Synthesis of a carbon-14 labeled trifluoromethoxy group has been accomplished using the stepwise oxidative fluorination–desulfurization of a readily prepared [14C]xanthate (5). This novel labeling procedure allowed a rapid synthesis of substance P antagonist candidate 1 that avoided potentially more complex ring-labeling procedures. Similar procedures have been used to prepare C-14 labeled trifluoromethyl and trifluoromethylamine groups. Copyright © 2001 John Wiley & Sons, Ltd.
通过对容易制备的[14C]黄原酸盐(5)进行逐步氧化
氟化-脱
硫,合成了碳-14 标记的三
氟甲氧基。这种新颖的标记程序可以快速合成候选的 P 物质拮抗剂 1,避免了可能更为复杂的环标记程序。类似的程序也被用于制备 C-14 标记的三
氟甲基和三
氟甲胺基团。Copyright © 2001 John Wiley & Sons, Ltd. All Rights Reserved.