Carborane-tetrazine derivatives were developed that can be used to enable boron clusters to bind specific targets invivo using pretargeting strategies and bioorthogonal inverse electron demand Diels–Alder chemistry. Specifically, 1,12-dicarba-closo-dodecaborate-1-(4-(1,2,4,5-tetrazin-3-yl)phenyl)methanamide and 1,2-dicarba-closo-dodecaborate-1-(4-(1,2,4,5-tetrazin-3-yl)phenyl)methanamide were synthesized
碳
硼烷四嗪衍
生物开发了可用于使
硼簇结合特异性靶INVIVO使用预靶向策略和
生物正交逆电子需求的Diels-Alder
化学。具体而言,1,12- dicarba-闭合碳-dodecaborate -1-(4-(
1,2,4,5-四嗪-3-基)苯基)methanamide和1,2- dicarba-闭合碳-dodecaborate -1-(4-分别以49%和78%的产率合成了-((
1,2,4,5-四嗪-3-基)苯基)甲酰胺,并测定了两种化合物的X射线结构。在温和的条件下,将邻-甲
硼烷衍
生物转化为相应的Nido-簇,并用125 I和123成功地对产物进行了放射性标记。I.碳
硼烷-四嗪通过[4 + 2]逆电子需量Diels-Alder型反应与(E)-环辛-4-烯醇(TCO)迅速定量反应,其中
乙腈中的二阶速率常数
碘化簇的值是199±26M -1 s -1。Thelabelled四嗪均长时间溶液中稳定并