Studies on 1-Alkyl-2 (1H)-pyridone Derivatives. XV. The Confirmation of the Configuration of the Diels-Alder Adduct of 1-Methyl-2 (1H)-pyridone by NMR Spectroscopy using Deuteration
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In the previous paper, it was reported that the structure of the adduct (II), which was produced from the Diels-Alder reaction of 1-methyl-2-(1H) pyridone (I) with maleic anhydride, was estimated to be 2-methyl-3-oxo-2-azabicyclo [2. 2. 2] oct-7-ene-5,6-endodicarboxylic anhydride. It was also mentioned that the structure of the diester compound (IV), which was obtained by the epimerization, was estimated to be dimethyl 2-methyl-3-oxo-2-azabicyclo [2. 2. 2] oct-7-ene-5-endo-6-exo-dicarboxylate. In this work, the same reactions were carried out on 3,5-dideutero-1-methyl-2 (1H)-pyridone (I_D). The structures of II and IV were unambiguously confirmed to the same as those in the previous paper.
- 公益社団法人日本薬学会の論文
- 1972-02-25
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