A new 9-methoxyyohimbine-type indole alkaloid from Mitragyna africanus |
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Authors: | Takayama Hiromitsu Ishikawa Hayato Kitajima Mariko Aimi Norio Aji Baba Muhammad |
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Affiliation: | Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan. htakayam@p.chiba-u.ac.jp |
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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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