Non-terpenoidal constituents of Azadirachta indica root bark

International Center for Chemical and Biological Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan E-mail: siddiqui_bina@yahoo.com Fax : 92-21-99261713-14 Manuscript received 01July 2013, accepted 02 July 2013 A new steroid named as margocidin (1) has been isolated from the neutral fraction of the methylene chloride extract of neem roots along with the known 3β-hydroxy stigmast-5-en-7-one (2) and ferula aldehyde (3) hitherto unreported from any of the various parts of neem tree. The structures of these compounds have been determined through chemical and spectroscopic methods. The fatty acid components of petrol soluble fraction were also identified through GC-MS. &nbsp