4A, 5A, 8A, 8B-tetrahydro-6H-pyrrolo(3',4':4,5)furo(3,2-B)pyridine-6,8(7H)-dione derivatives for control of endoparasites processes for their preparation

摘要

PCT No. PCT/EP96/04346 Sec. 371 Date Apr. 15, 1998 Sec. 102(e) Date Apr. 15, 1998 PCT Filed Oct. 7, 1996 PCT Pub. No. WO97/14695 PCT Pub. Date Apr. 24, 1997The present invention relates to the use of 4a, 5a, 8a, 8b-tetrahydro-6H-pyrrolo[3',4':4,5]furo[3,2-b]pyridine-6,8(7H)-dione derivatives of the general formula (I) and salts thereof, in which the radicals R1 to R5 have the meaning given in the description, and to novel 4a, 5a, 8a, 8b-tetrahydro-6H-pyrrolo[3',4':4,5]furo[3,2-b]pyridine-6,8(7H)-dione derivatives and processes for their preparation.