Structure determination of new steroids from Abutilon pakistanicum by NMR techniques

Two new steroids provisionally named as pakisteroid‐A (1) and pakisteroid‐B (2) have been isolated in crystalline form from Abutilon pakistanicum. Their structures have been assigned as 3‐O‐β‐D‐glucopyranosyl‐stigmasta‐5,11(12)‐diene (1) and 24β‐ethylcholesta‐5, 9(11), 22E‐trien‐3β‐benzoate (2), res...

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Published in:Magnetic resonance in chemistry 2008-03, Vol.46 (3), p.274-277
Main Authors: Hussain, Munawar, Zahra, Durey Nayab, Hussain, S. M. Shakil, Ahmed, Ejaz, Ahmad, Ijaz, Malik, Abdul, Ahmed, Zaheer
Format: Article
Language:English
Subjects:
1D/2D NMR
Abutilon pakistanicum
Carbon Isotopes
Magnetic Resonance Spectroscopy - methods
Magnetic Resonance Spectroscopy - standards
Malvaceae
Malvaceae - chemistry
Molecular Structure
NMR
Pakistan
Plant Components, Aerial - chemistry
Protons
steroids
Steroids - chemistry
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Summary:Two new steroids provisionally named as pakisteroid‐A (1) and pakisteroid‐B (2) have been isolated in crystalline form from Abutilon pakistanicum. Their structures have been assigned as 3‐O‐β‐D‐glucopyranosyl‐stigmasta‐5,11(12)‐diene (1) and 24β‐ethylcholesta‐5, 9(11), 22E‐trien‐3β‐benzoate (2), respectively through extensive NMR studies. Copyright © 2008 John Wiley & Sons, Ltd.
ISSN:0749-1581
1097-458X
DOI:10.1002/mrc.2139