Tricyclic Diterpenes from the Stem Bark of Azadirachta indica

I Ara; B S Siddiqui; S Faizi; S Siddiqui

doi:10.1055/s-2006-960891

Tricyclic Diterpenes from the Stem Bark of Azadirachta indica

Planta Med. 1990 Feb;56(1):84-6. doi: 10.1055/s-2006-960891.

Authors

I Ara¹, B S Siddiqui, S Faizi, S Siddiqui

Affiliation

¹ H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-32, Pakistan.

PMID: 17221373
DOI: 10.1055/s-2006-960891

Abstract

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.