Optically Active Antifungal Azoles. Part 6. Synthesis and Antifungal Activity of N-((1R,2R)-2-(2,4-Difluorophenyl)-2-hydroxy-1-methyl-3-(1H- 1,2,4-triazol-1-yl)propyl)-N′-(4-substituted phenyl)-3(2H,4H)-1,2,4- triazolones and 5(1H,4H)