Synthesis, Structure Characterization, and X-ray Crystallography of Novel 1-Benzyl-3-phenyl-1<i>H</i>-pyrazole-5-carboxylate Derivatives with a Carbohydrate Moiety
A series of novel (2S,3R,4S,5R)-3,4,5-triacetoxy-tetrahydro-2H-pyran-2-yl 1-benzyl-3-phenyl-1H-pyrazole-5-carboxylate derivatives (3) were synthesized by the reaction of 2,3,4-tri-O-acetyl-α-D-xylopyranosyl bromide (2) and 1-benzyl-3-phenyl-1H-pyrazole-5-carboxylic acid (1) in the presence of sodium bicarbonate and tetrabutylammonium bromide in dichloromethane at reflux temperature. The structures