Synthesis and biological activity of pseudopeptides inhibitors of Ras farnesyl transferase containing unconventional amino acids
摘要:
A study was performed on the structure-activity relationships of a series of phenol derivatives, CVFM analogs, derived from the two most active compounds of a first series (1(A) and 1(B)) of inhibitors of Ras farnesyl transferase (FTase) that we have recently described. We report the synthesis and the activity of a second series of compounds in which the phenylalanine residue was replaced by unconventional aromatic and non-aromatic amino acids, with varying electronic, lipophilic, steric and conformational properties. The compounds showed to be significantly less active than reference compounds against FT, with the only exception of derivative 3(A) (IC50 = 3 mu M), which is slightly more active than 1(A) but not 1(B). Subsequently we tested the effects of compounds 1(A), 1(B) and 3(A), 3(B) on the anchorage-dependent growth of two epithelial cell lines of rats, FRTL-5 and the same line v-aa-ras transformed. Compound 3, derived from lead compound 1(A), showed an appreciable selectivity against transformed cells. In contrast, compounds derived from derivative 1(B) had only a modest cellular activity. (C) 1999 Elsevier Science S.A. All rights reserved.
Selective Substrates and Activity-Based Probes for Imaging of the Human Constitutive 20S Proteasome in Cells and Blood Samples
作者:Wioletta Rut、Marcin Poręba、Paulina Kasperkiewicz、Scott J. Snipas、Marcin Drąg
DOI:10.1021/acs.jmedchem.8b00026
日期:2018.6.28
the HyCoSuL approach, we designed and synthesized novel and selective fluorogenic substrates for each of these three constitutive 20S proteasome activities and applied them to assess inhibition of proteasome subunits by MG-132 and a clinically used inhibitor bortezomib. Our results confirm the utility of designed substrates in biochemical assays. Furthermore, selective peptide sequences obtained in this
Reloaded matrix: Facile optical encoding of polyethylene glycol (PEG) based resins provides a direct identification of compounds in combinatorial libraries, and the structures may be correlated with bioactivity. The new technique, microparticlematrix (MPM) encoding (see picture), circumvents some problems often encountered in solid‐phase combinatorial chemistry and is extremely simple to implement
Exploring hydrophobicity limits of polyproline helix with oligomeric octahydroindole-2-carboxylic acid
作者:Vladimir Kubyshkin、Nediljko Budisa
DOI:10.1002/psc.3076
日期:2018.4
The polyproline‐IIhelix is the most extended naturally occurring helical structure and is widely present in polar, exposed stretches and “unstructured” denatured regions of polypeptides. Can it be hydrophobic? In this study, we address this question using oligomeric peptides formed by a hydrophobic proline analogue, (2S,3aS,7aS)‐octahydroindole‐2‐carboxylic acid (Oic). Previously, we found the molecular
Fifteen analogues of the C-terminal CA1A2X motif were synthesized and evaluated for their inhibition potency against farnesyltransferase (FTase). Replacement of the A2 residue by phenylalanine or tyrosine-derived analogues, in which a different number of methyl groups were introduced on the aromatic ring, resulted in compounds less active than the reference compound CVFM against FTase except for compounds
[EN] MASP INHIBITORY COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS INHIBITEURS DE MASP ET LEURS UTILISATIONS
申请人:BAYER AG
公开号:WO2020225095A1
公开(公告)日:2020-11-12
The present invention relates to novel Mannose-binding lectin (MBL)-associated serine protease (MASP) inhibitory compounds, as well as analogues and derivatives thereof, to processes for the preparation thereof, to the use thereof alone or in combinations for treatment and/or prevention of diseases and to the use thereof for production of medicaments for treatment and/or prevention of diseases, especially for treatment and/or prevention of renal and cardiovascular disorders and of ischemia reperfusion injuries.