作者:Tuomas Karskela、Harri Lönnberg
DOI:10.1039/b612655c
日期:——
(3H-imidazo[2,1-i]purin-7-yl)methyl amines has been developed. The key features of this library synthesis are: (i) immobilization of commercially available N6-benzoyl-5'-O-(4,4'-dimethoxytrityl)-2'-deoxyadenosine 3'-(2-cyanoethyl N,N-diisopropylphosphoramidite) by phosphitylation to a hydroxyl-functionalized support, (ii) quantitative conversion of the deprotected adenine base to 3H-imidazo[2,1-i]purine-7-carbaldehyde
已经开发了固相支持的合成N,N-二取代的(3H-咪唑并[2,1-i]嘌呤-7-基)甲基胺的方法。该文库合成的关键特征是:(i)固定市售的N6-苯甲酰基-5'-O-(4,4'-二甲氧基三苯甲基)-2'-脱氧腺苷3'-(2-氰基乙基N,N-二异丙基磷酰胺)通过磷酸化成羟基官能化的载体,(ii)在甲酸和2,6存在下,在DMF中用溴代丙二醛将脱保护的腺嘌呤碱定量转化为3H-咪唑并[2,1-i]嘌呤-7-甲醛-二甲基吡啶,(iii)对甲酰基进行还原性胺化,然后进行N-烷基化或N-酰化,以及(iv)通过酸水解裂解N-糖苷键而从载体上释放。