Friedel–Crafts and modified Vorbrüggen ribosylation. A short synthesis of aryl and heteroaryl-C-nucleosides
摘要:
A direct coupling of aryl donor and tetra-O-acetylribose in the presence of Lewis acid led to beta-C-nucleosides in good yields. In contrast, for deactivated electron-poor aromatics, a modified Vorbruggen ribosylation reaction was investigated and successfully applied in the case of 2-trimethylsilyl-thiazole. (C) 2008 Elsevier Ltd. All rights reserved.
A direct coupling of aryl donor and tetra-O-acetylribose in the presence of Lewis acid led to beta-C-nucleosides in good yields. In contrast, for deactivated electron-poor aromatics, a modified Vorbruggen ribosylation reaction was investigated and successfully applied in the case of 2-trimethylsilyl-thiazole. (C) 2008 Elsevier Ltd. All rights reserved.