Optimization of Novel 1-Methyl-1H-Pyrazole-5-carboxamides Leads to High Potency Larval Development Inhibitors of the Barber’s Pole Worm
摘要:
A phenotypic screen of a diverse library of small molecules for inhibition of the development of larvae of the parasitic nematode Haemonchus contortus led to the identification of a 1-methyl-1H-pyrazole-5-carboxamide derivative with an IC50 of 0.29 mu M. Medicinal chemistry optimization targeted modifications on the left-hand side (LHS), middle section, and right-hand side (RHS) of the scaffold in order to elucidate the structure-activity relationship (SAR). Strong SAR allowed for the iterative and directed assembly of a focus set of 64 analogues, from which compound 60 was identified as the most potent compound, inhibiting the development of the fourth larval (L4) stage with an IC50 of 0.01 mu M. In contrast, only 18% inhibition of the mammary epithelial cell line MCF10A viability was observed, even at concentrations as high as 50 mu M.
Transition metal-free catalytic reduction of primary amides using an abnormal NHC based potassium complex: integrating nucleophilicity with Lewis acidic activation
作者:Mrinal Bhunia、Sumeet Ranjan Sahoo、Arpan Das、Jasimuddin Ahmed、Sreejyothi P.、Swadhin K. Mandal
DOI:10.1039/c9sc05953a
日期:——
potassium complex was used as a transitionmetal-free catalyst for reduction of primary amides to corresponding primary amines under ambient conditions. Only 2 mol% loading of the catalyst exhibits a broad substrate scope including aromatic, aliphatic and heterocyclic primary amides with excellent functional group tolerance. This method was applicable for reduction of chiral amides and utilized for the synthesis
Primary amides to amines or nitriles: a dual role by a single catalyst
作者:Hari S. Das、Shyamal Das、Kartick Dey、Bhagat Singh、Rahul K. Haridasan、Arpan Das、Jasimuddin Ahmed、Swadhin K. Mandal
DOI:10.1039/c9cc05856g
日期:——
of various primary amides to amines (25 examples). On simple modification of the reaction conditions such as in the presence of a catalytic amount of secondary amide, the same catalyst can transform the primary amides into intermediate nitrile compounds (16 examples) in excellent yields. This is the first example where such a controlled catalytic transformation of primary amides to amines or nitriles
[EN] SUBSTITUTED 2, 4-DIAMINO-QUINOLINE DERIVATIVES FOR USE IN THE TREATMENT OF PROLIFERATIVE DISEASES<br/>[FR] DÉRIVÉS SUBSTITUÉS DE 2, 4-DIAMINO-QUINOLÉINE POUR LEUR UTILISATION DANS LE TRAITEMENT DE MALADIES PROLIFÉRATIVES
申请人:GENOSCIENCE PHARMA
公开号:WO2017191599A1
公开(公告)日:2017-11-09
This application discloses compounds according to generic Formula (I): wherein all variables are defined as described herein which exhibit strong inhibition effects on various cancer cell lines. The compounds disclosed herein are useful for the treatment of proliferative diseases, including neoplastic diseases such as cancer and non- neoplastic disorders such as rheumatoid arthritis. Also disclosed are pharmaceutical compositions containing compounds of Formula (I) and at least one carrier, diluent or excipient and optionally one or more additional therapeutically active agents, including anticancer agents. This application also discloses methods for treating a proliferative disease, including neoplastic diseases such as cancer and non- neoplastic disorders such as rheumatoid arthritis.
The present invention relates to novel thrombin inhibitors that are useful as anticoagulants. More particularly, the present invention is directed to peptide derivatives having high antithrombotic activity and high oral bioavailability.
Ligand–metal cooperativity in quinonoid based nickel(<scp>ii</scp>) and cobalt(<scp>ii</scp>) complexes for catalytic hydrosilylative reduction of nitriles to amines: electron transfer and mechanistic insight
realistically designed two complexes based on nickel(II) and cobalt(II) with a redox-active imino-o-benzoquinonato ligand. The compounds were characterized by a suite of spectroscopic methods, cyclic voltammetry and single-crystal X-ray diffraction. Both complexes showed excellent catalytic activity in transforming various organonitriles into the corresponding primary amines selectively using the inexpensive
通过使用廉价的硅烷聚甲基氢硅氧烷 (PMHS) 催化还原腈来可持续生产特殊胺,有望取代适用性有限且涉及使用昂贵金属催化剂的传统合成路线。晚期 3d 金属配合物的使用为合理设计廉价催化剂提供了一个极好的平台,通过金属-配体协同作用精确控制其电子和结构特征。在这种情况下,我们实际设计了两种基于镍 ( II ) 和钴 ( II ) 的配合物,具有氧化还原活性的亚氨基-o-苯并醌配体。这些化合物通过一系列光谱方法、循环伏安法和单晶 X 射线衍射进行了表征。两种配合物在使用廉价的 PMHS 选择性地将各种有机腈转化为相应的伯胺方面表现出优异的催化活性。通过各种控制实验和光谱研究评估配合物的催化性能,并通过详细的计算计算揭示了非无辜的亚氨基-o-苯并醌配体和金属( II )离子协同性在控制关键反应活性和选择性方面的关键作用催化还原过程中的金属氢化物中间体。