94244-28-7

Upstream product

• 68436-61-3 7-benzyloxy-2,2,8-trimethyl-chroman-4-one 
• 121485-17-4 1-(2,4-Dihydroxy-3-methyl-phenyl)-3-methyl-but-2-en-1-one 
• 608-25-3 2-methylbenzene-1,3-diol 
• 541-47-9 3-Methylbutenoic acid 
• 50544-72-4 2,3-dihydro-7-hydroxy-2,2,8-trimethyl-4H-benzopyran-4-one 

Relevant academic research and scientific papers

SYNTHESIS OF ANALOGUES OF NATURAL PRECOCENES CONTAINING A 8-METHYL SUBSTITUENT

The synthesis of benzopyran compounds (VIIIa-q), analogues of precocene I (I) substituted on C-8 in the aromatic ring with a methyl group, is described.

Pyranochromone derivatives and therapeutic composition comprising same for treatment of allergic diseases

Novel pyranochromone derivatives having the general formula: STR1 wherein R1 represents hydrogen atom, an alkali metal or an alkyl group containing 1-4 carbon atoms; R2, R3 and R4 represent hydrogen atom or an alkyl group containing 1-4 carbon atoms respectively, provided that both R3 and R4 are not hydrogen atom at the same time; R5 and R6 represent an alkyl group containing 1-4 carbon atoms respectively; and R7 represents hydrogen atom, hydroxyl group, an alkyl group containing 1-4 carbon atoms or an alkoxyl group containing 1-4 carbon atoms. The novel medicaments comprising predominantly the above derivative are effective for the treatment of allergic diseases.