and 2- and 3-thenoyl derivatives were also investigated. Antiinflammatory potencies were measured in mice by a 5-day modification of the Tonelli croton oil ear assay. The most potent topical antiinflammatory agents were 1e, dexamethasone 17-(2'-furoate) 21-propionate, and 2c, the 21-chloro 17-(2'-furoate) in the 9 alpha-chloro series, both being 6 times as potent as betamethasone 17-valerate. Several
描述了9种α-
氟-11β-羟基-16甲基和9α-
氯-11β-羟基-16-甲基皮质类
固醇的一系列17-
呋喃酰基和-thenoyl酯的制备和局部抗炎作用。在4-(二甲基
氨基)
吡啶存在下,通过用适当的杂芳基羰基
氯直接酰化,将17种α-酯引入9种α-
氟11-酮或适当的δ9(11)化合物中。C环的官能化通过标准方法完成。研究最广泛的杂环酰基是2-
呋喃酰基,但是也研究了3-
呋喃酰基以及2-和3-thenoyl衍
生物。通过对Tonelli
巴豆油耳测定法进行5天修改,测量了小鼠的抗炎能力。最有效的局部抗炎药是1e,
地塞米松17-(2' -
糠酸酯)21-
丙酸酯和2c,9-α-
氯系列中的21-
氯17-(2'-
糠酸酯),两者的效力是
倍他米松17-
戊酸酯的6倍。其他几种9个α-
氯11β-羟基17-杂芳基
羧酸盐(2a,2b,2d和2g)的效力至少是
倍他米松17-
戊酸酯的4倍。在临床中对2c的评估证实了该化合物是人类有效的局部抗炎药。