Tagetolone and Tagetenolone: Two Phytotoxic Polyketides from Alternaria tagetica
摘要:
Two new phytotoxic polyketides, tagetolone (1) and tagetenolone (2), in addition to tyrosol and p-hydroxybenzoic acid, have been isolated from the organic crude extract of culture filtrates from the fungal pathogen Alternaria tagetica. Complete characterization of all structures was carried out following a careful analysis of their spectroscopic data (IR, MS, H-1 and C-13 NMr, and 2D NMR experiments).