ChemInform Abstract: STRUCTURE AND ABSOLUTE STEREOCHEMISTRY OF 19‐EPI‐(+)‐ECHITOVENILINE. A NEW INDOLE ALKALOID OF THE LEAVES OF ALSTONIA VENENATA R.BR

ChemInform Abstract: STRUCTURE AND ABSOLUTE STEREOCHEMISTRY OF 19‐EPI‐(+)‐ECHITOVENILINE. A NEW INDOLE ALKALOID OF THE LEAVES OF ALSTONIA VENENATA R.BR Structure and absolute stereochemistry of 19-epi-(+)-echitoveniline Structures and absolute stereochemistry of (-)-echitoveniline, (-)-11-methoxyechitoveniline and (-)-11-methoxyechitovenedine—new indole alkaloids of 16-Epivenenatine and 16-epialstovenine, new stereomers from Alstonia venenata Alstolenine, 19,20-dihydropolyneuridine and other minor alkaloids of the leaves of Alstonia venenata Chemical constituents of alstonia venenata R.Br. Echitoserpidine: A new alkaloid of the fruits of Alstonia venenata Alstogustine and 19-epialstogustine, quaternary indole alkaloids from Alstonia angustifolia Indole Alkaloids fromAlstonia angustifolia The alkaloids of the fruits of R.Br. echitovenidine and (+)-minovincinine