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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Two new α-pyrone derivatives from an endolichenic fungus Tolypocladium sp
Chu-Hong Hu1, Yan-Hui Zhou1, Fei Xie1
1a Department of Natural Products Chemistry, Key Lab of Chemical Biology of Ministry of Education , Shandong University , Jinan 250012 , China.
Abstract:
Two new α-pyrone derivatives, tolypocladones A (1) and B (2), together with five known compounds were isolated from an endolichenic fungus Tolypocladium sp. (4259a). The structures of all the compounds were determined by analysis of their MS and NMR data. Among them, compound 1 was an enantiomeric mixture and the configuration was established by single-crystal X-ray diffraction analysis using Cu-Kα radiation. Also, this is the first report of the presence of compound 3 (glycine, N-(2,3-dihydroxybenzoyl)-methyl ester) and compound 4 (2H-pyran-2-one, 4-methoxy-6-(1,3-pentadienyl)) as natural products.
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Fungal Group Zygomycota
Fungal Phylum Basidiomycota
Fungal Phylum Ascomycota

