1: [14C]-3-Methylindole With triethylamine; phosphorus trichoride in toluene T=-65 - -20°C; 32 h; Heating / reflux; 2: 4,5-dihydroxy-2,7-di-tert-butyl-9,9-dimethyl-xanthene in toluene T=20°C; 16 h; Heating / reflux;

1: With peracetic acid; acetic acid in chloroform T=5 - 20°C; 20 h; 2: With potassium hydroxide; water in toluene 3: With hydrogenchloride in toluene