| Abstract: | The fruits of Melodinus henryi Craib (Apocynaceae) are used in folk medicine for the treatment of children meningitis and fractureetc. Eight indole alkaloids have been isolated from the roots and fruits of Melodinus henryi Craib by aluminum oxide and silica gel chro- matography. Seven of them were identified as tabersonine (1), 11-methoxy-tabersonine (2), lo- chnerinine (3), △14-vincamine (4), 16-epi-△14-vincamine (5), △14-eburnamine (6) and 19, 20- dihydrocondylocapine (7). The other one, namely, tenuicausine (8), is a dimeric indole alkaloid. Their structures were elucidated by spectral and chemical methods. |
