Abstract
Two new cyclopeptides, mullinamides A [cyclo-(-L-Gly-L-Glu-L-Val-L-Ile-L- Pro-)] and B [cyclo-(-L-Glu-L-Met-L-Pro-)] were isolated from the crude extract of terrestrial Streptomyces sp. RM-27-46 along with the three known cyclopeptides surugamide A [cyclo-(-L-Ile-D-Ile-L-Lys-L-Ile-D-Phe-D-Leu-L-Ile-D- Ala-)], cyclo-(-L-Pro-L-Phe-) and cyclo-(-L-Pro-L-Leu-). The structures of the new compounds were elucidated by the cumulative analyses of NMR spectroscopy and HRMS. Although mullinamides A and B displayed no appreciable antimicrobial/fungal activity or cytotoxicity, this study highlights the first reported antibacterial activity of surugamide A.
Original language | English |
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Pages (from-to) | 571-575 |
Number of pages | 5 |
Journal | Journal of Antibiotics |
Volume | 67 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2014 |
Bibliographical note
Funding Information:This work was supported in part by the University of Kentucky College of Pharmacy, the University of Kentucky Markey Cancer Center and the National Center for Advancing Translational Sciences (UL1TR000117).
Funding
This work was supported in part by the University of Kentucky College of Pharmacy, the University of Kentucky Markey Cancer Center and the National Center for Advancing Translational Sciences (UL1TR000117).
Funders | Funder number |
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University of Kentucky | |
National Center for Advancing Translational Sciences (NCATS) | UL1TR000117 |
University of Kentucky Markey Cancer Center |
Keywords
- antibiotic
- bioprospecting
- cyclopeptide
- natural product
- pharmacognosy
- surugamide
ASJC Scopus subject areas
- Pharmacology
- Drug Discovery