5ar-p-Tolyl-6at,7t,8,9,10t,10at-hexahydro-11H,13H-7,10-methanobenzoxazino-benzoxazin-13-one

Article abstract of DOI:10.1107/S010827019400497X

The structure of the pentacyclic title compound, C23H23NO3, was established by X-ray diffraction.The exo positions of the aryl group, indicated by the NMR data, were confirmed by the relevant torsion angles: C11-O10-C2-C19 = -79.7 (3), C4-N3-C2-C19 = -98.5 (3) and C13-N3-C2-C19 = 86.2 (4) deg.The position of the aryl group is stabilized by a C24-H24^...N3 interaction ...N3 2.480 (2), C24^...N3 2.855 (4) Angstroem, C24-H24^...N3 98.7 (2) deg>.The conformations of the benzoxazine rings I and II are twist-boat (¹T₃) and screw-boat (¹S₆), respectively.