p. 2117 - 2134
(1996)(5S)-5-(hydroxymethyl)-5H-furan-2-one
tert-butyldimethylsilyl chloride
benzylamine
(2S,3S,4S)-3-Benzylamino-4,5-bis-(tert-butyl-dimethyl-silanyloxy)-2-ethyl-pentanoic acid
(3S,4S)-3-Benzylamino-4,5-bis-(tert-butyl-dimethyl-silanyloxy)-pentanoic acid
(S)-1-Benzyl-4-[(S)-1,2-bis-(tert-butyl-dimethyl-silanyloxy)-ethyl]-azetidin-2-one
(2S,3S,4S)-3-Benzylamino-5-(tert-butyl-dimethyl-silanyloxy)-2-ethyl-4-hydroxy-pentanoic acid
(3S,4S,5S)-4-Benzylamino-5-(tert-butyl-dimethyl-silanyloxymethyl)-3-ethyl-dihydro-furan-2-one