7'-methyl-3',4'-dihydrospiro-1'-one

Spiro[2H-indene-2,3'-pyrrolidine]-2',5'-dione, 5-amino-1,3-dihydro-

N-(2',5'-dioxo-1,3-dihydrospiro[indene-2,3'-pyrrolidin]-5-yl)-2-[2,5-dioxo-1-(2,2,2-trifluoroethyl)-3',4'-dihydro-2'H,3H-spiro[imidazolidine-4,1'-naphthalen]-3-yl]acetamide

(+/-)-1,3-dihydro-2'H',5'H-spiro[indene-2,3'-pyrrolidine]-2',5'-dione

(+/-)-4-nitro-1,3-dihydro-2'H,5'H-spiro[indene-2,3'-pyrrolidine]-2',5'-dione