Synthesis of indole-ring fluorine-labeled analogs of LY333531, an isoform-selective inhibitor of protein kinase C
作者:Peter G. Goekjian、Priscilla Lugo-Mas、Stacy L. Cable、John O. Cole、James W. White、Dale J. Thompson、Tamara P. Dudley、Michael R. Jirousek、Jeffrey T. Dixon、Lawrence M. Ballas
DOI:10.1016/s0022-1139(99)00095-0
日期:1999.9
to a chiral, aliphatic dimesylate prepared from 1(S)-[(2R)-1,4-dioxaspiro[4.5]decanyl]3-buten-1-ol. The coupling-macrocyclization step was performed by slow addition of a mixture of the bis(indolyl)maleimide and the dimesylate to a suspension of cesium carbonate in DMF, and adjustment of the functionality provided the final labeled analog 1. A simplified analog 2 was prepared from diiodohexane by a similar
LY333531的两种氟标记类似物已被制备,这是一种有效的,具有ATP竞争性且对蛋白激酶C-beta具有同工型选择性的抑制剂。将标记置于吲哚环上以探测PKC同工型的催化结构域的差异。氟化双(吲哚基)马来酰亚胺是通过5-氟吲哚与N-甲基二氯马来酰亚胺的Steglich偶联制备的,并偶联到由1(S)-[((2 R)-1,4-dioxaspiro)制备的手性脂族二甲基酯上[4.5]癸基] 3-丁烯-1-醇。通过将双(吲哚基)马来酰亚胺和二甲磺酸酯的混合物缓慢加入碳酸铯在DMF中的悬浮液中来进行偶联-大环化步骤,并调节官能度以提供最终的标记的类似物1。。通过类似的方法由二碘己烷制备简化的类似物2。化合物1和2对PKC-beta(II)的IC(50)分别为5和6 nM,对PKC-α的IC(50)分别为57和79 nM。