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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.

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Journal Article

Journal Article

New acetylated flavone C-glycosides from Iris lactea  [2017]

Andrei K.; Whaley; Weaam; Ebrahim; et al.

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Chemical investigation of the aerial parts of Iris lactea afforded three new flavone C-glycosides including 4‴-O-acetyl-embinin (1), 2‴,4‴-O-diacetyl-embinin (2) and 6″,4‴-O-diacetyl-embinin (3) along with the known analogue embinin (4). Their structures were elucidated by 1D and 2D NMR spectroscopic analysis as well as by HRESIMS data. The sugars were characterized following acid hydrolysis of the respective glycosides and TLC analysis compared to known standards. Duplicated signals can be observed in the NMR spectra, indicating the presence of rotamers caused by rotational hindrance around the glycosyl-flavone CC linkage. All isolated compounds were tested for their antimicrobial and cytotoxic activities but found to be inactive.
From the journal
Tetrahedron letters
ISSN : 0040-4039

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2017
Volume:
58 (3
Extent:
2171-2173
Publisher:
Elsevier Ltd
All titles:
"New acetylated flavone C-glycosides from Iris lactea"@eng
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2017
Volume:
58 (3
Extent:
2171-2173
Publisher:
Elsevier Ltd
All titles:
"New acetylated flavone C-glycosides from Iris lactea"@eng