and tritium-labelled AHLs were synthesized in an effort to detect the cellular distribution and monitor the membrane transport of AHLs. Most tritium labelling methods use tritium gas, which is difficult to handle, however, here we present a novel, gas-free method with which to obtain deuterium- and tritium-label terminally unsaturated AHLs through catalytic reduction of the double bond. This uncommon
N-酰基-
L-高丝氨酸内酯 (AHL) 是在革兰氏阴性细菌中发现的信号分子,使细菌能够通过群体感应相互交流,并通过跨界信号与它们的真核宿主细胞进行交流。对跨界信号机制知之甚少。合成了
氘和氚标记的 AHL,以检测细胞分布并监测 AHL 的膜转运。大多数氚标记方法使用氚气,这很难处理,但是,在这里我们提出了一种新的无气体方法,通过双键的催化还原获得
氘和氚标记的末端不饱和 AHL。这种罕见的双键还原使用
硼氢化钠-[2H] 或
硼氢化钠-[3H],并在
乙酸钯 (II) 存在下进行,
乙酸钯 (II) 在独特的逐层系统中充当催化剂。此外,还提供了对所得同位素体的详细核磁共振分析。