17-hydroxy delta 9(11) compound was acylated at 17, followed by C-ring chlorination. The most extensively studied heterocyclic acyl functionality was the 2-furoyl, but the 3-furoyl, 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 compounds were 17-heteroaryl
描述了一系列9α,11β-二
氯-16-甲基皮质类
固醇17-杂芳基
羧酸盐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-酰基引入9α,11β-二
氯21-乙酸酯中。或者,将21-官能化的17-羟基δ9(11)化合物在17酰化,然后进行C-环
氯化。研究最广泛的杂环酰基官能团是2-糠酰基,但是还研究了3-糠酰基以及2-和3-壬酰基衍
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。最有效的局部抗炎化合物是16个α-甲基系列中的17个杂芳基酯,其中21个取代基是
氯或
氟。因此,2p [21-
氯17-(2'-
糠酸酯)]的效力是
戊酸倍他米松的8倍,而2s [21-
氟17-(2'-
糠酸酯)],2r [21-
氯17-(2'-
糠酸酯)],2r [21-
氯17-(2'-
糠酸酯)]。 -theonate)]和2v [6α-
氟21-
氯17-(2'