4α-Methyl-24β-ethyl-5α-cholesta-14,25-dien-3β-ol and 24β-ethylcholesta-5, 9(11), 22E-trien-3β-ol, sterols from Clerodendrum inerme

From the aerial parts of Clerodendrum inerme, two new sterols (4α-methyl-24β-ethyl-5α-cholesta-14, 25-dien-3β-ol and 24β-ethylcholesta-5, 9(11), 22E-trien-3β-ol) and a new aliphatic ketone (11-pentacosanone) were isolated together with another known aliphatic ketone (6-nonacosanone) and a diterpene...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 2003, Vol.63 (4), p.415-420
Main Authors: Pandey, Richa, Verma, Ram K., Singh, Subhash C., Gupta, Madan M.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chemical constitution
Clerodendrum inerme
Fundamental and applied biological sciences. Psychology
Plant physiology and development
Sterols
Verbenaceae
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Summary:From the aerial parts of Clerodendrum inerme, two new sterols (4α-methyl-24β-ethyl-5α-cholesta-14, 25-dien-3β-ol and 24β-ethylcholesta-5, 9(11), 22E-trien-3β-ol) and a new aliphatic ketone (11-pentacosanone) were isolated together with another known aliphatic ketone (6-nonacosanone) and a diterpene (clerodermic acid). The structure elucidations were based on analyses of physical and spectroscopic data. From the aerial parts of Clerodendrum inerme, two new sterols, 4α-methyl-24β-ethyl-5α-cholesta-14, 25-dien-3β-ol ( 1a) and 24β-ethylcholesta 5, 9(11), 22E-trien-3β-ol ( 2a) and a new aliphatic ketone 11-pentacosanone were isolated together with another known aliphatic ketone, 6-nonacosanone and a diterpene, clerodermic acid.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(03)00146-8