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New antimicrobial flavonoids and chalcone from Colutea armata
Farah Inamullah,Itrat Fatima,Sadia Khan,Mehdi Hassan Kazmi,Abdul Malik,Rasool Bakhsh Tareen,Tanveer Abbas 대한약학회 2017 Archives of Pharmacal Research Vol.40 No.8
Colucins A (1) and B (2), new flavonoids andcolucone (3), the new chalcone derivative, have been isolatedfrom the CHCl3-soluble fraction of the whole plant ofColutea armata along with luteolin (4), luteolin 7-O-b-Dglucoside(5), isoliquiritigenin (6), trans-caffeic acid (7)and stigmasterol (8) reported for the first time from thisspecies. Their structures were elucidated by spectroscopictechniques including MS and 2D-NMR spectroscopy. Compounds 1 and 2 showed significant antimicrobialactivity against two Gram positive and three Gram negativebacterial strains while 3 was moderately active.
Brahol : A New Derivative of allo-Inositol from Stocksia brahuica
Yiqar Uddin Ahmad,Zulfiqar Ali,Muhammad Shaiq Ali,Muhammad Zahid,Rasool Bakhsh Tareen 한국생약학회 1998 Natural Product Sciences Vol.4 No.3
A new derivative of allo-inosital has been isolated from the aerial parts of Stocksia brahuica and named as brahol (1). The structure of 1 was elucidated with the help of extensive 2D-NMR spectroscopic techniques and identified as 5-O-methyl-allo-inositol. The structure was reconfirmed by acetate derivative (2).