Synthesis and Pseudomonas Lipase Inhibition Study of Stereoisomers of Decahydro-2-naphthyl-N-n-butylcarbamate
作者:Ming-Cheng Lin、Yu-Fang Shen、Gialih Lin
DOI:10.2174/092986611797200913
日期:2011.11.1
(2S,4aR,8aS)-Cis,cis-, (2R,4aS,8aR)-cis,cis-, rac-cis,cis-, and rac-trans,cis-decahydro-2-naphthyl-N-n-butylcarbamates are synthesized from condensation of (2S,4aR,8aS)-cis,cis-, (2R,4aS,8aR)-cis,cis-, rac-cis,cis-, and rac-trans,cisdecahydro- 2-naphthols, respectively, with n-butyl isocyanate in the presence of triethylamine in dichloromethane. Optically pure (2S,4aR,8aS)-(-)- and (2R,4aS,8aR)-(+)-cis,cis-decahydro-2-naphthols are resolved by the porcine pancreatic lipase- catalyzed acetylation of decahydro-2-naphthols with vinyl acetate in t-butyl methyl ether. Absolute configurations of (2S,4aR,8aS)-(-)- and (2R,4aS,8aR)-(+)- cis,cis-decahydro-2-naphthols are determined from the 19F NMR spectra of their Moshers ester derivatives. (2S,4aR,8aR)-Trans,cis- and (2R,4aS,8aS)-trans,cis-decahydro-2-naphthols cant be resolved from the porcine pancreatic lipase-catalyzed acetylation of decahydro-2-naphthols with vinyl acetate in t-butyl methyl ether. For the inhibitory potency of Pseudomonas lipase, (2S,4aR,8aS)-cis,cis-decahydro-2-naphthyl-N-n-butylcarbamate is 3.5 times more potent than (2R,4aS,8aR)-cis,cis-decahydro-2-naphthyl-N-n-butylcarbamate; racemic cis,cis-decahydro- 2-naphthyl-N-n-butylcarbamate is about the same with trans,cis-decahydro-2-naphthyl-N-n-butylcarbamate. These inhibitors also show similar effects on porcine pancreatic lipase.
(2S,4aR,8aS)-Cis,cis-、(2R,4aS,8aR)-cis,cis-、rac-cis,cis-和rac-trans,cis-十氢-2-萘基-N-正丁基氨基甲酸酯是分别由(2S,4aR,8aS)-顺式,顺式-,(2R,4aS,8aR)-顺式,顺式-,rac-顺式,顺式-和rac-反式,顺式十氢-2-萘酚缩合合成,在三乙胺存在下,在二氯甲烷中与异氰酸正丁酯反应。光学纯的 (2S,4aR,8aS)-(-)- 和 (2R,4aS,8aR)-(+)-cis,cis-decaHydro-2-naphthols 通过猪胰脂肪酶催化的 decaHydro-2 乙酰化来解析-萘酚与乙酸乙烯酯在叔丁基甲基醚中的反应。 (2S,4aR,8aS)-(-)-和(2R,4aS,8aR)-(+)-顺式,顺式十氢-2-萘酚的绝对构型由它们的Moshers酯衍生物的19F NMR谱确定。 (2S,4aR,8aR)-Trans,cis- 和 (2R,4aS,8aS)-trans,cis-deca Hydro-2-naphthols 不能从猪胰脂肪酶催化的十氢-2-萘酚与乙酸乙烯酯的乙酰化中分离出来在叔丁基甲基醚中。对于假单胞菌脂肪酶的抑制效力,(2S,4aR,8aS)-cis,cis-decaHydro-2-naphthyl-N-n-丁基氨基甲酸酯的抑制效力是 (2R,4aS,8aR)-cis,cis-decaHydro-2 的 3.5 倍-萘基-N-正丁基氨基甲酸酯;外消旋顺式,顺式十氢-2-萘基-N-正丁基氨基甲酸酯与反式,顺式-十氢-2-萘基-N-正丁基氨基甲酸酯大致相同。这些抑制剂对猪胰脂肪酶也显示出类似的作用。