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Acetic Acid → 5-(2,4-Bis-benzyloxy-5-isobutyl-phenyl)-4-(4-morpholin-4-ylmethyl-phenyl)-isoxazole-3-carboxylic acid ethylamide

HRID 2097304
Notes
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Reaction equation

HRID 2097304 reaction equation
[CH2:1]([NH:3][C:4]([C:6]1[C:10]([C:11]2[CH:16]=[CH:15][C:14]([CH:17]=O)=[CH:13][CH:12]=2)=[C:9]([C:19]2[CH:24]=[C:23]([CH2:25][CH:26]([CH3:28])[CH3:27])[C:22]([O:29][CH2:30][C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)=[CH:21][C:20]=2[O:37][CH2:38][C:39]2[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=2)[O:8][N:7]=1)=[O:5])[CH3:2].[NH:45]1[CH2:50][CH2:49][O:48][CH2:47][CH2:46]1.C(O)(=O)C.C([BH3-])#N.[Na+]>CO>[CH2:1]([NH:3][C:4]([C:6]1[C:10]([C:11]2[CH:12]=[CH:13][C:14]([CH2:17][N:45]3[CH2:50][CH2:49][O:48][CH2:47][CH2:46]3)=[CH:15][CH:16]=2)=[C:9]([C:19]2[CH:24]=[C:23]([CH2:25][CH:26]([CH3:28])[CH3:27])[C:22]([O:29][CH2:30][C:31]3[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=3)=[CH:21][C:20]=2[O:37][CH2:38][C:39]2[CH:40]=[CH:41][CH:42]=[CH:43][CH:44]=2)[O:8][N:7]=1)=[O:5])[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 8083MorpholineHCID 5003444Sodium cyanoborohydrideHCID 247735315-(2,4-Bis-benzyloxy-5-isobutyl-phenyl)-4-(4-formyl-phenyl)-isoxazole-3-carboxylic acid ethylamide

Product 1

HCID 247737085-(2,4-Bis-benzyloxy-5-isobutyl-phenyl)-4-(4-morpholin-4-ylmethyl-phenyl)-isoxazole-3-carboxylic acid ethylamide

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

5-(2,4-Bis-benzyloxy-5-isobutyl-phenyl)-4-(4-formyl-phenyl)-isoxazole-3-carboxylic acid ethylamide (1 eq) was dissolved in methanol and powdered 3 Å sieves were added. Morpholine (2 eq) was added, followed by acetic acid (5 eq). After stirring for 30 minutes, sodium cyanoborohydride (2 eq) was added portionwise and the suspension was stirred under nitrogen at ambient temperature for 16 hours. The reaction mixture was filtered through celite and concentrated to dryness. Column chromatography, eluting with 5% MeOH in DCM gave 5-(2,4-bis-benzyloxy-5-isobutyl-phenyl)-4-(4-morpholin-4-ylmethyl-phenyl)-isoxazole-3-carboxylic acid ethylamide as a colourless oil.

Workup

  1. additionpowdered 3 Å sieves were added
  2. stirringthe suspension was stirred under nitrogen at ambient temperature for 16 hours
  3. filtrationThe reaction mixture was filtered through celite and
  4. concentrationconcentrated to dryness
  5. washColumn chromatography, eluting with 5% MeOH in DCM

Sources & evidence

ORD record
ord-de5bd32a4b9a4ffbad54718d357bb020
Source dataset
uspto-grants-2013_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08450310B2

Reaction notes

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