4-Formylazetidin-2-one as a Useful Building Block for the Formal Synthesis of <i>xylo</i>-(2<i>S</i>,3<i>R</i>,4<i>R</i>)-Phytosphingosine and <i>threo</i>-(2<i>S</i>,3<i>S</i>)-Sphingosine
作者:Abdul Deshmukh、Ajaykumar Kale、Prathmesh Sakle、Vikas Gumaste
DOI:10.1055/s-2007-983815
日期:2007.9
Stereoselective formal synthesis of xylo-(2S,3R,4R)-phytosphingosine and threo-(2S,3S)-sphingosine is described starting from an enantiopure formyl-substituted β-lactam. Grignard reaction of the N-Boc-protected-β-lactam carbonyl group, followed by further transformations, provides a common intermediate for xylo-(2S,3R,4R)-phytosphingosine and threo-(2S,3S)-sphingosine.
木-(2S,3R,4R)-植物鞘氨醇和苏-(2S,3S)-鞘氨醇的立体选择性正式合成是从对映纯甲酰基取代的β-内酰胺开始描述的。 N-Boc-保护-β-内酰胺羰基的格氏反应,然后进一步转化,提供了木-(2S,3R,4R)-植物鞘氨醇和苏-(2S,3S)-鞘氨醇的常见中间体。