HCID 131721153, compound → HCID 131721152, compound

HRID 1533289Notes

Reaction equation

HRID 1533289 reaction equation
[NH:1](C(OCC1C=CC=CC=1)=O)[C@@H:2]([C:10]([NH:12][C@@H:13]([C:26]([O:28][CH3:29])=[O:27])[CH2:14][C:15]1[CH:20]=[CH:19][C:18]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[CH:17][CH:16]=1)=[O:11])[C@H:3]([CH3:9])[O:4][C:5]([CH3:8])([CH3:7])[CH3:6].[H][H]>CO.[Pd]>[NH2:1][C@@H:2]([C:10]([NH:12][C@@H:13]([C:26]([O:28][CH3:29])=[O:27])[CH2:14][C:15]1[CH:20]=[CH:19][C:18]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[CH:17][CH:16]=1)=[O:11])[C@H:3]([CH3:9])[O:4][C:5]([CH3:8])([CH3:7])[CH3:6]

Participants

5

Reactant 2

HCID 131721153HCID 131721153, compoundHCID 178418361HCID 178418361, compound

Product 1

HCID 131721152HCID 131721152, compoundYield 95%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

4.03 g of Z-D-Thr(tBu)-D-Tyr(tBu)-OMe (7.45 mmoles) were dissolved in 250 ml of CH3OH. After addition of 850 mg of 10% Pd on activated charcoal (Fluka, cat. No 75990) a hydrogen stream was blown on the solution at room temperature under shaking for 4 h. The hydrogenation reaction was monitored by TLC. After removal of the catalyst by filtration and evaporation of the filtrate, 2.88 g (7.08 mmoles, yield 95%) of H-D-Thr(tBu)-D-Tyr(tBu)-OMe were obtained in the form of pure oil (TLC).

Workup

  1. customwas blown on the solution at room temperature
  2. customThe hydrogenation reaction
  3. customAfter removal of the catalyst
  4. filtrationby filtration and evaporation of the filtrate

Sources & evidence

ORD record
ord-d6b7805c90d84385a4fa0dc0aa19dc08
Source dataset
uspto-grants-2001_03
Patent number
US06207807B1

Reaction notes

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