ChemInform Abstract: BIOMIMETIC POLYENE CYCLIZATIONS. TOTAL SYNTHESIS OF DL‐19‐NOR‐4‐PREGNEN‐20‐ONE. ASYMMETRIC INDUCTION BY THE INITIATING CENTERJohn A. Peters, William S. Johnson, Tonny A. P. Posthumus et al.|Chemischer Informationsdienst|1980Cited by 1