113900-70-2

Downstream Products

• 149-91-7 3,4,5-trihydroxybenzoic acid 
• 83541-38-2 2,3-O-4,4′,5,5′,6,6′-hexahydroxydiphenoyl-β-D-glucose 
• 83541-37-1 2,3-O-4,4′,5,5′,6,6′-hexahydroxydiphenoyl-α-D-glucose 

Relevant academic research and scientific papers

Synthesis of enantiomerically pure unusual ellagitannins 1,4,6-tri-O- galloyl-2,3-(R)-hexahydroxydiphenoyl-β-D-glucopyranoside and 4,6-di-O- galloyl-2,3-(R)-hexahydroxydiphenoyl-D-glucoside. The proposed chemical structures for cercidinin A and B must be revised

The total syntheses of the enantiomerically pure unusual ellagitannins 1,4,6-tri-O-galloyl-2,3-(R)hexahydroxydiphenoyl-β-D-glucopyranoside (1) and 4,6-di-O-galloyl-2,3-(R)-hexahydroxydiphenoyl-D-glucoside (2) are reported. The NMR data of the synthetic ellagitannins 1 and 2 are not identical with those reported for cercidinin A and B. Thus, the proposed structures for cercidinin A and B must be revised.

The first total synthesis of praecoxin B and pterocarinin C, two natural products of the tannin class

Enantiomerically pure diphenic ester 3 was obtained by esterification of acyl chloride 2 with the glucose derivative 1 by kinetic resolution. Hydrolysis of the ester 3, acylation of the free OH groups at C-4 and C-6 of the diol 4 with acid 5 followed by i