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Water → Methyl 6'-Desmethyl-4'-tosylmycophenolate

HRID 1757200
Notes
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Reaction equation

HRID 1757200 reaction equation
[OH:1][C:2]1[C:10]([CH3:11])=[C:9]2[C:5]([C:6](=[O:12])[O:7][CH2:8]2)=[C:4]([O:13][S:14]([C:17]2[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=2)(=[O:16])=[O:15])[C:3]=1[CH2:24][CH:25]=[C:26]([CH3:32])[CH2:27][CH2:28][C:29]([OH:31])=[O:30].[C:33]1(C)C=CC(S(O)(=O)=O)=CC=1.O.C(OCC)(=O)C>CO>[OH:1][C:2]1[C:10]([CH3:11])=[C:9]2[C:5]([C:6](=[O:12])[O:7][CH2:8]2)=[C:4]([O:13][S:14]([C:17]2[CH:18]=[CH:19][C:20]([CH3:23])=[CH:21][CH:22]=2)(=[O:16])=[O:15])[C:3]=1[CH2:24]/[CH:25]=[C:26](\[CH3:32])/[CH2:27][CH2:28][C:29]([O:31][CH3:33])=[O:30]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 6101p-Toluenesulfonic acidHCID 8857Ethyl AcetateHCID 536610776-(1,3-Dihydro-6-hydroxy-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoic acid

Product 1

HCID 10672181Methyl 6'-Desmethyl-4'-tosylmycophenolate

Reagents, catalysts & solvents 1

HCID 887
Methanol
Solvent

Procedure

A solution of (E) 6-(1,3-dihydro-6-hydroxy-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoic acid (23 g) and p-toluenesulfonic acid (0.8 g) in methanol (150 ml) was stirred for 18 hours then added to water and ethyl acetate. The organc layer was dried and evaporated and the residue was chromatographed on silica gel, eluting with hexane:ethyl acetate: methanol 40:58:2, to afford methyl (E) 6-(1,3-dihydro-6-hydroxy-7-methyl-3-oxo-4-p-toluenesulfonyloxyisobenzofuran-5-yl)-4-methyl-4-hexenoate.

Workup

  1. customThe organc layer was dried
  2. customevaporated
  3. customthe residue was chromatographed on silica gel
  4. washeluting with hexane:ethyl acetate: methanol 40:58:2

Sources & evidence

ORD record
ord-92f9e612315a41f3b02c23be7efd8583
Source dataset
uspto-grants-1995_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05444072

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes