(4S)-2-benzyloxy-4-methoxycarbonyl-4-methyl-5-oxo-4,5-dihydrooxazole

(3S)-1-benzyl-6-benzyloxy-4-bromo-3-(tert-butyldimethylsilanyloxymethyl)indoline

2-benzyloxycarbonyloamino-2-methylmalonic acid dimethyl ester

(2R)-2-benzyloxycarbonylamino-2-methylmalonic acid monomethyl ester

(3S)-1-benzyl-6-benzyloxy-4-bromo-3-hydroxymethylindoline