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 and structures of complexes with axially chiral isoquinolinyl-naphtholate ligands
作者:Ruth H. Howard、Carlos Alonso-Moreno、Lewis M. Broomfield、David L. Hughes、Joseph A. Wright、Manfred Bochmann
DOI:10.1039/b907982c
日期:——
non-bridging ligands LH have opposite stereochemistry. The reaction of LH-H with Pd(acac)2 afforded the N,O chelate Pd(acac)(LH) (10), whereas towards K2PtCl4 the same ligand acts as an N-donor only, to give trans-PtCl2(LH-H)2 (11) in which the OH groups are hydrogen-bonded to one of the two chloride ligands. The more bulky ligand with a t-butyl substituent in the 3-position of the isoquinolinyl ring
Novel carbapenem derivatives of quarternary salt type
申请人:——
公开号:US20030022881A1
公开(公告)日:2003-01-30
An objective of the present invention is to provide carbapenem derivatives which have potent antibiotic activity against MRSA, PRSP, Influenzavirus, and &bgr;-lactamase-producing bacteria and are stable against DHP-1. The compounds according to the present invention are compounds represented by formula (I) or pharmaceutically acceptable salts thereof:
1
wherein R
1
represents H or methyl; R
2
and R
3
each independently represent H, halogen, lower alkyl or the like; R
4
represents optionally substituted lower alkylthio or the like; and R
5
represents optionally substituted lower alkyl or the like.
An objective of the present invention is to provide carbapenem derivatives which have potent antibiotic activity against MRSA, PRSP, Influenzavirus, and &bgr;-lactamase-producing bacteria and are stable against DHP-1. The compounds according to the present invention are compounds represented by formula (I) or pharmaceutically acceptable salts thereof:
1
wherein R
1
represents H or methyl; R
2
and R
3
represent H, a halogen atom, alkyl or the like; and R
4
represents substituted lower alkylthio or the like.
This invention relates to a process for preparation of the compounds of lignan series in a regioselective manner. This invention provide a process for preparing a compound of the formula (I): which process is characterized by that a lactone compound represented by the formula (II) is allowed to react with a compound of the formula: R.sup.7 Cl in the presence of a base, then the resulting compound is subjected to addition reaction with an acetylenic compound of the formula (III), then the resulting compound is reduced; in which R.sup.1 is alkyl, cycloalkyl, cycloalkyl lower alkyl, or aralkyl and the like; R.sup.2 and R.sup.3 each is lower alkoxy and the like; R.sup.4 is lower alkoxy or hydrogen; and R.sup.5 and R.sup.6 each is lower alkyl; and R.sup.7 is tri(lower alkyl)silyl. ##STR1##