Acetic acid (2R,3S,4R,5R,6R)-3-acetoxy-2-acetoxymethyl-5-acetylamino-6-((S)-3,4-bis-benzyloxy-butoxy)-tetrahydro-pyran-4-yl ester

7-(3-Acetoxy-propoxy)-4-((S)-2-benzyloxy-3-hydroxy-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 2-methyl ester

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)-5-isocyanato-1H-indole-2-carboxylic acid methyl ester