Second-Generation Peptidomimetic Inhibitors of Protein Farnesyltransferase Demonstrating Improved Cellular Potency and Significant in Vivo Efficacy
摘要:
The synthesis and evaluation of analogues of previously reported farnesyltransferase inhibitors, pyridyl benzyl ether 3 and pyridylbenzylamine 4, are described. Substitution of 3 at the 5-position of the core aryl ring resulted in inhibitors of equal or less potency against the enzyme and decreased efficacy in a cellular assay against Ras processing by the enzyme. Substitution of 4 at the benzyl nitrogen yielded 26, which showed improved efficacy and potency and yet presented a poor pharmacokinetic profile. Further modification afforded 30, which demonstrated a dramatically improved pharmacokinetic profile. Compounds 26 and 29 demonstrated significant in vivo efficacy in nude mice inoculated with MiaPaCa-2, a human pancreatic tumorderived cell line.
Ligand-Free Copper-Catalyzed Amination of Heteroaryl Halides with Alkyl- and Arylamines
作者:Zhen-Jiang Liu、Jean-Pierre Vors、Ernst R. F. Gesing、Carsten Bolm
DOI:10.1002/adsc.201000708
日期:2010.12.17
N-Heteroarylations of alkyl- and arylamines with various heteroarylhalides have been achieved by ligand-freecopper-catalyzed cross-couplings affording aminopyridines and aminopyrimidines in moderate to high yields (up to 99% yield).
Highly efficient and practical phosphoramidite–copper catalysts for amination of aryl iodides and heteroaryl bromides with alkylamines and N(H)-heterocycles
作者:Zhanjin Zhang、Jincheng Mao、Di Zhu、Fan Wu、Huilin Chen、Boshun Wan
DOI:10.1016/j.tet.2006.02.062
日期:2006.5
A highly efficient copper-catalyzed system using phosphoramidite as ligands was applied to N-arylation of alkylamines and N(H)-heterocycles with aryl iodides and heteroarylbromides. The reactions were carried out in relative mild conditions and good to excellent yields were obtained.
<scp>d</scp>-Glucose: An Efficient Reducing Agent for a Copper(II)-Mediated Arylation of Primary Amines in Water
作者:Maud Bollenbach、Patrick Wagner、Pedro G. V. Aquino、Jean-Jacques Bourguignon、Frédéric Bihel、Christophe Salomé、Martine Schmitt
DOI:10.1002/cssc.201600801
日期:2016.11.23
A copper‐catalyzed Ullmann‐type amination with primary amines in water with a combination of copper(II) triflate [Cu(OTf)2], dipivaloylmethane, and d‐glucose is reported. The mild conditions and the use of an inexpensive catalyst as well as a renewable feedstock (d‐glucose and the surfactant TPGS‐750‐M, which is derived from vitamin E) make this protocol a safe and convenient strategy for efficient
作者:Hang Luo、Guohua Wang、Yunhui Feng、Wanyao Zheng、Lingya Kong、Yunpeng Ma、Shigeki Matsunaga、Luqing Lin
DOI:10.1002/chem.202202385
日期:2023.1.2
Exogenous photocatalyst-free, single nickel-catalyzed carbon–heteroatomcoupling under visible-light irradiation is reported. Over 15 classes of nucleophile can efficiently couple with aryl/alkene halides to afford valuable heteroatomic arenes/alkenes. The unprecedentedly broad substrate scope and late-stage modification of valuable molecules fully demonstrate the benefits of the method.
Can Palladium Acetate Lose Its “Saltiness”? Catalytic Activities of the Impurities in Palladium Acetate
作者:William A. Carole、Jonathan Bradley、Misbah Sarwar、Thomas J. Colacot
DOI:10.1021/acs.orglett.5b02835
日期:2015.11.6
Commercially available palladium acetate often contains two major impurities, whose presence can impact the overall catalytic efficacy. This systematic study provides a comparison of the differences in catalytic activity of pure palladium acetate, Pd-3(OAc)(6), with the two impurities: Pd-3(OAc)(6)(NO2) and polymeric [Pd(OAc)(2)](n) in a variety of cross-coupling reactions. The solid state C-13 NMR spectra of all three compounds in conjunction with DFT calculations confirm their reported geometries.