title: Steroidal adducts. VI. Steroids as probes of the relative reactivities of enophiles and dienophiles. Reactions of dicyanoacetylene with ergosterol derivatives.
mesh_terms: D000114:Acetylene; D055598:Chemical Phenomena; D002621:Chemistry; D004875:Ergosterol / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009570:Nitriles; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D009570:Nitriles; D000114:Acetylene; D004875:Ergosterol