New tricycloalternarenes produced by the phytopathogenic fungus Alternaria alternata

• Published in: Phytochemistry (Oxford) Vol. 52; no. 4; pp. 593 - 599
• Main Authors: Nussbaum, Ralph-Peter, Günther, Wolfgang, Heinze, Stephan, Liebermann, Bernd
• Format: Journal Article
• Language: English
• Published: OXFORD Elsevier Ltd 01.10.1999; Elsevier
• Subjects: ACTG-toxins; Alternaria alternata; Biochemistry & Molecular Biology; Biological and medical sciences; Fundamental and applied biological sciences. Psychology; Fungal plant pathogens; Fungi Imperfecti; Life Sciences & Biomedicine; Phytopathology. Animal pests. Plant and forest protection; Phytotoxins; Plant Sciences; Science & Technology; Structural elucidation; Systematics. Morphology. Development cycle. Physiology; Tricycloalternarenes; Structural elucidation; ACTG-toxins; Alternaria alternata; Fungi Imperfecti; Tricycloalternarenes; Phytotoxins; fungi imperfecti; phytotoxins; HOST-SELECTIVE TOXINS; BROWN SPOT DISEASE; CITRI; MANDARINS; structural elucidation; tricycloalternarenes; PATHOTYPE; PHYTOTOXIN; Fungi; Terpenoid; Toxin; Plant pathogen; Molecular structure; Microorganism culture; Homology; Isolation; Thallophyta
• ISSN: 0031-9422; 1873-3700
• DOI: 10.1016/S0031-9422(99)00275-7

We succeeded in the isolation and structure elucidation of nine novel tricycloalternarenes from the culture filtrate of the phytopathogenic fungus Alternaria alternata, isolated from Brassica sinensis. Tricycloalternarenes are closely related to ACTG-toxins. Structural differences mainly occur in the isoprenoid side chain and the substitution pattern of the C-ring of the tricycloalternarenes.