The invention provides a multistep synthesis for the preparation of 4,5-diamino shikimic acid derivatives of formula
1
wherein R
1
, R
2
, R
3
and R
4
are defined in the specification, starting from furan. 4,5-Diamino shikimic acid derivatives are potent inhibitors of viral neuraminidase.
                            该发明提供了一种多步合成方法,用于从
呋喃起始制备式1中R1、R2、R3和R4在规范中定义的4,5-二
氨基香唑酸衍
生物,4,5-二
氨基香唑酸衍
生物是病毒神经
氨基酸酶的有效
抑制剂。