Citation:
Peng Zhang, Xiao-Ming Li, Jia-Ning Wanga, Xin Li, Bin-Gui Wang. Prenylated indole alkaloids from the marine-derived fungus Paecilomyces variotii[J]. Chinese Chemical Letters,
;2015, 26(3): 313-316.
doi:
10.1016/j.cclet.2014.11.020
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Two new prenylated indole alkaloids, namely, dihydrocarneamide A (1) and iso-notoamide B (2), were isolated from the marine-derived endophytic fungus Paecilomyces variotii EN-291. The structures of these metabolites were determined based on comprehensive spectral analysis, together with chiral HPLC analysis of the acidic hydrolysates. Unlike other prenylated indole alkaloids such as asperparalines, notoamides, and versicolamides, compounds 1 and 2 are the rare examples of C-5 prenylation, forming the fused dimethyldihydropyran ring at C-5 and C-6 of the indole ring. The cytotoxic activity of the isolated compounds was evaluated.
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