Phenylalanine derivatives of formula (1) are described:
in which
L1 is a linker atom or group;
A is a chain —[C(R7)(R8)]pY[C(R9)(R10)]q— in which Y is a sulphur atom or a —S(O)— or —S(O)2— group, R7, R8, R9 and R10, which may be the same or different, is each a hydrogen atom or a straight or branched alkyl or optionally substituted aromatic group, or R7 and R8 together with the carbon atom to which they are attached, or R9 and R10 together with the carbon atom to which they are attached, each forms a C3-7cycloalkyl group, and p and q, which may be the same or different, is each zero or an integer 1 or 2, provided that when one of p or q is zero the other is an integer 1 or 2;
L2 is a linker group selected from —C(O)—, —C(O)O—, —C(S)—, —S(O)2—, —CON(R11)—, [where R11 is a hydrogen atom or a straight or branched alkyl group], —CSN(R11)—, —SON(R11)— or SO2N(R11)—;
R is a carboxylic acid or a derivative thereof;
and the salts, solvates and hydrates thereof.
The compounds are able to inhibit the binding of &agr;4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.
描述了公式(1)的苯丙
氨酸衍
生物:
其中
L1是连接原子或基团;
A是链 -[C(R7)(R8)] pY[C(R9)(R10)] q-,其中Y是
硫原子或-S(O)-或-S(O)2-基团,R7、R8、R9和R10可以相同也可以不同,每个都是氢原子或直链或支链烷基或可选择取代的芳香族基团,或R7和R8与它们所连接的碳原子一起,或R9和R10与它们所连接的碳原子一起,形成C3-7环烷基团,p和q可以相同也可以不同,每个都是零或整数1或2,前提是当p或q之一为零时,另一个为整数1或2;
L2是从 -C(O)-,-C(O)O-,-C(S)-,-S(O)2-,-CON(R11)-,[其中R11是氢原子或直链或支链烷基],-CSN(R11)-,-SON(R11)-或SO2N(R11)-中选择的连接基团;
R是
羧酸或其衍
生物;
以及其盐、溶剂合物和
水合物。
这些化合物能够抑制α4整合素与其
配体的结合,可用于预防和治疗免疫或炎症性疾病。