Palladium-Catalyzed Monoselective Halogenation of CH Bonds: Efficient Access to Halogenated Arylpyrimidines using Calcium Halides
作者:Bingrui Song、Xiaojian Zheng、Jun Mo、Bin Xu
DOI:10.1002/adsc.200900778
日期:2010.2.15
A wide variety of ortho-halogenated arylpyrimidines were prepared with high monoselectivity and functional-group tolerance by usingcalciumhalides as crucial halogenating agents and cupric trifluoroacetate as oxidant in the presence of air.
Construction of Pyrrolo[1,2-<i>a</i>]indoles via Cobalt(III)-Catalyzed Enaminylation of 1-(Pyrimidin-2-yl)-1<i>H</i>-indoles with Ketenimines and Subsequent Base-Promoted Cyclization
作者:Xiaorong Zhou、Zili Fan、Zhiyin Zhang、Ping Lu、Yanguang Wang
DOI:10.1021/acs.orglett.6b02353
日期:2016.9.16
A cobalt(III)-catalyzed cross-coupling reaction of 1-(pyrimidin-2-yl)-1H-indoles with ketenimines is reported. The reaction provided 2-enaminylated indolederivatives in moderate to excellent yields with a broad substrate scope. The prepared 2-enaminylated indoles could be conveniently converted into pyrrolo[1,2-a]indoles, which are an important class of compounds in medicinal chemistry.
报道了1-(嘧啶-2-基)-1 H-吲哚与酮亚胺的钴(III)催化的交叉偶联反应。该反应以中等至优异的产率提供了2-烯丙基化的吲哚衍生物,具有广泛的底物范围。制备的2-烯丙基化吲哚可方便地转化为吡咯并[1,2- a ]吲哚,吡咯并[1,2- a ]吲哚是药物化学中重要的一类化合物。
Design, Synthesis, and Biological Evaluation of 4-Quinoline Carboxylic Acids as Inhibitors of Dihydroorotate Dehydrogenase
作者:Joseph T. Madak、Christine R. Cuthbertson、Yoshinari Miyata、Shuzo Tamura、Elyse M. Petrunak、Jeanne A. Stuckey、Yanyan Han、Miao He、Duxin Sun、Hollis D. Showalter、Nouri Neamati
DOI:10.1021/acs.jmedchem.7b01862
日期:2018.6.28
We pursued a structure-guided approach toward the development of improved dihydroorotate dehydrogenase (DHODH) inhibitors with the goal of forming new interactions between DHODH and the brequinar class of inhibitors. Two potential residues, T63 and Y356, suitable for novel H-bonding interactions, were identified in the brequinar-binding pocket. Analogues were designed to maintain the essential pharmacophore
Exploiting Coordination Effects for the Regioselective Zincation of Diazines Using TMPZnX⋅LiX (X=Cl, Br)
作者:Alexander Kremsmair、Alisa S. Sunagatullina、Leonie J. Bole、Pasquale Mastropierro、Simon Graßl、Henrik R. Wilke、Edouard Godineau、Eva Hevia、Paul Knochel
DOI:10.1002/anie.202210491
日期:2022.10.4
N-heterocycles such as pyrimidines were regioselectively zincated using bimetallic bases of type TMPZnX⋅LiX (TMP=2,2,6,6-tetramethylpiperidyl; X=Cl, Br) and subsequently quenched with electrophiles. Trapping of key organometallic intermediates has shed light on their complex solution constitution and helped to explain the high regioselectivity observed as well as the stoichiometry of the base used.