Secondary metabolites from the endophytic fungus Pestalotiopsis virgatula isolated from the mangrove plant Sonneratia caseolaris
文献类型： 外文期刊
作者： Roensberg, David 1 ; Debbab, Abdessamad 1 ; Mandi, Attila 2 ; Wray, Victor 3 ; Dai, Haofu 4 ; Kurtan, Tibor 2 ; Proksc 1 ;
作者机构： 1.Univ Dusseldorf, Inst Pharmazeut Biol & Biotechnol, D-40225 Dusseldorf, Germany
2.Univ Debrecen, Dept Organ Chem, H-4010 Debrecen, Hungary
3.Helmholtz Ctr Infect Res, D-38124 Braunschweig, Germany
4.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China
关键词： Sonneratia caseolaris;Endophytic fungi;Pestalotiopsis virgatula;α-Pyrones
期刊名称：TETRAHEDRON LETTERS （ 影响因子：2.415； 五年影响因子：2.036 ）
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年卷期：
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收录情况： SCI
摘要： Chromatographic analysis of an ethyl acetate extract of Pestalotiopsis virgatula rice cultures yielded four new α-pyrone derivatives, pestalotiopyrones I-L, and the new (6S,l'S,2'S)-hydroxypestalotin, in addition to three known compounds. The planar structures of the new compounds were elucidated on the basis of extensive NMR spectroscopic and mass spectrometric analyses. The absolute configurations of the new compounds were determined on the basis of biosynthetic considerations, coupling constants, and for pes-talotiopyrone L by TDDFT ECD calculations of solution conformers.
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