Revised structures of the flavonoids from <i>Limnophila gratissima </i>(Scrophulariaceae)

Abstract

<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">7-Desmethylartemetin (5,7-dihydroxy-3,6,3',4'-tetramethoxy-flavone), a rare flavonoid reported from <i>Limnophila gratissima, </i>has been found to be a mixture or two) flavones [5,7-dihydroxy- 6,8,4'-trimethoxyflavone (nevadensin) and 5-hydroxy-6,7.4'-trimethoxy flavone <span style="font-size:12.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" hiddenhorzocr;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" ar-sa"="" lang="EN-IN">(salvigenin)]<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">. Besides the plant contains two phenolic acids; caffeic acid and chlorogenic acid. The present finding is supported by chemotaxonomy of Scrophulariaceae.</span></span></span>