Water → Travoprost

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A solution of crude Travoprost acid (1.1 g from Example 9) in DMF (11 mL) was treated with K2CO3 (0.90 g, 6.5 mmol) and 2-iodopropane (0.74 g, 4.4 mmol). This mixture was then stirred at 80° C. for 2 hr under an atmosphere of nitrogen (TLC monitoring). Water (30 mL) and ethyl acetate (30 mL) were added and the mixture was stirred for 10 min. The aqueous layer was separated and extracted with ethyl acetate (30 mL), and the combined organic layer was dried over magnesium sulfate and concentrated under reduced pressure to give 1.0 g of crude Travoprost. The crude Travoprost was purified by column chromatography and then concentrated under reduced pressure to provide 0.89 g of Travoprost (78.3% yield, 2 steps). UPLC (ACQUITY UPLC HSS C18) analysis of the product showed that no isomer and impurities were detectable.

Herkunft & Nachweise