(5-Methoxy-1,3-dimethyl-2-oxo-2,3-dihydro-1H-indol-3-yl)-acetaldehyde

methyl (S)‐2‐(5‐methoxy‐1,3‐dimethyl‐2‐oxoindolin‐3‐yl)acetate

(3aS,8aS)-5-Methoxy-3a-methyl-2,3,3a,8a-tetrahydro-furo[2,3-b]indole-8-carboxylic acid benzyl ester

(1S,4aS,9aR)-3-Hydroxy-6-methoxy-4a-methyl-1-vinyl-3,4,4a,9a-tetrahydro-1H-pyrano[3,4-b]indole-9-carboxylic acid benzyl ester

(2R,3S)-2-((S)-1-Hydroxy-allyl)-3-(2-hydroxy-ethyl)-5-methoxy-3-methyl-2,3-dihydro-indole-1-carboxylic acid benzyl ester