Synthesis and Biological Evaluation of Cyclophostin: A 5′,6″-Tethered Analog of Adenophostin A
作者:Martin de Kort、Anouk D. Regenbogen、Herman S. Overkleeft、R.A. John Challiss、Yoriko Iwata、Shuichi Miyamoto、Gijs A. van der Marel、Jacques H. van Boom
DOI:10.1016/s0040-4020(00)00480-4
日期:2000.8
The synthesis, conformational analysis and biological evaluation of 5′-6″-tethered adenophostin A, so-called cyclophostin 14, and its de-adeninylated analog 15 are described. They are prepared via ring-closing metathesis of diolefin 28, consecutive coupling of the central building block 33 to 6-N-benzoyladenine or propargyl alcohol, respectively, followed by phosphorylation and deprotection. NMR spectroscopy
描述了5'-6''系腺苷A,即所谓的环磷蛋白14及其去腺苷酸类似物15的合成,构象分析和生物学评估。它们通过二烯烃28的闭环易位,中心结构单元33分别连续地偶联至6- N-苯甲酰腺嘌呤或炔丙醇,随后进行磷酸化和脱保护而制备。NMR光谱和分子动力学模拟表明,5'-6“-tether诱导从2'-的构象变化内/ SYN在1至3'-内型/抗在14。与环核糖蛋白15相比,低EC 50 / IC 50比反映出环磷蛋白14的Ca 2+释放出乎意料的小损失,这表明腺嘌呤与IP 3 R的相互作用在确定环磷酰胺14中起着决定性作用。腺苷A的高活性(1)。