Synthesis and biological evaluation of novel N, N′-disubstituted urea and thiourea derivatives as potential anti-melanoma agents
摘要:
Two series of urea and thiourea derivatives (1a-11a, 1b-11b) have been synthesized; all the 22 compounds were reported for the first time. Their anti-proliferative activities against the melanoma cell line B16-F10 were evaluated. Among the compounds tested, compound 6b exhibited the most potent activity in melanoma cells growth inhibition (IC50 = 0.33 mu M). The bioassay tests showed that anti-proliferative activities of these novel compounds were possibly caused by inhibition of ERK1/2 phosphorylation level. Therefore, compound 6b can be a potential anti-melanoma agent and an inhibitor of ERK1/2 phosphorylation deserving further research.
Synthesis and biological evaluation of novel N, N′-disubstituted urea and thiourea derivatives as potential anti-melanoma agents
摘要:
Two series of urea and thiourea derivatives (1a-11a, 1b-11b) have been synthesized; all the 22 compounds were reported for the first time. Their anti-proliferative activities against the melanoma cell line B16-F10 were evaluated. Among the compounds tested, compound 6b exhibited the most potent activity in melanoma cells growth inhibition (IC50 = 0.33 mu M). The bioassay tests showed that anti-proliferative activities of these novel compounds were possibly caused by inhibition of ERK1/2 phosphorylation level. Therefore, compound 6b can be a potential anti-melanoma agent and an inhibitor of ERK1/2 phosphorylation deserving further research.
Synthesis of an Fe–Pd bimetallic catalyst for <i>N</i>-alkylation of amines with alcohols <i>via</i> a hydrogen auto-transfer methodology
作者:Peng-yu Wu、Guo-ping Lu、Chun Cai
DOI:10.1039/d0gc03725g
日期:——
systems, and thus the exploration of a highly efficient and recyclable heterogeneous catalyst remains meaningful. In this work, a novel bimetalliccatalyst, Fe10Pd1/NC500 derived from bimetallic MOF NH2-MIL-101(Fe10Pd1), has been prepared, and the catalyst exhibits superior catalytic performance for the N-alkylation of amines with alcohols via a hydrogen auto-transfer methodology. High yields of the
Niobium Oxide Supported on Cubic Spinel Cobalt Oxide as an Efficient Heterogeneous Catalyst for the Synthesis of Imines via Dehydrogenative Coupling of Amines and Alcohols
作者:Balasaheb D. Bankar、Krishnan Ravi、Saravanan Subramanian、Ankush V. Biradar
DOI:10.1007/s10562-022-03943-2
日期:2022.12
results are confirmed further by PXRD d-spacing. Whereas cobaltoxide exists in (2 2 2), (3 1 1), and (1 1 1) facet, which confirms the crystal cubic spinel structure of Co3O4. The TPD ammonia desorption Nb2O5/Co3O4 result confirms the presence of 0.441 mmol/g acidic sites. The synthesized Nb2O5/Co3O4 catalyst effectively transformed aromatic amines and benzyl alcohols to imines through a dehydrogenative
开发用于脱氢转化的可持续化学过程为选择性合成含氮化合物带来了可喜的结果。我们报道了使用共沉淀法合成 Nb 2 O 5 /Co 3 O 4催化剂,然后是水热法。FESEM、NH 3 -TPD、PXRD、FT-IR吡啶吸附研究和XPS用于表征合成材料的化学和结构性质。FESEM分析显示Nb均匀地分布在Co 3 O 4的表面上。3.3 wt% Nb 在 Co 3 O 4上显示出 (2 5 0) 和 (0 0 1) 晶面,并且这些结果通过 PXRD d-间距进一步证实。而氧化钴存在于(2 2 2)、(3 1 1)和(1 1 1)晶面,这证实了Co 3 O 4的晶体立方尖晶石结构。TPD 氨解吸 Nb 2 O 5 /Co 3 O 4结果证实存在 0.441 mmol/g 酸性位点。合成的Nb 2 O 5 /Co 3 O 4催化剂通过脱氢偶联反应有效地将芳香胺和苯甲醇转化为亚胺。3.3 wt% Nb 2
Redox-Neutral Intramolecular Dearomative Spirocyclization of Phenols Induced by Visible Light
spirocyclohexadienone. Mechanistic experiments revealed that the arylhalide was reduced to aryl radical via the single-electron transfer (SET) process under visible light irradiation. The electrophilic addition of an aryl radical with the phenolate anion moiety gave a radical anion intermediate, which recycled the photocatalyst by a second SET process.
本文描述的是由可见光诱导的氧化还原中性分子内脱芳环化。光化学环化由酚盐阴离子衍生的光催化剂催化,并产生螺环己二烯酮。机理实验表明,芳基卤化物在可见光照射下通过单电子转移 (SET) 过程还原为芳基自由基。芳基与酚盐阴离子部分的亲电加成产生自由基阴离子中间体,通过第二个 SET 过程回收光催化剂。
A reusable MOF supported single-site nickel-catalyzed direct N-alkylation of anilines with alcohols
The directN-alkylation of amines with alcohols is an efficient route through a borrowing hydrogen (BH) strategy. Herein, a highly selective, and reusable Ni(II)-bipyridine-based metal-organic framework (MOF) catalyst was designed for this organic transformation. This earth-abundant metal-based metal-organic framework (MOF) catalyst significantly outperform their homogeneous analogues and the immobilized