Water → Travoprost

HRID 517373

Reaktionsgleichung

[OH:1][C@@H:2]1[CH2:6][C@H:5]([OH:7])[C@H:4]([CH2:8]/[CH:9]=[CH:10]\[CH2:11][CH2:12][CH2:13][C:14]([OH:16])=[O:15])[C@H:3]1/[CH:17]=[CH:18]/[C@@H:19]([OH:32])[CH2:20][O:21][C:22]1[CH:27]=[CH:26][CH:25]=[C:24]([C:28]([F:31])([F:30])[F:29])[CH:23]=1.C([O-])([O-])=O.[K+].[K+].I[CH:40]([CH3:42])[CH3:41].O>CN(C=O)C.C(OCC)(=O)C>[OH:1][C@@H:2]1[CH2:6][C@H:5]([OH:7])[C@H:4]([CH2:8]/[CH:9]=[CH:10]\[CH2:11][CH2:12][CH2:13][C:14]([O:16][CH:40]([CH3:42])[CH3:41])=[O:15])[C@H:3]1/[CH:17]=[CH:18]/[C@@H:19]([OH:32])[CH2:20][O:21][C:22]1[CH:27]=[CH:26][CH:25]=[C:24]([C:28]([F:29])([F:30])[F:31])[CH:23]=1

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

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.

Aufarbeitung

stirringthe mixture was stirred for 10 min
customThe aqueous layer was separated
extractionextracted with ethyl acetate (30 mL)
dry with materialthe combined organic layer was dried over magnesium sulfate
concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag: ord-b01c344131ba4eb3ab2d88be4fe851b3
Quelldatensatz: uspto-grants-2015_08
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US09115109B2

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