Synthesis of Triazole-linked Homonucleoside Polymers through Topochemical Azide-Alkyne Cycloaddition
作者:Atchutarao Pathigoolla、Kana M. Sureshan
DOI:10.1002/anie.201404797
日期:2014.9.1
conventional solution or solid‐phase DNA synthesis is limited for making DNA analogues with unnatural linkages. Other limitations associated with conventional synthesis include difficulty in making larger polymers, poor yield, incomplete reaction, and difficult purification. To circumvent these problems, a single‐crystal‐to‐single‐crystal (SCSC) synthesis of a 1,5‐triazole‐linked polymeric ssDNA analogue from
开发用于各种领域的稳定的修饰核酸引起了极大的兴趣。磷酸修饰的DNA类似物(其中磷酸二酯基被替代基团取代)具有吸引力,因为它们具有很高的稳定性和对核酸酶的抵抗力。但是,常规溶液或固相DNA合成的范围仅限于制备具有非天然连接的DNA类似物。与常规合成相关的其他限制包括难以制备更大的聚合物,收率低,反应不完全和纯化困难。为了解决这些问题,据报道,通过拓扑化学的叠氮化物-炔烃环加成反应(TAAC),从修饰的核苷中合成了1,5-三唑连接的聚合物ssDNA类似物的单晶对单晶(SCSC)。这是第一款无溶剂的产品,