Piperidine-2, 6-dione derivatives and their use as tumor necrosis factor inhibitors

摘要

This invention is directed to derivatives of piperidine-2,6-dione, or their organic or inorganic salts thereof, a methods of synthesis of these derivatives, and their application as active pharmaceutical ingredient as inhibitors of TNFα releasing in cells, the derivative of piperidine-2,6-dione being of the general formula (I):;
wherein n represents 1, 2, 3, 4, 5 or 6; R1 represents from one to four of the same or different substituents selected from F, Cl, Br, C1-4 alkyl, OH, OC1-4 alkyl, NO2, NHC(O)C1-4 alkyl, NH2, NH(C1-4 alkyl), N(C1-4 alkyl)2; R2 represents OR3, NR3R4, N(R3)COR4, O2CR5; R3 and R4 represent independently and at each occurrence H or C1-4 alkyl; R5 represents CHR6NR7R8, CHR6NR9C(O)CHR10NR7R8, a heterocycle W or CHR6NR9C(O)W; R6, R9, R10 represent independently and at each occurrence H, or C1-4 alkyl; R7 and R8 represent independently and at each occurrence H, C1-4 alkyl, or R7 and R8 taken together represent 1,3-propylene, 1,4-butylene, 1,5-pentylene, or 1,6-hexylene; W represents four-membered, five-membered, six-membered, seven-membered, or eight-membered saturated or unsaturated heterocycle.

主权项

1. A method of treating or curing rheumatoid arthritis caused by elevated levels of TNF in a patient comprising administering a compound of formula (I) or an organic or inorganic salt thereof as an active pharmaceutical ingredient to the patient, wherein n is 1, R1 represents NH2; R2 represents OR3; R3 represents CH3.