Potent soft corticosteroid pharmaceutical compositions comprising them and method for use as anti-inflammatory agents. Also, a method for softening fluticasone propionate and similar corticosteroids to arrive at potent but safer alternatives. The compound 5-fluoromethyl 17α-dichloroacetoxy-6α,9α-difluoro-11β-hydroxy-16a-methyl-3-oxoandrosta-1,4-diene-17β-carbothioate, which is equally potent to but safer than fluticasone, is among those provided. Another compound of particular interest is 2-hydroxyethyl 17α-dichloroacetoxy-6α,9α-difluoro-11β-hydroxy-16β-methyl-3-oxoandrosta-1,4-diene-17β-carboxylate.
                            由其组成的强效软皮质类
固醇药物组合物以及用作消炎剂的方法。此外,还有一种软化
丙酸氟替卡松和类似皮质类
固醇的方法,以获得强效但更安全的替代品。所提供的化合物包括 5-
氟甲基 17α-二
氯乙酰氧基-6α,9α-二
氟-11β-羟基-16a-甲基-3-氧代
雄甾烷-1,4-二烯-17β-
硫代
碳酸酯,其药效与
氟替卡松相同,但比
氟替卡松更安全。另一种特别值得关注的化合物是 17α-二
氯乙酰氧基-6α,9α-二
氟-11β-羟基-16β-甲基-3-氧代
雄酮-1,4-二烯-17β-
羧酸 2-羟乙基酯。