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Paper | Regular issue | Vol 29, No. 1, 1989, pp.87-96
Published online, 1st January, 1970
DOI: 10.3987/COM-88-4683
Tetranortriterpemoids from Azadirachta Indica A, Juss (Meliaceae)

Salimuzzaman Siddiqui,* Bina Shaheen Siddiqui, Tariq Mahmood, and Shaheen Faizi

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


Nimbocinolide, a new tetranortriterpenoid has been isolated from the acidic fraction of fresh, undried leaves of A.indica (neem) and its structure was established as 21, ,23-epoxy-1,14,20-apoeul (apotirucalla)-trien-3,21-dione-7α,11α,12α,23x-tetraol-11-(2’-hydroxy-2’-methyl) propio-nate-7-acetate (I), through chemical and spectral studies.