7Z)-6-S-glutathionyl-5-hydroxy-9-(4-heptanylphenyl)-7 -nonenoic acid. This analogue has an EC50 value of 74.5 nM, in the presence of 1-serine borate (45 mM), on guinea pig tracheal spirals. The agonist activity of the cysteinylglycinyl- and the cysteinyl-substituted analogues was inhibited by FPL-55712. Three of the analogues were weak leukotriene antagonists in vitro on guinea pig tracheal spirals. The most potent
报道了一系列稳定的
白三烯类似物(2)的合成和
生物学特性。它们是(5S,6R,7Z)-6-肽基-5-羟基-9-苯基-7-
壬烯酸的衍
生物,其中苯基被庚基,
2-庚烯基或己氧基取代(R1 ),而肽是
谷胱甘肽,半胱
氨酰甘
氨酰或半胱
氨酰。最有效的激动剂是(5S,6R,7Z)-6-S-
谷胱甘肽-5-羟基-9-(4-
庚基苯基)-7-
壬烯酸。在豚鼠气管螺旋上存在1-
丝氨酸硼酸盐(45 mM)时,该类似物的
EC50值为74.5 nM。半胱
氨酰甘
氨酰基和半胱
氨酰基取代的类似物的激动剂活性被FPL-55712抑制。其中的三个类似物是豚鼠气管螺旋体外的弱
白三烯拮抗剂。其中最有效的是(5S,6R,7Z)-6-S-半胱
氨酰基-5-羟基-9-(2-
庚基苯基)-7-++ +
壬烯酸。在10 microM时,该类似物将8 nM LTE4诱导的收缩抑制28%。