Synthesis of some diaza and triazasteroidic compounds. (Diels-Alder reactions of diazoline- and triazoline-diones. Diaza and triaza cyclopentenophenanthrene derivatives).

1. Castellano, J.M.
2. Braña, M.F.
3. Lora-Tamayo, M.
4. Soto, J.L.