2-phenyl-4-trityl-4H-1,3-oxazol-5-one

2-amino-4-[5-[(2S,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-3-methyl-2,6-dioxopyrimidin-1-yl]butanoic acid

[3-(cyclopenten-1-yl)-1,1-diphenylprop-2-ynyl]benzene

ethyl 2-trityloxyacetate

methyl 3-hydroxy-4-trityloxybutanoate