Patent number: 8637545
Abstract: 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 TNF? 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-m
Type:
Grant
Filed:
October 7, 2007
Date of Patent:
January 28, 2014
Assignee:
Tianjin Hemay Bio-Tech Co., Ltd.
Inventor:
Hesheng Zhang
Patent number: 8183260
Abstract: Taught are derivatives of 5H-thioeno(3,4-c)pyrrole-4,6-dione, their organic, and inorganic salts, methods of synthesis of these derivatives, and their application as active pharmaceutical-ingredients useful as inhibitors of TNF?, the derivative being represented by the general formula (I): in which R1 represents H, C1-6alkyl, OR4, OC(O)R5, NO2, NHC(O)R6, or NR7R8; R2 represents H, a halogen, or C1-6alkyl; R3 represents H, methyl, isopropyl, allyl, benzyl, CH2CO2(C1-6alkyl), or CH2(CH2)nR9; R4, R5, R6, R7, and R8 each independently and at each occurrence represents H, or C1-6alkyl; R9 represents H, C1-6alkyl, OH, OC1-6alkyl, NH2, NHC1-6alkyl, N(C1-6alkyl)2, or CO2(C1-6alkyl); and n represents 1, 2, 3, or 4.
Type:
Grant
Filed:
March 20, 2008
Date of Patent:
May 22, 2012
Assignee:
Tianjin Hemay Bio-Tech Co., Ltd.
Inventor:
Hesheng Zhang
Patent number: 8053577
Abstract: A compound of Formula I, a pharmaceutically-acceptable salt or a hydrate thereof, wherein R1 is H, or C1-4 alkyl; R2 is H, halogen, or C1-4 alkyl; R3 is H, halogen, or C1-4 alkyl, and R4 is C1-6 alkyl, aryl; or ?CR3R4 is cyclopentylidene, cyclohexylidene, 1-methylpiperidin-4-ylidene, or inden-1-ylidene; R5 is independently at each occurrence F, Cl, Br, CF3, R9, OR9, NR9R10, NO2, CN, COOR9, O2CR9, CONR9R10, NR9C(O)R10, heterocyclic group, aryl, or a group of Formula II; R6 is H, halogen, or C1-4 alkyl; R7 is H, halogen, or C1-4 alkyl; R8 is H, C1-4alkyl group; R9 is H, or C1-6 alkyl; R10 is H, or C1-6 alkyl; R11 is H, or C1-4 alkyl; R12 is H, or C1-4 alkyl; m is 0, 1, or 2; when R5 is F, Cl, Br, CF3, R9, OR9, NR9R10, NO2, CN, COOR9, O2CR9, CONR9R10, NR9C(O)R10, heterocyclic group, or aryl, n is 1, 2, 3, or 4; when R5 is the group of Formula II, n is 0, 1, 2, 3, or 4; x is 0, 1, 2, 3, or 4.
Type:
Grant
Filed:
November 28, 2008
Date of Patent:
November 8, 2011
Inventor:
Hesheng Zhang