作者:Youfeng Nai、Jiaxi Xu
DOI:10.1002/hlca.201200547
日期:2013.7
Various substituted homotaurines (=3‐aminopropane‐1‐sulfonic acids) 6 were readily synthesized in satisfactory to good yields via the Michael addition of thioacetic acid to alk‐2‐enamides 3 (→4), followed by LiAlH4 reduction (→5) and performic acid oxidation (Scheme 1). The configuration of ‘anti’‐disubstituted homotaurine ‘anti’‐6h was deduced from the 3‐(acetylthio)alkanamide (=S‐(3‐amino‐1,2‐dimethyl‐3‐oxopropyl)
通过将硫代乙酸迈克尔加成至alk-2-enamides 3(→ 4),然后还原LiAlH 4(→ 5),可以容易地以令人满意的令人满意的产率合成各种取代的高牛磺酸(= 3-氨基丙烷-1-磺酸)6)和过甲酸氧化(方案1)。“的结构的抗”二取代的高牛磺酸“反‘ - 6H从3-(乙酰硫基)链烷酰胺(=推导S- (3-氨基-1,2-二甲基-3-氧代丙基)硫代乙酸酯)’抗- ” 4H形成于迈克尔此外,经鉴定通过所述Karplus组方程分析,并利用X射线衍射分析证实。当前路线是合成多样取代homotaurines,包括1-,2-,和一种有效的方法Ñ单取代的,以及1,2-,1,Ñ - ,2,Ñ - ,和Ñ,Ñ二取代homotaurines (表)。