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(2007/10/02)(S)-2-((R)-4-tert-Butoxycarbonylmethyl-5-oxo-2-thiophen-2-yl-4,5,6,7-tetrahydro-[1,4]thiazepin-6-ylamino)-4-phenyl-butyric acid ethyl ester
[(2R,6R)-5-Oxo-2-thiophen-2-yl-6-(trityl-amino)-[1,4]thiazepan-4-yl]-acetic acid tert-butyl ester
[(R)-5-Oxo-2-thiophen-2-yl-6-(trityl-amino)-6,7-dihydro-5H-[1,4]thiazepin-4-yl]-acetic acid tert-butyl ester
(2R,6R)-2-Thiophen-2-yl-6-(trityl-amino)-[1,4]thiazepan-5-one
((R)-6-Amino-5-oxo-2-thiophen-2-yl-6,7-dihydro-5H-[1,4]thiazepin-4-yl)-acetic acid tert-butyl ester