methyl 5-(2,2,2-trifluoro-N-methylacetamido)-2-lithiomethyl-4-benzoxazolecarboxylate

2-[(2R)-6-((1Ξ,3R)-4-hydroxy-1,3-dimethyl-butyl)-3c-methyl-3,4-dihydro-2H-pyran-2r-ylmethyl]-5-methylamino-benzooxazole-4-carboxylic acid methyl ester

2-[(2R)-6-((1Ξ,3R)-1,3-dimethyl-4-oxo-butyl)-3c-methyl-3,4-dihydro-2H-pyran-2r-ylmethyl]-5-methylamino-benzooxazole-4-carboxylic acid methyl ester

(R)-4-{2-[(1Ξ,3R)-4-(tert-butyl-diphenyl-silanyloxy)-1,3-dimethyl-butyl]-5,5-dimethyl-[1,3]dioxan-2-yl}-2-methyl-butyraldehyde

2-{(2R)-6-[(1Ξ,3R)-4-(tert-butyl-diphenyl-silanyloxy)-1,3-dimethyl-butyl]-3c-methyl-3,4-dihydro-2H-pyran-2r-ylmethyl}-5-(methyl-trifluoroacetyl-amino)-benzooxazole-4-carboxylic acid methyl ester