Elaborate ligand-based pharmacophore exploration and QSAR analysis guide the synthesis of novel pyridinium-based potent β-secretase inhibitory leads
摘要:
beta-Secretase (BACE) inhibitors have potential as anti-Alzheimer's disease treatments prompting us to explore the pharmacophoric space of 129 known BACE inhibitors. QSAR analysis was employed to select optimal combination of pharmacophoric models and 2D physicochemical descriptors capable of explaining bioactivity variation (r(2) = 0.88, F = 60.48, r(LOO)(2) = 0.85, r(PRESS)(2) against 25 external test inhibitors = 0.71). We were obliged to use ligand efficiency as the response variable because the logarithmic transformation of bioactivities failed to access self-consistent QSAR models. Three pharmacophoric models emerged in the successful QSAR equation suggesting at least three binding modes accessible to ligands within BACE binding pocket. QSAR equation and pharmacophoric models were validated through ROC curves and were employed to guide synthesis of novel pyridinium-based BACE inhibitors. The best inhibitor illustrated an IC50 value of 1.0 mu M against BACE. (c) 2010 Elsevier Ltd. All rights reserved.
Anticonvulsant activity of 2- and 3-aminobenzanilides
摘要:
A series of 2- and 3-aminobenzanilides derived from ring-alkylated anilines were prepared and evaluated for anticonvulsant activity. These benzanilides were prepared in the course of studies designed to determine the relationship between the benzamide structure and anticonvulsant effects. The compounds were tested in mice against seizures induced by maximal electroshock (MES) and pentylenetetrazole and in the rotorod assay for neurologic deficit. The 3-aminobenzanilide derived from 2,6-dimethylaniline, 21, was the most potent anti-MES compound, with an ED50 of 13.48 mg/kg and a protective index of 21.11 (PI = TD50/ED50). The activity profile for 21 compares favorably with that for phenobarbital and phenytoin.
The present invention is directed to a novel binding site for a glycogen phosphorylase inhibitor found within a glycogen phosphorylase enzyme. The novel binding site allows the design novel of glycogen phosphorylase inhibitors.
The invention provides methods of treating prophylactically an individual in whom Type 2 diabetes mellitus has not yet presented, but in whom there is an increased risk of developing such condition, which methods comprise administering to an individual in need thereof an effective amount of a glycogen phosphorylase inhibitor; effective amounts of a glycogen phosphorylase inhibitor and a non-glycogen phosphorylase inhibiting anti-diabetic agent; or effective amounts of a glycogen phosphorylase inhibitor and an anti-obesity agent.
The invention further provides methods of treating prophylactically an individual in whom Type 2 diabetes mellitus has not yet presented, but in whom there is an increased risk of developing such condition, which methods comprise administering to an individual in need thereof a pharmaceutical composition comprising effective amounts of a glycogen phosphorylase inhibitor and a non-glycogen phosphorylase inhibiting anti-diabetic agent; or effective amounts of a glycogen phosphorylase inhibitor and an anti-obesity agent.
This invention relates to certain 5-acyl-2-oxo-indole-3-carboxamides useful as inhibitors of glycogen phosphorylase, methods of treating glycogen phosphorylase dependent diseases or conditions with such compounds and pharmaceutical compositions comprising such compounds. This invention also relates to pharmaceutical compositions comprising those 5-acyl-2-oxo-indole-3-carboxamides in combination with antidiabetes agents and methods of treating glycogen phosphorylase dependent diseases or conditions with such compositions.
METHOD OF INHIBITION OF HUMAN GLYCOGEN PHOSPHORYLASE
申请人:——
公开号:US20020031816A1
公开(公告)日:2002-03-14
The present invention is directed to a novel binding site for a glycogen phosphorylase inhibitor found within a glycogen phosphorylase enzyme. The novel binding site allows the design novel of glycogen phosphorylase inhibitors.
The invention is concerned with novel sulfonamide derivatives of formula (I)
wherein R
2
, R
3
, R
4
, A, X, Y
1
, Y
2
, Y
3
, Y
4
and Z
1
are as defined in the description and in the claims, as well as physiologically acceptable salts and esters thereof. These compounds inhibit L-CPT1 and can be used as medicaments.