53258-99-4Relevant academic research and scientific papers
8-Prenylflavanones through Microwave Promoted Tandem Claisen Rearrangement/6-endo-trig Cyclization and Cross Metathesis
Schultze, Christiane,Fo?, Stefan,Schmidt, Bernd
supporting information, p. 7373 - 7384 (2020/11/30)
Prenylated flavanones were obtained from ortho-allyloxy chalcones through a one-pot sequence of Claisen rearrangement and 6-endo-trig cyclization, followed by olefin cross metathesis of the intermediate allyl flavanones with 2-methyl-2-butene. The synthet
New Syntheses of Ovaliflavanone-A, Ovaliflavanone-B and Ovalichromene-B
Islam, Azizul,Gupta, Rajinder K.,Krishnamurti, M.
, p. 21 - 22 (2007/10/02)
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.
