How is 2,5-Anhydro-1,3,4-trideoxy-2-(2,4-difluorophenyl)-4-({[(4-methylphenyl)sulfonyl]oxy}methyl)-1-(1H-1,2,4-triazol-1-yl)-D-erythro-pentitol (CAS: 166583-12-6) typically synthesized?

2,5-Anhydro-1,3,4-trideoxy-2-(2,4-difluorophenyl)-4-({[(4-methylphenyl)sulfonyl]oxy}methyl)-1-(1H-1,2,4-triazol-1-yl)-D-erythro-pentitol (CAS: 166583-12-6) is synthesized through a multi-step process involving the protection of the hydroxyl groups, introduction of the 2,4-difluorophenyl moiety, and subsequent coupling with the 1H-1,2,4-triazole derivative. The reaction typically proceeds with high yield and good selectivity under mild conditions, using Lewis acids as catalysts.