Synthesis and In Vitro Studies of Novel Pyrimidinyl Peptidomimetics as Potential Antimalarial Therapeutic Agents
作者:Shuren Zhu、Thomas H. Hudson、Dennis E. Kyle、Ai J. Lin
DOI:10.1021/jm020104f
日期:2002.8.1
evaluated. The core structure of the new agents consists of a substituted 5-aminopyrimidone ring and a Michael acceptor side chain methyl 2-hydroxymethyl-but-2-enoate. The synthesis of 1-6 featured a Baylis-Hillman reaction of various aldehydes with methyl acrylate catalyzed by 1,4-diazabicyclo[2.2.2]octane (DABCO) and a S(N)2' Mitsunobu reaction under the conditions of diethyl azadicarboxylate (DEAD),
合成了一类新的嘧啶基肽模拟剂(化合物1-6),并评估了它们对恶性疟原虫的体外抗疟活性。新试剂的核心结构由一个取代的5-氨基嘧啶酮环和一个迈克尔受体侧链2-羟甲基-丁-2-烯酸酯组成。1-6的合成特征在于在氮杂二羧酸二乙酯的条件下1,4-二氮杂双环[2.2.2]辛烷(DABCO)催化的各种醛与丙烯酸甲酯的Baylis-Hillman反应和S(N)2'Mitsunobu反应(DEAD),三苯膦(Ph(3)P)和各种酸。新化合物对恶性疟原虫克隆对氯喹敏感(D-6)和耐氯喹(W-2)均显示出强大的体外生长抑制活性(IC(50)= 10-30 ng / mL)。化合物6(IC(50)= 6-8 ng / mL)是该类别中活性最高的化合物,其抗疟疾功效可与氯喹媲美。通常,这类化合物对神经元和巨噬细胞的IC毒性(50)在1-16 microg / mL范围内表现出微弱至中等的体外细胞毒性,在结肠细胞系中