http://nopr.niscair.res.in/handle/123456789/1721 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/3848 Title: Two new neolignan glycosides from Pteris multifida Poir <br/> <br/>Authors: Xu-dong, Zheng; Hao-bin, Hu; Huai-sheng, Hu <br/> <br/>Abstract: Two new neolignan glycosides, named as multifidoside A 1 and B 2, together with four known compounds have been isolated from the roots of Pteris multifida Poir. The structures of multifidoside A and B have been characterized by spectroscopic and chemical means as (7S, 8S)-Δ^7′-2,9′-dihydroxy-5′-methoxy-7,3′-dioxy-8,4′-neolignan-4-O-β-D-apiofuranosyl-(1→6)-β-D-gluco¬pyranoside and (7S, 8S)-Δ^7′-2,9,9′-trihydroxy-7,3′-dioxy-8,4′-neolignan-4-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside. The known compounds are identified by comparing their spectral data with those of authentic samples or data reported in the literature. <br/> <br/>Page(s): 773-777 Mon, 28 Apr 2008 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/1737 Title: A novel and environmental friendly, one-step synthesis of 2,6-Diamino-4-phenyl pyrimidine-5-carbonitrile using potassium carbonate in water <br/> <br/>Authors: Deshmukh, M B; Anbhule, P V; Jadhav, S D; Jagtap, S S; Patil, D R; Salunkhe, S M; Sankpal, S A <br/> <br/>Abstract: A green, simple and environmentally friendly approach has been carried out towards one-step synthesis of 2,6-diamino-4-phenyl pyrimidine-5-carbonitrile by three-component condensation of aromatic aldehydes, malononitrile and guanidine hydrochloride in aqueous medium using potassium carbonate and in the presence of tetrabutyl ammonium bromide. <br/> <br/>Page(s): 792-795 Mon, 28 Apr 2008 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/1736 Title: Synthesis and nematicidal activity of 2-(1H-benzo[d]imidazol-2-ylmethyl)-4- aryl-1-thia-4-azaspiro[4.5]decan-3-one <br/> <br/>Authors: Srinivas, A; Nagaraj, A; Reddy, Ch Sanjeeva <br/> <br/>Abstract: A series of N-cyclohexylidene-N-phenylamines 3 are prepared by the condensation of cyclohexanone 1 with aryl amine 2, subsequent treatment of 3 with thiomalic acid give the corresponding 2-(3-oxo-4-aryl-1-thia-4- azaspiro[4.5]dec-2-yl)acetic acid 4, which on reaction with o-phenylenediamine give 2-(1H-benzo[d]imidazol-2-ylmethyl)- 4-aryl-1-thia-4-azaspiro[4.5]decan-3-one 5. Characterization of all the compounds has been done by IR, ¹H NMR, MS and elemental analyses. The antibacterial, antifungal and nematicidal activities of the compounds have also been evaluated. <br/> <br/>Page(s): 787-791 Mon, 28 Apr 2008 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/1735 Title: Synthesis, antimicrobial and mosquito larvicidal activity of N -protected amino acid/peptide isoxazoles <br/> <br/>Authors: Rajanarendar, E; Mohan, G; Rao, E Kalyan; Reddy, A Siva Rami; Praveen, B; Rao, M Srinivasa <br/> <br/>Abstract: A series of N-protected amino acid/peptide isoxazoles 4-12 and 15-16 have been synthesized and the antimicrobial activity evaluated against three gram positive, three gram negative bacteria and five plant pathogenic fungi. Mosquito larvicidal activity of the newly synthesized compounds is also studied against fourth instar larve Culex quinquefasciatus. <br/> <br/>Page(s): 781-786 Mon, 28 Apr 2008 22:58:59 GMT