Asymmetric synthesis of 4-amino-2,3,4-trideoxyaldonic acids: novel gaba c-glycoconjugates
作者:Gloria Rassu、Luigi Pinna、Pietro Spanu、Fausta Ulgheri、Mara Cornia、Franca Zanardi、Giovanni Casiraghi
DOI:10.1016/s0040-4020(01)80163-0
日期:1993.1
Stereochemically defined 4-amino-2,3,4-trideoxyaldonic acids 4, representatives of a new progeny of C-glycosylated GABAs, have been synthesized from the readily available aldehydo precursors 1 in three steps and 60-75% overall yields. The key reaction is the SnCl4-assisted regio- and diastereoselective homologation of 1 with the nitrogen-containing five-membered ring siloxydiene TBSOP.