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Natural Product Research
Formerly Natural Product Letters
Volume 26, 2012 - Issue 9
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Research Articles

Two new 14-membered cyclopeptide alkaloids from Zizyphus xylopyra

Manoj B. Pandey Department of Chemistry, S.G.R. Post Graduate College, Purvanchal University, Dobhi 222149, Jaunpur, India
,
Sarita Singh Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
,
Meenakshi Malhotra Department of Biomedical Engineering, Faculty of Medicine, Duff Medical Building, 3775 University Street, McGill University, Montréal, Quebec H3A 2B4, Canada
,
Vidya B. Pandey Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
&
Tryambak D. Singh Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, IndiaCorrespondence[email protected] [email protected]
Pages 836-841 | Received 30 Aug 2010, Accepted 30 Jan 2011, Published online: 14 Oct 2011
 
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Abstract

The phytochemical investigation of the bark of Zizyphus xylopyra resulted in the isolation of two new 14-membered ring cyclopeptide alkaloids, xylopyrine-G and xylopyrine H. Their structures have been established by chemical and spectral evidences.

Acknowledgements

The authors thank Prof G. Rücker, ex-Director, Pharmazentisches Institut der Universität Bonn, Germany for the spectral analysis.

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