[EN] PYRIMIDOPYRIMIDOINDAZOLE DERIVATIVE<br/>[FR] DÉRIVÉ DE PYRIMIDO-PYRIMIDO-INDAZOLE
申请人:BANYU PHARMA CO LTD
公开号:WO2010098367A1
公开(公告)日:2010-09-02
The invention is to provide a novel anticancer agent or sensitizer for cancer chemotherapy or radiotherapy. A compound of a general formula (I): wherein A means an aryl group or a heteroaryl group, or a group of a formula (a):; R1 means a -(C=O)aOb(C1-C6)alkyl group, a -(C=O)aOb(C2-C6)alkenyl group, a -(C=O)aOb(C3-C6)cycloalkyl group, an aryl group or a heteroaryl group; R2 and R3 each mean a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a -(C=O)aOb(C1-C6)alkyl group or a group of -(C=O)aN(R1e)R2e; R4 means a hydrogen atom or a (C1-C6)alkyl group, and the like have an excellent Wee1-kinase-inhibitory effect, and are therefore useful in the field of medicine, especially in the field of various cancer treatments.
The present invention relates to a compound of formula (I), to the process for preparing such compounds and to their use in the treatment of a pathological condition or disease susceptible to amelioration by inhibition of Syk kinase.
Aerobic α,β-C(sp<sup>3</sup>)–H Bond Difunctionalization and C–N Bond Cleavage of Triethylamine: Difunctional Ammonium Iodide Enabling the Regioselective Synthesis of 4-Arylpyrimido[1,2-<i>b</i>]indazoles
作者:Qinghe Gao、Xinya Han、Peiyuan Tong、Zhiang Zhang、Haotian Shen、Yanrong Guo、Suping Bai
DOI:10.1021/acs.orglett.9b02218
日期:2019.8.2
A novel method for the regioselective synthesis of 4-arylpyrimido[1,2-b]indazoles has been developed via the dual C(sp3)–H bond functionalization and C–N bond cleavage of triethylamine. The elusive acyclic enamine intermediates are effectively in situ generated and captured by aromatic aldehydes to form a wide array of tricyclic products from 3-aminoindazoles under the NH4I-mediated aerobic oxidative
通过三乙胺的双C(sp 3)-H键官能化和C-N键裂解,开发了一种新的区域选择性合成4-芳基嘧啶[1,2- b ]吲唑的新方法。难以捉摸的无环烯胺中间体可在NH 4 I介导的需氧氧化条件下有效地原位生成并被芳族醛捕获,从而形成多种由3-氨基吲唑形成的三环产物。该反应具有容易获得的原料,绿色和经济条件以及有价值的产品的特点。
Controllable Site-Selective Construction of 2- and 4-Substituted Pyrimido[1,2-<i>b</i>]indazole from 3-Aminoindazoles and Ynals
作者:Xiang Liu、Jinlei Zhou、Jiatong Lin、Zemin Zhang、Suying Wu、Qiuxing He、Hua Cao
DOI:10.1021/acs.joc.1c01094
日期:2021.7.2
straightforward and novel controllable site-selective construction of 2- and 4-substituted pyrimido[1,2-b]indazole from 3-aminoindazoles and ynals has been developed. The high regioselectivity of this reaction could be easily switched by converting different catalytic systems. In this way, a series of 2- and 4-substituted pyrimido[1,2-b]indazole derivatives were obtained in moderate to good yields. In addition, the
已经开发出一种由 3-氨基吲唑和 ynals 直接且新颖的可控位点选择性构建 2-和 4-取代的嘧啶并[1,2 -b ]吲唑的方法。该反应的高区域选择性可以通过转换不同的催化体系轻松切换。通过这种方式,以中等至良好的收率获得了一系列2-和4-取代的嘧啶并[1,2- b ]吲唑衍生物。此外,还讨论了本方法制备的化合物3a的光物理性质。