Synthesis, antiinflammatory activity and molecular orbital studies of a series of benzylideneaminoxypropionic acids substituted on the phenyl ring
摘要:
An examination of the antiinflammatory properties of certain beta-aminoxypropionic acids A (AOPAs) previously synthe- sized as analogs of antiinflammatory drugs with an arylacetic structure B (ArAAs), indicated that the most active acid is the (E)-3-(benzylideneaminoxy)-propionic acid (1), which was found to possess an activity comparable to that of Diclofenac (8). In an attempt to verify whether appropriate substitutions on the aromatic ring of 1 can modulate the antiinflammatory properties of this class of drugs, a series of benzylideneaminoxypropionic acids (BAOPAs) were synthesized, in which the phenyl group is substituted, in its 3 possible positions, by groups possessing different electronic, steric, and lipophilic characteristics. The antiinflammatory activity of the new compounds was determined by carrageenan-induced rat paw edema, using Diclofenac (8) as the reference drug. The pharmacological results revealed that among the BAOPAs examined, the most active are the m-chloro (7b) and p-ethoxy (7p) substituted compounds, which exhibit an antiinflammatory activity comparable to that of 1. Quantum mechanical calculations were also carried out in order to gain insight into the possible correlations between the pharmacological activity observed and the electronic and conformational effects induced by the presence of the various substituents.
Die Erfindung betrifft neue substituierte Pyrimidine der Formel (I), in welcher R1, R2, R3, R4, Q, X und n die in der Beschreibung angegebene Bedeutung haben,sowie Verfahren und Zwischenprodukte zu ihrer Herstellung und ihre Verwendung als Pflanzenbehandlungsmittel, insbesondere als Herbizide.
Pyrimidine derivatives as modulators of insulin-like growth factor-1 receptor (igf-i)
申请人:Barlaam Bernard
公开号:US20050054638A1
公开(公告)日:2005-03-10
The invention provides compounds of formula
in which R
1
, R
2
, R
3
and R
4
have the meanings defined in the specification; processes for the preparation; pharmaceutical compositions containing them; a process for preparing the pharmaceutical compositions; and their use in therapy.
The present invention relates to compounds of formula I:
or a pharmaceutically acceptable salt or mixtures thereof that inhibit serine protease activity, particularly the activity of hepatitis C virus NS3-NS4A protease.
The present invention relates to compounds of formula I:
or a pharmaceutically acceptable salt or mixtures thereof that inhibit serine protease activity, particularly the activity of hepatitis C virus NS3-NS4A protease.
The invention provides compounds of formula
in which R
1
, R
2
, R
3
and R
4
have the meanings defined in the specification; processes for their preparation; pharmaceutical compositions containing them; a process for preparing the pharmaceutical compositions; and their use in therapy.