title: Biogenetic-type total synthesis. 24,25-Dihydrolanosterol, 24,25-dihydro-  13(17) -protosterol, isoeuphenol, (-)-isotirucallol, and parkeol.
mesh_terms: D001673:Biodegradation, Environmental; D003500:Cyclization; D003510:Cyclohexanes; D004988:Ethers, Cyclic; D007810:Lanosterol / Q000138:chemical synthesis; D008968:Molecular Conformation; D013261:Sterols / Q000138:chemical synthesis*
chemical_list: D003510:Cyclohexanes; D004988:Ethers, Cyclic; D013261:Sterols; D007810:Lanosterol