Synthesis of novel 2-perfluoroacylcyclohexane-1,3-diones
摘要:
A one-pot synthesis of 2-perfluoroalkanoylcyclohexane-1,3-diones via C-acylation of cyclohexane-1,3-diones with N-perfluoroacylimidazole as an acylating agent is reported. A reaction was examined with isolated N-trifluoroacetylimidazole and with N-perfluoroacylimidazoles generated in situ from perfluorocarboxylic acid anhydrides or perfluorocarboxylic acids. (c) 2006 Elsevier B.V. All rights reserved.
Synthesis of aromatic aldehydes via 2-aryl-n,n'-diacyl-4-imidazolines
作者:Jan Bergman、Lars Renström、Birger Sjöberg
DOI:10.1016/0040-4020(80)80230-4
日期:1980.1
Diacylimidazolium ions yield adducts with aromatic compounds. Thus the N,N'-diacetylimidazolium ion and indole gives 1,3-diacetyl-2-(3-indolyl)-4-imidazoline. Less reactive substrates such as thiophene, anisole and 1,3-dimethylbenzene fail to react with this reagent but do form adducts (e.g. 1,3-bis-(trifluoroacetyl)-2-(2-thienyl)-4-imidazoline) with an imidazole/trifluoroacetic anhydride reagent.
Sulfamoylheteroaryl pyrazole compounds as anti-inflammatory/analgesic agents
申请人:PFIZER INC.
公开号:US20030144280A1
公开(公告)日:2003-07-31
This invention relates to a compound of the formula:
1
or a pharmaceutically acceptable salt thereof, wherein A and R
1
are each an optionally substituted 5 to 6-membered heteroaryl, wherein the heteroaryl is optionally fused to a carbocyclic ring or 5 to 6-heteroaryl; R
2
is NH
2
; R
3
and R
4
are each hydrogen, halo, (C
1
-C
4
)alkyl optionally substituted with halo and the like; and X
1
to X
4
are each hydrogen, halo, hydroxy, (C
1
-C
4
)alkyl optionally substituted with halo and the like. These compounds have COX-2 inhibiting activity and thus useful for treating or preventing inflammation or other COX-2 related diseases.
Synthesis of [11C]celecoxib: a potential PET probe for imaging COX-2 expression
作者:Jaya Prabhakaran、Vattoly J. Majo、Norman R. Simpson、Ronald L. Van Heertum、J. John Mann、J. S. Dileep Kumar
DOI:10.1002/jlcr.1002
日期:2005.10.30
onamide or celecoxib (6) in 30% yield. However, under identical conditions, synthesis of [11C]celecoxib ([11C]6) was unsuccessful. Instead, trapping [11C]CH3I in an argon purged solution of catalytic amounts of Pd2(dba)3 and tri-o-tolylphosphine followed by the addition of the precursor 5 in DMF under argon and heating the mixture at 135°C for 4 min resulted in the incorporation of [11C]CH3 group.
Substituted pyrazolyl benzenesulfonamides for use in veterinary therapies
申请人:G.D. Searle & Co.
公开号:US05756529A1
公开(公告)日:1998-05-26
A method of using pyrazolyl benzenesulfonamide compounds in treating inflammation and inflammation-related disorders in companion animals is disclosed.
揭示了一种在治疗伴侣动物的炎症和与炎症相关的疾病中使用吡唑基苯磺酰胺化合物的方法。
Substituted pyrazolyl benzenesulfonamides for the treatment of
申请人:G.D. Searle & Co.
公开号:US05760068A1
公开(公告)日:1998-06-02
A class of pyrazolyl benzenesulfonamide compounds is described for use in treating inflammation and inflammation-related disorders. Compounds of particular interest are defined by Formula II: ##STR1## or a pharmaceutically-acceptable salt thereof.