Acetals of lactams and acid amides. 54. New synthesis of pyrimido[4,5-f]pyrrolizines
A synthesis of pyrimido[4,5-f]pyrrolizine derivatives has been carried out, which is based on the intramolecular cyclization of 7-functionally substituted 6-amino-pyrrolizines with the participation of substituents in the 6- and 7-positions.