2-Iminopiperidine and Other 2-Iminoazaheterocycles as Potent Inhibitors of Human Nitric Oxide Synthase Isoforms
摘要:
A series of 2-iminoazaheterocycles. have been prepared and shown to be patent inhibitors of human nitric oxide synthase (NOS) isoforms. This series includes cyclic amidines ranging from five- to nine-membered rings, of which 2-iminopiperidine and 2-iminohomopiperidine were the most potent inhibitors, with IC50 values of 1.0 and 2.0 mu M, respectively, for human inducible nitric oxide synthase. This series of cyclic inhibitors was further expanded to include analogs with heteroatoms in the S-position of the six-membered ring. This modification was tolerated for sulfur and oxygen, but nitrogen reduced the inhibitory potency. The oral administration of 2-iminopiperidine in lipopolysaccharide (LPS)-treated rats inhibited the LPS-induced increase in plasma nitrite/nitrate levels in a dose-dependent manner, demonstrating its ability to inhibit inducible NOS activity in vivo. These cyclic amidines represent a new class of potent NOS inhibitors and the foundation for potential therapeutic agents.
Substituted Quinazoline or Pyridopyrimidine Derivative
申请人:Mitsuya Morihiro
公开号:US20080032996A1
公开(公告)日:2008-02-07
The present invention provides a compound having a glucokinase activating action being useful for prevention or treatment of diabetes mellitus, etc. being represented by the formula (I):
X is nitrogen atom, etc.; Y is oxygen atom, etc.; R
1
is an optionally substituted five to six-membered heteroaryl group, etc.; R
2
is hydrogen atom or fluorine atom; and ring A is a monocyclic or bicyclic heteroaryl group which may have a substituent represented by the formula (II)]
or a pharmaceutically acceptable salt thereof.