Hydroxylamine Derivatives as Nucleophiles in Ferrier Glycosylation: Synthesis of Aminoxy Pseudoglycals
作者:Ch. Reddy、Y. Rao、T. Kumar、K. Reddy、S. Chandrasekhar
DOI:10.1055/s-2007-1000828
日期:2008.1
The use of hydroxylamine derivatives as the aminoxy equivalent nucleophiles in Ferrier glycosylation catalyzed by various acid catalysts is described. The reaction of tri-O-protected d-glucal with N-hydroxyphthalimide or N-hydroxysuccinimide was effectively promoted by a catalytic amount of zinc(II) chloride to produce the corresponding aminoxy pseudoglycal in good yields and preferential anomeric selectivity.
本文描述了氢氧胺衍生物作为氨氧等效亲核试剂在各种酸催化剂催化下进行Ferrier糖苷化的应用。三-O-保护d-葡萄糖醛与N-羟基邻苯二甲酰亚胺或N-羟基琥珀酰亚胺的反应,通过催化剂量的氯化锌(II)有效促进,获得了相应的氨氧伪糖醛,产率良好且具优先的异构选择性。