(4S,5R)-5-Benzyloxy-4-isobutyl-3-((R)-1-phenyl-ethyl)-[1,2,3]oxathiazinane 2-oxide

tert-butyl (2S,3S)-3-hydroxy-2-isobutyl-5-oxopyrrolidine-1-carboxylate

(4S,5R)-5-Benzyloxy-4-isobutyl-3-((R)-1-phenyl-ethyl)-[1,2,3]oxathiazinane 2,2-dioxide

(2R,3S)-2-Benzyloxy-5-methyl-3-((R)-1-phenyl-ethylamino)-hexan-1-ol

[(S)-1-((S)-4-Methoxy-6-oxo-3,6-dihydro-2H-pyran-2-yl)-3-methyl-butyl]-carbamic acid tert-butyl ester