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A new cyclohexapeptide, penitropeptide and a new polyketide, penitropone from the endophytic fungus Penicillium tropicum

文献类型： 外文期刊

作者： Zeng, Yanbo 1 ; Wang, Hao 2 ; Kamdem, Ramsay S. T. 2 ; Orfali, Raha S. 4 ; Dai, Haofu 1 ; Makhloufi, Gamall 5 ; Janiak 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Minist Agr, Key Lab Biol & Genet Resources Trop Crops, Haikou 571101, Peoples R China

2.Univ Dusseldorf, Inst Pharmaceut Biol & Biotechnol, Univ Str 1, D-40225 Dusseldorf, Germany

3.Univ Yaounde I, Higher Teachers Training Coll, Dept Organ Chem, POB 47, Yaounde, Cameroon

4.King Saud Univ, Fac Pharm, Dept Pharmacognosy, Riyadh, Saudi Arabia

5.Univ Dusseldorf, Inst Inorgan & Struct Chem, Univ Str 1, D-40225 Dusseldorf, Germany

6.Univ Dusseldorf, Inst I

关键词： Penicillium tropicum;Cyclohexapeptide;Polyketide;X-ray diffraction

期刊名称：TETRAHEDRON LETTERS （ 影响因子：2.415； 五年影响因子：2.036 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： The first chemical investigation of the endophytic fungus Penicillium tropicum isolated from leaves of Sapium ellipticum afforded a new cyclohexapeptide, penitropeptide (1), and a new polyketide, penitropone (2), in addition to two known compounds, 6-hydroxy-8-methoxy-3S,5-dimethyl-3,4-isocoumarin (3) and adametizine B (4). Their structures were unambiguously elucidated on the basis of 1D and 2D NMR spectroscopy as well as mass spectrometry, and by comparison with the literature. The absolute configurations of these two new compounds 1 and 2 were determined by Marfey's method and X-ray single crystal diffraction, respectively. All isolated compounds were tested for their cytotoxic and antibacterial activities. However, none of them showed significant activity. (C) 2016 Elsevier Ltd. All rights reserved.

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