Synthesis of oligodeoxyribonucleotides containing a conformationally-locked anti analogue of O6-methyl-2′-deoxyguanosine and their recognition by MGMT and Atl1
摘要:
我们发现,含有构象锁定的 O6-烷基鸟嘌呤反类似物的 DNA 是人类 O6-甲基鸟嘌呤 DNA 甲基转移酶(MGMT)和烷基转移酶样蛋白 Atl1 的不良底物。这凸显了合成构象的要求,并解释了为什么某些 O6-烷基鸟嘌呤是 MGMT 的不良底物。
The syntheses and properties of tricyclic pyrrolo[2,3-d]pyrimidine analogues of S6-methylthioguanine and O6-methylguanine
作者:Ana R. Hornillo-Araujo、Adam J. M. Burrell、Miren K. Aiertza、Takayuki Shibata、David M. Hammond、Dolor?s Edmont、Harry Adams、Geoffrey P. Margison、David M. Williams
DOI:10.1039/b516447h
日期:——
The syntheses of novel tricyclic pyrrolo[2,3-d]pyrimidine analogues of S6-methylthioguanine are described. The crystal structures and pKa values of these and related O6-methylguanine analogues are reported. All compounds display higher pKa values than O6-methylguanine with the sulfur-containing analogues being the more basic and exhibiting higher stability in aqueous solution. In a standard substrate