Trifluoromethoxy Substituted Anilines: Metalation as the Key Step for Structural Elaboration
摘要:
Trifluoromethoxy-substituted anilines undergo hydrogen/lithium permutation (''metalation'') with optional site selectivity depending on the N-protective group employed. N-tert-Butoxycarbonyl-2- and -4-(trifluoromethoxy)aniline react with tert-butyllithium. at the nitrogen-adjacent 6- and 2-position affording, after electrophilic trapping, products 1-6. In contrast, deprotonation of the para isomer occurs at the oxygen-neighboring 3-position, giving rise to the acid 12, when the amino group is carrying two trimethylsilyl groups. sec-Butyllithium attacks 3-trifluoromethoxy-N-mono-(trimethylsilyl)aniline at the 2-position, but 3-trifluoromethoxy-N,N-bis(trimethylsilyl)aniline at the 4-position to provide respectively the acids 10 and 11 after carboxylation. The synthesis of two new benzodiazepines illustrates (19 and 22) the preparative potential of the aniline functionalization mediated by organometallic reagents.
Diamines as modulators of chemokine receptor activity
申请人:——
公开号:US20030060459A1
公开(公告)日:2003-03-27
The present application describes modulators of MCP-1 of formula (I):
1
or pharmaceutically acceptable salt forms thereof, useful for the prevention of asthma, multiple sclerosis, artherosclerosis, and rheumatoid arthritis.
Bicyclic And Tricyclic Compounds As KAT II Inhibitors
申请人:Claffey Michelle M.
公开号:US20100324043A1
公开(公告)日:2010-12-23
Compounds of Formula X:
wherein A, X, Y, Z, R
5
, R
6a
, and R
6b
are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other neurodegenerative and/or neurological disorders in mammals, including humans.
Fused Bicyclic Derivatives of 2,4-Diaminopyrimidine as ALK and c-MET Inhibitors
申请人:Ahmed Gulzar
公开号:US20120165519A1
公开(公告)日:2012-06-28
The present invention provides a compound of formula I or II
or a pharmaceutically acceptable salt form thereof, wherein R
1
, R
2
, R
3
, R
4
, R
5
, A
1
, A
2
, A
3
, A
4
, and A
5
, are as defined herein. The compounds of formula I or II have ALK and/or c-Met inhibitory activity, and may be used to treat proliferative disorders.
Bicyclic and tricyclic compounds as KAT II inhibitors
申请人:Pfizer Inc.
公开号:US08183238B2
公开(公告)日:2012-05-22
Compounds of Formula X:
wherein A, X, Y, Z, R5, R6a, and R6b are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other neurodegenerative and/or neurological disorders in mammals, including humans.
Fused bicyclic derivatives of 2,4-diaminopyrimidine as ALK and c-MET inhibitors
申请人:Ahmed Gulzar
公开号:US08552186B2
公开(公告)日:2013-10-08
The present invention provides a compound of formula I or II
or a pharmaceutically acceptable salt form thereof, wherein R1, R2, R3, R4, R5, A1, A2, A3, A4, and A5, are as defined herein. The compounds of formula I or II have ALK and/or c-Met inhibitory activity, and may be used to treat proliferative disorders.