http://nopr.niscpr.res.in/handle/123456789/22264 2026-10-12T21:44:03Z http://nopr.niscpr.res.in/handle/123456789/22586 Title: A new anthraquinone glycoside from the roots of <i>Plumbago zeylanica</i> Authors: Gupta, Aditi; Siddiqui, I R; Singh, J Abstract: Isolation of a new anthraquinone, 1-hydroxy-3-methyl-6-methoxyanthraquinone-8-<i>O</i>-<i>β</i>-<img src='http://www.niscair.res.in/jinfo/smaller.gif' border=0>-xylopyranoide <b>1 </b>along with naphthoquinones, droserone <b>2</b> and zeylanone <b>3</b> is reported from roots of the <i>Plumbago zeylanica. </i>Structures of the compounds have been elucidated by spectroscopic and chemical studies. Page(s): 796-798 2000-10-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/22585 Title: Synthesis of (<img src='/image/spc_char/plus_min.gif' border=0>)-7,8- and 5,6-dimethyl-2-(2-hydroxyisopropyl) tetralins Authors: Kadam, A J; Desai, U V; Mane, R B Abstract: 7,8-Dimethyl-1-tetralone <b>4</b> on sodium borohydride reduction followed by Vilsmeier-Haack reaction furnishes 7,8-dimethyl-3,4-dihydro-2-naphthaldehyde <b>10</b>. Reduction of <b>10</b> followed by oxidation with Jones reagent yields 7,8-dimethyl-1,2,3,4-tetrahydro-2-naphthoic acid <b>12</b> which on treatment with excess of methyllithium affords 7,8-dimethyl-2-(2 -hydroxyisopropyl) tetralin 2. 5,6-dimethyl-1-tetralone <b>5</b> is converted into the 5,6-dimethyl-2-(2-hydroxyisopropyl)tetralin <b>3</b> by following similar set of reactions as described above. Page(s): 752-756 2000-10-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/22561 Title: Screening of natural products for new leads as inhibitors of IҡBα kinase: 16-Oxo-cleroda- 3,13<i>E</i>-dien-15-oic acid from <i>Polyalthia longifolia </i>of <i>Annonaceae </i>family Authors: Ramakrishna, NV S; Kumar, E K S Vijaya; Jain, A K; Kalakoti, B S; Gupte, R D; Panicker, R B; Vadlamudi, R V S V Abstract: 16-Oxo-cleroda-3,13<i>E</i>-dien-15-oic acid¹ <b>1</b> has been isolated from pet. ether extract of twigs of <i>Polyalthia longifolia </i>by bioactivity monitored purification. <b>1</b> shows good IҡBα kinase inhibitory activity with an IC₅₀ of 14.9μ<i>M</i>· Page(s): 801-802 2000-10-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/22560 Title: Chemical investigation of <i>Pogostemon parviflorus </i>Benth: Part I Authors: Biren, K H; Khaidem, I S Abstract: A new dinortriterpenoid 25-carboethoxypogostemonol <b>1</b> has been isolated from <i>Pogostemon parviflorus </i>Benth. Page(s): 799-800 2000-10-01T00:00:00Z