59252-29-8

Upstream product

• 1968-71-4 methyl 2-bromo-3,4,5-trimethoxybenzoate 
• 82220-66-4 dimethyl penta-O-methyl-m-dehydrodigallate 
• 186581-53-3 diazomethane 
• 135388-93-1 5-Benzyloxy-3-hydroxy-4-methoxybenzoesaeuremethylester 
• 98799-41-8 2-iodo-3,4,5-trimethoxybenzoic acid 
• 18107-18-1 diazomethyl-trimethyl-silane 
• 1010094-03-7 3-benzyloxy-5,6'-bis(acetoxymethyl)-2,2',3',4'-tetramethoxy-1,1'-diphenylether 
• 1010094-01-5 C₂₅H₂₈O₈ 
• 1010093-99-8 dimethyl 3-benzyloxy-2,2',3',4'-tetramethoxy-1,1'-diphenylether-5,6'-dicarboxylate 
• 1010094-09-3 1-acetoxymethyl-3-(6-acetoxymethyl-2,3,4-trimethoxyphenoxy)-4,8,9,10-tetramethoxydibenzo[b,d]pyran-6-one 
• 1010094-07-1 5-(acetoxymethyl)-3-(6-(acetoxymethyl)-2,3,4-trimethoxyphenoxy)-2-methoxyphenyl 2-iodo-3,4,5-trimethoxybenzoate 
• 1010094-05-9 3-hydroxy-5,6'-bis(acetoxymethyl)-2,2',3',4'-tetramethoxy-1,1'-diphenylether 
• 67-56-1 methanol 
• 115520-82-6 nobotanin O 

Relevant academic research and scientific papers

Syntheses of all-methylated ellagitannin, isorugosin B and rugosin B

Ellagitannins possess a wide range of biological activities and remarkable structural diversity, which commonly include an axially chiral biaryl unit. This paper describes syntheses of all-methylated versions of isorugosin B and rugosin B, which are regio

Two novel dicarboxylic acid derivatives and a new dimeric hydrolyzable tannin from walnuts

In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical data. The antioxidant effect of these isolates was also evaluated by SOD-like and DPPH radical scavenging activities.

Macrocyclic ellagitannin dimers, cuphiins D1 and D2, and accompanying tannins from Cuphea hyssopifolia

Two new ellagitannin dimers, cuphiins D1 and D2, and six known compounds including oenothein B and woodfordin C have been isolated from the aerial part of Cuphea hyssopifolia (Lythraceae). Macrocyclic structures of the new tannins were elucidated based on chemical and spectral evidence.

Oligomeric hydrolysable tannins from Tibouchina multiflora

Two hydrolysable tannins, nobotanin O and nobotanin P, were isolated from the leaf extract of Tibouchina multiflora (Melastomataceae) and their dimeric and tetrameric structures elucidated on the basis of spectral data and chemical correlations with nobotanin B and K, respectively. Thirteen known hydrolysable tannins including nobotanins A, B, C and J, which are oligomers characteristic of the Melastomataceae, were also isolated.

Dimeric and trimeric ellagitannins from Corylus heterophylla

Besides previously reported tannins and related polyphenots, additional two new hydrolysable tannins, heterophylliins F and G, were isolated from the leaf extract of Corylus heterophylla, and characterized by spectral and chemical evidence as dimeric and trimeric ellagitannins, respectively, in which monomeric units are linked to each other through a valoneoyl group.

Tannins and related compounds. CXXIV. Five new ellagitannins, platycaryanins A, B, C, and D, and platycariin, and a new complex tannin, strobilanin, from the fruits and bark of Platycarya strobilacea Sieb et Zucc., and biomimetic synthesis of C-glycosidic

Five new ellagitannins, platycaryanins A (27), B (26), C (30), and D (25), and platycariin (31), and a new complex tannin, strobilanin (32), have been isolated from the fruits and bark of Platycarya strobilacea SIEB, et ZUCC, (Juglandaceae), together with

HIRSUNIN, AN ELLAGTANNIN WITH A DIARYLHEPTANOID MOIETY, FROM ALNUS HIRSUTA VAR. MICROPHYLLA

A novel ellagtannin, hirsunin, was isolated from the leaves of Alnus hirsuta var. microphylla and the structure which consist of diarylheptanoid glycoside (oregonin) and ellagtannin (praecoxin A) moieties connected through an ester linkage has been elucidated.Furthermore, the occurrence of the seven known hydrolysable tannins, pedunculagin, praecoxin A, 1,2,6- and 1,4,6-tri-O-galloyl-β-D-glucoses, 1-desgalloyleugeniin, 1-desgalloylrugosin F, and rugosin F, along with oregonin and gentisic acid 5-O-β-D-(6'-O-galloyl)-glucopyranoside has also been demonstrated. Key words: Alnus hirsuta var. microphylla; Betulaceae; hydrolysable tannin; ellagtannin; hirsunin; praecoxin A; diarylheptanoid; oregonin.

Tannins of Euphorbiaceous plants. X. Antidesmin A, a new dimeric hydrolyzable tannin from Antidesma pentandrum var. barbatum

A new hydrolyzable tannin, antidesmin A (4), was isolated along with carpinusin (1) and geraniin (2) from dried leaves of Antidesma pentandrum MERR. var. barbatum MERR., and its dimeric structure, composed of davidiin (3) and geraniin (2), has been elucidated by spectral and chemical methods.

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.