The present invention relates to a series of prodrugs of inhibitors of DP-IV with improved properties. The compounds can be used for the treatment of a number of human diseases, including impaired glucose tolerance and type II diabetes. The compounds of the invention are described by general formula (1); wherein R1 is H or CN; R2 is selected from CH2R5, CH2CH2R5 and C(R3)(R4)—X2—(CH2)aR5; R3 and R4 are each independently selected from H and Me; R5 is selected from CON(R6)(R7), N(R8)C(═O)R9, N(R8)C(═S)R9, N(R8)SO2R10 and N(R8)R10; R6 and R7 are each independently R11(CH2)b or together they are —(CH2)2—Z—(CH2)2— or CH2—o—C6H4—Z—CH2—; R8 is H or Me; R9 is selected from R11(CH2)b, R11(CH2)bO and N(R6)(R7); R10 is R11(CH2)b; R11 is selected from H, alkyl, optionally substituted aryl, optionally substituted aroyl, optionally substituted arylsulphonyl and optionally substituted heteroaryl; R12 is selected from H2NCH(R13)CO, H2NCH(R14)CONHCH(R15)CO, C(R16)═C(R17)COR18 and R19OCO; R13, R14 and R15 are selected from the side chains of the proteinaceous amino acids; R16 is selected from H, lower alkyl (C1–C6) and phenyl; R17 is selected from H and lower alkyl (C1–C6); R18 is selected from H, lower alkyl (C1–C6), OH, O-(lower alkyl (C1–C6)) and phenyl; R19 is selected from lower alkyl (C1–C6), optionally substituted phenyl and R20C(═O)OC(R21)(R22); R20, R21 and R22 are each independently selected from H and lower alkyl (C1–C6); Z is selected from a covalent bond, —(CH2)c—, —O—, —SOd— and —N(R10)—; X1 is S or CH2; X2 is O, S or CH2; a is 1, 2 or 3; b is 0–3; c is 1 or 2; and d is 0, 1 or 2.
本发明涉及一系列DP-IV
抑制剂的前药,具有改善的性能。这些化合物可用于治疗多种人类疾病,包括糖耐量受损和2型糖尿病。本发明的化合物由通式(1)描述;其中R1为H或CN;R2从 R5, R5和C(R3)(R4)-X2-(
CH2)aR5中选择;R3和R4各自独立地选自H和Me;R5从CON(R6)(R7),N(R8)C(═O)R9,N(R8)C(═S)R9,N(R8)SO2R10和N(R8)R10中选择;R6和R7各自独立地为R11( )b或在一起它们是-( )2-Z-( )2-或 -o-
C6H4-Z- -;R8为H或Me;R9从R11( )b,R11( )bO和N(R6)(R7)中选择;R10为R11( )b;R11从H,烷基,可选取代芳基,可选取代芳酰基,可选取代芳基磺酰基和可选取代杂环芳基中选择;R12从H2NCH(R13)CO,H2NCH(R14)CONHCH(R15)CO,C(R16)═C(R17)COR18和R19OCO中选择;R13,R14和R15从蛋白质
氨基酸的侧链中选择;R16从H,低烷基(C1-C6)和苯基中选择;R17从H和低烷基(C1-C6)中选择;R18从H,低烷基(C1-C6),OH,O-(低烷基(C1-C6))和苯基中选择;R19从低烷基(C1-C6),可选取代苯基和R20C(═O)OC(R21)(
R22)中选择;R20,R21和
R22各自独立地选自H和低烷基(C1-C6);Z从共价键,-( )c-,-O-,-SOd-和-N(R10)-中选择;X1为S或 ;X2为O,S或 ;a为1、2或3;b为0-3;c为1或2;d为0、1或2。