6-SUBSTITUTED DERIVATIVES OF 1,2,4A, 5A, 8A, 8B-HEXAHYDRO-Y 1,2,3,4A, 5A, 8A, 8B-OCTAHIDRO-6H-PIRROLO (3 ', 4': 4,5 ) FURO 3.2-B) PIRID-8 (7H) -ONA AND ITS EMPLOYMENT FOR THE FIGHT AGAINST ENDOPARASITES.

摘要

The invention relates to 1,2,3,44A, 5A, 8A, 8B-hexahydro and 1,2,3,44A, 5A, 8A, 8B-octahydro-6H-pyrrolo [3 '', 4 '': 4 , 5] furo [3,2-b] pyrido-8- (7H) -one 6 substituted of the general formula (I) and its salts. In this formula, the residues R {sup, 1}, R {sup, 2}, R {sup, 3}, R {sup, 4}, A and B have the significance assigned in the description. The invention also relates to methods for preparing them and their use to combat endoparasites.