期刊
TETRAHEDRON LETTERS
卷 41, 期 10, 页码 1575-1578出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(99)02333-3
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Transformation of secologanin and its ethylene acetal was investigated under acidic and basic conditions. Under acidic conditions both compounds gave benzaldehyde and an undefined fragment. A primary amine was incorporated into the substrate by lactamization with or without deglucosylation. Secondary and tertiary amines catalyzed lactonization of secologanin, but piperidine cleaved the acetal into methyl 3-piperidino-acrylate and an undefined C-7 unit which proved to be a phenyl group analogous to the indole alkaloid derivatives of secologanin. The biogenetic and biomimetic significance of the fragmentation is discussed. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.
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