Reversible and Efficient Inhibition of UDP-Galactopyranose Mutase by Electrophilic, Constrained and Unsaturated UDP-Galactitol Analogues
作者:Christophe Ansiaux、Inès N'Go、Stéphane P. Vincent
DOI:10.1002/chem.201202302
日期:2012.11.12
A series of UDP‐galactitols were designed as analogues of high‐energy intermediates of the UDP‐galactopyranosemutase (UGM) catalyzedfuranose/pyranoseinterconversion, an essential step of Mycobacterium tuberculosis cell wall biosynthesis. The final compounds structurally share the UDP and the galactitol substructures that were connected by four distinct electrophilic connections (epoxide, lactone
Efficient and regioselective synthesis of γ-lactone glycosides through a novel debenzylative cyclization reaction
作者:Julien A. Delbrouck、Abdellatif Tikad、Stéphane P. Vincent
DOI:10.1039/c8cc05523h
日期:——
glycosides is reported from unprotected aldoses through a new debenzylative lactonization (DBL) reaction. The scope and limitations of this DBL reaction are described starting from a series of commercially available hexoses (L-fucose, D-galactose, D-glucose) and pentoses (D-arabinose, D-ribose, D-lyxose, D-xylose) to afford the corresponding γ-lactones in good yields and without concomitant δ-lactone formation
Synthesis of acyclic galactitol- and lyxitol-aminophosphonates as inhibitors of UDP-galactopyranose mutase
作者:Weidong Pan、Christophe Ansiaux、Stéphane P. Vincent
DOI:10.1016/j.tetlet.2007.04.113
日期:2007.6
UDP-galactopyranose mutase (UGM) catalyzes the isomerization of UDP-galactopyranose (UDP-Galp) into UDP-galactofuranose (UDP-Ga1f), an essential step of the mycobacterial cell wall biosynthesis. Acyclic alditol-aminophosphonates in the D-galactose and D-lyxose series were designed as mimics of high energy intermediates of the UGM catalyzed isomerization. Interestingly, the D-lyxitol-aminophosphonate displayed better inhibition properties than the D-galactitol-aminophosphonatc. (c) 2007 Elsevier Ltd. All rights reserved.
Regioselective Synthesis of Difluorinated <i>C</i>-Furanosides Involving a Debenzylative Cycloetherification
作者:Julien A. Delbrouck、Valentin N. Bochatay、Abdellatif Tikad、Stéphane P. Vincent
DOI:10.1021/acs.orglett.9b01878
日期:2019.7.19
A highly regioselective synthesis of valuable gem-difluorinated C-furanosides from unprotected aldoses via a debenzylative cycloetherification (DBCE) reaction induced by diethylaminosulfur trifluoride is descibed. The scope and limitations of this DBCE reaction are described using a series of commercially available pentoses and hexoses to afford, without selective protection/deprotection sequences
Synthesis of 3-deoxy-2-octulosonic acid derivatives and characterization of their 3-deoxyoctitols
作者:Thomas Krülle、Otto Holst、Helmut Brade、Richard R. Schmidt
DOI:10.1016/0008-6215(93)84248-5
日期:1993.9
to synthesise the respective O-benzyl aldehydo-sugars as intermediates for the synthesis of 3-deoxy-D-glycero-D-gluco/manno-3-deoxy-D-glycero-L-gulo/ido -, and 3-deoxy-D-glycero-L-allo/altro-octonate derivatives, respectively. After reduction and deprotection, the respective 3-deoxyoctitols were obtained. For the synthesis of 3-deoxy-D-glycero-L-galacto/talo-octitol, 2,3:5,6-di-O-isopropylidene-D-gulono-1