(1R,3S)-(1-benzyl-4-hydroxy-3-methylbutyl)carbamic acid tert-butyl ester

(1R,2'R,1'''R,3'''S)-{1-[2'-{4''-[1'''-benzyl-4'''-(tert-butyldiphenylsilanyloxy)-3'''-methylbutylcarbamoyl]thiazol-2''-yl}-2'-(tert-butyldiphenylsilanyloxy)ethyl]-2-methylpropyl}carbamic acid benzyl ester

(1R,3R,1''R,3''S)-acetic acid 1-[4'-(1''-benzyl-4''-hydroxy-3''-methylbutylcarbamoyl)thiazol-2'-yl]-3-benzyloxycarbonylamino-4-methylpentyl ester