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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

Journal Article

Journal Article

Diterpenes from the leaf exudate of Psiadia punctulata  [1997]

Midiwo, J.O.; Owuor, F.A.O.; Juma, B.F.; Waterman, P.G.;

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Two known diterpenes, (ent)-2-oxokaur-16-en-18,19-diol (psiadin) and (ent)-kaur-16-en-2alpha,18,19-triol, and three novel diterpenes, (ent)-16beta,17-dihydroxykauran-20-oic acid, 2-oxotrachyloban-18,19-diol and trachyloban-2beta,6beta,19-triol have been isolated from the leaf exudate of Psiadia punctulata. The structures of the diterpenes was established on the basis of spectroscopic analysis and previously published data on the known compounds.

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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
45
Issue:
1
Start Page:
117
End Page:
120
All titles:
" Diterpenes from the leaf exudate of Psiadia punctulata "
Other:
" Includes references "

From the journal

Phytochemistry

ISSN : 0031-9422