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Xu ZL, Cao SM, Qin YY, Mo TX, Li BC, Qin XY, Huang XS, Li J, Yang RY. Chemical Constituents of the Endophytic Fungus Penicillium macrosclerotiorum from Sophora tonkinensis. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03409-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kamel RA, Abdel-Razek AS, Hamed A, Ibrahim RR, Stammler HG, Frese M, Sewald N, Shaaban M. Isoshamixanthone: a new pyrano xanthone from endophytic Aspergillus sp. ASCLA and absolute configuration of epiisoshamixanthone. Nat Prod Res 2019; 34:1080-1090. [PMID: 30663363 DOI: 10.1080/14786419.2018.1548458] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Isoshamixanthone (1), a new stereoisomeric pyrano xanthone together with the previously known fungal metabolites, epiisoshamixanthone (2), sterigmatocystin (3), arugosin C (4), norlichexanthone (5), diorcinol (6), ergosterol and methyllinoleate, were obtained from the endophytic fungal strain Aspergillus sp. ASCLA isolated from leaf tissues of the medicinal plant Callistemon subulatus. The chemical structure of the new xanthone (1) was elucidated by extensive 1D, 2D NMR, and ESI HR mass measurements, and by comparison with literature data. The constitutions and absolute configurations of 1 and epiisoshamixanthone (2) were additionally confirmed by X-ray crystallography. Compounds 1,2 were evaluated for their potential anticancer activity using the human cervix carcinoma cell line (KB-3-1). The antimicrobial activities of the fungal extract and compounds 1,2 were studied using a panel of pathogenic microorganisms as well.
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Affiliation(s)
- Reem A Kamel
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Pharmacognosy Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo, Egypt
| | - Ahmed S Abdel-Razek
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Microbial Chemistry Department, Genetic Engineering and Biotechnology Research Division, National Research Centre, Dokki-Giza, Egypt
| | - Abdelaaty Hamed
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City-Cairo, Egypt
| | - Reham R Ibrahim
- Pharmacognosy Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo, Egypt
| | - Hans Georg Stammler
- Inorganic and Structural Chemistry, Bielefeld University, Department of Chemistry, Bielefeld, Germany
| | - Marcel Frese
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany
| | - Mohamed Shaaban
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany.,Chemistry of Natural Compounds Department, Division of Pharmaceutical Industries, National Research Centre, Dokki-Giza, Egypt
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