Syntheses of three optically pure, deoxygenated myo-inositol 1,4,5-trisphosphate analogues from quebrachitol are reported together with their binding affinities and 45 Ca 2+ release activity. The ligand-binding affinities of the analogues were determined using membrane preparations from bovine adrenal cortex. The 45 Ca 2+ release activities were compared to that of Ins(1,4,5)P 3 , using the calcium
三种光学纯的、
脱氧的肌醇 1,4,5-
三磷酸酯类似物的合成与它们的结合亲和力和 45 Ca 2+ 释放活性一起报告。使用来自牛肾上腺
皮质的膜制剂测定类似物的
配体结合亲和力。45 Ca 2+ 释放活性与Ins(1,4,5)P 3 的释放活性进行了比较,使用
皂苷透化的SH-SY5Y人神经母细胞瘤细胞的
钙动员受体。1D-3-deoxy-Ins(1,4,5)P 3 (16) 和 1D-2,3-dideoxy-Ins(1,4,5)P 3 (11) 表现出非常有效的
配体和激动剂特性,而1D-2,3,6-trideoxy-Ins(1,4,5)P 3 (19) 的效力要低得多。这些数据为 Ins(1,4,5)P 3 的 HO-6 在其结合亲和力和 Ca 2+ 动员活性中发挥的关键作用提供了确凿的证据