The Overman rearrangement in carbohydrate chemistry: stereoselective synthesis of functionalized 3-amino-3,6-dihydro-2H-pyrans and incorporation in peptide derivatives
作者:Ana Montero、Enrique Mann、Bernardo Herradón
DOI:10.1016/j.tetlet.2004.11.109
日期:2005.1
A stereocontrolled synthesis of an unsaturated sugar bearing two amino groups (one of them masked as an azide), using an Overman rearrangement as key step, is described. This scaffold is used to prepare two peptides having aromatic fragments, which have shown activity as calpain inhibitors.
Phenylalanine derivatives of formula (1) are described:
1
wherein
R is a carboxylic acid or a derivative thereof;
L
1
is a linker atom or group;
Ar is an optionally substituted aromatic group; and the salts, solvates, hydrates and N-oxides thereof.
The compounds are able to inhibit the binding of alpha4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.
PHENYLALANINE DERIVATIVES AS INHIBITORS OF ALPHA4 INTEGRINS
申请人:CELLTECH THERAPEUTICS LIMITED
公开号:EP1056714B1
公开(公告)日:2004-08-11
US6555562B1
申请人:——
公开号:US6555562B1
公开(公告)日:2003-04-29
[EN] PHENYLALANINE DERIVATIVES AS INHIBITORS OF ALPHA4 INTEGRINS<br/>[FR] DERIVES DE PHENYLALANINE EN TANT QU'INHIBITEURS D'INTEGRINES ALPHA 4
申请人:CELLTECH THERAPEUTICS LIMITED
公开号:WO1999043642A1
公开(公告)日:1999-09-02
(EN) Phenylalanine derivatives of formula (1) are described: wherein R is a carboxylic acid or a derivative thereof; L1 is a linker atom or group; Ar is an optionally substituted aromatic group; and the salts, solvates, hydrates and N-oxides thereof. The compounds are able to inhibit the binding of alpha4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.(FR) L'invention concerne des dérivés de phénylalanine représentés par la formule (1) dans laquelle R représente un acide carboxylique ou un de ses dérivés; L1 représente un atome ou un groupe de liaison; Ar représente un groupe aromatique éventuellement substitué; ainsi que leurs sels, solvates, hydrates et N-oxydes. Ces composés sont capables d'inhiber la fixation d'intégrines alpha 4 à leurs ligands et sont utiles pour la prophylaxie et le traitement de maladies immunes et inflammatoires.