Regiospecific and stereoselective ene reaction of the A-ring methylcyclohexene moiety of polycyclic terpenoid systems with dimethyl acetylenedicarboxylate

1. Abad, A.
2. Agulló, C.
3. Cuñat, A.C.
4. Navarro, I.
5. De Arellano, C.R.