Palladium-Catalyzed Asymmetric Hydrogenation of Functionalized Ketones
作者:You-Qing Wang、Sheng-Mei Lu、Yong-Gui Zhou
DOI:10.1021/ol051007u
日期:2005.7.1
[reaction: see text]. A novel catalytic system for asymmetrichydrogenation of functionalized ketones has been developed using a Pd/bisphosphine complex as the catalyst in 2,2,2-trifluoroethanol. The reaction exhibits high enantioselectivity, and up to 92.2% ee was obtained.
The preparation and in vitro antiproliferative activity of phthalimide based ketones on MDAMB-231 and SKHep-1 human carcinoma cell lines
作者:Sau Hing Chan、Kim Hung Lam、Chung Hin Chui、Roberto Gambari、Marcus Chun Wah Yuen、Raymond Siu Ming Wong、Gregory Yin Ming Cheng、Fung Yi Lau、Yiu Kwok Au、Chor Hing Cheng
DOI:10.1016/j.ejmech.2008.10.024
日期:2009.6
The 'one pot' condensation reaction for the synthesis and potent anti proliferative inhibition of alpha-phthalimide based ketones is reported here. 2-Phthalimide-1-(4-fluoro-phenyl)ethanone (5) showed the best growth inhibition on human MDAMB-231 breast carcinoma and SKHep-1 hepatoma cell lines. Preliminary studies showed that the reported bioactivity may be due to the presence of strong electronegative fluorine group at the para-position of the aryl ring. (C) 2008 Elsevier Masson SAS. All rights reserved.
2-(4-Biphenylyl)ethylamines: Potential Cardiovascular and CNS Agents
作者:J. Sam、K. Aparajithan、R. Shafik
DOI:10.1002/jps.2600570403
日期:1968.4
Dual Parasiticidal Activities of Phthalimides: Synthesis and Biological Profile against
<i>Trypanosoma cruzi</i>
and
<i>Plasmodium falciparum</i>
作者:Paulo André Teixeira de Moraes Gomes、Marcos Veríssimo de Oliveira Cardoso、Ignes Regina Santos、Fabiano Amaro de Sousa、Juliana Maria Conceição、Vanessa Gouveia de Melo Silva、Denise Duarte、Raquel Pereira、Rafael Oliveira、Fátima Nogueira、Luiz Carlos Alves、Fabio André Brayner、Aline Caroline Silva Santos、Valéria Rêgo Alves Pereira、Ana Cristina Lima Leite
DOI:10.1002/cmdc.202000331
日期:2020.11.18
data showed that compound4 j was able to induce necrosis and apoptosis in trypomastigotes. Analysis by scanning electron microscopy showed that T. cruzi trypomastigote cells treated with compounds 3 h, 3 t, and 4 j at IC50 concentrations promoted changes in the shape, flagella, and surface of the parasite body similar to those observed in benznidazole‐treated cells. The compounds with the highest
恰加斯病和疟疾是两种被忽视的热带病 (NTD),在 149 个国家的热带和亚热带地区流行。由于无症状感染者的移民,恰加斯也出现在欧洲、美国和澳大利亚。在缺乏有效疫苗的情况下,两种疾病的控制都依赖于化疗。然而,寄生虫耐药性的出现正在使目前可用的药物过时。因此,开发新分子至关重要。邻苯二甲酰亚胺、缩氨基硫脲和 1,3-噻唑已被用作支架以获得抗疟原虫和抗克氏锥虫药物。在此,我们展示了 24 种邻苯二甲酰亚胺-缩氨基硫脲 ( 3 a - x ) 和 14 种邻苯二甲酰亚胺 - 噻唑 ( 4 a -n ) 和相应的针对克氏锥虫、恶性疟原虫的生物活性,以及针对哺乳动物细胞系的细胞毒性。其中一些化合物在 RAW 264.7 细胞中以低细胞毒性浓度显示出对T. cruzi 的有效抑制。活性最强的化合物3 t (IC 50 =3.60 μM)、3 h (IC 50 =3.75 μM) 和4 j (IC 50
From tropos to atropos: 5,5′-bridged 2,2′-bis(diphenylphosphino)biphenyls as chiral ligands for highly enantioselective palladium-catalyzed hydrogenation of α-phthalimide ketones
A class of atropisomeric diphosphine ligands with a wide range of dihedral angles has been developed. X-ray study of the Pd(II) complexes of these ligands showed that as the bridge length increased, the dihedral angles and the ligand bite angles increased as well, while an excessive increase in bridge length had a reverse effect. It was found that there was a correlation between the ligand dihedral