Studies on the N-oxides of .PI.-deficient N-heteroaromatics. XXIV. Photochemistry of acridine 10-oxides.
نویسندگان
چکیده
منابع مشابه
Alkaloid N-oxides of Amaryllidaceae
Ungiminorine N-oxide was isolated from Puncrutium maritimum, and homolycorine N-oxide and O-methyl lycorenine N-oxide from Lapiedra martinezii. These compounds represent the first examples of naturally occurring Noxides from the Amaryllidaceae.
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The dipolar cycloaddition reactivity of N-(1-naphthy1)-1,4- benzoquinoneimine N-oxide and N-phenyl-1,4- naphthoquinoneimine Noxide are investigated, The latter gives the expected adducts with common dipolarophiles such as acrylonitryle, methyl methacrylate, dimethylacetylene dicarboxylate and N-phenylmaleimide. The reactivity of the former nitrone is found to be minimal. It undergoes, how...
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A mild method for the regioselective C2-bromination of fused azine N-oxides is presented, employing tosic anhydride as the activator and tetra-n-butylammonium bromide as the nucleophilic bromide source. The C2-brominated compounds are produced in moderate to excellent yields and with excellent regioselectivity in most cases. The potential extension of this method to other halogens, effecting C2...
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The reaction of cinchonidine (cinchonine)-derived ammonium salts with nitroolefins in the presence of Cs2CO3 to afford optically active isoxazoline N-oxides with excellent ee and high de values has been developed.
متن کاملMutagenicity of derivatives of the oncogenic purine N-oxides.
Acetoxy esters of purine W-oxides inactivate and induce mutations in Bacillus jwà ̈n/Ã1-transforming DNA. The es ters were the chemical models available for the sulfate es ters believed to be formed in vivo. When metabolic suscep tibilities were taken into consideration, there is a reasonable correlation between the mutagenicity of various acetoxy es ters and the oncogenicity of the parent W-oxi...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1975
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.23.2818