Synthesis and Monoamine Oxidase Inhibitory Activity of New Pyridazine-, Pyrimidine- and 1,2,4-Triazine-Containing Tricyclic Derivatives
摘要:
A number of condensed azines, mostly belonging to the families of indeno-fused pyridazines (1), pyrimidines (13), and 12,4-triazines (4, 5), were synthesized and evaluated in vitro as monoamine oxidase (MAO) A and B inhibitors. Most of them showed higher inhibition potency toward MAO-B, the most effective one being 3-(3-nitrophenyl)-9H-indeno[1,2-e] [1,2,4]triazin-9-one (4c), which displayed an IC50 value of 80 nM and proved to be I 0-fold more potent than its [2,1-e] fusion isomer 5. Replacing the 3-phenyl group of the known indeno[12-c]pyridazin-5-one MAO-B inhibitors with a flexible phenoxymethyl group enhanced the inhibitory potency. The inhibition data highlighted the importance of the aza-heterocyclic scaffold in affecting the MAO isoform selectivity. The 3-phenyl derivatives with type 1, 4, and 5 scaffolds were inhibitors of MAO-B with little or no MAO-A effect, whereas 2- or 3-phenyl derivatives of type 2 and 3 pyrimidine-containing fusion isomers inhibited both isoenzymes with a structure-dependent preference toward MAOA.
An organometallic iridium complex having high emission efficiency and high heat resistance and emitting yellow light is provided as a novel substance. The organometallic iridium complex includes iridium and a ligand and includes a structure represented by General Formula (G1). The ligand includes a 5H-indeno[1,2-d]pyrimidine skeleton and an aryl group bonded to the 4-position of the 5H-indeno[1,2-d]pyrimidine skeleton. The 3-position of the 5H-indeno[1,2-d]pyrimidine skeleton and the aryl group are bonded to the iridium.
In the formula, Ar represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and each of R
1
to R
7
independently represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.
Polymeric Reagents Comprising a Terminal Vinylic Group and Conjugates Formed Therefrom
申请人:Culbertson Sean M.
公开号:US20100048707A1
公开(公告)日:2010-02-25
The present invention provides conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates. Methods of making polymeric reagents and conjugates, as well as methods for administering conjugates and compositions, are also provided.
PHARMACEUTICAL COMPOSITIONS AND METHODS FOR DELIVERING SUCH COMPOSITIONS
申请人:Bentley Michael D.
公开号:US20120258912A1
公开(公告)日:2012-10-11
The present invention provides pharmaceutical compositions comprising a pharmaceutically acceptable excipient and a conjugate having a degradable linkage. The conjugates include at least one of each the following: an aromatic moiety comprising an ionizable hydrogen atom, a spacer moiety, and a water-soluble polymer. Methods for delivering such compositions are also provided.
POLYMERIC REAGENTS COMPRISING A TERMINAL VINYLIC GROUP AND CONJUGATES FORMED THEREFROM
申请人:Culbertson Sean M.
公开号:US20120318701A1
公开(公告)日:2012-12-20
The present invention provides conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates. Methods of making polymeric reagents and conjugates, as well as methods for administering conjugates and compositions, are also provided.