The trunk wood of the Amazonian Aniba ferra Kubitzki contains, besides three benzyl benzoates (la, b, c) and dillapiol (2), four hydrobenzofuranoid and two bicycle [3.2.1] octanoid neolignans. The former comprise two representatives (3a, b) of the novel ferrearin- (3a-allyl-2-aryl-7a-hydroxy-3-methyl-3a,4,7,7atetrahydro-7-oxobenzofuran) type, and two further representatives (4a, b) of the known porosin- (3a-allyl-2 aryl-.5-methoxy-3a,4,5,6-tetrahydro-6-oxobenzofuran) type. The latter comprises a new representative (5a) of the known canellin- (1-allyl-6-aryl-7-methylbicyclo [3.2.1] octane) type, and the methyl ether (6a) of a known guianin- (l-allyl-6-aryl-7-methyl-4-oxobicyclo [3.2.1] act-2-en) type neolignan.