Sodium borohydride → HCID 68015203, compound

HRID 1913020Notes

Reaction equation

HRID 1913020 reaction equation
[CH2:1]([O:8][C@H:9]1[C@H:14]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C@@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C@@:12]([C:33]2[CH:38]=[CH:37][C:36]([Cl:39])=[C:35]([CH2:40][C:41]3[CH:46]=[CH:45][C:44]([O:47][CH2:48][CH3:49])=[C:43]([F:50])[CH:42]=3)[CH:34]=2)([O:31][CH3:32])[O:11][C@:10]1([CH2:53][OH:54])[CH:51]=[O:52])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[BH4-].[Na+]>>[CH2:1]([O:8][C@H:9]1[C@H:14]([O:15][CH2:16][C:17]2[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=2)[C@@H:13]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C@@:12]([C:33]2[CH:38]=[CH:37][C:36]([Cl:39])=[C:35]([CH2:40][C:41]3[CH:46]=[CH:45][C:44]([O:47][CH2:48][CH3:49])=[C:43]([F:50])[CH:42]=3)[CH:34]=2)([O:31][CH3:32])[O:11][C:10]1([CH2:51][OH:52])[CH2:53][OH:54])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

3

Reactant 2

HCID 4311764Sodium borohydrideHCID 86685129HCID 86685129, compound

Product 1

HCID 68015203HCID 68015203, compoundYield 14%

Procedure

(2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[(4-ethoxy-3-fluoro-phenyl)methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-carbaldehyde 4k (7.9 g, 10.45 mmol) was dissolved in 50 mL of mixed solution (THF and MeOH, v:v=2:3), followed by addition of sodium borohydride (794 mg, 20.9 mmol). The reaction mixture was stirred for 30 minutes. Thereafter, the reaction mixture was concentrated under reduced pressure after a small amount of acetone was added and the resulting residue was purified by silica gel chromatography with elution system A to obtain the title compound [(3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[(4-ethoxy-3-fluoro-phenyl)methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-yl]methanol 4m (1.11 g, colourless grease), yield: 14.1%.

Workup

  1. concentrationThereafter, the reaction mixture was concentrated under reduced pressure after a small amount of acetone
  2. additionwas added
  3. customthe resulting residue was purified by silica gel chromatography with elution system

Sources & evidence

ORD record
ord-15405acc2c2145d6830adc3ead366132
Source dataset
uspto-grants-2013_12
Patent number
US08609622B2

Reaction notes

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