Heterocycles as masked diamide/dipeptide equivalents. Formation and reactions of substituted 5-(acylamino)oxazoles as intermediates en route to the cyclopeptide alkaloids
作者:Bruce H. Lipshutz、Randall W. Hungate、Keith E. McCarthy
DOI:10.1021/ja00364a041
日期:1983.12
Etude de la synthese de dialkyl-2,4 acylamino-5 oxazoles par cyclisation a partir d'α-cyanoalkylamides d'acides, de N-acetyl α-aminoamides ou de dipeptides. Fonctionnalisation des oxazoles obtenus
triethyl diazophosphonoacetate catalysed by rhodium(II) acetate in the presence of N-protected amino acid amides 8 gives the phosphonates 9. Subsequent Wadsworth-Emmons reaction of 9 with aldehydes in the presence of DBU gives dehydro dipeptides 10. The reaction has been extended to a simple two-step procedure, without the isolation of the intermediate phosphonate, for conversion of a range of amino acid
Compounds & Methods for the Enhanced Degradation of Targeted Proteins & Other Polypeptides by an E3 Ubiquitin Ligase
申请人:YALE UNIVERSITY
公开号:US20140356322A1
公开(公告)日:2014-12-04
The present invention relates to bifunctional compounds, which find utility as modulators of targeted ubiquitination, especially inhibitors of a variety of polypeptides and other proteins that are degraded and/or otherwise inhibited by bifunctional compounds of the present invention. In particular, the present invention is directed to compounds, which contain on one end a VHL ligand that binds to the ubiquitin ligase and on the other end a moiety that binds a target protein, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of that protein. The present invention exhibits a broad range of pharmacological activities associated with compounds of the present invention, consistent with the degradation/inhibition of targeted polypeptides.
[EN] PYRIDONEMORPHINAN ANALOGS AND BIOLOGICAL ACTIVITY ON OPIOID RECEPTORS<br/>[FR] ANALOGUES DE PYRIDONEMORPHINANE ET ACTIVITÉ BIOLOGIQUE SUR DES RÉCEPTEURS DES OPIOÏDES
申请人:PURDUE PHARMA LP
公开号:WO2014091295A1
公开(公告)日:2014-06-19
The application is directed to compounds of Formula (I-A) and pharmaceutically acceptable salts and solvates thereof, wherein Formula (II), R1a, R2a, R3a, R4 and Za are defined as set forth in the specification. The invention is also directed to use of compounds of Formula I-A to treat disorders responsive to the modulation of one or more opioid receptors, or as synthetic intermediates. Certain compounds of the present invention are especially useful for treating pain.
Interactions between terminally substituted amino acids in an aqueous and a non-aqueous environment. Enthalpic interaction coefficients in water and in N,N-dimethylformamide at 25�C
作者:Hilary E. Kent、Terence H. Lilley、Peter J. Milburn、Michael Bloemendal、Gus Somsen
DOI:10.1007/bf00648899
日期:1985.2
L-leucine, and L-phenylalanine, dissolved in N,N-dimethylformamide (DMF) as a solvent have been measured at 25°C. The results obtained have been analyzed to give the enthalpicinteraction (or virial) coefficients of the solutes and these are compared with information previously obtained in aqueous systems. There are marked differences in the interaction properties in the two solvents and, while the