Figure 1

Chemical structure of compounds occurring in Aspidosperma nitidum. 10-methoxydihydrocorynantheol (1), corynantheol (2), aspidospermine (3), quebrachamine (4), yohimbine (5), carboxylic harman acid (6), 3-carboxylic ethylharman (7), dihydrocorynantheol (8), dehydrositsiriquine (9), braznitidumine (10).