Synthesis of the Glycopeptidolipid of <i>Mycobacterium </i><i>a</i><i>vium </i>Serovar 4: First Example of a Fully Synthetic C-Mycoside GPL
作者:Thorsten Heidelberg、Olivier R. Martin
DOI:10.1021/jo030304e
日期:2004.4.1
4, namely 3,4-di-O-Me-α-l-Rhap-(1→1)R-C21H43CH(OH)CH2CO-d-Phe-[4-O-Me-α-l-Rhap-(1→4)-2-O-Me-α-l-Fucp-(1→3)-α-l-Rhap-(1→2)-6-deoxy-α-l-Talp-(1→3)]-d-allo-Thr-d-Ala-l-Alaol} (1), is described. The synthesis was based on the disconnection of the final structure into four building blocks, an l-rhamnosyl pseudodipeptide, a 6-deoxy-l-talosyl dipeptide, a trisaccharide donor, and a 3-hydroxyalkanoic acid
glycopeptidolipid(GPL)存在于细胞壁中的制备鸟分枝杆菌血清型4,即3,4-二- ö -Me-α-升-RHA p - (1→1) - [R -C 21 ħ 43 CH (OH)CH 2 CO- d -Phe- [4- O -Me-α- l - Rha p-(1→4)-2- O -Me-α- l - Fuc p-(1→3)- α- 1- Rha p-(1→2)-6-脱氧-α- 1 - Tal p-(1→3)]- d -allo-Thr- d -Ala - 1描述了-Alaol}(1)。合成基于将最终结构断开成四个结构单元,即1-鼠李糖基假二肽,6-脱氧-1-戊糖基二肽,三糖供体和3-羟基链烷酸。的关键步骤是三糖供体之间的糖苷键,作为戊烯基糖苷的创建,和6-脱氧升适当的-talose单元d -Phe- ø - (6-脱氧升-talosyl) - d-allo-Thr衍生物和