Asymmetric synthesis and evaluation of a hydroxyphenylamide voltage-gated sodium channel blocker in human prostate cancer xenografts
作者:Gary C. Davis、Yali Kong、Mikell Paige、Zhang Li、Ellen C. Merrick、Todd Hansen、Simeng Suy、Kan Wang、Sivanesan Dakshanamurthy、Antoinette Cordova、Owen B. McManus、Brande S. Williams、Maksymilian Chruszcz、Wladek Minor、Manoj K. Patel、Milton L. Brown
DOI:10.1016/j.bmc.2011.08.061
日期:2012.3
α-Hydroxy-α-phenylamides are a new class of small molecules that have demonstrated potent inhibition of voltage-gated sodium channels. The hydroxyamide motif, an isostere of a hydantoin ring, provides an active scaffold from which several potent racemic sodium channel blockers have been derived. With little known about chiral preferences, the development of chiral syntheses to obtain each pure enantiomer
已知电压门控钠通道在神经元和其他可兴奋细胞中表达。最近,已发现电压门控钠通道在人类前列腺癌细胞中表达。α-羟基-α-苯基酰胺是一类新的小分子,已证明能有效抑制电压门控钠通道。羟基酰胺基序是乙内酰脲环的等排体,提供了一种活性支架,从中衍生出几种有效的外消旋钠通道阻滞剂。由于对手性偏好知之甚少,开发手性合成以获得每种纯对映异构体作为钠通道阻滞剂进行评估很重要。使用 Seebach 和 Frater 的手性模板,( R )-3-氯扁桃酸与新戊醛的环缩合得到顺式- 和反式-2,5-二取代二氧戊环酮。使用该手性模板,我们合成了 2-(3-氯苯基)-2-羟基壬酰胺的两种对映异构体,并评估了它们在功能上抑制 hNa v亚型、人类前列腺癌细胞和异种移植物的能力。铅的对映异构体显示出显着降低体内前列腺癌的能力。