Supporting Information A Facile and Efficient Synthesis of (15R)-Latanoprost from Chiral Precursor Corey Lactone Diol K VIJENDHARa,b, B SRINIVASb and SATHYANARAYANA BOODIDA*,a a Department of Chemistry, JNTUH College of Engineering Jagtial, Karimnagar 505 501, India b R&D Division, Aspen Bio Pharma Labs Pvt. Ltd, Genome Vally, Turkapally, Hyderabad 500 078, India e-mail: bs14@jntuh.ac.in Table of Contents: 1. Figure S1: 1H-NMR Spectrum of compound 5 2. Figure S2 : 1H-NMR Spectrum of compound 6 3. Figure S3: 1H-NMR Spectrum of compound 8 4. Figure S4: 1H-NMR Spectrum of compound 9 5. Figure S5: 1H-NMR Spectrum of compound 11 6. Figure S6: IH-NMR Spectrum of compound 13 7. Figure S7 : 1H-NMR Spectrum of compound 03 8. Figure S8 : 13C-NMR Spectrum of compound 05 9. Figure S9 : 13C-NMR Spectrum of compound 06 10. Figure S10 : 13C-NMR Spectrum of compound 08 11. Figure S11 : 13C-NMR Spectrum of compound 09 12. Figure S12 : 13C-NMR Spectrum of compound 03 13. Figure S13 : IR Spectrum of compound 03 14. Figure S14: HPLC spectrum of compound 03 15. Figure S15 : Mass spectrum of compound 03 1 16. Table S1: SOR Spectrum of compound 3 2 O Br Figure S1: 1H-NMR Spectrum of compound 5 O O P OMe OMe Figure S2 : 1H-NMR Spectrum of compound 6 3 O O OSi(Et)3 OSi(Et)3 Figure S3: 1H-NMR Spectrum of compound 8 O O OSi(Et)3 O Figure S4: 1H-NMR Spectrum of compound 9 4 O O OSi(Et)3 OSi(Et)3 Figure S5: 1H-NMR Spectrum of compound 11 (Et)3SiO COOiPr OSi(Et)3 OSi(Et)3 Figure S6: 1H-NMR Spectrum of compound 13 5 HO COOiPr OH OH Figure S7 : 1H-NMR Spectrum of compound 03 O Br Figure S8 : 13C-NMR Spectrum of compound 05 6 O O P OMe OMe Figure S9 : 13C-NMR Spectrum of compound 06 7 O O OSi(Et)3 OSi(Et)3 Figure S10 : 13C-NMR Spectrum of compound 08 O O OSi(Et)3 O Figure S11 : 13C-NMR Spectrum of compound 09 8 HO COOiPr OH OH Figure S12 : 13C-NMR Spectrum of compound 03 HO COOiPr OH OH Figure S13: IR Spectrum of compound 03 9 HO COOiPr OH Figure S14: HPLC spectrum of compound 03 HO COOiPr OH OH Figure S15 : Mass spectrum of compound 03 10 OH Table S1: SOR Spectrum of compound 3 11