Secondary metabolites of the phytopathogen Peronophythora litchii.

Two new metabolites, 4R*-hydroxy-3,5R*-dimethoxycyclohex-2-enone (1) and 2-hydroxy-N-(2-hydroxyphenyl)propionamide (2), were isolated from solid cultures of the phytopathogen Peronophythora litchii, along with 4-hydroxybenzyl alcohol (3) and methyl D-indole-3-lactate (4). Their structures were elucidated on the basis of spectroscopic and spectrometric data. These metabolites were not toxic to brine shrimps (LC50 > 500 microg/mL).