کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1389106 | 982843 | 2007 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of a deoxy analogue of ADP l-glycero-d-manno-heptose Synthesis of a deoxy analogue of ADP l-glycero-d-manno-heptose](/preview/png/1389106.png)
Starting from l-lyxose, indium-mediated chain elongation with allyl bromide followed by acetylation and oxidative cleavage of the double bond and deprotection afforded 2-deoxy-l-galacto-heptose as a 2-deoxy analogue of the bacterial carbohydrate l-glycero-d-manno-heptose in good overall yield. For the synthesis of the ADP-activated derivative, the 2-deoxy-heptose was O-acetylated and transformed into the anomeric bromide derivative, which was then converted into the acetylated heptopyranosyl phosphate by reaction with tetrabutylammonium phosphate. Deprotection and separation of the anomeric phosphates furnished 2-deoxy-β-l-galacto-heptopyranosyl phosphate. Coupling of the acetylated heptosyl phosphate with AMP morpholidate afforded the acetylated ADP derivative in good yield. Removal of the acetyl groups gave the target compound ADP 2-deoxy-l-galacto-heptopyranose, which may serve as substrate analogue of bacterial ADP heptosyl transferases for biochemical and crystallographic studies.
The chemical synthesis of ADP 2-deoxy-l-galacto-heptose is described.Figure optionsDownload as PowerPoint slide
Journal: Carbohydrate Research - Volume 342, Issue 17, 10 December 2007, Pages 2537–2545