Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Yoshiharu Sakuma"'
Publikováno v:
ChemInform. 21
Treatment of acetaminophen with an excess sodium nitrite under mildly acidic to neutral conditions results in smooth formation of new 3-nitro-4-acetamidophenol via N-acetyl-p-benzoquinone imine as an oxidation intermediate, which is a well-known, wid
Publikováno v:
Journal of the American Chemical Society. 98:830-835
Autor:
Fumio Yoneda, Yoshiharu Sakuma
Publikováno v:
Tetrahedron Letters. 22:3977-3980
Reactions of 4a,5-epoxy-5-deazaflavins with aqueous potassium carbonate, Vilsmeier reagent (dimethylformamide-phosphorus oxychloride), acetic anhydride-acetic acid, pyridine and triethanolamine gave the corresponding oxazolonoquinolines, 5-chloro-5-d
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :978-981
The oxidative coupling of 5,5′-arylmethylenebis-(6-alkylamino-3-methyluracils), prepared by the condensation of 6-alkylamino-3-methyluracils and arenecarbaldehydes, with diethyl azodiformate afforded the corresponding pyrimido[4,5-b]quinoline-2(3H)
Publikováno v:
Journal of Heterocyclic Chemistry. 24:251-254
The reaction of 5-deazaflavins with alcoholates was investigated and the direct hydride equivalent transfer from C1 of alcoholates to C5 of 5-deazaflavins was confirmed by chemical methods. 5-Alkoxy-10-butyl-3-methyl-5-deazaflavins were synthesized b
Publikováno v:
Chemistry Letters. 11:1309-1312
3,4-Disubstituted 4-deazatoxoflavin derivatives (II) were prepared by the condensation of 6-(1-methylhydrazino)uracils (I) with appropriate α-diketones. The compounds II oxidized long-chain alkylamines such as n-octylamine and n-dodecylamine besides
Publikováno v:
Tetrahedron Letters. 19:2803-2806
Publikováno v:
Chemical and Pharmaceutical Bulletin. 32:851-859
Publikováno v:
Chemistry Letters. 9:817-820
Treatment of 6-chloro-5-formyluracils with 2-benzylpyridines in dimethylformamide gave the corresponding 2H-pyrido[1′,2′:1,6]pyrido[2,3-d.]pyrimidine-2 ,4(3H)diones which are a bent type of 5-deazaflavin. Similarly, treatment of 6-chloro-5-formyl
Publikováno v:
Chemical and Pharmaceutical Bulletin. 21:926-930
1, 3-Dimethyl-4-thio-7-azalumazine derivatives (5-thiofervenulins) and 1, 3-dimethyl-4-thio-6-azalumazine derivatives (5-thioisofervenulins) were synthesized by the thiation of 1, 3-dimethyl-7-azalumazine derivatives (fervenulins) and 1, 3-dimethyl-6