tert-butyl (1-(7'-amino-3',4'-dihydro-2'H-spiro[cyclohexane-1,1'-naphthalen]-6'-yl)-3-hydroxypropan-2-yl)carbamate

tert-butyl (1-hydroxy-3-(7'-(methylamino)-3',4'-dihydro-2'H-spiro[cyclohexane-1,1'-naphthalen]-6'-yl)propan-2-yl)carbamate

tert-butyl (1-(7'-formamido-3',4'-dihydro-2'H-spiro[cyclohexane-1,1'-naphthalen]-6'-yl)-3-hydroxypropan-2-yl)carbamate

benzyl N-(6'-(2-((tert-butoxycarbonyl)amino)-3-hydroxypropyl)-3',4'-dihydro-2'H-spiro[cyclohexane-1,1'-naphthalen]-7'-yl)-N-methyl-L-valinate

tert-butyl (1-hydroxy-3-(7'-nitro-3',4'-dihydro-2'H-spiro[cyclohexane-1,1'-naphthalen]-6'-yl)propan-2-yl)carbamate