Compounds of Formula II
wherein
R1a is H; and R1b is C1-C6alkyl, Carbocyclyl or Het; or
R1a and R1b together define a saturated cyclic amine with 3-6 ring atoms;
R2a and R2b are independently H, halo, C1-C4alkyl, C1-C4haloalkyl or C1-C4alkoxy, or R2a and
R2b together with the carbon atom to which they are attached form a C3-C6cycloalkyl;
R3 is a branched C5-C10 alkyl chain, C2-C4haloalkyl or —CH2C3-C7 cycloalkyl;
R4′ is C1-C6alkyl, C1-C6haloalkyl or oxetany-3-yl.
for use in the prophylaxis or treatment of a disorder characterized by inappropriate expression or activation of cathepsin S.
                            化合物的公式II,其中R1a为H; R1b为C1-C6烷基,碳环或杂环; 或者R1a和R1b一起定义具有3-6个环原子的饱和环胺; R2a和R2b独立地为H,卤素,C1-C4烷基,C1-C4卤代烷基或C1-C4烷氧基,或者R2a和R2b与它们连接的碳原子一起形成C3-C6环烷基; R3为支链状C5-C10烷基链,C2-C4卤代烷基或-CH2C3-C7环烷基; R4'为C1-C6烷基,C1-C6卤代烷基或氧杂
环丙烷-3-基。用于预防或治疗其特征为cathepsin S不适当表达或激活的紊乱的疾病。