Tetrabutylammonium Fluoride → 6-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-[4-(hydroxy-methoxy-phosphoryl)-but-2-enyl]-4-methyl-hex-4-enoic Acid

HRID 32964

Reaktionsgleichung

Reaktionsgleichung von HRID 32964
C[Si](C)(C)CC[O:5][C:6](=[O:42])[CH:7]([CH2:33][CH:34]=[CH:35][CH2:36][P:37]([OH:41])([O:39][CH3:40])=[O:38])[CH2:8][C:9]([CH3:32])=[CH:10][CH2:11][C:12]1[C:13]([O:25]CC[Si](C)(C)C)=[C:14]2[C:18](=[C:19]([CH3:23])[C:20]=1[O:21][CH3:22])[CH2:17][O:16][C:15]2=[O:24].CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1>[OH:25][C:13]1[C:12]([CH2:11][CH:10]=[C:9]([CH3:32])[CH2:8][CH:7]([CH2:33][CH:34]=[CH:35][CH2:36][P:37]([OH:41])([O:39][CH3:40])=[O:38])[C:6]([OH:42])=[O:5])=[C:20]([O:21][CH3:22])[C:19]([CH3:23])=[C:18]2[C:14]=1[C:15](=[O:24])[O:16][CH2:17]2

Komponenten

4

Edukt 2

HCID 2724141Tetrabutylammonium FluorideHCID 765461902-[4-(Hydroxy-methoxy-phosphoryl)-but-2-enyl]-6-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-4-methyl-hex-4-enoic acid 2-trimethylsilanyl-ethyl ester

Produkt 1

HCID 725636706-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-[4-(hydroxy-methoxy-phosphoryl)-but-2-enyl]-4-methyl-hex-4-enoic AcidAusbeute 100,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of 2-[4-(hydroxy-methoxy-phosphoryl)-but-2-enyl]-6-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-4-methyl-hex-4-enoic acid 2-trimethylsilanylethyl ester (11 mg, 0.016 mmol) in THF (1 mL) was added TBAF (50 μL, 1M solution in THF) at room temperature. The solution was stirred for 16 hours and concentrated. The solution was dried under reduced pressure and re-suspended in DMF (0.8 mL) and water (0.25 mL). The solution was filtered through Acrodisc (13 mm syringe filter with a 0.45 μm Nylon membrane) and purified by RP HPLC using a Phenomenex Synergi 5μ Hydro RP 80A column (50×21.2 mm) with eluents of H2O, 0.1% TFA-CH3CN, 0.1% TFA. The product from the column was subjected to ion exchange chromatography (Sodium salt form of Dowex 50WX8-400) using a 2×4.5 cm column eluting with H2O-MeOH (1:1) to provide 7.5 mg of the desired product as an oil. 1H NMR (300 MHz, CDCl3) δ 1.80 (s, 3H), 2.01-2.29 (m, 5H), 2.11 (s, 3H), 2.35 (d, 2H, J=22 Hz), 3.38 (d, 2H, J=7 Hz), 3.53 (d, 3H, J=11 Hz), 3.75 (s, 3H), 5.19 (s, 2H), 5.26 (t, 1H, J=6 Hz), 5.43-5.54 (m, 2H) ppm; 31P (121.4 MHz, CDCl3) δ 23.5 ppm; MS (m/z) 469.2 [M+H]+, 491.3 [M+Na]+.

Aufarbeitung

  1. concentrationconcentrated
  2. customThe solution was dried under reduced pressure
  3. filtrationThe solution was filtered through Acrodisc (13 mm syringe
  4. filtrationfilter with a 0.45 μm Nylon membrane) and
  5. custompurified by RP HPLC
  6. washeluting with H2O-MeOH (1:1)

Quellen und Nachweise

ORD-Eintrag
ord-999e3c801abe44519db78d698a2e9c23
Quelldatensatz
uspto-grants-2008_09
Patentnummer
US07427636B2

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