Synthesis and evaluation of benzoxazinone derivatives on activity of human neutrophil elastase and on hemorrhagic shock-induced lung injury in rats
摘要:
A new series of benzoxazinone analogs were designed, synthesized, and assayed to determine their effects on superoxide anion generation and neutrophil elastase (NE) release in formyl-L-methionyl-L-leucyl-L-phenylalanine (FMLP)-activated human neutrophils. Of these, compounds 6-10 showed a potent dual inhibitory effect on NE release and superoxide anion generation. In contrast, compounds 11-15 exhibited highly selective and potent inhibitory activities on NE release. These results indicate that the inhibitory activity on NE release in FMLP-activated human neutrophils depended on the position of chloro-substituent in the A ring. On the other hand, 13 significantly attenuated the increase in myeloperoxidase (MPO) activity and edema in the lung of rats after trauma-hemorrhagic shock. Therefore, these compounds could be developed as new NE inhibitors. (c) 2010 Elsevier Masson SAS. All rights reserved.
BENZOXAZINONE COMPOUND, METHOD FOR PRODUCING THE SAME, AND PHARMACEUTICAL COMPOSITION CONTAINING THE SAME
申请人:Hsieh Pei-Wen
公开号:US20110319611A1
公开(公告)日:2011-12-29
A benzoxazinone compound having the following formula (I):
wherein
one of R
1
and R
2
is H, and the other of R
1
and R
2
is a halogen group, and R
1
and R
2
cannot be the same at the same time; and
R
3
, R
4
, R
5
, R
6
, and R
7
are independently selected from the group consisting of H, a halogen group, a C
1
-C
4
alkyl group, and a C
1
-C
4
alkoxyl group.
A new series of benzoxazinone analogs were designed, synthesized, and assayed to determine their effects on superoxide anion generation and neutrophil elastase (NE) release in formyl-L-methionyl-L-leucyl-L-phenylalanine (FMLP)-activated human neutrophils. Of these, compounds 6-10 showed a potent dual inhibitory effect on NE release and superoxide anion generation. In contrast, compounds 11-15 exhibited highly selective and potent inhibitory activities on NE release. These results indicate that the inhibitory activity on NE release in FMLP-activated human neutrophils depended on the position of chloro-substituent in the A ring. On the other hand, 13 significantly attenuated the increase in myeloperoxidase (MPO) activity and edema in the lung of rats after trauma-hemorrhagic shock. Therefore, these compounds could be developed as new NE inhibitors. (c) 2010 Elsevier Masson SAS. All rights reserved.