Planta Med 1990; 56(1): 84-86
DOI: 10.1055/s-2006-960891

© Georg Thieme Verlag Stuttgart · New York

Tricyclic Diterpenes from the Stem Bark of Azadirachta indica

Iffat Ara, Bina S. Siddiqui, Shaheen Faizi, Salimuzzaman Siddiqui
  • H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-32, Pakistan
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Publication History


Publication Date:
05 January 2007 (online)


Two new diterpenoids, margosone and margosolone, have been isolated from the stem bark of Azadirachta indica A. Juss (neem) and their structures established as 12,13-dihydroxy-14-isoporpylpodocarpa-8,11,13-trien-7-one and 13-hydroxy-12-methoxypodocarpa-8,11,13-trien-7-one, respectively, through chemical and spectroscopic studies.