50276-60-3

Upstream product

• 4087-80-3 4,5,6-trimethoxyphthalide 
• 23346-82-9 2-bromo-3,4,5-trimethoxybenzoic acid 
• 56440-94-9 2-formyl-3,4,5-trimethoxybenzoic acid 
• 6273-57-0 2,3,4,6-tetramethoxy-5H-benzo[7]annulen-5-one 
• 67-64-1 acetone 
• 1968-72-5 methyl 6-amino-2,3,4-trimethoxy benzoate 
• 118-41-2 Eudesmic acid 

Downstream Products

• 7508-01-2 3,4,5-Trimethoxy-N-methylphthalimid 
• 61052-39-9 2-Hydroxymethyl-3.4.5-trimethoxy-benzylalkohol 
• 149-91-7 3,4,5-trihydroxybenzoic acid 
• 118-41-2 Eudesmic acid 
• 77961-11-6 1',3'-dihydroxy-3,4,5-trimethoxy-2'-methylbenzophenone-2-carboxylic acid 
• 62267-82-7 dimethyl 3,4,5-trimethoxy-1,2-benzenedicarboxylate 

Relevant academic research and scientific papers

ISOLATION, CHARACTERIZATION AND SYNTHESIS OF THREE NEW ANTHRAQUINONE GLYCOSIDES FROM CASSIA GRANDIS

From the seeds of Cassia grandis three glycosides, namely 2-O-β-D-glucopyranosyl-1,2,4,8-tetrahydroxy-6-methoxy-3-methylanthraquinone, 3-O-β-D-glucopyranosyl-3-hydroxy-6,8-dimethoxy-2-methylanthraquinone and 3-O-β-D-glucopyranosyl-1,3-dihydroxy-6,7,8-trimethoxy-2-methylanthraquinone have been isolated.The structures were determined by spectroscopic methods and confirmed by synthesis.

Synthesis of 1,3-Dihydroxy-5,6,7-trimethoxy-2-methyl-anthraquinone

A new anthraquinone, viz. 1,3-dihydroxy-5,6,7-trimethoxy-2-methylanthraquinone has been synthesised by the cyclisation of 1',3'-dihydroxy-3,4,5-trimethoxy-2'-methylbenzophenone-2-carboxylic acid with sulphuric acid in presence of boric acid, and has been found to be identical with the natural sample earlier isolated from Cassia javanica roots.