title: Letter: A stereospecific total synthesis of racemic 11alpha-hydroxyprogesterone via a biomimetic polyene cyclization.
mesh_terms: D003500:Cyclization; D006908:Hydroxyprogesterones / Q000138:chemical synthesis*; D011090:Polyenes; D013237:Stereoisomerism
chemical_list: D006908:Hydroxyprogesterones; D011090:Polyenes