[(S)-2-(4-Benzyloxy-phenyl)-1-((S)-5-oxo-tetrahydro-furan-2-yl)-ethyl]-carbamic acid tert-butyl ester → 5(S)-[1(S)-(Boc-amino)-2-(p-hydroxyphenyl)ethyl]dihydrofuran-2-(3H)-one

HRID 1377197Notes

Reaction equation

HRID 1377197 reaction equation
[C:1]([NH:8][C@H:9]([C@H:25]1[O:29][C:28](=[O:30])[CH2:27][CH2:26]1)[CH2:10][C:11]1[CH:16]=[CH:15][C:14]([O:17]CC2C=CC=CC=2)=[CH:13][CH:12]=1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2]>CO.[Pd]>[C:1]([NH:8][C@H:9]([C@H:25]1[O:29][C:28](=[O:30])[CH2:27][CH2:26]1)[CH2:10][C:11]1[CH:16]=[CH:15][C:14]([OH:17])=[CH:13][CH:12]=1)([O:3][C:4]([CH3:6])([CH3:7])[CH3:5])=[O:2]

Participants

4

Reactant 1

HCID 54401688[(S)-2-(4-Benzyloxy-phenyl)-1-((S)-5-oxo-tetrahydro-furan-2-yl)-ethyl]-carbamic acid tert-butyl ester

Product 1

HCID 539985235(S)-[1(S)-(Boc-amino)-2-(p-hydroxyphenyl)ethyl]dihydrofuran-2-(3H)-one

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

Hydrogenating 3.0 g (7.29 mmol) of 5(S)-[1(S)-(Boc-amino)-2-(p-benzyloxyphenyl)ethyl]dihydrofuran-2-(3H)-one [preparation, see Example 1g)] in 100 ml of methanol with 0.6 g of 10% Pd/C results in the title compound, after filtering off the catalyst and evaporating the filtrate: tRet (II)=10.6 min.

Sources & evidence

ORD record
ord-6d7e3d0819c643468c0972c593444534
Source dataset
uspto-grants-1997_09
Patent number
US05663200

Reaction notes

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