Components of the heartwood of dalbergia larifolia, roxb.

✍ Scribed by M.M. Rao; T.R. Seshadri

• Book ID: 104241803
• Publisher: Elsevier Science
• Year: 1963
• Tongue: French
• Weight: 203 KB
• Volume: 4
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)90609-4

✦ Synopsis

Ue have earlier reported1 the isolation of latifolin from the light petroleum extract of the heartwood of Dalberaia Ilatlfolia, and discussed the constitution of its dimethyl ether. Latifolin, m.p. 122-X9', a colouriess crystalline compound, had the molecular composition.Cl$1304) with two methoxyls, two hydroxyls and an ethylenic double bond. It was optically active and its dimethyl ether underwent isomeric change by;means of alkali to yield b latifolin-O-dimethyl ether (II). Oxidation of a-dimethyl latifolin with neutral potassium permanganate yielded QEtbP-methoxybensoic acid. Based on its properties and reactions, 0-dimethyl latifolin was formulated as in I. This was fully supported by its NMR spectrum and also by a synthesis of &Q latifolin-C-dimethyl ether. Results of further work that has been done so far are given here in view of the recent communication by Eytonet.' on the -' Balakrishna, Rao and Seshadri, Tetrw (under publication).