Design, synthesis and structure-activity relationship optimization of phenanthridine derivatives as new anti-vitiligo compounds was written by Yang, Bi-juan;Fan, Shi-rui;Zhang, Xin-fang;Cai, Jie-yun;Ruan, Ting;Xiang, Zheng-rui;Ren, Juan;Hao, Xiao-jiang;Chen, Duo-zhi. And the article was included in Bioorganic Chemistry in 2022.Electric Literature of C4H5IN2 This article mentions the following:
Humans have been suffering from vitiligo for a long time. Target vitiligo drugs have yet been approved. Activation of Wnt/β-catenin signalling has potential in the therapeutic use of vitiligo, so exploring new drugs that specifically directly activate Wnt is worthwhile to obtain new anti-vitiligo agents. In this work, two portions design and synthesis were put into effect. firstly, 17 phenanthridine derivatives with C-4 substitutes were designed and synthesized, which compounds 4, 6, 12, 13 served as H-acceptor with protein showed enhance melanogenesis activity; Secondly, 7 hybrid new scaffolds of compounds were designed and synthesized, scaffold hopping compound 36 that aromatic benzene was replaced pyrazole on ring C showed enhance melanogenesis and tyrosinase activity; The last and most important, a comprehensive optimization and SARs of compound 36 were carried out, compounds 41 and 43 shared phenolic hydroxyl or 3-methyl-pyridine substitutes at C-7 position remarkably improved the capacity of melanogenesis and tyrosinase activity. Compound 43 were identified as new anti-vitiligo agents that specifically activate the Wnt/β-catenin signalling pathway by targeting Axin. Structure-activity relationship anal. implied that H-acceptor substitutions at the C-4 position and phenolic hydroxyl or pyridine substitutions at the C-7 position would improve the activities of the compounds These findings reveal a new therapeutic strategy for vitiligo, and compounds 41 and 43 may represent potential compounds for vitiligo treatment. In the experiment, the researchers used many compounds, for example, 5-Iodo-1-methyl-1H-pyrazole (cas: 34091-51-5Electric Literature of C4H5IN2).
5-Iodo-1-methyl-1H-pyrazole (cas: 34091-51-5) belongs to iodide derivatives. Organic iodides are widely used in organic synthesis. Halogenation of aromatic hydrocarbons is a very important reaction via an electrophilic aromatic substitution. Iodo alkanes participate in a variety of organic synthesis reactions, which include the SimmonsSmith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Electric Literature of C4H5IN2
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com