Document Detail

Diterpenoids from Neoboutonia glabrescens (Euphorbiaceae).
MedLine Citation:
PMID:  12943778     Owner:  NLM     Status:  MEDLINE    
Glabrescin, a daphnane diterpenoid, neoboutonin, a degraded diterpenoid with a novel skeleton, and neoglabrescins A and B, two rhamnofolane derivatives, have been isolated from the stem bark of Neoboutonia glabrescens Prain (Euphorbiaceae), together with the known tigliane derivative, baliospermin, and the known daphnane, montanin. Other constituents include squalene, 3-acetylaleuritolic acid, oleanolic acid and sitosterol, and the phenolic compounds 9-methoxy-1,7-dimethylphenanthrene and 2,3,8-tri-O-methylellagic acid. The structures were assigned on the basis of spectral studies and comparison with published literature data. The structures of neoglabrescins A and B were derived for their acetylated derivatives and, in the case of neoglabrescin A, confirmed by X-ray crystallographic analysis.
Alembert T Tchinda; Apollinaire Tsopmo; Mathieu Tene; Pierre Kamnaing; David Ngnokam; Pierre Tane; Johnson F Ayafor; Joseph D Connolly; Louis J Farrugia
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Phytochemistry     Volume:  64     ISSN:  0031-9422     ISO Abbreviation:  Phytochemistry     Publication Date:  2003 Sep 
Date Detail:
Created Date:  2003-08-28     Completed Date:  2004-01-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0151434     Medline TA:  Phytochemistry     Country:  United States    
Other Details:
Languages:  eng     Pagination:  575-81     Citation Subset:  IM    
Department of Chemistry, University of Dschang, Box 67, Dschang, Cameroon.
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MeSH Terms
Crystallography, X-Ray
Diterpenes / chemistry,  isolation & purification*
Euphorbiaceae / chemistry*
Models, Molecular
Molecular Structure
Nuclear Magnetic Resonance, Biomolecular
Plant Bark / chemistry
Plant Stems / chemistry
Reg. No./Substance:

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