Synthesis and Structure−Activity Relationships of 2-Substituted <scp>d</scp>-Tryptophan-Containing Peptidic Endothelin Receptor Antagonists: Importance of the C-2 Substituent of the <scp>d</scp>-Tryptophan Residue for Endothelin A and B Receptor Subtype Selectivity
Continuing studies on modifications of potent cyclicpentapeptideendothelin (ET) receptor antagonists, represented by BQ-123, and potent linear tripeptide derivative ET receptor antagonists, represented by BQ-788, are described herein. The introduction of D-tryptophan analogues with C-2 substituents in these peptidic ET antagonists resulted in potent ET receptor antagonists with various ETA/ETB subtype selectivity
An efficient and facile, solvent-free peptide synthesis assisted by microwaveirradiation, using DIC/HONB as the coupling reagent combination is reported. Key features of this original protocol are solvent-freesynthesis, very short reaction time and scalability without affecting yield and purity. The versatility of the method was successfully demonstrated by synthesizing several biologically active
[EN] HEPATITIS C VIRUS INHIBITORS<br/>[FR] INHIBITEURS DU VIRUS DE L'HEPATITE C
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2003099274A1
公开(公告)日:2003-12-04
Hepatitis C virus inhibitors are disclosed having the general formula:(I) wherein R1, R2, R3, R', B, Y and X are described in the description. Compositions comprising the compounds and methods for using the compounds toinhibit HCV are also disclosed.
Amino acid derivatives having renin inhibiting activity
申请人:Hoffmann La Roche Inc.
公开号:US05688946A1
公开(公告)日:1997-11-18
The compounds of the formula ##STR1## in the form of optically pure diastereomers, mixtures of diastereomers, diastereomeric racemates or mixtures of diastereomeric racemates as well as pharmaceutically usable salts thereof inhibit the activity of the natural enzyme renin and can accordingly be used in the form of pharmaceutical preparations in the control or prevention of high blood pressure and cardiac insufficiency.