Rapid synthesis of imidazo[4,5-b]pyridine containing polycyclics by means of palladium-catalyzed amidation of 2-chloro-3-nitropyridine
摘要:
Regioselective nucleophilic substitution of 2-chloro 3-nitropyridine with heterocyclic amides under Pd-catalyzed reaction conditions as described by Buchwald yielded imidazo [4,5-b] pyridine-containing polycyclics as novel scaffolds. (C) 2009 Elsevier Ltd. All rights reserved.
The present invention provides a compound which has the effect of PDE inhibition, and which is useful as an agent for preventing or treating schizophrenia. The compound is represented by the formula (I):
wherein the symbols are defined in the specification.
FUSED HETEROCYCLIC COMPOUNDS AS PHOSPHODIESTERASES (PDES) INHIBITORS
申请人:Taniguchi Takahiko
公开号:US20130172328A1
公开(公告)日:2013-07-04
The present invention provides a compound which has the effect of PDE inhibition, and which is useful as an agent for preventing or treating schizophrenia or so on represented by the formula (I):