Synthesis and in vitro evaluation of new benzovesamicol analogues as potential imaging probes for the vesicular acetylcholine transporter
作者:Yolanda Zea-Ponce、Sylvie Mavel、Thaer Assaad、Shane E. Kruse、Stanley M. Parsons、Patrick Emond、Sylvie Chalon、Nicolas Giboureau、Michael Kassiou、Denis Guilloteau
DOI:10.1016/j.bmc.2004.10.043
日期:2005.2
Our goal was to synthesize new stereospecific benzovesamicol analogues, which could potentially be used as SPECT or PET radioligands for the vesicular acetylcholine transporter (VAChT). This paper describes the chemical synthesis, resolution and determination of binding affinity for four enantiomeric pairs of derivatives. Their intrinsic affinities were determined by competition against binding of
我们的目标是合成新的立体特异性苯并呋喃类似物,可将其用作水泡乙酰胆碱转运蛋白(VAChT)的SPECT或PET放射性配体。本文描述了四个对映体衍生物对的化学合成,拆分和结合亲和力的测定。它们的固有亲和力是通过竞争[3H] vesamicol与人VAChT的结合来确定的。在这八个对映异构体中,(E)-(R,R)-5-AOIBV [(R,R)-3]和(R,R)-5-FPOBV [(R,R)-4]显示最高对VAChT的结合亲和力(分别为Kd = 0.45和0.77 nM),这表明从5-idodo的链延长(如5-iodobenzovesamicol(5-IBVM)到5-(E)-3) -碘代烯丙氧基或5-氟丙氧基取代基,分别在5-AOIBV和5-FPOBV中,vesamicol结合位点具有很好的耐受性。对映异构体(R,R)-4-MAIBV [(R,R)-16]保留(-)-5-IBVM的基本结构,但在