Squaric acid Derivatives of formula (1) are described:
1
wherein
R
1
is an integrin binding group;
R
2
is a hydrogen atom or a C
1-6
alkyl group;
L
1
is a covalent bond or a linker atom or group;
n is zero or the integer 1;
Alk
1
is an optionally substituted aliphatic chain;
R
3
is a hydrogen atom or an optionally substituted heteroaliphatic, cycloaliphatic, heterocycloaliphatic, polycycloaliphatic, polyheterocycloaliphatic, aromatic or heteroaromatic group:
and the salts, solvates, hydrates and N-oxides thereof.
The compounds are able to inhibit the binding of integrins to their ligands and are of use in the prophylaxis and treatment of immune of inflammatory disorders, or disorders involving the inappropriate growth or migration of cells.
SQUARIC ACID DERIVATIVES AS CELL ADHESION MOLECULES
申请人:Celltech R&D Limited
公开号:EP1181266A1
公开(公告)日:2002-02-27
US6518283B1
申请人:——
公开号:US6518283B1
公开(公告)日:2003-02-11
[EN] SQUARIC ACID DERIVATIVES AS CELL ADHESION MOLECULES<br/>[FR] DERIVES DE L'ACIDE SQUARIQUE COMME MOLECULES D'ADHESION CELLULAIRE
申请人:CELLTECH CHIROSCIENCE LTD
公开号:WO2000073260A1
公开(公告)日:2000-12-07
Squaric acid Derivatives of formula (1) are described: wherein R1 is an integrin binding group; R2 is a hydrogen atom or a C¿1-6? alkyl group; L?1¿ is a covalent bond or a linker atom or group; n is zero or the integer 1; Alk1 is an optionally substituted aliphatic chain; R3 is a hydrogen atom or an optionally substituted heteroaliphatic, cycloaliphatic, heterocycloaliphatic, polycycloaliphatic, polyheterocycloaliphatic, aromatic or heteroaromatic group: and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders, or disorders involving the inappropriate growth or migration of cells.
Influence of the aromatic moiety in α- and β-arylalanines on their biotransformation with phenylalanine 2,3-aminomutase from Pantoea agglomerans
isomerization of various racemic α- and β-arylalanines catalysed by phenylalanine 2,3-aminomutase from Pantoea agglomerans (PaPAM) was investigated. Both α- and β-arylalanines were accepted as substrates when the aryl moiety was relatively small, like phenyl, 2-, 3-, 4-fluorophenyl or thiophen-2-yl. While 2-substituted α-phenylalanines bearing bulky electron withdrawing substituents did not react, the corresponding