So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Patrick, Donald A.; Gillespie, J. Robert; McQueen, Joshua; Hulverson, Matthew A.; Ranade, Ranae M.; Creason, Sharon A.; Herbst, Zackary M.; Gelb, Michael H.; Buckner, Frederick S.; Tidwell, Richard R. researched the compound: (R)-(-)-3-Fluoropyrrolidine Hydrochloride( cas:136725-55-8 ).Recommanded Product: (R)-(-)-3-Fluoropyrrolidine Hydrochloride.They published the article 《Urea Derivatives of 2-Aryl-benzothiazol-5-amines: A New Class of Potential Drugs for Human African Trypanosomiasis》 about this compound( cas:136725-55-8 ) in Journal of Medicinal Chemistry. Keywords: aryl benzothiazolamine preparation trypanosomicide human African trypanosomiasis treatment. We’ll tell you more about this compound (cas:136725-55-8).
A previous publication from this lab explored the antitrypanosomal activities of novel derivatives of 2-(2-benzamido)ethyl-4-phenylthiazole, which had been identified as a hit against Trypanosoma brucei, the causative agent of human African trypanosomiasis. While a number of these compounds, particularly the urea analogs, were quite potent, these mols. as a whole exhibited poor metabolic stability. The present work describes the synthesis of 65 new analogs arising from medicinal chem. optimization at different sites on the mol. The most promising compounds were the urea derivatives of 2-aryl-benzothiazol-5-amines. One such analog, (S)-2-(3,4-difluorophenyl)-5-(3-fluoro-N-pyrrolidylamido)benzothiazole (I) was chosen for in vivo efficacy studies based upon in vitro activity, metabolic stability, and brain penetration. This compound attained 5/5 cures in murine models of both early and late stage human African trypanosomiasis, representing a new lead for the development of drugs to combat this neglected disease.
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Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem