Msc. Pedras et Cj. Biesenthal, Isolation, structure determination, and phytotoxicity of unusual dioxopiperazines from the phytopathogenic fungus Phoma lingam, PHYTOCHEM, 58(6), 2001, pp. 905-909
The isolation, chemical structure elucidation, and bioactivity of polanrazi
nes B-F, five new dioxopiperazines produced by isolates of the blackleg fun
gus [Phoma lingam, perfect stage Leptosphaeria maculans (Desm.) Ces. et de
Not.] originating from Poland, are reported. Polanrazines C and E showed mo
derate but selective toxicity, causing necrotic and chlorotic lesions (1-3
mm diameter) on brown mustard leaves. (C) 2001 Elsevier Science Ltd. All ri
ghts reserved.