From the ethanolic extract of aerial parts of Blepharis ciliaris one novel flavone, apigenin 7-(3 ''-acetyl-6 ''-E-p-coumaroylglucoside), and one novel flavanone, naringenin 7-(3 ''-acetyl-6 ''-E-p-coumaroylglucoside), were isolated. Their structures were elucidated mostly based on electrospray mass spectrometry and homo- and hetero-nuclear two-dimensional NMR techniques. No flavonoid has previously been identified with aliphatic and aromatic acyl groups on the same monosaccharide in the 3- and 6-positions, respectively. Copyright (C) 1996 Elsevier Science Ltd
Acylated flavonoids from Blepharis ciliaris / F.M. Harraz, A.T. Pedersen, O.M. Andersen, L. Verotta, M. Tatò. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - 43:2(1996), pp. 521-525. [10.1016/0031-9422(96)00289-0]
Acylated flavonoids from Blepharis ciliaris
L. VerottaPenultimo
;
1996
Abstract
From the ethanolic extract of aerial parts of Blepharis ciliaris one novel flavone, apigenin 7-(3 ''-acetyl-6 ''-E-p-coumaroylglucoside), and one novel flavanone, naringenin 7-(3 ''-acetyl-6 ''-E-p-coumaroylglucoside), were isolated. Their structures were elucidated mostly based on electrospray mass spectrometry and homo- and hetero-nuclear two-dimensional NMR techniques. No flavonoid has previously been identified with aliphatic and aromatic acyl groups on the same monosaccharide in the 3- and 6-positions, respectively. Copyright (C) 1996 Elsevier Science Ltd
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