Angustilodine, an Unusual Pentacyclic Indole Alkaloid from Alstonia.

Angustilodine, an Unusual Pentacyclic Indole Alkaloid from Alstonia. Angustilodine, an Unusual Pentacyclic Indole Alkaloid from Alstonia Angustilodine, an Unusual Pentacyclic Indole Alkaloid from <i>Alstonia</i> Angustilobine and andranginine type indole alkaloids and an uleine–secovallesamine bisindole alkaloid from Alstonia angustiloba Angustilobine and andranginine type indole alkaloids and an uleine–secovallesamine bisindole alkaloid from Alstonia angustiloba Alstilobanines A–E, new indole alkaloids from Alstonia angustiloba Alstilobanines A–E, new indole alkaloids from Alstonia angustiloba Indole Alkaloids fromAlstonia angustifolia Alstogustine and 19-epialstogustine, quaternary indole alkaloids from Alstonia angustifolia Angustimaline, an unusual nitrogenous compound from Alstonia angustifolia