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  • Title: Terphenyl Derivatives from Allantophomopsis lycopodina.
    Author: Andernach L, Sandjo LP, Liermann JC, Schlämann R, Richter C, Ferner JP, Schwalbe H, Schüffler A, Thines E, Opatz T.
    Journal: J Nat Prod; 2016 Oct 28; 79(10):2718-2725. PubMed ID: 27731998.
    Abstract:
    Three secondary fungal metabolites 1-3 with a benzo[b]naphtho[2,1-d]furan skeleton were isolated from submerged cultures of the ascomycete Allantophomopsis lycopodina. The NMR-based structure elucidation was challenging due to a low H/C ratio of only 0.64 and 0.68, respectively. NMR measurements in two different solvents and the use of NMR experiments such as HSQC-TOCSY and LR-HSQMBC proved to be helpful in this respect. The proposed structures obtained from the comprehensive analysis of the NMR data were verified by comparison of recorded and computed NMR chemical shifts from quantum chemical calculations of several constitutional isomers and were further analyzed with the aid of the DP4 and DP4+ probabilities.
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