New broad-spectrum parenteral cephalosporins exhibiting potent activity against both methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa. Part 3: 7β-[2-(5-Amino-1,2,4-thiadiazol-3-yl)-2-ethoxyiminoacetamido] cephalosporins bearing 4-[3-(aminoalkyl)-ureido]-1-pyridinium at C-3′
摘要:
Among the prepared C-3' substituted-pyridinium cephalosporins, a series of 7beta-[2-(5-amino-1,2,4-thiadiazol-3-yl)-2-ethoxyiminoacetamido] cephalosporins bearing 4-[3-(aminoalkyl)-ureido]-1-pyridinium at C-3' showed highly potent antibacterial activity against MRSA and Pseudomonas aeruginosa. (C) 2004 Elsevier Ltd. All rights reserved.
Regioselective Preparation of Pyridin-2-yl Ureas from 2-Chloropyridines Catalyzed by Pd(0)
作者:Antonio Abad、Consuelo Agulló、Ana Carmen Cuñat、Cristina Vilanova
DOI:10.1055/s-2005-861844
日期:——
The palladium-catalyzed ureidation reaction of 2-chloropyridines can be regioselectively performed in good yield, with both aryl and aliphatic ureas, using xantphos as the ligand, Pd(OAc)2 as the source of palladium, NaOt-Bu/H2O or NaOH/H2O as the base, and dioxane as the solvent
A General Method for the Synthesis of Unsymmetrically Substituted Ureas via Palladium-Catalyzed Amidation
作者:Brian J. Kotecki、Dilinie P. Fernando、Anthony R. Haight、Kirill A. Lukin
DOI:10.1021/ol802931m
日期:2009.2.19
A general and practical method for the preparation of unsymmetrically substituted ureas has been developed utilizing palladium-catalyzed amidation. Both aryl bromides and chlorides, as well as heteroaryl chlorides, have been coupled to aryl, benzyl, and aliphatic ureas by using a novel nonproprietary bipyrazole ligand (bippyphos).
Substituent effect of <i>N</i>
-aryl-<i>N</i>
′-pyridyl ureas as thermal latent initiators on ring-opening polymerization of epoxide
作者:Naoyuki Makiuchi、Atsushi Sudo、Takeshi Endo
DOI:10.1002/pola.27726
日期:2015.11.15
series of N‐aryl‐N′‐pyridyl ureas were synthesized by the reactions of 4‐aminopyridine (4AP) with the corresponding isocyanates such as phenyl isocyanate, 4‐methylphenyl isocyanate, 4‐methoxyphenyl isocyanate, 4‐chlorophenyl isocyanate, 4‐(trifluoromethyl)phenyl isocyanate, and 4‐nitrophenyl isocyanate. Bulk polymerization of diglycidyl ether of bisphenol A (DGEBA) in the presence of the ureas as initiators
[EN] HETEROARYL COMPOUNDS AS PIKK INHIBITORS<br/>[FR] COMPOSÉS HÉTÉROARYLE EN TANT QU'INHIBITEURS DES PIKK
申请人:AMGEN INC
公开号:WO2010132598A1
公开(公告)日:2010-11-18
The present invention provides compounds that are PIKK inhibitors, more specifically, mTOR and/or PI3Kα kinase inhibitors and are therefore useful for the treatment of diseases treatable by inhibition of kinases, specifically PI3 kinases, more specifically, mTOR and/or PI3Kα, such as cancer. Also provided are pharmaceutical compositions containing such compounds and processes for preparing such compounds.
Ring opening polymerization of epoxides with urea-derivatives of 4-aminopyridine as thermally latent anionic initiator
作者:Naoyuki Makiuchi、Atsushi Sudo、Takeshi Endo
DOI:10.1002/pola.27265
日期:2014.9.1
evaluated as thermallylatentinitiators for the anionic ring‐opening polymerization of diglycidyl ether of bisphenol A (DGEBA). The urea‐derivatives were synthesized by the reactions of 4AP with the corresponding iso(thio)cyanates (phenyl isocyanate, tert‐butyl isocyanate, methylene diphenyl diisocyanate, and phenyl isothiocyanate). The ability of the urea‐derivatives as latentinitiators was investigated