Wenger RM, Martin K, Timbers C, Tromelin A. Structure of Cyclosporine and Its Metabolites: Total Synthesis of Cyclosporine Metabolites Formed by Oxidation at Positions 4 and 9 of Cyclosporine. Preparation of Leucine-4-cyclosporine, (γ-Hydroxy)-N-methyl-leucine-9-cyclosporine and Leucine-4-(γ-hydroxy)-N-methyl-leucine-9-cyclosporine. Chimia [Internet]. 1992 Aug. 19 [cited 2024 Apr. 29];46(7-8):314. Available from: https://www.chimia.ch/chimia/article/view/1992_314