A New 9-Methoxyyohimbine-Type Indole Alkaloid from Mitragyna africanus

Hiromitsu Takayama; Hayato Ishikawa; Mariko Kitajima; Norio Aimi; Baba Muhammad Aji

doi:10.1248/cpb.52.359

Notes

A New 9-Methoxyyohimbine-Type Indole Alkaloid from Mitragyna africanus

Hiromitsu Takayama, Hayato Ishikawa, Mariko Kitajima, Norio Aimi, Baba Muhammad Aji

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Keywords: Mitragyna, alkaloid, indole, NMR

JOURNAL FREE ACCESS

2004 Volume 52 Issue 3 Pages 359-361

DOI https://doi.org/10.1248/cpb.52.359

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Abstract

A new yohimbine-type indole alkaloid (1) was isolated from the stem bark of Mitragyna africanus (WILLD.) collected in Nigeria, along with known seven Corynanthe-type oxindole alkaloids, two secoiridoids, three lignans, and a quinovic acid derivative. Their structures were elucidated by spectroscopic analyses.

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