01415nas a2200253   4500008004100000022001400041245006700055210006700122260008900189300001400278490000700292520056400299653002000863653001200883653002700895653001900922100002000941700001800961700001900979700002100998700002201019700002401041856009601065       2006                        eng d  a0376-469900aIsolation of new straight chain compounds from acacia nilotica0 aIsolation of new straight chain compounds from acacia nilotica  aDR K S KRISHNAN MARG, NEW DELHI 110 012, INDIAbNATL INST SCIENCE COMMUNICATIONcMAY  a1231-12330 v453 a<p>A novel diester, pentacosane dioic acid dihexadecyl ester 1 has been isolated for the first time from n-hexane soxhlet extract of Acacia nilotica. Saponification of the diester reveals the presence of an alcohol, hexadecanol and pentacosane dioic acid. The structures of both the compounds are confirmed by GCMS analysis. Saponification of pet-ether extract of Acacia nilotica has been carried out. Unsaponiflable matter is further purified by column chromatography followed by repeated mixed solvent crystallization to afford heptacosan-1,2,3-triol 2.</p>10aAcacia nilotica10adiester10apentacosane dioic acid10asaponification1 aChaubal, Rohini1 aTambe, Amruta1 aBiswas, Sujata1 aRojatkar, Supada1 aDeshpande, Vishnu1 aDeshpande, Nirinala  uhttps://library.ncl.res.in/content/isolation-new-straight-chain-compounds-acacia-nilotica-001513nas a2200229   4500008004100000022001400041245007900055210006900134260010300203300001200306490000700318520069000325653002701015653001401042653001301056100002001069700001901089700001901108700002301127700002301150856011001173       2008                        eng d  a0376-469900aMicrowave studies on synthesis of biologically active chalcone derivatives0 aMicrowave studies on synthesis of biologically active chalcone d  aANUSANDHAN BHAWAN, 2 RAFI MARG, NEW DELHI, 110001, INDIAbCOUNCIL SCIENTIFIC & INDUSTRIAL REScJUN  a927-9310 v473 a<p>Synthesis of pyrazole derivative using microwave energy has been carried out. The compound 1-[4-(2-hydroxy-ethoxy)-phenyl]-ethanone, is prepared from p-hydroxy-acetophenone and 2-chloro-ethanol. Chalcone derivative has been prepared by the condensation reaction of 1-[4-(2-hydroxy-ethoxy)-phenyl]- ethanone with 4-chlorobenzaldehyde. This chalcone. derivative cyclised with hydrazine hydrate and glacial acetic acid under microwave irradiation conditions give pyrazole derivative. These products have been characterized by detailed spectral analysis and have been screened for their antimicrobial activity, against Escherichia coli, Proteus vulgaris, and Salmonella typhimurium.</p>10aAntimicrobial activity10achalcones10aPyrazole1 aKatade, Sushama1 aPhalgune, Usha1 aBiswas, Sujata1 aWakharkar, Radhika1 aDeshpande, Nirmala  uhttps://library.ncl.res.in/content/microwave-studies-synthesis-biologically-active-chalcone-derivatives-0