A New 9‐Methoxyyohimbine‐Type Indole Alkaloid from Mitragyna africanus.

A New 9‐Methoxyyohimbine‐Type Indole Alkaloid from Mitragyna africanus. A New 9-Methoxyyohimbine-Type Indole Alkaloid from Mitragyna africanus A New 9-Methoxyyohimbine-Type Indole Alkaloid from Mitragyna africanus New heteroyohimbine-type oxindole alkaloid from the leaves of Thai Mitragyna hirsuta New heteroyohimbine-type oxindole alkaloid from the leaves of Thai Mitragyna hirsuta Structure Elucidation and Chiral-Total Synthesis of a New Indole Alkaloid, (−)-9-Methoxymitralactonine, Isolated from Mitragyna speciosa in Malaysia New indole alkaloids from the leaves of Malaysian Mitragyna speciosa Heteroyohimbinoid type oxindole alkaloids from Mitragyna parvifolia Alkaloids from <i>Mitragyna speciosa</i> (Korth.) Isolation, characterization, and NMR spectroscopic data of indole and oxindole alkaloids from Mitragyna speciosa