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Benzopyran
About: Benzopyran is a research topic. Over the lifetime, 1889 publications have been published within this topic receiving 15235 citations.
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Patent•
18 Feb 1975
TL;DR: A method of reducing blood pressure in a hypertensive mammalian patient by administering 1,2-dihydro-4,4-dimethyl-9-hydroxy-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran or 1, 2-didro-5,5-dimethyltimethyl-10-hydroxyno-8-(3methyl- 2-Octyl)-3H,5H-ortho-thiopyrano[
Abstract: A method of reducing blood pressure in a hypertensive mammalian patient by administering 1,2-dihydro-4,4-dimethyl-9-hydroxy-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran or 1,2-dihydro-5,5-dimethyl-10-hydroxy-8-(3-methyl-2-octyl)-3H,5H-thiopyrano-8 2,3-c][1]benzopyran. Pharmaceutical compositions containing 1,2-dihydro-4,4-dimethyl-9-hydroxy-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran or 1,2-dihydro-5,5-dimethyl-10-hydroxy-8-(3-methyl-2-octyl)-3H,5H-thiopyrano[2,3-c][1]benzopyran dispersed in a pharmaceutical carrier.
TL;DR: The title compounds were synthesised by the palladium-catalysed intramolecular cyclization of 4-(2-iodoaryloxymethyl)-thiophene-2-carboxaldehydes as discussed by the authors.
Abstract: The title compounds were synthesised by the palladium-catalysed intramolecular cyclization of 4-(2-iodoaryloxymethyl)-thiophene-2-carboxaldehydes.
TL;DR: In this article, the synthesis of 2,2-dimethyl-4-formyl-7-methoxy-(2H)-1-benzopyran has been achieved by a three step reaction sequence.
Abstract: Synthesis of 2,2-dimethyl-4-formyl-7-methoxy-(2H)-1-benzopyran has been achieved by a three step reaction sequence, wherein the key step has been the preparation of 7-hydroxy-2,2,4-trimethyl-(2H)-1-benzopyran by a novel condensation reaction between resorcinol and mesityl oxide in presence of polyphosphoric acid (PPA). #R.R.L. (Jammu) communication no. 2348