On the Structures of the Methylation Products of Sepedonin Derivatives with Diazomethane

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概要

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• Methylation of anhydrosepedonin and deoxysepedonin with diazomethane afforded three different kinds of dimethyl ethers. The structures of these ethers were examined by their reaction with liquid ammonia, and long-range coupling between methoxyl protons and the adjacent ring proton by nmr spectra from which the structures of 3, 4-dimethoxy, 2, 6-dimethoxy, and 2, 4-dimethoxy derivatives were clarified. The mass spectra of these dimethyl ethers showed the difference in the position of these methoxyls.

• 東北大学の論文

著者

• Seto Shuichi

  Chemical Research Institute Of Non-aqueous Solutions

• Takenaka Shunsuke

  Chemical Research Institute Of Non-aqueous Solutions

• Seto Shuichi

  Chemical Research Institue of Non-Aqueous Solutions, Tohoku University

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