By use of the aza Diels-Alder reaction a series of aminoisoquinolines
and aminoquinolines have been elaborated to provide an effective synth
esis of diverse diazasteroids. In particular, representative 1,11-diaz
a-, 3,11-diaza-, and 4,11-diazasteroids have been synthesized from cyc
lopentadiene. From dihydropyran a 4,11-diaza-15-oxa-D-homosteroid has
been obtained.