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Dergiler / Turkish Journal of Chemistry / 2009 / Cilt: 33 - Sayı: 4

Pregnane steroids from the heartwood of Azadirachta indica

Bina Shaheen SIDDIQUI,Syed Kashif ALI,Syed Tariq ALI,Fayyaz AHMED

Sayfa
501–506
DOI
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Özet

The heartwood of Azadirachta indica (Meliaceae) yielded a new steroid (2a, 3b, 4b-trihydroxypregnan-16-one) and 2 known steroids (2b, 3b, 4b-trihydroxypregnan-16-one and 2a, 3a, 4b-trihydroxypregnan-16-one). Their structures were elucidated through spectral studies including 2D NMR (COSY, NOESY, J-resolved, HMQC, HMBC) experiments.

Abstract

The heartwood of Azadirachta indica (Meliaceae) yielded a new steroid (2a, 3b, 4b-trihydroxypregnan-16-one) and 2 known steroids (2b, 3b, 4b-trihydroxypregnan-16-one and 2a, 3a, 4b-trihydroxypregnan-16-one). Their structures were elucidated through spectral studies including 2D NMR (COSY, NOESY, J-resolved, HMQC, HMBC) experiments.

Anahtar kelimeler: Azadirachta indica, Meliaceae, heartwood, steroids, 2a, 3b, 4b-trihydroxypregnan-16-one, 2b, 3b, 4b -trihydroxypregnan-16-one, 2a, 3a, 4b-trihydroxypregnan-16-one.