Dacemazine
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Dacemazine (INN, also known as Ahistan and Histantine)[1] is a phenothiazine derivative which acts as a histamine antagonist at the H1 subtype. First described in 1951, it was never marketed as a drug on its own, although a combination of dacemazine and di-tert-butylnaphthalenesulfonate was sold as an antispasmodic and antitussive under the trade name Codopectyl.[1] It was also assessed as a possible anticancer drug.[2]
Synthesis
Amide formation between phenothiazine (1) and chloroacetyl chloride (2) gives 10-(Chloroacetyl)-phenothiazine [786-50-5] (3). The subsequent displacement of the remaining halogen with dimethylamine (4) completes the synthesis of dacemazine (5).
References
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- ↑ a b Script error: No such module "citation/CS1". Retrieved on August 2, 2008 through Google Book Search.
- ↑ Script error: No such module "Citation/CS1".
- ↑ Dahlbom, Richard; Ekstrand, Torsten; Rubin, Inger; Saluste, E.; Stjernholm, R.; Ehrensvärd, G. (1951). "10-Aminoacylphenothiazines. I. Aminoacetyl and Aminopropionyl Derivatives." Acta Chemica Scandinavica. 5: 102–114. doi:10.3891/acta.chem.scand.05-0102.
- ↑ Wassermann, N. et al, Rev. Chim., 1959, 10, 81 (synth) (only until 1991)
- ↑ Kano; Makisumi Shionogi Kenkyusho Nenpo, 1957 , # 7 p. 511,514 Chem.Abstr., 1958 , p. 10094.
- ↑ John W. Cusic, U.S. patent 2694705 (1954 to G. D. Searle & Co.).
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