Common approaches to optimization the pharmaceutical properties of an initial lipophilic hit, something which is common in anti-tuberculosis drug discovery, include introducing ionizing functional groups, heteroatoms and/or decreasing non-polar moieties.In our efforts to optimize these properties for our lead series,the adamantyl–phenyl ureas 1–6, a bioisosteric replacement strategy was applied to the phenyl ring producing a new series of adamantyl-heteroaromatic ureas. This strategy significantly improved solubility over the first generation adamantyl–phenyl ureas and was also successful in maintaining good anti-TB MIC values for the isoxazole, thiazole, oxadiazole and pyrazole series. However,
despite increased solubility, the sulfonamide and pyridine series failed to have substantial activity against M. tb. With regard to
the isoxazole, oxadiazole and pyrazole series, substitutions with
Common approaches to optimization the pharmaceutical properties of an initial lipophilic hit, something which is common in anti-tuberculosis drug discovery, include introducing ionizing functional groups, heteroatoms and/or decreasing non-polar moieties.In our efforts to optimize these properties for our lead series,the adamantyl–phenyl ureas 1–6, a bioisosteric replacement strategy was applied to the phenyl ring producing a new series of adamantyl-heteroaromatic ureas. This strategy significantly improved solubility over the first generation adamantyl–phenyl ureas and was also successful in maintaining good anti-TB MIC values for the isoxazole, thiazole, oxadiazole and pyrazole series. However,despite increased solubility, the sulfonamide and pyridine series failed to have substantial activity against M. tb. With regard tothe isoxazole, oxadiazole and pyrazole series, substitutions with
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