title: Letter: Biomimetic polyene cyclizations. Asymmetric induction by a chiral center remote from the initiating cationic center. 11alpha-methylprogesterone.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003500:Cyclization; D011090:Polyenes; D011374:Progesterone / Q000031:analogs & derivatives* / Q000138:chemical synthesis
chemical_list: D011090:Polyenes; D011374:Progesterone