http://nopr.niscpr.res.in/handle/123456789/21483 2026-10-09T12:26:41Z http://nopr.niscpr.res.in/handle/123456789/21743 Title: A new triterpene from <i>Adiantum lunulatum </i>Burm. Authors: Mukherjee, K S; Mondal, S; Sohel, SMA; Mukherjee, P; Chatterjee, D; Brahmachari, G Abstract: From the petrol extract of the whole plants of <i>Adiantum lunulatum </i>Burm. (Adiantaceae) a new triterpene characterized as<i> </i>3β-acetoxy-6α-hydroxy-hop-15, 17(21)-diene <b>1</b> has been isolated<i> </i>and its structure elucidated with the help of spectral as well as<i> </i>chemical studies. Page(s): 2665-2667 2003-10-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/21742 Title: Synthesis of olivacene, a constituent of <i>Archilejeunea olivacea</i> Authors: Kamat, Shrivallabh P; D'Souza, Asha M; Paknikar, Shashikumar K Abstract: A simple synthesis of olivacene <b>1</b>, a naturally occurring sesquiterpenoid hydrocarbon isolated from <i>Archilejeunea olivacea</i> has been described. Page(s): 2662-2664 2003-10-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/21741 Title: Anticonvulsant activity of semicarbazone derivatives of Mannich bases Authors: Pandeya, S N; Sowmyalakshmi, V; Panda, S S; Pandeya, A; Stables, J P Abstract: A series of semicarbazones of semicarbazide/<i>p</i>-chlorophenyl semicarbazide and Mannich bases of acetophenone/<i>p</i>-chloroacetophenone has been synthesized and their anticonvulsant activity screened against MES and scPTZ test. <i>p</i>-Chlorophenyl semicarbazone of N,N-dimethylaminopropiophenone has been found to be the most active in all these tests. Page(s): 2657-2661 2003-10-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/21740 Title: Synthesis and antimicrobial activity of 5-[(4-aroyl) aryloxymethyl]-2-(4- methylphenylamino)-1 ,3,4-thiadiazoles and 5-[(4-aroyl) aryloxy methyl]-4- (4-methylphenyl)-3-mercapto-4<i>H</i>-1,2,4-triazoles Authors: Sudha, B S; Shashikanth, S; Khanum, Shaukath Ara Abstract: Aroyl aryloxyaeetic thiosemicarbazides <b>4a-d</b> have been synthesized by the reaction of acid hydrazides <b>3a-d</b> with <i>p</i>-tolyl isothiocyanate. The aroyl aryloxyacetic thiosemicarbazides <b>4a-d</b> on intramolecular cyclization using cone. H₂SO₄ and 2<i>N </i>NaOH give 1,3,4-thiadiazoles <b>5a-d</b> and 3-mercapto-4<i>H</i>-1,2,4-triazoles <b>6a-d</b>, respectively. The structures of the synthesised compounds have been determined by their elemental analysis and spectral data. The synthesized compounds are evaluated for their antibacterial activity. Page(s): 2652-2656 2003-10-01T00:00:00Z