850647-86-8Relevant articles and documents
Synthesis and stereoselective glycosylation of D- and L-glycero-β-D- manno-heptopyranoses
Crich, David,Banerjee, Abhisek
, p. 1395 - 1398 (2005)
(Chemical Equation Presented) A method for the direct stereocontrolled synthesis of D- and L-glycero-β-D-manno-heptopyranosides such as those found in the repeating unit of the O-specific polysaccharide from the CNCTC 113/92 LPS (serotype 54) is described
Influence of O6 in mannosylations using benzylidene protected donors: Stereoelectronic or conformational effects?
Frihed, Tobias Gylling,Walvoort, Marthe T. C.,Codee, Jeroen D. C.,Van Der Marel, Gijs A.,Bols, Mikael,Pedersen, Christian Marcus
, p. 2191 - 2205 (2013/05/08)
The stereoselective synthesis of β-mannosides and the underlying reaction mechanism have been thoroughly studied, and especially the benzylidene-protected mannosides have gained a lot of attention since the corresponding mannosyl triflates often give exce
Stereocontrolled synthesis of the D- and L-glycero-β-D-manno- heptopyranosides and their 6-deoxy analogues. Synthesis of methyl α-L-rhamno-pyranosyl-(1→3)-D-glycero-β-D-manno-heptopyranosyl- (1→3)-6-deoxy-glycero-β-D-manno-heptopyranosyl-(1→4) -α-L-rhamno-pyranoside, a tetrasaccharide subunit of the lipopolysaccharide from Plesimonas shigelloides
Crich, David,Banerjee, Abhisek
, p. 8078 - 8086 (2007/10/03)
The synthesis of D- and L-glycero-α-manno-thioheptopyranosides, protected with 4,6-O-alkylidene-type acetals is described. In glycosylations carried out with preactivation with the 1-benzenesulfinylpiperidine/ trifluoromethanesulfonic anhydride couple, both the D- and L-glycero series exhibit excellent β-selectivity with a range of glycosyl acceptors. In contrast, a 4,7-O-alkylidene acetal was found not to afford β-selectivity. With a 4,6-O-[1-cyano-2-(2-iodophenyl)ethylidene] acetal protected thioglycoside, excellent β-selectivity was obtained in glycosylation reactions, and subsequent treatment with tributyltin hydride and azoisobutyronitrile brought about clean fragmentation to the 6-deoxy-glycero-β-D-manno-heptopyranosides. This chemistry was applied to the stereocontrolled synthesis of methyl α-L-rhamnopyranosyl-(1→3)-D- glycero-β-D-manno-heptopyranosyl-(1→3)-6-deoxy-glycero-β-D-manno- heptopyranosyl-(1→4)-α-L-rhamno-pyranoside, a component of the lipopolysaccharide from Plesimonas shigelloides.