“…So far, several azole derivatives (Figure 13) have been studied for their tyrosinase inhibitory activity 388 . The discovered new types of inhibitors included DL-3(5-benzazolyl) alanines and alpha-methyldopa analogs 389 , aryl pyrazoles 390 , heterocyclic hybrids based on pyrazole and thiazolidinone scaffolds 391 , 3,5-diaryl-4,5-dihydro-1H 392 and 3,5-diaryl pyrazole derivatives 393 , pyrazolo[4,3-e][1,2,4]triazine sulfonamides and sildenafil 394–396 , 1,3-oxazine-tetrazole 397 , indole-spliced thiadiazole 398 , benzimidazole-1,2,3-triazole hybrids 399 , 1,2,3-triazole-linked coumarinopyrazole conjugates 400 , isoxazolone derivatives 401 5(4H)-oxazolone derivative 402 , imidazolium ionic liquids 403 , thiazolyl resorcinols 404 have demonstrated the inhibitory effect on tyrosinase. Furthermore, some thiazolidine derivatives have been evaluated for their tyrosinase inhibitory activity including azo-hydrazone tautomeric dyes substituted by thiazolidinone moiety 405 , (Z)-5-(2,4-dihydroxybenzylidene) thiazolidine-2,4-dione 406 , 5-(substituted benzylidene) thiazolidine-2,4-dione derivatives 407 , (2RS,4R)-2-(2,4-dihydroxyphenyl)thiazolidine-4-carboxylic acid 408 , 2-(substituted phenyl) thiazolidine-4-carboxylic acid derivatives 409 and (Z)-5-(3-hydroxy-4-methoxybenzylidene)-2-iminothiazolidin-4-one 410 .…”