mg/kg, respectively. In vitro, against LTD4-induced contraction of isolated guinea pig trachea, 30 produced a pKB value of 7.78. In the carboxylic acid series, which served as intermediates for the above two series, 3-(2-quinolinylmethoxy)benzeneacetic acid (Wy-46,016, 5) was the most potent inhibitor of LTD4-induced bronchoconstriction (99% at 25 mg/kg, intraduodenally); however, the pKB for this compound
制备了四个系列的N-[(芳基甲氧基)苯基]化合物作为
白三烯D4(LT
D4)拮抗剂。在异羟
肟酸系列中,3-(2-
喹啉基甲氧基)苯乙氧基异羟
肟酸甲酯(Wy-48,422,20)是LT
D4诱导的支气管收缩的最有效
抑制剂,口服ED50为7.9 mg / kg。化合物20还以3.6mg / kg的ED 50口服抑制豚鼠卵白蛋白诱导的支气管收缩。在体外,用
吲哚美辛和1-半胱
氨酸预处理的LT
D4诱导的豚鼠气管收缩,20产生的pKB值为6.08。在磺酰基羧酰胺系列中,N-[((4-甲基苯基)磺酰基] -3-(2-
喹啉基甲氧基)-苯甲酰胺(Wy-49,353,30)是最有效的拮抗剂。化合物30口服抑制LT
D4-和
卵清蛋白诱导的支气管收缩,ED50分别为0.4和20.2 mg / kg。体外,针对LT
D4诱导的豚鼠气管收缩,30产生的pKB值为7.78。在用作上述两个系列中间体的
羧酸系列中,3-(2-
喹啉基甲氧基)
苯乙酸(Wy-46