Alschomine and Isoalschomine, New Alkaloids from the Leaves of Alstonia scholaris

Fumiko ABE; Rong-Fu CHEN; Tatsuo YAMAUCHI; Nobuhiro MARUBAYASHI; Ikuhiko UEDA

doi:10.1248/cpb.37.887

Fumiko ABE, Rong-Fu CHEN, Tatsuo YAMAUCHI, Nobuhiro MARUBAYASHI, Ikuhiko UEDA

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Keywords: Alstonia scholaris, Apocynaceae, indole alkaloid, alschomine, 4, 5-secopicrinine, X-ray analysis

JOURNAL FREE ACCESS

1989 Volume 37 Issue 4 Pages 887-890

DOI https://doi.org/10.1248/cpb.37.887

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Abstract

A new indole alkaloid, named alschomine, was obtained from the leaves of Alstonia scholaris planted in Taipei, along with its C-5 isomer, isoalschomine, and the known alkaloids of this plant, picriinine, picralinal and nareline. The structure of alschomine was determined by X-ray analysis, supported by spectral considerations.

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