82220-63-1

Upstream product

• 30737-92-9 tellimagrandin I 
• 77-78-1 dimethyl sulfate 
• 82220-61-9 gemin A 

Relevant academic research and scientific papers

Woodfordin D and oenothein A, trimeric hydrolyzable tannins of macro-ring structure with antitumor activity

Two new antitumor trimeric hydrolyzable tannins, woodfordin D (5) and oenothein A (13), were isolated from the dried flowers of Woodfordia fruticosa, and their macrocyclic structures, which have a novel constituent unit (woodfordinoyl group) connecting the monomers, have been elucidated on the basis of spectral and chemical evidence. Oenothein A (13) was also isolated from the leaves of Oenothera biennis.

Structure of Gemin A, a new Dimeric Ellagitannin having α- and β-Glucose Cores

A dimeric ellagitannin, gemin A (1), has been isolated from Geum japonicum Thunb., and its structure, which contains α- and β-glucose cores, has been elucidated.