(4R,5S)-5-benzyloxymethyl-1-tert-butoxycarbonyl-2-<2-<(4S,5R)-5-methoxymethoxymethyl-2,2-dimethyl-1,3-dioxolane-4-carbonyl>-3-methoxyphenyl>acetylpyrrolidine

(1R,3R)-2,2,2-trichloroethyl 1-acetoxymethyl-3-<(2R,5S)-5-benzyloxymethyl-1-tert-butoxycarbonylpyrrolidin-2-yl>-8-methoxy-3,4-dihydro-2(1H)-isoquinolinecarboxylate

2-<(4S,5R)-5-methoxymethoxymethyl-2,2-dimethyl-1,3-dioxolane-4-carbonyl>-3-methylanisole

2-<(4R,5R)-5-benzyloxymethyl-2,2-dimethyl-1,3-dioxolane-4-carbonyl>-3-methylanisole

(1R,3R)-3-<(2R,5S)-4-benzyloxymethyl-1-tert-butoxycarbonylpyrrolidin-2-yl>-1-<(4R,5R)-5-methoxymethoxymethyl-2,2-dimethyl-1,3-dioxolan-4-yl>-8-methoxy-1,2,3,4-tetrahydroisoquinoline