A new 9-methoxyyohimbine-type indole alkaloid from Mitragyna africanus.
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.
Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan. htakayam@p.chiba-u.ac.jp
Hiromitsu
H
Takayama
Hayato
H
Ishikawa
Mariko
M
Kitajima
Norio
N
Aimi
Baba Muhammad
BM
Aji
D026121:Indole Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification; D032065:Mitragyna / Q000737:chemistry*; D015394:Molecular Structure; D009549:Nigeria; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D015016:Yohimbine / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification*
C490067:9-methoxy-3-epi-alpha-yohimbine; D026121:Indole Alkaloids; D017705:Lignans; D015016:Yohimbine