Organocatalytic Application of Ionic Liquids: [bmim][MeSO4] as a Recyclable Organocatalyst in the Multicomponent Reaction for the Preparation of Dihydropyrimidinones and -thiones
substitution in the latter. The ionic liquid can be recovered and reused for five consecutive reactions without significant loss of catalytic efficiency. The applicability of the methodology for large-scale reaction highlights its potential for bulk synthesis. ionic liquid - organocatalyst - multicomponent reaction - dihydropyrimidinone - dihydropyrimidinethione
The present invention provides compounds having formula (I): (I) and pharmaceutically acceptable derivatives thereof; as described generally and in subclasses herein, which compounds are useful as kinesin inhibitors (e.g., Eg5 inhibitors), and thus are useful, for example, for the treatment of proliferative disorders e.g., cancer. The invention additionally provides methods for preparing compounds of the invention, compositions comprising them, and methods for the use thereof in the treatment of various disorders where Eg5 is involved. In certain embodiments, the present invention provides for compounds, compositions, methods and systems for inhibiting cell growth. More specifically, the present invention provides for methods, compounds and compositions which are capable of inhibiting mitosis in metabolically active cells. Compounds, compositions and methods of the present invention inhibit the activity of a protein involved in the assembly and maintenance of the mitotic spindle. One class of proteins which acts on the mitotic spindle is the family of mitotic kinesins, a subset of the kinesin superfamily.
The Biginelli Reaction with an Imidazolium-Tagged Recyclable Iron Catalyst: Kinetics, Mechanism, and Antitumoral Activity
作者:Luciana M. Ramos、Bruna C. Guido、Catharine C. Nobrega、José R. Corrêa、Rafael G. Silva、Heibbe C. B. de Oliveira、Alexandre F. Gomes、Fábio C. Gozzo、Brenno A. D. Neto
DOI:10.1002/chem.201204314
日期:2013.3.25
The present work describes the synthesis, characterization, and application of a new ion‐tagged iron catalyst. The catalyst was employed in the Biginelli reaction with impressive performance. High yields have been achieved when the reaction was carried out in imidazolium‐based ionicliquids (BMI⋅PF6, BMI⋅NTf2, and BMI⋅BF4), thus showing that the ionic‐liquid effects play a role in the reaction. Moreover
Ionic Liquid Effect over the Biginelli Reaction under Homogeneous and Heterogeneous Catalysis
作者:Haline G. O. Alvim、Tatiani B. de Lima、Heibbe C. B. de Oliveira、Fabio C. Gozzo、Julio L. de Macedo、Patricia V. Abdelnur、Wender A. Silva、Brenno A. D. Neto
DOI:10.1021/cs400291t
日期:2013.7.5
Bronsted and Lewis acid catalysts with ionic tags under homogeneous and heterogeneous conditions have been tested to perform the Biginelli synthesis of 3,4-dihydropyrimidin-2(1H)-one (DHPMs). Metal-containing ionic liquids were evaluated as the catalysts with reasonable results (homogeneous systems). Heterogeneous catalysts (zeolite β and H3PW12O40 supported on zeolite β) have been tested, as well
已经测试了具有离子标签的布朗斯台德和路易斯酸催化剂在均相和非均相条件下进行Biginelli合成3,4-二氢嘧啶-2(1 H)-one(DHPMs)的过程。评估含金属的离子液体作为催化剂的结果合理(均相系统)。非均相催化剂(β和H 3 PW 12 O 40沸石还测试了负载在沸石β)上的沸石,效果良好至极好。在不使用三种试剂的情况下,在阴离子部分(均相系统)中使用带有杂多酸的功能化酸性离子液体可获得最佳结果。通过电喷雾电离(串联)质谱法在正离子和负离子两种模式下研究了优选的机理途径,具有非常明确的结果。还使用质谱和DFT计算研究了离子液体效应及其起源。
The Biginelli reaction under batch and continuous flow conditions: catalysis, mechanism and antitumoral activity
作者:Gabriel C. O. Silva、Jose R. Correa、Marcelo O. Rodrigues、Haline G. O. Alvim、Bruna C. Guido、Claudia C. Gatto、Kaline A. Wanderley、Mariana Fioramonte、Fabio C. Gozzo、Rodrigo O. M. A. de Souza、Brenno A. D. Neto
DOI:10.1039/c5ra07677c
日期:——
Biginelli scaffolds have been synthesized using two new coordination polymer as catalysts under batch or continuous flow conditions. The mechanism of the reaction and the antitumoral activity of the obtained DHPMs were also evaluated.