[14C] and [3H]-labelling of Ragaglitazar: A dual acting PPAR? and PPAR? agonist with hypolipidemic and anti-diabetic activity
作者:Jesper B. Kristensen、Steen K. Johansen、Jacob S. Valsborg、Lars Martiny、Christian Foged
DOI:10.1002/jlcr.690
日期:2003.4
Currently, Ragaglitazar is being developed as a drug for the treatment of hyperglycaemia and hyperlipidemia in patients with type 2 diabetes. Here, we report the labelling of Ragaglitazar with carbon-14 and tritium for in vivo and in vitro investigations. Two different carbon-14 labelled as well as two different tritium labelled tracers of Ragaglitazar were synthesised. The carbon-14 label was introduced from either ethyl bromo[2-14C]acetate (5 steps/33% overall yield) or [U-14C]phenoxazine (4 steps/48% overall yield). Tritium was incorporated either by catalytic tritiation of an alkene precursor followed by chiral HPLC separation (2 steps/17% overall yield) or by catalytic tritium–halogen exchange of an aryl bromide precursor (2 steps/68% overall yield). Copyright © 2003 John Wiley & Sons, Ltd.
目前,Ragaglitazar正在开发作为治疗2型糖尿病患者高血糖和高脂血症的药物。我们在此报告了Ragaglitazar的碳-14和氚标记,以便进行体内和体外研究。合成了两种不同的碳-14标记以及两种不同的氚标记的Ragaglitazar示踪剂。碳-14标记是通过乙基溴[2-14C]醋酸酯(5个步骤/总产率33%)或[U-14C]苯咯唑(4个步骤/总产率48%)引入的。氚的引入则是通过对烯烃前体的催化氚化反应后再进行手性HPLC分离(2个步骤/总产率17%),或通过芳基溴化物前体的催化氚-卤素交换(2个步骤/总产率68%)进行的。版权 © 2003 John Wiley & Sons, Ltd.