Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Synthesis of a Pyridone Alkaloid, Cerpegin
Keizo MATSUO, Takahiko ARASE
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Keywords: cerpegin, pyridone alkaloid, 2-methoxycarbonyl-4-methyl-2-penten-4-olide, penylthioacetonitrile, Ceropegia juncea
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1995 Volume 43 Issue 12 Pages 2091-2094

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Abstract
A new pyridone alkaloid, cerpegin, was synthesized in five steps starting from the Michael reaction between phenylthioacetonitrile and 2-methoxycarbonyl-4-methyl-2-penten-4-olide. Catalytic hydrogenation of a nitrile group in the presence of a conjugated carbon-carbon double bond was performed by addition of 1 eq of concentrated HCl.
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© The Pharmaceutical Society of Japan
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