(11S,11aS)-2-Eth-(E)-ylidene-11-hydroxy-7,8-dimethoxy-5-oxo-2,3,11,11a-tetrahydro-1H,5H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-10-carboxylic acid allyl ester

{5-Benzyloxy-2-[(S)-2-(tert-butyl-dimethyl-silanyloxymethyl)-4-eth-(E)-ylidene-pyrrolidine-1-carbonyl]-4-methoxy-phenyl}-carbamic acid allyl ester

{5-Benzyloxy-2-[(S)-2-(tert-butyl-dimethyl-silanyloxymethyl)-4-oxo-pyrrolidine-1-carbonyl]-4-methoxy-phenyl}-carbamic acid allyl ester

{5-Benzyloxy-2-[(2S,4R)-2-(tert-butyl-dimethyl-silanyloxymethyl)-4-hydroxy-pyrrolidine-1-carbonyl]-4-methoxy-phenyl}-carbamic acid allyl ester

{5-Benzyloxy-2-[(S)-4-eth-(E)-ylidene-2-hydroxymethyl-pyrrolidine-1-carbonyl]-4-methoxy-phenyl}-carbamic acid allyl ester