Synthesis of a highly potent leukocyte function-associated antigen-1 antagonist and its metabolite labeled with stable isotopes and carbon-14, part 2
作者:Bachir Latli、Matt Hrapchak、Yibo Xu、Fenghe Qiu、Dhileepkumar Krishnamurthy、Chris H. Senanayake
DOI:10.1002/jlcr.1934
日期:2011.11
[13C2]-glycine in 15 steps and 2.5% overall yield. With the availability of [13C6]-3,5-dichloroaniline, the sulfonamide [13C6]-(2) was prepared in 12 steps and in 5.6% overall yield. For the carbon-14 synthesis, a six-step synthesis gave both compounds [14C]-(1) and [14C]-(2) from the common sulfonyl chloride intermediate [14C]-(15) in 18% and 4% radiochemical yields and specific activities of 44 and 40.5 mCi/mmol
(S)-2-[(R)-7-(3,5-Dichlorophenyl)-5-methyl-6-oxo-5-(4-trifluoromethoxybenzyl)-6,7-dihydro-5H-imidazo[1,2 -a]imidazole-3-sulfonylamino]-proprionamide (1),一种有效的淋巴细胞功能相关抗原 1 拮抗剂及其磺胺代谢物 (2) 用稳定同位素和碳 14 标记,用于药物代谢和药代动力学等研究. 使用 [3,3,3-2H]-D-丙氨酸和 [13C2]-甘氨酸分 15 个步骤使用长线性路线制备 [13C2,2H3]-(1),总产率为 2.5%。随着 [13C6]-3,5-二氯苯胺的可用性,磺酰胺 [13C6]-(2) 分 12 个步骤制备,总产率为 5.6%。对于碳 14 合成,六步合成从普通磺酰氯中间体 [14C]-(15) 在 18% 和 4% 放射化学中得到化合物