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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.
Farman Ullah,Inamullah Khan,Hart, Robert-Spooner,Peter Bailey,Khalil, Said-Khan Korean Society of Applied Entomology 2002 Journal of Asia-Pacific Entomology Vol.5 No.1
Morphological features of the ladybird beetle Stethorus vegans (Blackburn) were studied at 25 $\pm$ $2^{\circ}$ with a photoperiod of 16L: 8D. All stages of S. vahans were examined under a stereo-zoom microscope. Newly laid eggs were translucent white, turning pale yellow after 4-5 hours. The mean egg dimension was 0.36 x 0.19 mm. Eggs laid by unmated females did not hatch or show any signs of development. Newly emerged larvae were white in color, but soon became pale creamy-white. There were four larval instars, which were differentiated from each other by the presence of exuviae and differences in head capsule size. The pre-pupa, not a distinct stage in the life cycle but a quiescent period at the end of the 4th larval instar, lasted for several hours. Pupae were oval, flattened and black-brown with (me hair like setae on their dorsal sides with a mean length and width of 1.06 x 0.74 mm. The adults were oval, convex and black with small yellow setae on their dorsal side.