The invention provides general methods for preparing 2,9-, 2,6,9-, O
6
-aryl- and O
6
-alkyl-substituted purines in a combinatorial and traceless fashion. The methods involve, in some embodiments, Mitsunobu alkylation of 2-fluoro-6-phenylsulfenylpurine at N9 with alcohols in solution, followed by C2-capture of the purine core with a resin-bound amine and subsequent oxidation and displacement of the C6 sulfonyl group with amines and anilines.
本发明提供了一种通用方法,以组合和无痕迹的方式制备2,9-, 2,6,9-, O6-芳基-和O6-烷基取代
嘌呤。在某些实施例中,该方法涉及在溶液中使用醇对2-
氟-6-苯基磺酰基
嘌呤的N9进行
三丁基膦酸酯烷基化,随后用
树脂结合胺捕获
嘌呤核心的C2,然后用胺和
苯胺进行C6磺酰基基团的氧化和置换。