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Paper | Regular issue | Vol 29, No. 4, 1989, pp.729-735
Published online, 1st January, 1970
DOI: 10.3987/COM-89-4857
Isolation of Meliacin CInnamates from the Root Bark of Azadiracha indica A. Juss (Meliaceae)

Iffat Ara, Bina Shaheen Siddiqui, Shaheen Faizi, and Salimuzzaman Siddiqui

*H. E. J. Postgraduate Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan

Abstract

A new tetranortriterpenoid named as nimbolicin has been isolated from the neutral fraction of root bark of Azadirachta indica A.Juss (neem) besides nimbolin B previously reported from the trunk wood. The structure elucidation of nimbolicin through chemical and spectroscopic methods along with the hitherto unreported 13C-nmr and 2D spectral studies (NOESY, COSY, heterocosy) of nimbolin B form the subject of present communication.