7-(3-Acetoxy-propoxy)-4-((S)-2,3-bis-benzyloxy-propyl)-5-methoxycarbonylamino-1H-indole-2-carboxylic acid methyl ester

7-(3-Acetoxy-propoxy)-4-((S)-2,3-bis-benzyloxy-propyl)-1H-indole-2,5-dicarboxylic acid 5-benzyl ester 2-methyl ester

(S)-4,8-Dihydroxy-8,9-dihydro-3H,7H-pyrrolo[3,2-f]quinoline-2,6-dicarboxylic acid dimethyl ester