4,5-Diamino-3-Halo-2-Hydroxybenzoic Acid Derivatives and Preparations Thereof
申请人:LEE AN-RONG
公开号:US20120101157A1
公开(公告)日:2012-04-26
Disclosed are 4,5-diamino-3-halo-2-hydroxybenzoic acid derivatives and manufactures thereof. The 4,5-diamino-3-halo-2-hydroxybenzoic acid derivatives are presented by formula (I):
wherein R
1
group is H, CH
3
, or C
2
H
5
; R
2
group is H, or Br; R
3
group is CH
3
, or C
3
H
7
; and R
4
group is H, or C(═NH)—NH
2
. 4,5-diamino-3-halo-2-hydroxybenzoic acid derivatives provided here were non-toxic to MDCK cells, particularly compounds 6
a
, 6
b
, 6
c
, 6
e
, 6
f
, 7
a
, 7
b
and 8 had better anti-H1N1 activity. In the future, these compounds can be used to focus on viral neuraminidases as targets to develop effective anti-influenza drugs.