1,3,6-Trisubstituted indoles as peptidoleukotriene antagonists: benefits of a second, polar, pyrrole substituent
作者:Frederick J. Brown、Laura A. Cronk、David Aharony、David W. Snyder
DOI:10.1021/jm00091a010
日期:1992.6
for asthma. Two new elements of structural diversity were introduced to this series of antagonists. An investigation of pyrrole substituents in the 1,6-substituted indoles demonstrated that substitution at C-2 was detrimental to biological activity, but the incorporation of hydrophilic groups at C-3 was beneficial. The introduction of a propionamide moiety at C-3 enhanced activity by 1 order of magnitude;
含有酰基氨基和N-芳基磺酰基酰胺附件的1,6-取代的和3,5-取代的吲哚和吲唑是肽白三烯LTD4和LTE4的有效拮抗剂。3,5-取代的吲哚系列的化合物,N- [4-[[5-[[(环戊氧基)]]]甲基] [甲基] [3-基]甲基] -3-甲氧基苯甲酰基] -2-甲基-苯磺酰胺(ICI 204,219)正在接受哮喘的临床评估。该系列拮抗剂引入了结构多样性的两个新元素。对1,6-取代的吲哚中吡咯取代基的研究表明,C-2处的取代对生物活性有害,但在C-3处引入亲水基团是有益的。在C-3处引入丙酰胺部分将活性提高了1个数量级。N- [4-[[6-(环戊基乙酰胺基)-3-] [2-(N-甲基氨基甲酰基)乙基]吲哚-1-基]甲基] -3-甲氧基-苯甲酰基]苯磺酰胺(15c)的pKB为10.7豚鼠气管上的LTD4受体。二取代拮抗剂的酰基氨基部分的修饰表明酰胺CO和NH原子的转位是可行的。在1,6-和3,5