Methanol → HCID 11741148, compound

HRID 2263566Notes

Reaction equation

HRID 2263566 reaction equation
[CH3:1][C@@H:2]([C@@H:8]1[C@@:12]2([CH3:27])[CH2:13][CH2:14][C@@H:15]3[C@@:20]4([CH3:26])[CH2:21][CH2:22][C@@H:23]([OH:25])[CH2:24][C@H:19]4[CH2:18][CH2:17][C@H:16]3[C@@H:11]2[CH2:10][CH2:9]1)[CH2:3][CH2:4][C:5]([OH:7])=[O:6].[CH3:28]O>Cl.O1CCOCC1.ClCCl>[CH3:1][C@@H:2]([C@@H:8]1[C@@:12]2([CH3:27])[CH2:13][CH2:14][C@@H:15]3[C@@:20]4([CH3:26])[CH2:21][CH2:22][C@@H:23]([OH:25])[CH2:24][CH:19]4[CH2:18][CH2:17][C@H:16]3[C@@H:11]2[CH2:10][CH2:9]1)[CH2:3][CH2:4][C:5]([O:7][CH3:28])=[O:6]

Participants

6

Reactant 2

HCID 887MethanolHCID 9903Lithocholic Acid

Product 1

HCID 11741148HCID 11741148, compoundYield 97%

Reagents, catalysts & solvents 3

HCID 313Hydrochloric AcidSolventHCID 6344DichloromethaneSolventHCID 312751,4-DioxaneSolvent

Procedure

To a solution of the lithocholic acid 1 (25.1 g, 66.4 mmol) in anhydrous methanol (100 mL), 4M HCl in 1,4-dioxane (100 mL) was added and the reaction mixture stirred at ambient temperature overnight. The reaction mixture became heterogeneous. The reaction mixture was diluted with dichloromethane (300 mL) and the organic layer was washed with saturated NaHCO3 (2×200 mL). The organic layer was concentrated and dried under high vacuum overnight to provide the pure ester as a white solid (25.7 g, 97%). The analytical and spectral data were consistent with that of reported values (Rensen, Patrick C. N.; van Leeuwen, Steven H.; Sliedregt, Leo A. J. M.; Van Berkel, Theo J. C.; Biessen, Erik A. L. Design and Synthesis of Novel N-Acetylgalactosamine-Terminated Glycolipids for Targeting of Lipoproteins to the Hepatic Asialoglycoprotein Receptor. Journal of Medicinal Chemistry (2004), 47(23), 5798-5808.).

Workup

  1. washthe organic layer was washed with saturated NaHCO3 (2×200 mL)
  2. concentrationThe organic layer was concentrated
  3. customdried under high vacuum overnight

Sources & evidence

ORD record
ord-5053baa147ad418896c77b4c73a3bcfe
Source dataset
uspto-grants-2010_12
Patent number
US07851615B2

Reaction notes

Loading…