Protecting-Group-Free Synthesis of Glycosyl 1–Phosphates
摘要:
Glycosyl 1-phosphates enriched in the alpha-anomer are obtained without the use of protecting groups in two steps starting from the free hemiacetal. Condensation of free hemiacetals with toluenesulfonylhydrazide yields a range of glycosylsulfonohydrazide donors which can be oxidized using cupric chloride in the presence of phosphoric acid and the coordinating additive 2-methyl-2-oxazoline to give useful yields of the fully deprotected glycosyl 1-phosphates.
Protecting-Group-Free Synthesis of Glycosyl 1–Phosphates
作者:Landon John G. Edgar、Somnath Dasgupta、Mark Nitz
DOI:10.1021/ol3019083
日期:2012.8.17
Glycosyl 1-phosphates enriched in the alpha-anomer are obtained without the use of protecting groups in two steps starting from the free hemiacetal. Condensation of free hemiacetals with toluenesulfonylhydrazide yields a range of glycosylsulfonohydrazide donors which can be oxidized using cupric chloride in the presence of phosphoric acid and the coordinating additive 2-methyl-2-oxazoline to give useful yields of the fully deprotected glycosyl 1-phosphates.
Straathof, A. J. J.; Kieboom, A. P. G.; Bekkum, H. van, Recueil des Travaux Chimiques des Pays-Bas, 1985, vol. 104, p. 65 - 68
作者:Straathof, A. J. J.、Kieboom, A. P. G.、Bekkum, H. van