Five-membered 2,3-dioxo heterocycles:: LIII.: Reaction of 3-Aroyl-1H-pyrrolo[2,1-c][1,4]benzoxazine-1,2,4-triones with substituted 1,3,3-trimethyl-3,4-dihydroisoquinolines.: A new approach to 13-aza analogs of steroids

3-Aroyl-1H-pyrrolo[2,1-c][1,4]benzoxazine-1,2,4-triones reacted with substituted 1,3,3-trimethyl-3,4-dihydroisoquinolines to give the corresponding 3-aroyl-4-hydroxy-1-(2-hydroxyphenyl)-5',5'-dimethyl-5',6'-dihydro-1H-spiro[pyrrole-2,2'-pyrrolo[2, 1-a]isoquinoline]-3',5-diones. 7',8'-Benzo derivatives of the latter may be regarded as 13-azagonane analogs having a spiro-fused pyrrole ring at C-16.