99257-46-2

Upstream product

• 88847-11-4 Macaranganin 
• 77-78-1 dimethyl sulfate 
• 88847-11-4 nupharin A 

Downstream Products

• 1916-07-0 3,4,5-trimethoxybenzoic acid methyl ester 
• 4891-62-7 dimethyl (S)-4,4',5,5',6,6'-hexamethoxydiphenoate 
• 4891-62-7 4,5,6,4',5',6'-Hexamethoxy-biphenyl-2,2'-dicarboxylic acid dimethyl ester 

Relevant academic research and scientific papers

Tannins and Related Compounds. LXXV. Isolation and Characterization of Novel Diastereoisomeric Ellagitannins, Nupharins A and B, and Their Homologues from Nuphar japonicum DC.

The diastereoisomeric ellagitannins, nupharins A (1) and B (11), and related compouns (8, 10, and 15), have been isolated from the rhizomes of Nuphar japonicum DC. (Nymphaeaceae).On the basis of physicochemical evidence, their structures were characterized as 1,2,4-tri-O-galloyl- (1) and 1,2-di-O-galloyl-3,6-(S)-hexahydroxydiphenoyl-α-D-glucopyranoses (8), 2-O-galloyl-3,6-(S)-hexahydroxydiphenoyl-D-glucose (10), and 1,2,4-tri-O-galloyl- (11) and 1,2-di-O-galloyl-(R)-hexahydroxydiphenoyl-α-D-glucopyranoses (15).Keywords - Nuphar japonicum; Nymphaeaceae; diastereoisomer; ellagitannin; R-, S-hexahydroxydiphenoic acid; atropisomerism; nupharin A; nupharin B; α-D-glucose