Diethoxymethyl Protected Pyrroles: Synthesis and Regioselective Transformations
作者:Markus Bergauer、Peter Gmeiner
DOI:10.1055/s-2001-18445
日期:——
Treatment of the acceptor-substituted pyrroles 1a-k with neat triethyl orthoformate gives access to the diethoxymethyl (DEM) protected derivatives 2a-k in high yield. Convenient and mild cleavage was achieved by subsequent treatment of the DEM-pyrroles 2a-k with trifluoroacetic acid in acetonitrile and aqueous NaOH at room temperature. DEM protection proved suitable for a variety of regioselective transformations involving directed ortho-metalation and iodine-magnesium exchange processes. Furthermore, electrophilic halogenations and Pd-catalyzed coupling reactions were also carried out.
Amino-5-(5-membered)hetero-arylimidazolone compounds and the use thereof for beta-secretase modulation
申请人:Malamas Sotirios Michael
公开号:US20070004786A1
公开(公告)日:2007-01-04
The present invention provides a 2-amino-5-heteroaryl-5-phenylimidazolone compound of formula I
The present invention also provides methods for the use thereof to inhibit β-secretase (BACE) and treat β-amyloid deposits and neurofibrillary tangles
Amino-5-(5-membered)hetero-arylimidazolone compounds and the use thereof for β-secretase modulation
申请人:Wyeth
公开号:US07417047B2
公开(公告)日:2008-08-26
The present invention provides a 2-amino-5-heteroaryl-5-phenylimidazolone compound of formula I
The present invention also provides methods for the use thereof to inhibit β-secretase (BACE) and treat β-amyloid deposits and neurofibrillary tangles.
Amino-5-(5-membered)heteroarylimidazolone Compounds And The Use Thereof For Beta-secretase Modulation
申请人:Malamas Michael Sotirios
公开号:US20100168106A1
公开(公告)日:2010-07-01
The present invention provides a 2-amino-5-heteroaryl-5-phenylimidazolone compound of formula I
The present invention also provides methods for the use thereof to inhibit β-secretase (BACE) and treat β-amyloid deposits and neurofibrillary tangles