In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction. 74808-09-6, Name is (2R,3R,4S,5R,6R)-3,4,5-Tris(benzyloxy)-6-((benzyloxy)methyl)tetrahydro-2H-pyran-2-yl 2,2,2-trichloroacetimidate, molecular formula is C36H36Cl3NO6. In a Article，once mentioned of 74808-09-6, Safety of (2R,3R,4S,5R,6R)-3,4,5-Tris(benzyloxy)-6-((benzyloxy)methyl)tetrahydro-2H-pyran-2-yl 2,2,2-trichloroacetimidate
Phenyl 3,4,6-tri-O-benzyl-2-O-(3-carboxypropionyl)-1-thio-beta-D- galactopyranoside (1) was condensed via its pentafluorophenyl ester 2 with 5-aminopentyl (4a), 4-aminobutyl (4b), 3-aminopropyl (4c) and 2-aminoethyl 4,6-O-benzylidene-beta-D-glucopyranoside (4d), prepared from the corresponding N-Cbz protected glucosides 3a-d, to give the corresponding 2-[3- (alkylcarbamoyl)propionyl] tethered saccharides 5a-d. Intramolecular, ring closing glycosylation of the saccharides with NIS and TMSOTf afforded the tethered beta(1?3) linked disaccharides 6a-c, the a(1?3) linked disaccharides 7a-d and the a(1?2) linked disaccharide 8d in ratios depending upon the ring size formed during glycosylation. No beta(1?2) linked disaccharides were formed. Molecular modeling of saccharides 6-8 revealed that a strong aromatic stacking interaction between the aromatic parts of the benzyl and benzylidene protecting groups in the galactosyl and glucosyl moieties was mainly responsible for the observed regioselectivity and anomeric selectivity of the ring-closing glycosylation step.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics