“Fleximers”. Design and Synthesis of a New Class of Novel Shape-Modified Nucleosides<sup>1</sup>
作者:Katherine L. Seley、Liang Zhang、Asmerom Hagos、Stephen Quirk
DOI:10.1021/jo0255476
日期:2002.5.1
A new class of shape-modified nucleosides is introduced. These novel "fleximers" feature the purine ring systems of adenosine, inosine, and guanosine split into their individual imidazole and pyrimidine components (as in 1-3). This structural modification serves to introduce flexibility into the nucleoside while still retaining the elements essential for recognition. As a consequence, these novel fleximers
We have studied an ester prodrug of a carbapenem to develop a potent orally active β-lactam antibiotic. A variety of 1β-methylcarbapenem derivatives have been synthesized. We have found that some derivatives having an amide group in the C-2 side chain show potent and well balanced antibacterial activities as well as high stability against dehydropeptidase-I. Oral absorption of derivatives has been optimized by modifying the C-3 ester promoiety. Pivaloyloxymethyl (1R, 5S, 6S)-6-[(R)-1-hydroxyethyl]-1-methyl-2-[(R)-5-oxopyrrolidin-3-ylthio]-1-carbapen-2-em-3-carboxylate, CS-834, has been selected as the most promising compound for further evaluation.
Disclosed herein are cannabinoid receptor ligands of formula (I)
wherein A
1
, A
5
, R
x
, X
4
, and z are as defined in the specification. Compositions comprising such compounds, and methods for treating conditions and disorders using such compounds and compositions are also disclosed.
Discovery of Cyclic Boronic Acid QPX7728, an Ultrabroad-Spectrum Inhibitor of Serine and Metallo-β-lactamases
作者:Scott J. Hecker、K. Raja Reddy、Olga Lomovskaya、David C. Griffith、Debora Rubio-Aparicio、Kirk Nelson、Ruslan Tsivkovski、Dongxu Sun、Mojgan Sabet、Ziad Tarazi、Jonathan Parkinson、Maxim Totrov、Serge H. Boyer、Tomasz W. Glinka、Orville A. Pemberton、Yu Chen、Michael N. Dudley
DOI:10.1021/acs.jmedchem.9b01976
日期:2020.7.23
toward expanding the spectrum to allow treatment of a wider range of organisms. Through key structural modifications of a bicyclic lead, stepwise gains in spectrum of inhibition were achieved, ultimately resulting in QPX7728 (35). This compound displays a remarkably broadspectrum of inhibition, including class B and class D enzymes, and is little affected by porin modifications and efflux. Compound
[EN] NOVEL THIOPHENE AMIDINES, COMPOSITIONS THEREOF, AND METHODS OF TREATING COMPLEMENT-MEDIATED DISEASES AND CONDITIONS<br/>[FR] NOUVELLES AMIDINES DE THIOPHENE, COMPOSITIONS DE CES AMIDINES ET PROCEDE POUR TRAITER DES MALADIES ET DES ETATS MEDIES PAR LE COMPLEMENT
申请人:DIMENSIONAL PHARM INC
公开号:WO2003099805A1
公开(公告)日:2003-12-04
Disclosed is a method for treating the symptoms of an acute or chronic disorder mediated by the classical pathway of the complement cascade, comprising administering to a mammal in need of such treatment a therapeutically effective amount of a compound of Formula (I) or a solvate, hydrate or pharmaceutically acceptable salt thereof; wherein R1, R2, R3, R4 and R7 are defined in the specification, Z is SO or SO2, and Ar is an aromatic or heteroaromatic group as defined herein.