An Efficient Approach to the Synthesis of Nucleosides: Gold(I)-Catalyzed N-Glycosylation of Pyrimidines and Purines with Glycosyl ortho-Alkynyl Benzoates
作者:Qingju Zhang、Jiansong Sun、Yugen Zhu、Fuyi Zhang、Biao Yu
DOI:10.1002/anie.201100514
日期:2011.5.16
Persuaded with gold: The title reaction in the presence of [Ph3PAuNTf2] (Tf=trifluoromethanesulfonyl) led conveniently to the corresponding nucleosides with excellent regioselectivity (see scheme). Even purine derivatives underwent this transformation owing to the mild conditions, which enabled the use of protecting groups that would not usually be compatible with N‐glycosylation conditions.
用金说服:在[Ph 3 PAuNTf 2 ](Tf =三氟甲磺酰基)存在下的标题反应可方便地产生具有良好区域选择性的相应核苷(参见方案)。由于条件温和,即使是嘌呤衍生物也经历了这种转变,这使得能够使用通常与N-糖基化条件不相容的保护基。