(-)-11-Mesyloxytabersonine

methyl 2-(3-(2-((((2S)-4-ethyl-5-hydroxytetrahydrofuran-2-yl)methyl)amino)ethyl)-6-((methylsulfonyl)oxy)-1H-indol-2-yl)acrylate

(5R,7S,12R,19S)-2,3-didehydro-7-hydroxy-16-[(methanesulfonyl)oxy]aspidospermidine-3-carboxylic acid methyl ester

methyl 2-(3-(2-((N-(((2S)-4-ethyl-5-hydroxytetrahydrofuran-2-yl)methyl)-2,4-dinitrophenyl)sulfonamido)ethyl)-6-((methylsulfonyl)oxy)-1H-indol-2-yl)acrylate

1-[tert-butoxycarbonyl]-3-[2-[[(2,4-dinitrophenyl)sulfonyl][[(2S)-4-ethyl-2,3-dihydro-2-furanyl]methyl]amino]ethyl]-α-methylene-6-[(methanesulfonyl)oxy]-1H-indole-2-acetic acid methyl ester