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J Med Chem ; 52(11): 3441-4, 2009 Jun 11.
Article in English | MEDLINE | ID: mdl-19432431

ABSTRACT

The development of potent gamma-secretase inhibitors having substituted heterocycles attached to a benzobicyclo[4.2.1]nonane core is described. This work led to the identification of [6S,9R,11R]-2',3',4',5,5',6,7,8,9,10-decahydro-2-(5-(4-fluorophenyl)-1-methylpyrazol-3-yl)-5'-(2,2,2-trifluoroethyl)spiro[6,9-methanobenzocyclooctene-11,3'-[1,2,5]thiadiazole] 1',1'-dioxide (16), which has excellent in vitro potency (0.06 nM) and which reduced amyloid-beta in APP-YAC mice with an ED(50) of 1 mg/kg (po). 16 had a good pharmacokinetic profile in three preclinical species.


Subject(s)
Amyloid Precursor Protein Secretases/antagonists & inhibitors , Amyloid beta-Peptides/antagonists & inhibitors , Cyclooctanes/pharmacology , Protease Inhibitors/pharmacology , Thiadiazoles/pharmacology , Administration, Oral , Animals , Cyclooctanes/administration & dosage , Cyclooctanes/chemical synthesis , Cyclooctanes/pharmacokinetics , Inhibitory Concentration 50 , Mice , Protease Inhibitors/administration & dosage , Protease Inhibitors/chemical synthesis , Protease Inhibitors/pharmacokinetics , Thiadiazoles/administration & dosage , Thiadiazoles/chemical synthesis , Thiadiazoles/pharmacokinetics
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