484-15-1

Upstream product

• 53258-99-4 7-hydroxy-8-(3-methylbut-2-en-1-yl)-2-phenylchroman-4-one 
• 6515-36-2 7-hydroxy-2-phenyl-chroman-4-one 
• 115-18-4 2-methyl-3-buten-2-ol 

Downstream Products

• 64125-32-2 6,6-dimethylpyrano<2,3:7,8>flavone 

Relevant academic research and scientific papers

New Syntheses of Ovaliflavanone-A, Ovaliflavanone-B and Ovalichromene-B

Nuclear prenylation of 7-hydroxyflavanone using 2-methyl-but-3-en-2-ol in the presence of BF3-etherate yields ovaliflavanone-A (II), ovaliflavanone-B (V), 7-hydroxy-6-C-prenylflavanone (IV) and 7-(γ,γ-dimethylallyloxy)-flavanone (III).Nuclear prenylation of 7-hydroxy-3',4'-methylenedioxyflavanone has earlier been shown to yield four products, viz.XI, XII, XIII and XIV.One of them, viz. 7-hydroxy-3',4'-methylenedioxy-8-C-prenylflavanone (XIV) with DDQ furnishes ovalichromene-B (XV).Some of the prenylated compounds from the above flavanones when subjected to DDQ treatment furnish new chromenoflavanones, chromenoflavones and isolonchocarpin.