1-[(3aS,8bS)-8b-(2-methylbut-3-en-2-yl)-1,3a-dihydropyrrolo[2,3-b]indol-4-yl]ethanone 、
4-甲氧基苯异腈 、
N-tert-butyloxycarbonyl-tryptophanal 以
甲苯 为溶剂,
以35%的产率得到tert-butyl N-[(2S)-1-[(2S,3aS,8bS)-4-acetyl-2-[(4-methoxyphenyl)carbamoyl]-8b-(2-methylbut-3-en-2-yl)-2,3a-dihydro-1H-pyrrolo[2,3-b]indol-3-yl]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]carbamate