A cycloaddition product of a chiral maleimide: 4-{(3aS*,6aS*)-4,6-dioxo-1-phenyl-5-[(1R)-1-phenylethyl]-1,3a,4,5,6,6a-hexahydropyrrolo[3,4-c]pyrazol-3-yl}phenyl acetate

Abstract

In the title molecule, C27H23N3O4, the two central five-membered rings form a dihedral angle of 63.66 (4)°. The absolute configuration was determined by analysis of Bijvoet pairs based on resonant scattering of light atoms, yielding a Hooft parameter y = −0.10 (7).