Naphthoquinone compounds derivable from extract of plants of the genus Calceolaria

摘要

1. A compound of the General formula I, Figure 1 where r represents a hydrogen Atom or a hydroxyl group or a Group etanoiloxi, for use as a pesticide. 3.An extract of a kind Calceolaria for u - so as a pesticide, characterized in that it comprises a compound as defined in claim 1. 4.An extract according to claim 3, which has been obtained by extracting shredded Plant material a Calceolaria species with a solvent.