New Prolyl Oligopeptidase Inhibitors Developed from Dicarboxylic Acid Bis(l-prolyl-pyrrolidine) Amides
摘要:
Isophthalic acid bis(L-prolyl-pyrrolidine) amide is a very potent prolyl oligopeptidase inhibitor, but it has a log P value of -0.2, which is very low for a compound targeted to the brain. Therefore, these types of compounds were further modified to improve the structure-activity relationships, with the focus on increasing the log P value. The inhibitory activity against prolyl oligopeptidase from pig brain was tested in vitro. The most promising compounds resulted from replacing the pyrrolidinyl. group at the P5 site by cycloalkyl groups, such as cyclopentyl and cyclohexyl groups, and by a phenyl group. These compounds are slightly more potent, and they have a significantly higher log P value. The potency of these compounds was further increased by replacing the pyrrolidinyl group at the P1 site by 2(S)-cyanopyrrolidinyl and 2(S)(hydroxyacetyl)pyrrolidinyl groups.
New Prolyl Oligopeptidase Inhibitors Developed from Dicarboxylic Acid Bis(l-prolyl-pyrrolidine) Amides
摘要:
Isophthalic acid bis(L-prolyl-pyrrolidine) amide is a very potent prolyl oligopeptidase inhibitor, but it has a log P value of -0.2, which is very low for a compound targeted to the brain. Therefore, these types of compounds were further modified to improve the structure-activity relationships, with the focus on increasing the log P value. The inhibitory activity against prolyl oligopeptidase from pig brain was tested in vitro. The most promising compounds resulted from replacing the pyrrolidinyl. group at the P5 site by cycloalkyl groups, such as cyclopentyl and cyclohexyl groups, and by a phenyl group. These compounds are slightly more potent, and they have a significantly higher log P value. The potency of these compounds was further increased by replacing the pyrrolidinyl group at the P1 site by 2(S)-cyanopyrrolidinyl and 2(S)(hydroxyacetyl)pyrrolidinyl groups.
racemic N-acylated α,α-disubstituted amino acids were resolved by coupling to chiral amines 15-18 derived from (S)-phenylalanine to form diastereoisomers 19/20 or 21/22 that could be separated by crystallization and/or flash chromatography on silica gel (Scheme 3). Selective cleavage via the 1,3-oxazol-5(4H)-ones 10a-p gave the corresponding optically pure α,α-disubstituted amino-acid derivatives 11 or
[EN] DIPEPTIDYL PEPTIDASE INHIBITORS<br/>[FR] INHIBITEURS DE DIPEPTIDYLE PEPTIDASE
申请人:AIC
公开号:WO2004076433A1
公开(公告)日:2004-09-10
The present invention relates to novel inhibitors of serine type peptidases in general and of serine type dipeptidyl peptidases in particular. The present invention further relates to the use of the dipeptidyl peptidase inhibitors for selective inhibition of dipeptidyl peptidases. The present invention also relates to pharmaceutical compositions comprising these novel dipeptidyl peptidase inhibitors. The present invention further relates to the use of the novel inhibitors in therapy, diagnosis and research.
[EN] COMPOUNDS HAVING PROLYL OLIGOPEPTIDASE INHIBITORY ACTIVITY, METHODS FOR THEIR PREPARATION AND THEIR USE<br/>[FR] COMPOSES INHIBITEURS DE LA PROLYL OLIGOPEPTIDASE, PROCEDES DE PREPARATION ET UTILISATION
申请人:ORION CORP
公开号:WO2003004468A1
公开(公告)日:2003-01-16
Compounds of the formula (I), wherein the symbol aa means a residue of an α-amino acid. The invention is also directed to a method for the preparation of the compounds of formula (I), as well as their use as prolyl oligopeptide inhibitors, for example for the treatment of Alzheimer's disease.
Compounds having prolyl oligopeptidase inhibitory activity, methods for their preparation and their use
申请人:Gynther Jukka
公开号:US20050020677A1
公开(公告)日:2005-01-27
Compounds of the formula (I),
wherein the symbol aa means a residue of an α-amino acid. The invention is also directed to a method for the preparation of the compounds of formula (I), as well as their use as prolyl oligopeptide inhibitors, for example for the treatment of Alzheimer's disease.
Design, Synthesis, and SAR of Potent and Selective Dipeptide-Derived Inhibitors for Dipeptidyl Peptidases
作者:Kristel Senten、Pieter Van der Veken、Ingrid De Meester、Anne-Marie Lambeir、Simon Scharpé、Achiel Haemers、Koen Augustyns
DOI:10.1021/jm0308803
日期:2003.11.1
In this paper we report the systematic search for new, potent, and selective DPP II inhibitors. A study of the structure-activity relationship was conducted starting from aminoacyl pyrrolidides as lead compounds. Rational exploration of the P-1 and P-2 building blocks led to the discovery of some very potent DPP II inhibitors which can be characterized by their high selectivity for DPP II with regard to DPP IV. Dab-Pip and Dab-Pip-2-CN were selected as the most promising inhibitors (IC50 nM range) and will enable us to study the physiological role of DPP II and to differentiate between DPP 11 and DPP IV in biological systems.