期刊
CARBOHYDRATE RESEARCH
卷 471, 期 -, 页码 13-18出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2018.10.009
关键词
Pantoea ananatis; Glycolipid; Macrolactone; NMR analysis; Biosurfactant
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2016-04950, RGPIN-2015-03931]
- Fonds de recherche du Quebec - Sante (FRQS) Research Scholars Junior 2 Career Award
The bacterium Pantoea ananatis was reported to produce glycolipid biosurfactants of unknown structures. Herein, we present the isolation and structural determination of ananatoside A, the main congener of a new family of 15-membered macrodilactone-containing glucolipids. The structure of ananatoside A was elucidated via chemical degradation and spectroscopic methods including 1D/2D NMR analysis, tandem MS/MS, GC-MS, HR-ESI-TOF-MS, MALDI-TOF-MS, and polarimetry. Computational methods were used to predict the most abundant conformers of ananatoside A.
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