ethyl 2-(8-hydroxy-1-oxo-2,3-dihydrocyclopenta[a]naphthalen-2-yl)acetate

α-Carboxy-β-(7-methoxy-2-naphthyl)-propionsaeure

8-methoxy-2,3-dihydrocyclopenta[a]naphthalen-1-one

3-(7-methoxynaphthalen-2-yl)propanoic acid

ethyl 2-(8-methoxy-1-oxo-2,3-dihydrocyclopenta[a]naphthalen-2-yl)acetate