Sodium borohydride → [(3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-yl]methanol

HRID 1055538Notes

Reaction equation

HRID 1055538 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][C:48]([F:51])([F:50])[F:49])=[CH:43][CH:42]=3)[CH:34]=2)([O:31][CH3:32])[O:11][C@@:10]1([CH2:54][OH:55])[CH:52]=[O:53])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[BH4-].[Na+]>CO>[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:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)[C@@:12]([C:33]2[CH:38]=[CH:37][C:36]([Cl:39])=[C:35]([CH2:40][C:41]3[CH:42]=[CH:43][C:44]([O:47][C:48]([F:51])([F:50])[F:49])=[CH:45][CH:46]=3)[CH:34]=2)([O:31][CH3:32])[O:11][C:10]1([CH2:54][OH:55])[CH2:52][OH:53])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 118377847(2R,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy) phenyl]methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-carbaldehyde

Product 1

HCID 86685143[(3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-yl]methanolYield 46%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of (2R,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy) phenyl]methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-carbaldehyde 15m (1.26 g, 1.59 mmol) in anhydrous methanol (30 mL) was added sodium borohydride (120 mg, 23.18 mmol) in portions at 0° C. The mixture was warmed up to room temperature and stirred for 30 min. The reaction mixture was quenched with water (5 mL) and extracted with ethyl acetate (20 mL×2). The combined organic layers were washed with saturated aqueous sodium chloride (10 mL×2), dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to give the title compound 15n as yellow oil (570 mg, 46.0%). The compound was characterized by the following spectroscopic data: 1H NMR (400 MHz, CD3OD) δ(ppm): 7.58 (dd, 1H), 7.54 (d, 1H), 7.39 (d, 1H), 7.32 (m, 5H), 7.25 (m, 8H), 7.16 (d, 2H), 7.09 (m, 4H), 4.94 (d, 1H), 4.90 (d, 1H), 4.80 (s, 1H), 4.76 (d, 1H), 4.63 (t, 1H), 4.24 (t, 1H), 4.14 (dd, 2H), 4.07 (s, 3H), 4.00-3.93 (m, 2H), 3.77 (d, 1H), 3.37 (dd, 1H), 3.18 (s, 3H).

Workup

  1. customThe reaction mixture was quenched with water (5 mL)
  2. extractionextracted with ethyl acetate (20 mL×2)
  3. washThe combined organic layers were washed with saturated aqueous sodium chloride (10 mL×2)
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated in vacuo

Sources & evidence

ORD record
ord-672e81d19b114e819bcd992f8dc18be9
Source dataset
uspto-grants-2016_07
Patent number
US09394329B2

Reaction notes

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