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Natural Product Research
Formerly Natural Product Letters
Volume 30, 2016 - Issue 24
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Research Articles

A new macrolactin antibiotic from deep sea-derived bacteria Bacillus subtilis B5

, , , , , , & show all
Pages 2777-2782 | Received 05 Nov 2015, Accepted 09 Feb 2016, Published online: 13 Apr 2016
 

Abstract

A new macrolactin derivate, 7-O-2′E-butenoyl macrolactin A (1), together with three known macrolactin compounds, macrolactin A (2), 7-O-malonyl macrolactin A (3) and 7-O-succinyl macrolactin A (4), was isolated from the bacterial strain Bacillus subtilis B5, which was isolated from the 3000 m deep sea sediment of the Southwest Pacific Ocean. The structures of the new compounds were assigned by spectroscopic methods including 1-D/2-D NMR and MS analysis techniques. Compounds 1 and 2 demonstrated antifungal activities against tea pathogenic fungi Pestalotiopsis theae and Colletotrichum gloeosporioides.

Funding

The project was supported by the National Natural Science Foundation of China [grant number 81302652]; the Key Science and Technology Project of Fujian Province, China [grant number 2014Y0068], [grant number 2013N0019]; the Science and Technology Program of Xiamen, Fujian Province, China [grant number 3502Z20143001], [grant number 3502Z20142009]; the South Center for Marine Research [grant number 14GYY023NF23], [grant number 13GZP002NF08]; China Ocean Mineral Resources R&D Association [grant number COMRA DY125-15-T-07].

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