Resolution of (.+-.)-2-tetradecyloxiranecarboxylic acid. Absolute configuration and chiral synthesis of the hypoglycemic R enantiomer and biological activity of enantiomers
作者:Winston Ho、Okan Tarhan、Timothy C. Kiorpes、Gene F. Tutwiler、Richard J. Mohrbacher
DOI:10.1021/jm00389a020
日期:1987.6
The resolution of the hypoglycemic agent (+/-)-2-tetradecyloxiranecarboxylic acid (3) as its d- and l-ephedrine salts is presented. The active enantiomer (R)-(+)-3 was also synthesized by the Sharpless chiral epoxidation procedure and its methyl ester (R)-(+)-4 was shown to be identical with the corresponding ester from the resolved acid. Single-crystal X-ray structure analysis of the diastereomeric
介绍了降血糖药(+/-)-2-十四烷基环氧乙烷羧酸(3)的D-和L-麻黄碱盐的拆分结果。活性对映体(R)-(+)-3也通过Sharpless手性环氧化方法合成,并且其甲酯(R)-(+)-4与来自拆分酸的相应酯相同。(+)-3和(-)-麻黄碱的非对映体盐的单晶X射线结构分析允许将(+)-3指定为R构型。给出了外消旋和对映异构形式3、4和CoA酯3对脂肪酸氧化和葡萄糖耐性的影响。提出了一种假定的作用机理,该活性对映体是一种对映选择性,活性定点,不可逆的肉碱棕榈酰转移酶抑制剂。