143886-01-5Relevant academic research and scientific papers
Synthesis, biological activity and solvent-induced shifts in the 1H NMR spectra of 2,3-dihydro-4H-1-benzopyran-4-ones
Parmar, V. S.,Vardhan, Anand,Sharma, S. K.,Sharma, N. K.,Bisht, K. S.
, p. 17 - 26 (2007/10/02)
Substituted 2,3-dihydro-2-phenyl-4H-1-benzopyran-4-ones (flavanones, 5-10) have been synthesized (7-10 for the first time) and their biological activities tested.The 1H NMR spectra of these flavanones have been measured in pure CDCl3 and in 1:1 mixtures o
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.
