- Substitution of terminal amide with 1H-1,2,3-triazole: Identification of unexpected class of potent antibacterial agents
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3-Methoxybenzamide (3-MBA) derivatives have been identified as novel class of potent antibacterial agents targeting the bacterial cell division protein FtsZ. As one of isosteres for the amide group, 1,2,3-triazole can mimic the topological and electronic features of the amide, which has gained increasing attention in drug discovery. Based on these considerations, we prepared a series of 1H-1,2,3-triazole-containing 3-MBA analogues via isosteric replacement of the terminal amide with triazole, which had increased antibacterial activity. This study demonstrated the possibility of developing the 1H-1,2,3-triazole group as a terminal amide-mimetic element which was capable of both keeping and modulating amide-related bioactivity. Surprisingly, a different action mode of these new 1H-1,2,3-triazole-containing analogues was observed, which could open new opportunities for the development of antibacterial agents.
- Bi, Fangchao,Ji, Shengli,Venter, Henrietta,Liu, Jingru,Semple, Susan J.,Ma, Shutao
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p. 884 - 891
(2018/02/15)
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- COMPOUNDS
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The invention provides compounds of formula (I): wherein A and B represent the groups -(CH2)m- and -(CH2)n- respectively;R1 represents hydrogen or C1-6alkyl;R2 represents hydrogen, halogen, hydroxy, cyano, nitro, hydroxyC1-6alkyl, trifluoromethyl, trifluoromethoxy, C1-6alkyl, C1-6alkoxy, C1-6fluoroalkoxy, -(CH2)pC3-6cycloalkyl, -(CH2)pOC3-6cycloalkyl, -COC1-6alkyl, -SO2C1-6alkyl, -SOC1-6alkyl, -S-C1-6alkyl, -CO2C1-6alkyl, -CO2NR5R6, -SO2NR5R6, -(CH2)pNR5R6, -(CH2)pNR5COR6, optionally substituted aryl ring, optionally substituted heteroaryl ring or optionally substituted heterocyclyl ring;R3 represents optionally substituted aryl ring or optionally substituted heteroaryl ring;R4 represents hydrogen, hydroxy, C1-6alkyl, C1-6alkoxy, trifluoromethyl, trifluoromethoxy, halogen, -OSO2CF3, -(CH2)pC3-6cycloalkyl, -(CH2)qOC1-6alkyl or -(CH2)pOC3-6cycloalkyl;R5 and R6 each independently represent hydrogen, C1-6alkyl or, together with the nitrogen or other atoms to which they are attached, form an azacycloalkyl ring or an oxo-substituted azacycloalkyl ring;Z represents -(CH2)rX- wherein the -(CH2)r- group is attached to R3, or -X(CH2)r- wherein X is attached to R3, and wherein any of the -CH2- groups may be optionally substituted by one or more C1-6alkyl groups;X represents oxygen, -NR7 or -CH2- wherein the -CH2- group may be optionally substituted by one or more C1-6alkyl groups;R7 represents hydrogen or C1-6alkyl;m and n independently represent an integer selected from 1 and 2;p independently represents an integer selected from 0, 1, 2 and 3; q independently represents an integer selected from 1, 2 and 3; r independently represents an integer selected from 0, 1, and 2; or a pharmaceutically acceptable salt or solvate thereof.The compounds are useful in therapy, in particular as antipsychotic agents.
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