Studies on Phenazines. XXVIII. Nuclear Magnetic Resonance Studies. II. Ring Protons of Halogenophenazines and Methyl, Methoxylprotons of Substituted Phenazines.
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概要
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The NMR spectra of chlorophenazines were measured and analyzed as the one of representative examples of substituted phenazines. Comparing with previously reported methoxyphenazines, ring protons of chlorophenazines showed weakly influenced signal patterns in which the anisotropic effects of chlorine atoms were observed in opposite sign to the methoxyl's. The significant abnormality in its shielding power of beta substituent on phenazine ring is conceivable to propose an additional interest for clarification of the reactivity and the polarizability of beta substituent. Concerning to the reactivity of substituent, methyl and methoxyl proton shifts of alpha and beta substituted phenazines were examined giving explicit descrimination in their absorption region as were seen in ring protons.
- 公益社団法人日本薬学会の論文
- 1966-04-25
著者
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森田 豊
Faculty of Pharmaceutical Sciences, Josai University
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森田 豊
Products Formulation Research Laboratory Eisai Co. Ltd.
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