Structures of Acid B and Related Compounds, Oxidation Products of Lycoramine

SHIGERU KOBAYASHI; TOSHIHIRO TOKUMOTO; MASARU KIHARA; YASUHIRO IMAKURA; TETSURO SHINGU; JUNJI KOIZUMI; SHOJIRO UYEO

doi:10.1248/cpb.34.4050

SHIGERU KOBAYASHI, TOSHIHIRO TOKUMOTO, MASARU KIHARA, YASUHIRO IMAKURA, TETSURO SHINGU, JUNJI KOIZUMI, SHOJIRO UYEO

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Keywords: nitric acid oxidation

JOURNAL FREE ACCESS

1986 Volume 34 Issue 10 Pages 4050-4055

DOI https://doi.org/10.1248/cpb.34.4050

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Abstract

The structures of "acid B" and its monoethyl ester, which are stepwise oxidation products of lycoramine (2), an Amaryllidaceae alkaloid, and the structure of a nitro derivative of acid B, an oxidation product of oxolycoramine (5) with nitric acid, were established as 6, 10 and 12, respectively, on the basis of spectral and chemical evidence.

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