(3S,5S,6R)-3-(5-Benzyloxy-2,4-dimethoxy-3-methyl-benzyl)-2-oxo-5,6-diphenyl-morpholine-4-carboxylic acid tert-butyl ester

(1R,3S)-3-(tert-Butyl-dimethyl-silanyloxymethyl)-8-hydroxy-1-hydroxymethyl-5,7-dimethoxy-6-methyl-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester

(1R,3S)-8-Allyloxy-1-allyloxymethyl-3-(tert-butyl-dimethyl-silanyloxymethyl)-5,7-dimethoxy-6-methyl-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester

(1R,3S)-8-Allyloxy-1-allyloxymethyl-3-(tert-butyl-dimethyl-silanyloxymethyl)-5,7-dimethoxy-6-methyl-1,2,3,4-tetrahydro-isoquinoline