000 a
999 _c17368
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040 _aAIKTC-KRRC
_cAIKTC-KRRC
100 _915193
_a Abdou, Randa
245 _aBioguided Isolation of Alternariol Derivatives fromFicus-derived Endophyte Alternaria alternata
250 _aVol.56(2), Apr-June
260 _aKarnataka
_bAssociation of Pharmaceutical Teachers of India (APTI)
_c2022
300 _a497-502p.
520 _aBackground: Endophytes are a rich source of bioactive natural products and suggested to contribute to the biological or defense activities of their host plants. Following our research on the discovery of bioactive metabolites from endophytes, Alternaria alternata was isolated from the leaves of Ficus carica L. fam Moraceae. Materials and Methods: Large scale cultivation of the endophytic strain was carried out and the obtained extract was subjected to preliminary screening of antifungal and cytotoxic activities. Results: Promising antifungal and cytotoxic activities were obtained for the extract. Bio-guided fractionation resulted in the isolation and identification of four alternariol derivatives (alternariol, alternariol-5-O-sulphate, alternariol-5-O-methyl ether, alternariol-5-O-methyl ether-4`-O-sulphate). The isolated compounds were tested for antifungal and cytotoxic effects. Results revealed highest antifungal activity for alternariol against A. terreus (MIC= 2.64 μg mL -1 ) and F. oxysporum (MIC= 36 μg mL -1 ) while alternariol-5-O-methyl ether exhibited the highest cytotoxicity against K-562 (CC50 = 3.72 μg mL-1 ) and HUVEC (CC50 = 2.06 μg mL-1 ) cell lines. Conclusion: All alternariol derivatives showed potent cytotoxic and antifungal activities against A. terreus suggesting the contribution of this endophyte in the known antimicrobial and anticancer activities of the host plant.
650 0 _94639
_aPHARMACEUTICS
700 _917672
_aAttia, Gouda H.
773 0 _tIndian journal of pharmaceutical education and research
_dBengluru Association of Pharmaceutical Teachers of India (APTI)
_x0019-5464
856 _uhttps://www.ijper.org/sites/default/files/IndJPhaEdRes-56-2-497.pdf
_yClick here
942 _2ddc
_cAR