188357-34-8Relevant academic research and scientific papers
Synthesis of 12- O-Mono- and Diglycosyl-oxystearates, a New Class of Agonists for the C-type Lectin Receptor Mincle
Van Huy, Le,Tanaka, Chiaki,Imai, Takashi,Yamasaki, Sho,Miyamoto, Tomofumi
supporting information, p. 44 - 49 (2019/01/15)
Fifteen glycosyl-oxystearates were synthesized by Crich's 4,6-benzylidene and K?ening-Knorr strategies. Assessment of structure-activity relationships using macrophage-inducible C-type lectin (Mincle) receptor cells expressing nuclear factor of activated
Stereoselective formation of glycosyl sulfoxides and their subsequent equilibration: Ring inversion of an α-xylopyranosyl sulfoxide dependent on the configuration at sulfur
Crich, David,Mataka, Jan,Zakharov, Lev N.,Rheingold, Arnold L.,Winkt, Donald J.
, p. 6028 - 6036 (2007/10/03)
A series of four S-allyl D-thiopyranosides, α- and β-manno and xylo, were oxidized with MCPBA at low temperature to give seven of the eight possible sulfoxides, whose configuration at sulfur was determined either directly by X-ray crystallography or by co
Direct chemical synthesis of β-mannopyranosides and other glycosides via glycosyl triflates
Crich, David,Sun, Sanxing
, p. 8321 - 8348 (2007/10/03)
High yield, highly stereoselective methods for the synthesis of β- mannopyranosides primary, secondary, and tertiary alcohols are presented. Activation of mannosyl sulfoxides or mannosyl thioglycosides with trifluoromethanesulfonic anhydride or benzenesulfenyl triflate, respectively, leads to the efficient formation of α-mannosyl triflates at -78 °C in dichloromethane, in the presence of 2,6-di-tertbutyl-4-methylpyridine. These triflates then react S(N)2-like with alcohols to give the β-mannosides. The use of a 4,6-O-benzylidene protected mannose is required for high selectivity, as is the use of non-participating protecting groups on O-2 and O-3 of the donors. It is further demonstrated that the thioglycoside/benzensulfenyl triflate activation is applicable in the glucoside series, when both armed and disarmed protecting groups are tolerated.
Stereoselective sulfoxidation of α-mannopyranosyl thioglycosides: The exo-anomeric effect in action
Crich, David,Mataka, Jan,Sun, Sanxing,Lam,Rheingold, Arnold L.,Wink, Donald J.
, p. 2763 - 2764 (2007/10/03)
As a consequence of the exo-anomeric effect, and in contrast to their β-anomers, α-thioglycosides undergo stereoselective oxidation to give very predominantly the R-sulfoxides, as revealed by X-ray crystallography.
