Synthesis of a new glycosphingolipid, neurosporaside, from Neurospora crassa
摘要:
The glycosphingolipid neurosporaside (alpha-D-Glcp-(1 -> 2)-beta-D-Galp-(1 -> 6)-beta-D-Galp-(1 -> 6)-beta-D-Galp-(1 ->)-Cer) occurs in Neurospora crassa. We attempted to synthesize neurosporaside by block synthesis (route A) and linear synthesis (route B). Oligosaccharide derivatives were synthesized using trimethylsilyltrifluoromethanesulfonate and N-iodosuccinimide/trifluoromethane sulfonic acid as promoters. The target tetrasaccharide could not be attained via route A, but route B showed potential: glycosidic bonds (beta-D-Galp-(1 -> 6)-beta-D-Galp-(1 -> 6)-beta-D-Galp) were formed stereoselectively, leading to the synthesis of glycosphingolipid 2. (C) 2014 Elsevier Ltd. All rights reserved.
Unusual α-glycosylation with galactosyl donors with a C2 ester capable of neighboring group participation
作者:Langqiu Chen、Fanzuo Kong
DOI:10.1016/s0040-4039(03)00673-7
日期:2003.4
6-O-benzylidene-1-thio-β-d-galactopyranoside (15) as the donor, glycosylation of 2 gave α-linked products only, indicating that 4,6-O-benzylidenation led to α-stereoselectivity in spite of the C2 ester capable of neighboringgroup participation. Using 15 as the donor, glycosylation of mannose derivatives with 2- or 3-OH's, glucose with 2- or 3-OH's, galactose with 2-, or 3-, or 4-OH's, glucosamine and glucuronic
Regioselective benzoylation of sugars mediated by excessive Bu2SnO: observation of temperature promoted migration
作者:Zhiyuan Zhang、Chi-Huey Wong
DOI:10.1016/s0040-4020(02)00661-0
日期:2002.8
Regioselective benzoylation of carbohydrates using an excess of dibutyltin oxide (Bu2SnO) at increased reaction temperatures has been developed for the synthesis of several glycoside benzoates with one or two free hydroxyl groups, including galactosides, glucosides, mannosides and lactosides in high yields. These compounds are useful as building blocks for the synthesis of complex saccharides and derivatives. (C) 2002 Elsevier Science Ltd. All rights reserved.
US9925254B2
申请人:——
公开号:US9925254B2
公开(公告)日:2018-03-27
Synthesis of a new glycosphingolipid, neurosporaside, from Neurospora crassa
The glycosphingolipid neurosporaside (alpha-D-Glcp-(1 -> 2)-beta-D-Galp-(1 -> 6)-beta-D-Galp-(1 -> 6)-beta-D-Galp-(1 ->)-Cer) occurs in Neurospora crassa. We attempted to synthesize neurosporaside by block synthesis (route A) and linear synthesis (route B). Oligosaccharide derivatives were synthesized using trimethylsilyltrifluoromethanesulfonate and N-iodosuccinimide/trifluoromethane sulfonic acid as promoters. The target tetrasaccharide could not be attained via route A, but route B showed potential: glycosidic bonds (beta-D-Galp-(1 -> 6)-beta-D-Galp-(1 -> 6)-beta-D-Galp) were formed stereoselectively, leading to the synthesis of glycosphingolipid 2. (C) 2014 Elsevier Ltd. All rights reserved.
Synthetic Antigen Constructs Against Campylobacter Jejuni
申请人:Guerry Patricia
公开号:US20160144017A1
公开(公告)日:2016-05-26
The invention relates to immunogenic synthetic constructs capable of inducing an immune response against
Campylobacter jejuni
(
C. jejuni
) in a subject comprising one or more monosaccharides comprising one or more MeOPN moieties. Specifically, the invention relates to immunogenic synthetic constructs capable of inducing an immune response against
Campylobacter jejuni
(
C. jejuni
) in a subject comprising one or more MeOPN→6 Gal monosaccharides. The invention also relates to compositions comprising the immunogenic synthetic constructs and methods of inducing an immune response against
C. jejuni
in a subject comprising administering the immunogenic synthetic constructs, and/or compositions comprising the immunogenic synthetic construct, to the subject.