Synthesis of deuterium, tritium, and carbon-14 labeled BIRB 796, a p38 MAP kinase inhibitor
作者:Bachir Latli
DOI:10.1002/jlcr.873
日期:2004.10.30
l]urea (BIRB 796), currently in clinical trials for the treatment of inflammatory diseases, is a potent inhibitor of p38 MAP kinase. Labeled BIRB 796 with stable and radioactive isotopes was required for metabolism, distribution, and absorption studies. We first report the synthesis of carbon-14 labeled BIRB 796 with a specific activity of 2 GBq/mmol (54.2 mCi/mmol), using [14C]-phosgene under modified
1-(5-tert-Butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[4-(2-morpholin-4-yl-ethoxy)naphthalen-1-yl]urea (BIRB 796) ),目前处于治疗炎症性疾病的临床试验中,是一种有效的 p38 MAP 激酶抑制剂。代谢、分布和吸收研究需要具有稳定和放射性同位素的标记 BIRB 796。我们首先报告了在改进的 Schotten-Baumann 条件下使用 [14C]-光气合成比活性为 2 GBq/mmol (54.2 mCi/mmol) 的碳 14 标记的 BIRB 796;其次,通过用氚气还原脱卤碘-BIRB 796制备比活为659 GBq/mmol (17.81 Ci/mmol)的氚标记的BIRB 796;最后,使用吗啉-2,2,3,3,5,5,6,6-2H8 合成 2H8-BIRB 796,2H 同位素富集率为