2,2-Dimethyl-propionic acid 4-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5,6-dihydro-quinolin-2-ylmethyl ester

2,2-Dimethyl-propionic acid (1aS,7bR)-4-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-1a,7b-dihydro-1-oxa-7-aza-cyclopropa[a]naphthalen-6-ylmethyl ester

2,2-Dimethyl-propionic acid (1aS,7bR)-3-bromo-4-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-1a,2,3,7b-tetrahydro-1-oxa-7-aza-cyclopropa[a]naphthalen-6-ylmethyl ester

2,2-Dimethyl-propionic acid (1aS,7bR)-4-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-1a,2,3,7b-tetrahydro-1-oxa-7-aza-cyclopropa[a]naphthalen-6-ylmethyl ester

(2S,3S)-2-[(7R,8S)-4-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-(2,2-dimethyl-propionyloxymethyl)-8-hydroxy-7,8-dihydro-quinolin-7-ylamino]-3-methyl-pentanoic acid tert-butyl ester