Lithium Hydroxide → (2S,3R,4R,5S,6R)-2-[4-cyclopropyl-3-(2,3-dihydro-benzo[1,4]dioxin-6-ylmethyl)-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol

HRID 1914500Notes

Reaction equation

HRID 1914500 reaction equation
C([O:4][C@H:5]1[C@H:10]([O:11]C(=O)C)[C@@H:9]([O:15]C(=O)C)[CH:8]([C:19]2[CH:24]=[CH:23][C:22]([CH:25]3[CH2:27][CH2:26]3)=[C:21]([CH2:28][C:29]3[CH:38]=[CH:37][C:32]4[O:33][CH2:34][CH2:35][O:36][C:31]=4[CH:30]=3)[CH:20]=2)[O:7][C@@H:6]1[CH2:39][O:40]C(=O)C)(=O)C.[OH-].[Li+]>CO.C1COCC1.O>[CH:25]1([C:22]2[CH:23]=[CH:24][C:19]([C@H:8]3[C@H:9]([OH:15])[C@@H:10]([OH:11])[C@H:5]([OH:4])[C@@H:6]([CH2:39][OH:40])[O:7]3)=[CH:20][C:21]=2[CH2:28][C:29]2[CH:38]=[CH:37][C:32]3[O:33][CH2:34][CH2:35][O:36][C:31]=3[CH:30]=2)[CH2:27][CH2:26]1

Participants

4

Reactant 2

HCID 3939Lithium HydroxideHCID 67115857HCID 67115857, compound

Product 1

HCID 52913411(2S,3R,4R,5S,6R)-2-[4-cyclopropyl-3-(2,3-dihydro-benzo[1,4]dioxin-6-ylmethyl)-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triolYield 96.1%

Reagents, catalysts & solvents 1

HCID 21892291Methanol tetrahydrofuran waterSolvent

Procedure

To a stirred solution of acetic acid (2R,3R,4R,5S)-3,4,5-triacetoxy-6-[4-cyclopropyl-3-(2,3-dihydro-benzo[1,4]dioxin-6-ylmethyl)-phenyl]-tetrahydro-pyran-2-ylmethyl ester (10.5 g, 17.61 mmol) in methanol:THF:water 3:2:1 (120 mL) was added lithium hydroxide (813 mg, 19.37 mmol). After stirring for 2 h at room temperature, the volatiles were evaporated under reduced pressure. The resulting residue was taken up in ethyl acetate (150 mL) and washed with brine (75 mL), brine containing 10 mL of 5% aqueous KHSO4 (75 mL), and brine (20 mL) again, then dried over sodium sulfate and concentrated to furnish (2S,3R,4R,5S,6R)-2-[4-cyclopropyl-3-(2,3-dihydro-benzo[1,4]dioxin-6-ylmethyl)-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol (7.25 g)

Workup

  1. customthe volatiles were evaporated under reduced pressure
  2. washwashed with brine (75 mL), brine containing 10 mL of 5% aqueous KHSO4 (75 mL), and brine (20 mL) again
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-1f38486db69f4689ba163bab26f74cb8
Source dataset
uspto-grants-2013_12
Patent number
US08614195B2

Reaction notes

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