Showing papers on "Karanjin published in 1955"
TL;DR: In this article, two new furano-flavones (compounds C and D) were reported from the root bark of Pongamia pinnata (L.) Merr., besides karanjin (I) and its methylene dioxy derivative, named pongapin.
Abstract: Two new furano-flavones (compounds C and D) were reported by Row1 from the root bark of Pongamia pinnata (L.) Merr., besides karanjin (I) and its methylene dioxy derivative, named pongapin. From a study of the alkaline degradation and other reactions, they were regarded as isomeric with pongapin and karanjin respectively.
10 citations
TL;DR: Starting from 7-hydroxy-3-methoxyflavone-8aldehyde (II), 3methoxyl-7,8-furan-α-carboxylic acid (IV) was synthesised in good yield by the method of Tanaka for benzofuran synthesis and was decarboxylated in quinoline with copper powder into karanjin (I).
Abstract: Starting from 7-hydroxy-3-methoxyflavone-8-aldehyde (II), 3-methoxyflavone-7,8-furan-α-carboxylic acid (IV) was synthesised in good yield by the method of Tanaka for benzofuran synthesis and was decarboxylated in quinoline with copper powder into karanjin (I).
8 citations