Synthesis of Caged Nucleosides with Photoremovable Protecting Groups Linked to Intramolecular Antennae
作者:Joulia Smirnova、Dominik Wöll、Wolfgang Pfleiderer、Ulrich E. Steiner
DOI:10.1002/hlca.200590067
日期:2005.4
Based on the [2-(2-nitrophenyl)propoxy]carbonyl (nppoc) group, six new photolabile protecting groups (2, 8, 9b, 16b, 25b, and 26), each covalently linked to a 9H-thioxanthen-9-one (Tx) unit functioning as an intramolecular triplet sensitizer, were synthesized. Linkers were introduced between the Me group or the aromatic ring of nppoc and the 2-position of Tx by means of classical organic synthesis
基于[2-(2-硝基苯基)丙氧基]羰基(nppoc)基团,六个新的光不稳定保护基团(2、8、9b ,16b,25b和26),每个均与9 H -thioxanthen-9共价连接合成了充当分子内三重态敏化剂的一个(Tx)单元。通过经典的有机合成结合Pd催化的CC偶联反应,在Me基或nppoc的芳香环与Tx的2位之间引入了连接基。新的对光不稳定的保护基团,以DNA芯片被附着于胸苷的5'-O-原子光引导合成可以使用通过碳酸酯键,从而产生笼核苷7,11,13,19,20,和30。