کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1386228 | 982482 | 2005 | 4 صفحه PDF | دانلود رایگان |

The β glycoside of the tetrasaccharide sequence β-Ant-(1→3)-α-l-Rhap-(1→3)-α-l-Rhap-(1→2)-l-Rhap, whose aglycon allows conjugation to proteins, was synthesized for the first time. A stepwise synthetic approach was applied with thioglycosides as glycosyl donors, and the β anomer of the compound was obtained equipped with a spacer group whose further transformation allows conjugation to suitable carriers. To synthesize the β-anthrosyl linkage with high stereoselectivity, a linker-equipped rhamnotriose derivative was glycosylated with ethyl 4-azido-3-O-benzyl-2-O-bromoacetyl-4,6-dideoxy-1-thio-β-d-glucopyranoside. Further functionalization of the tetrasaccharide thus obtained, followed by deprotection, gave the target substance.
Synthesis of the tetrasaccharide side chain of the major glycoprotein of the Bacillus anthracis exosporium.Figure optionsDownload as PowerPoint slide
Journal: Carbohydrate Research - Volume 340, Issue 17, 12 December 2005, Pages 2579–2582