Synthesis, conformation, crystal structures and DNA cleavage abilities of tetracyclic analogs of quinocarcin
作者:Robert M. Williams、Tomasz Glinka、Renee Gallegos、Paul P. Ehrlich、Mark E. Flanagan、Hazel Coffman、Gyoosoon Park
DOI:10.1016/s0040-4020(01)81795-6
日期:1991.1
Two totally synthetic, racemic analogs of quinocarcin have been designed and their crystal structures determined. Both substances effect the modest cleavage of plasmid DNA. Alteration of the conformation of the reactive oxazolidine fused to the piperazine ring by selecting the stereochemistry at C-11a through synthesis drastically attenuates the relative ability of these substances to cleave DNA.
已经设计了两种完全合成的喹诺霉素的外消旋类似物,并确定了它们的晶体结构。两种物质均影响质粒DNA的适度切割。通过合成选择C-11a的立体化学,改变与哌嗪环稠合的反应性恶唑烷的构象,从而大大削弱这些物质裂解DNA的相对能力。