Synthesis of 4H-pyrazolo- and 4H-pyrrolophenothiazin-4-one derivatives |
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Authors: | Seiko Nan'ya Kaname Katsuraya Yoshio Ueno Etur
Maekawa |
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Institution: | Seiko Nan'ya,Kaname Katsuraya,Yoshio Ueno,Eturǒ Maekawa |
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Abstract: | 5-Methyl- and 6-methyl-2-phenyl-2H-indazole-4,7-diones were condensed with 2-aminobenzenethiol or 6-substituted-3-aminopyridine-2(1H)thiones 4 to produce a new type of 5-methyl-2-phenyl-4H-pyrazolophenothiazin-4-ones or 8-substituted-7-aza-5-methyl-2-phenyl-4H-pyrazolophenothiazin-4-one derivatives. From 6-bromo-2,5-dimethyl-1,3-diphenyl-2H-isoindole-4,7-dione and 4 8-substituted-7-aza-2,5-dimethyl-1,3-diphenyl-4H-pyrrolophenothiazin-4-one derivatives were also prepared. |
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