Human Neutrophil Elastase Phosphonic Inhibitors with Improved Potency of Action
摘要:
Herein, we present the synthesis and the measurement of the inhibitory activity of novel peptidyl derivatives of alpha-aminoalkylphosphonate diaryl esters as human neutrophil elastase inhibitors. Their selectivity against other serine proteases, including porcine pancreatic elastase, chymotrypsin, and trypsin, was also demonstrated. We also describe the preparation of single peptide diastereomers. The most active and selective compound developed possessed a k(inact)/K-1 of 2353000 M-1 s(-1), which is the most potent irreversible peptidyl inhibitor of human neutrophil elastase reported to date. The peptidyl inhibitors were demonstrated to be stable in PBS buffer and human plasma, as were their complexes with HNE.
Human Neutrophil Elastase Phosphonic Inhibitors with Improved Potency of Action
摘要:
Herein, we present the synthesis and the measurement of the inhibitory activity of novel peptidyl derivatives of alpha-aminoalkylphosphonate diaryl esters as human neutrophil elastase inhibitors. Their selectivity against other serine proteases, including porcine pancreatic elastase, chymotrypsin, and trypsin, was also demonstrated. We also describe the preparation of single peptide diastereomers. The most active and selective compound developed possessed a k(inact)/K-1 of 2353000 M-1 s(-1), which is the most potent irreversible peptidyl inhibitor of human neutrophil elastase reported to date. The peptidyl inhibitors were demonstrated to be stable in PBS buffer and human plasma, as were their complexes with HNE.
Design, Synthesis, and Evaluation of a Biomimetic Artificial Photolyase Model
作者:Olaf Wiest、Christopher B. Harrison、Nicolas J. Saettel、Radek Cibulka、Mirjam Sax、Burkhard König
DOI:10.1021/jo0494329
日期:2004.11.1
photolyase models that recognize pyrimidine dimers in protic and aprotic organicsolvents as well as in water through a combination of charge and hydrogen-bonding interactions and use a mimic of the flavine to achieve repair through reductive photoinduced electron transfer are presented. Fluorescence and NMR titration studies show that it forms a 1:1 complex with pyrimidine dimers with binding constants
提出了两种新的人工光解酶模型,它们通过结合电荷和氢键相互作用识别质子和非质子有机溶剂以及水中的嘧啶二聚体,并利用黄酮的模拟物通过还原性光诱导的电子转移实现修复。荧光和NMR滴定研究表明,它与嘧啶二聚体形成1:1的络合物,结合常数约为10 3 M - 1在乙腈或甲醇中时,在pH 7.2的水中的结合常数略低。用可见光激发该络合物通过光诱导的电子转移催化导致嘧啶二聚体的清洁和快速环还原。在水中的反应明显快于在有机溶剂中的反应。由于产物抑制,反应在较高转化率下减慢。
Pyrrolidine derivatives and their use as chymase inhibitor
申请人:——
公开号:US20040102384A1
公开(公告)日:2004-05-27
Novel pyrrolidine derivatives, being useful as chymase inhibitor or intermediate for synthesis of the active compounds, which has the formula (I): wherein R
1
is cycloalkyl, substituted or unsubstituted phenyl or naphthyl, indanyl, thienyl, furyl, substituted or unsubstituted indolyl, benzofuryl, substituted or unsubstituted benzothienyl, etc.; R
2
is H, alkyl, phenyl-lower alkyl, cycloalkyl or cycloalkyl-lower alkyl; R
3
is (i) substituted or unsubstituted monocyclic heterocyclic group, (ii) substituted or unsubstituted, benzene- or pyridine-fused heterocyclic group, or (iii) a group (a): R
4
and R
5
are independently H or OH, but R
4
and R
5
are not simultaneously H, or both form oxo; n is 0, 1, 2 or 3; or a salt thereof.
1
Heterocyclic compounds, intermediates thereof and elastase inhibitors
申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:US06835714B1
公开(公告)日:2004-12-28
The present invention relates to a heterocyclic compound of the following formula (I-a), its ester, or a salt thereof, and a human neutrophilic elastase inhibitor containing the same as the active ingredient, etc.
wherein A and B are the same or different and each is a lower alkylene group being optionally substituted by an oxo group, D is a heteromonocyclic or heterobicyclic group being optionally substituted by an oxo group, R1 and R2 are the same or different and each is a lower alkyl group, R3 and R4 are different from each other, and each is a hydrogen atom or a hydroxy group, or both combine together to form an oxo group, and R5 is 2-benzoxazolyl, trifluoromethyl, benzylamino-carbonyl, etc.
Synthesis and structure of (carboxymethyl)-functionalized cyclobuta-fused uracil dimers
作者:Thomas Carell、Robert Epple、Volker Gramlich
DOI:10.1002/hlca.19970800718
日期:1997.11.3
Herein, we report a convenient method for the preparation of four benzyl-ester-protected, (carboxymethyl)-functionalized cyclobuta-fused uracil dimers 1–4, including the desired cis-cisoid-cis,syn- configured isomer 1, a compound which is suitable for the preparation of catalytic antibodies, synthetic receptors, and model compounds, required for the investigation of the DNA-lesion, recognition step
Sodium-hydrogen exchanger (Na+/H+) type 1 (NHE-1) inhibitors have been shown to protect the heart during ischaemia and early reperfusion. As such, NHE-1 inhibitors are of special interest for clinical development for the attenuation of both acute and chronic post-myocardial infarction responses. New pyrimidine derivatives of N-acetylguanidine containing fragments of uracil, thymine, and their 3-benzyl derivatives were synthesised. These compounds showed in vitro inhibitory effects on NHE-1 that were significantly higher than those of zoniporide in platelet swelling assays.