4′-(4-Methoxy­phen­yl)-1-methyl­chroman-3-spiro-3′-pyrrolidine-2′-spiro-2′′-indan-4,1′′,3′′-trione

In the title compound, C₂₈H₂₃NO₄, the pyrrolidine ring adopts a twist conformation and the pyran ring in the chromanone system adopts a half-chair conformation. The mol­ecules associate via C—H...O inter­actions to form R₂²(18) dimers.

4′-(4-Methoxy­phen­yl)-1′-methyl-9H-fluorene-9-spiro-3′-pyrrolidine-2′-spiro-2′′-indan-1′′,3′′-dione

In the title compound, C₃₂H₂₅NO₃, the pyrrolidine ring and the five-membered ring of the indan moiety adopt twist and envelope conformations, respectively. The mol­ecules in the crystal structure are linked by an inter­molecular C—H...O hydrogen bond, forming chains running along the [01] direction.