Macrocyclic 14-Membered Ring Diketal Diamines: Synthesis, Conformational Analysis and99mTc Radiolabeling Evaluation
作者:Radouane Affani、Philippe Auzeloux、Jean-Claude Madelmont、Denise Dugat
DOI:10.1002/ejoc.200701151
日期:2008.4
corresponding diketal dilactams by reduction with lithium aluminum hydride in the presence of a trace amount of triethylamine. In the (15–30) × 10–3M concentration range, the reaction led mainly to the expected doubly reduced compounds except in the trans-OMe substituted series (R = Ph, Me), in which it partially stopped at the single reduction stage. A conformational study conducted by liquid NMR spectroscopy
手性和非手性大环二缩酮二胺,环烷烃的类似物,是由先前获得的相应二缩酮二内酰胺在痕量三乙胺存在下用氢化铝锂还原合成的。在 (15–30) × 10–3M 浓度范围内,反应主要导致预期的双还原化合物,但反式 OMe 取代系列(R = Ph,Me)除外,其中它在单还原阶段部分停止. 通过液体核磁共振光谱和分子力学计算进行的构象研究表明,对于反式 OMe 化合物 7b (R = Me) 和 10b (R = H),最稳定的构象要么设置在矩形 [3434] 型结构中,要么是稳定的由两个分子内 NH···O 氢键连接所有其他大环二胺。Tc-99m 用氮化锝核 [TcN]2+ 进行放射性标记,交换产率约为 10-20%。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)