Sorokiniol: a new enzymes inhibitory metabolite from fungal endophyte Bipolaris sorokiniana LK12Reportar como inadecuado

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BMC Microbiology

, 16:103

Applied microbiology


BackgroundMedicinal plants harboring endophytic fungi could carry significant potential for producing bioactive secondary metabolites. Endophytic fungi serve as alternate source of interesting compounds in their natural and modified synthetic forms to treat different diseases. In this regard, endophytic microflora associated with alkaloid-rich medicinal plants Rhazya stricta is least known.

ResultsWe isolated one new bioactive compound sorokiniol 1 along with two known cyclic peptides BZR-cotoxin I 2 and BZR-cotoxin IV 3 from fungal endophyte Bipolaris sorokiniana LK12. The structures of the isolated new and known compounds were elucidated through spectroscopic data, including 1D and 2D NMR H, C, HSQC, HMBC, and NOESY, mass, and UV. The known peptides 2–3 were characterized by ESI-MS, MS-MS, and by comparing the NMR data with the literature. The isolated metabolites were assayed for their role against enzyme inhibition. Compound 1 was significantly inhibitory towards acetyl cholinestrase while the other compounds 2–3 had moderate anti-lipid peroxidation and urease activities.

ConclusionThe present results suggest that the endophytic microorganism associated with indigenously important medicinal plants can offer a rich source of biologically active chemical constituents which could help in discovering enzyme inhibitory lead drugs.

KeywordsEndophytic fungi Secondary metabolites Bipolaris sorokiniana LK12 Cyclic peptides Structure elucidation Enzyme inhibition and antioxidant Electronic supplementary materialThe online version of this article doi:10.1186-s12866-016-0722-7 contains supplementary material, which is available to authorized users.

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Autor: Liaqat Ali - Abdul Latif Khan - Javid Hussain - Ahmed Al-Harrasi - Muhammad Waqas - Sang-Mo Kang - Ahmed Al-Rawahi - In-Ju


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