohexan-1-ols
作者:Michiyasu Takahashi、Kunio Ogasawara
DOI:10.1016/0957-4166(95)00206-5
日期:1995.7
Lipase-mediated treatment of racemic trans-2-(1-naphthyl)cyclohexan-1-ol with vinyl acetate allows clear-cut enantiospecific kinetic acetylation to give (+)-(1R,2S)-acetate in excellent chemical and enantiomeric excesses leaving (+)-(1S,2R)-alcohol in an excellent enantiomeric purity and excellent recovery. The enantiomerically pure alcohol obtained is transformed into the diastereomeric alcohol neatly via the Mitsunobu inversion reaction.
Basavaiah, Deevi; Krishna, Peddinti Rama, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1993, vol. 32, # 1, p. 131 - 134