Oxetanyl Peptides: Novel Peptidomimetic Modules for Medicinal Chemistry
摘要:
The synthesis of novel oxetanyl peptides, where the amide bond is replaced by a non-hydrolyzable oxetanylamine fragment, is reported. This new class of pseudo-dipeptides with the same H-bond donor/acceptor pattern found in proteins expands the repertoire of peptidomimetics.
<i>N</i>-[2,2-Dimethyl-3-(<i>N</i>-(4-cyanobenzoyl)amino)nonanoyl]-<scp>l</scp>-phenylalanine Ethyl Ester as a Stable Ester-Type Inhibitor of Chymotrypsin-like Serine Proteases: Structural Requirements for Potent Inhibition of <i>α</i>-Chymotrypsin
We introduce a new potent inhibitor, N-[2, 2-dimethyl-3-(N-(4-cyanobenzoyl)amino)nonanoyl]-L-phenylalanine ethylester (3), which preferentially inhibits serine proteases belonging to a chymotrypsin superfamily. This inhibitor, despite consisting of a stable ethylester structure, showed strong inhibitory activities toward bovine alpha-chymotrypsin, human cathepsin G, and porcine elastase by acting
Synthesis, micellisation and interaction of novel quaternary ammonium compounds derived from l-Phenylalanine with 1,2-dipalmitoyl-sn-glycero-3-phosphocholine as model membrane in relation to their antibacterial activity, and their selectivity over human red blood cells
l-Phenylalanine have been synthesized and their antibacterial efficiencies were determined against various strains of Gram-positive and Gram-negative bacteria. The antibacterialactivity increased with increasing chainlength, exhibiting a cut-off effect at C14 for Gram-positive and C12 for Gram-negative bacteria. The l-Phenylalanine QUATS displayed enhanced antibacterial properties with a higher cut-off point
[EN] NOVEL ANTIVIRAL COMPOUNDS, A PROCESS FOR THEIR PREPARATION, AND THEIR USE FOR TREATING VIRAL INFECTIONS<br/>[FR] NOUVEAUX COMPOSÉS ANTIVIRAUX, PROCÉDÉ POUR LEUR PRÉPARATION, ET LEUR UTILISATION POUR LE TRAITEMENT D'INFECTIONS VIRALES
申请人:UNIV LEUVEN KATH
公开号:WO2016174081A1
公开(公告)日:2016-11-03
The present invention relates to novel pro-drugs of L-2'-deoxythreose nucleoside phosphonates, such as phosphoramidate, phosphorodiamidate and phospho-diester prodrugs. The invention also relates to a process for preparing these novel prodrugs of nucleoside phosphonates. The invention also relates to the use of these novel phosphonatemodified nucleosides to treat or prevent viral infections and their use to manufacture a medicine to treat or prevent viral infections, particularly infections with viruses belonging to the HBV family.
Markedly Enhancing Enzymatic Enantioselectivity in Organic Solvents by Forming Substrate Salts
作者:Tao Ke、Alexander M. Klibanov
DOI:10.1021/ja984283v
日期:1999.4.1
A new approach is proposed to enhance enzymaticenantioselectivity in organic solvents. It is based on the presumption that the less reactive substrate enantiomer experiences greater steric hindran...
M-4 and iso M-4 derivatives, their preparation and compositions containing them
申请人:SANKYO COMPANY LIMITED
公开号:EP0065835A1
公开(公告)日:1982-12-01
Tetrahydro-M-4 and tetrahydro-IsoM-4 are new compounds which may be prepared by the catalytic hydrogenation of M-4 or IsoM-4 respectively. They, and their salts and esters (which may be prepared by conventional salification or esterification reactions with the parent tetrahydro-M-4 or tetrahydro-IsoM-4), are capable of inhibiting cholesterol biosynthesis in the liver and may be formulated, for therapeutic use, with conventional pharmaceutical carriers or diluents.