Synthesis and Structure-Activity Relationships of Novel 7-Substituted 1,4-Dihydro-4-oxo-1-(2-thiazolyl)-1,8-naphthyridine-3-carboxylic Acids as Antitumor Agents. Part 1 was written by Tomita, Kyoji;Tsuzuki, Yasunori;Shibamori, Koh-ichiro;Tashima, Masanori;Kajikawa, Fumie;Sato, Yuji;Kashimoto, Shigeki;Chiba, Katsumi;Hino, Katsuhiko. And the article was included in Journal of Medicinal Chemistry in 2002.Recommanded Product: Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate This article mentions the following:
Title compounds, e.g. I (R = H2NCH2CH2NH, 1-pyrrolidinyl, 3-hydroxy-1-pyrrolidinyl), possess moderate cytotoxic activity. Structure-activity relationships of title compounds were investigated by changing substituents at N-1 and C-7 positions and the core ring structure itself and evaluated the synthesized compounds against several murine and human tumor cell lines. The 2-thiazolyl group at the N-1 position of the naphthyridine structure is the best substituent for antitumor activity and regarding core ring structure, the naphthyridine derivative is the most active followed by pyridopyrimidine analog. At the C-7 position, aminopyrrolidine derivatives are more effective than other amines or thioether derivatives I (R = 3-amino-4-methoxy-1-pyrrolidinyl, 3-amino-3-methyl-1-pyrrolidinyl, 3-aminopyrrolidinyl) were determined to be effective in vitro and in vivo antitumor assays, and their activity was comparable to that of etoposide. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Recommanded Product: Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate).
Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Recommanded Product: Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics