Exploration of orally available calpain inhibitors: Peptidyl α-ketoamides containing an amphiphile at P3 site
摘要:
A novel series of dipeptidyl alpha-ketoamide derivatives with amphiphile was designed and synthesized as water-soluble calpain inhibitors. The introduction of amphiphiles at the P3 site increased water solubility without loss of membrane permeability and provided the oral available inhibitors. Extension of the ethylene glycol chain at the P3 site led to an improvement in persistence of plasma levels. In particular, introduction of a combination of a diethylene glycol methyl ether moiety at the P3 site, a phenylalanine residue at the P1 site and a cyclopropyl moiety at the P' site was the most effective modification for an increase in plasma drug exposure. (c) 2005 Elsevier Ltd. All rights reserved.
[EN] ALPHA-KETOAMIDE DERIVATIVE, AND PRODUCTION METHOD AND USE THEREOF<br/>[FR] DERIVE D'ALPHA-CETOAMIDE, SON PROCEDE DE PRODUCTION ET D'UTILISATION
申请人:SENJU PHARMA CO
公开号:WO2005056519A1
公开(公告)日:2005-06-23
The present invention provides a compound represented by the formula (I): (INSERT CHEMICAL FORMULA) (wherein R1 is a lower alkyl substituted by a lower alkoxy or a heterocyclic group, or a heterocyclic group; R2 is a lower alkyl optionally substituted by a phenyl; and R3 is a lower alkyl optionally substituted by a halogen, a lower alkoxy or a phenyl, or a fused polycyclic hydrocarbon group), which is well absorbed orally, exhibits durability of good blood level and has potent calpain inhibitory activity.
An object of the present invention is to provide a medicament and method for treating lissencephaly patients. The present invention provides a lissencephaly therapeutic or preventive agent comprising a compound represented by the general formula (I):
wherein R1 is lower alkyl substituted with lower alkoxy, lower alkyl substituted with a heterocyclic group, a heterocyclic group, or a group represented by the formula (IIa):
wherein
R4 is lower alkyl, R5 is lower alkylene, and m is an integer of 1 to 6;
R2 is lower alkyl optionally substituted with phenyl; and
R3 is lower alkyl optionally substituted with halogen, lower alkoxy, or phenyl; condensed polycyclic hydrocarbon; or hydrogen.
Alpha-ketoamide derivative, and production method and use thereof
申请人:Shirasaki Yoshihisa
公开号:US20070004643A1
公开(公告)日:2007-01-04
The present invention provides a compound represented by the formula (I):
(wherein
R
1
is a lower alkyl substituted by a lower alkoxy or a heterocyclic group, or a heterocyclic group;
R
2
is a lower alkyl optionally substituted by a phenyl; and
R
3
is a lower alkyl optionally substituted by a halogen, a lower alkoxy or a phenyl, or a fused polycyclic hydrocarbon group), which is well absorbed orally, exhibits durability of good blood level and has potent calpain inhibitory activity.