Synthesis and Antitumor Activity of Novel Pyrimidinyl Pyrazole Derivatives. III. Synthesis and Antitumor Activity of 3-Phenylpiperazinyl-1-trans-propenes
Synthesis and Antitumor Activity of Novel Pyrimidinyl Pyrazole Derivatives. III. Synthesis and Antitumor Activity of 3-Phenylpiperazinyl-1-trans-propenes
A series of novel 3-[4-phenyl-1-piperazinyl]-1-[5-methyl-1-(2-pyrimidinyl)-4-pyrazolyl]-1-trans-propenes and related compounds were synthesized and evaluated by their cytotoxic activity against several tumor cell lines in vitro and in vivo antitumor activity against some tumor models when administered both intraperitoneally and orally. Compounds with the 3-chloropyridin-2-yl group (9g) and the 3-fluoro-5-substituted phenylpiperazinyl group (29b, c, and e) showed significantly potent cytotoxicity by in vitro testing. Among them, the 3-cyano-5-fluorophenyl derivative (29b) exhibited potent antitumor activity against several tumor cells including human carcinoma without causing undesirable effects in mice.
Ligand‐Promoted Rh
<sup>I</sup>
‐Catalyzed C2‐Selective C−H Alkenylation and Polyenylation of Imidazoles with Alkenyl Carboxylic Acids
作者:Haoqiang Zhao、Zhenli Luo、Ji Yang、Bohan Li、Jiahong Han、Lijin Xu、Wenzhen Lai、Patrick J. Walsh
DOI:10.1002/chem.202200441
日期:2022.6.27
readily available alkenyl carboxylicacids is reported. The reaction proceeds in a highly regio- and stereoselective manner, providing efficient access to C2-alkenylated imidazoles that are generally inaccessible by known C-H alkenylation methods. This transformation accommodates a wide range of alkenyl carboxylicacids, including challenging conjugated polyene carboxylicacids, and diversely decorated