title: Unsaturated steroids. Part 3. Synthesis of steroidal 22,24(28)-dienes, erogosta-5,7,22,24(28)-tetraen-3beta-ol, and cholesta-5,7,22-trien-3beta-ol.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002782:Cholestenes / Q000138:chemical synthesis*; D004875:Ergosterol / Q000031:analogs & derivatives*; D008722:Methods; D013261:Sterols / Q000138:chemical synthesis*; D013265:Stigmasterol / Q000031:analogs & derivatives
chemical_list: D002782:Cholestenes; D013261:Sterols; D013265:Stigmasterol; D004875:Ergosterol