Conodiparines A-D, new bisindoles from Tabernaemontana. Reversal of vincristine-resistance with cultured cells

Conodiparines A-D, new bisindoles from Tabernaemontana. Reversal of vincristine-resistance with cultured cells Conodiparines A-D, new bisindoles from Tabernaemontana. Reversal of vincristine-resistance with cultured cells New Bisindole Alkaloids from Tabernaemontana corymbosa New Bisindole Alkaloids from <i>Tabernaemontana </i><i>corymbosa</i> Conodirinines A and B, Novel Vobasine‐Iboga Bisindoles Incorporating an Additional Tetrahydro‐1,3‐oxazine Unit on the Vobasinyl Moiety Conodusarine, a New Biologically Active Bisindole Alkaloid from Tabernaemontana divaricata Ibogan, Tacaman, and Cytotoxic Bisindole Alkaloids from <i>Tabernaemontana</i>. Cononusine, an Iboga Alkaloid with Unusual Incorporation of a Pyrrolidone Moiety Ibogan, Tacaman, and Cytotoxic Bisindole Alkaloids from <i>Tabernaemontana</i>. Cononusine, an Iboga Alkaloid with Unusual Incorporation of a Pyrrolidone Moiety Tabercorymines A and B, Two Vobasinyl–Ibogan-Type Bisindole Alkaloids from Tabernaemontana corymbosa New Tabernamine Derivatives from Tabernaemontana