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Structure determination of new steroids from Abutilon pakistanicum by NMR techniques
Author(s) -
Hussain Munawar,
Zahra Durey Nayab,
Hussain S. M. Shakil,
Ahmed Ejaz,
Ahmad Ijaz,
Malik Abdul,
Ahmed Zaheer
Publication year - 2008
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2139
Subject(s) - abutilon , chemistry , stereochemistry , carbon 13 nmr , botany , weed , biology
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.
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