http://nopr.niscair.res.in/handle/123456789/317 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/701 Title: Constituents of high altitude Himalayan herbs. part XX. A C-19 diterpenoid alkaloid from Aconitum balfourii <br/> <br/>Authors: Khetwal, K S <br/> <br/>Abstract: A C-19 Diterpenoid alkaloid, 14-benzoylpseudaconine 1 has been isolated from the aerial parts of Aconitum balfourii and identified by MS, ¹H , ¹³C NMR (SFORD and DEPT) as well as by chemical analysis. <br/> <br/>Page(s): 1364-1366 Sun, 29 Jul 2007 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/699 Title: Facile and efficient synthesis of 1,8-naphthyridinyl phthalazine-1,4-diones under microwave irradiation <br/> <br/>Authors: Mogilaiah, K; Rani, J Uma; Babu, H Sharath <br/> <br/>Abstract: Microwave irradiation of 3-aryl-2-hydrazino-1,8-naphthyridines 1 with phthalic anhydride 2 in the presence of a catalytic amount of DMF provides a fast, efficient and simple method for the synthesis of 2-(3-aryl-1,8-naphthyridin-2-yl)-1,2,3,4-tetrahydrophthalazine-1,4-diones 3 in excellent yields. <br/> <br/>Page(s): 1361-1363 Sun, 29 Jul 2007 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/698 Title: Essential oil composition of Gliricidia sepium (Leguminosae) leaves and flowers <br/> <br/>Authors: Kaniampady, Molykutty M; Arif, M Muhammed; Jirovetz, L; Shafi, P Mohamed <br/> <br/>Abstract: Forty two known compounds have been found in the leaves and flowers of Gliricidia sepium. Of these, sixteen have been identified and quantified from the leaf essential oil by GC and twenty six have been identified and quantified from the flower essential oil by GC-MS analysis. The major compounds of the leaf oil are found to be propyleneglycol (25.1%), coumarin (18.2%), (Z)-3-hexenol] (17.7%), β-farnesene (14.2%) and (E)-2-hexenol (6.5%); and coumarin (43.1%), hydroquinone (21.6%) and myrtenol (12.7%) in the flower oil. In the light of the toxicity of coumarin and hydroquinone, this finding is a warning signal against the use of the leaves as fumigant against mosquitoes and the flower as a food material. <br/> <br/>Page(s): 1359-1360 Sun, 29 Jul 2007 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/697 Title: Pyrrolidine catalyzed regioselective and diastereoselective direct aldol reaction in water <br/> <br/>Authors: Mahajan, Dinesh; Chimni, Swapandeep Singh <br/> <br/>Abstract: Pyrrolidine catalyzed direct aldol reaction of methyl ketones other than acetone with 4-nitrobenzaldehyde in water affords linear aldol addition product arising from the selective attack of the unsubstituted carbon of the unsymmetrical ketone. The present methodology provides an experimentally simple and green process for regioselective synthesis of -hydroxyketones in water. <br/> <br/>Page(s): 1355-1358 Sun, 29 Jul 2007 22:58:59 GMT