Hydrochloric Acid → HCID 131722144, compound

HRID 6615

Reaction equation

HRID 6615 reaction equation
[N:1]1([C:9]([O:11][CH2:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)=[O:10])[CH2:8][CH2:7][CH2:6][C@@H:2]1[C:3]([OH:5])=O.[NH2:19][C@H:20]([C:24]([N:26]([CH3:55])[C@H:27]([C:31]([N:33]1[CH2:54][CH2:53][CH2:52][C@H:34]1[C:35]([N:37]1[CH2:51][CH2:50][CH2:49][C@H:38]1[C:39]([NH:41][CH2:42][C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1)=[O:40])=[O:36])=[O:32])[CH:28]([CH3:30])[CH3:29])=[O:25])[CH:21]([CH3:23])[CH3:22].Cl.C(N(CC)CC)C>CN(C=O)C>[N:1]1([C:9]([O:11][CH2:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)=[O:10])[CH2:8][CH2:7][CH2:6][C@@H:2]1[C:3]([NH:19][C@H:20]([C:24]([N:26]([CH3:55])[C@H:27]([C:31]([N:33]1[CH2:54][CH2:53][CH2:52][C@H:34]1[C:35]([N:37]1[CH2:51][CH2:50][CH2:49][C@H:38]1[C:39]([NH:41][CH2:42][C:43]1[CH:44]=[CH:45][CH:46]=[CH:47][CH:48]=1)=[O:40])=[O:36])=[O:32])[CH:28]([CH3:30])[CH3:29])=[O:25])[CH:21]([CH3:23])[CH3:22])=[O:5]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8471TriethylamineHCID 1112081-benzyl hydrogen (R)-pyrrolidine-1,2-dicarboxylateHCID 10951353H-Val-MeVal-Pro-Pro-NHBn

Product 1

HCID 131722144HCID 131722144, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

3.74 g Z-D-Pro-OH (15 mmol, BACHEM) and 8.25 g H-Val-MeVal-Pro-Pro-NHBn×HCl (15 mmol) were dissolved in 80 ml dry DMF. After cooling to 0° C., 2.4 g DEPCN (2.25 ml, 15 mmol) and 4.2 ml triethylamine (30 mmol) were added. The reaction mixture was stirred at 0° C. for several hours and room temperature overnight, then the DMF was evaporated under reduced pressure. The residue was diluted with ethyl acetate and thoroughly washed with dilute aqueous HCl (pH 2), water, dilute aqueous NaOH (pH 9–10), and water. The organic phase was dried over sodium sulfate and evaporated to dryness to yield 9.2 g of the desired protected pentapeptide.

Workup

  1. customthe DMF was evaporated under reduced pressure
  2. additionThe residue was diluted with ethyl acetate
  3. washthoroughly washed with dilute aqueous HCl (pH 2), water, dilute aqueous NaOH (pH 9–10), and water
  4. dry with materialThe organic phase was dried over sodium sulfate
  5. customevaporated to dryness
  6. customto yield 9.2 g of the

Sources & evidence

ORD record
ord-71d5c1e5a135455fba4054b6175a1d2a
Source dataset
uspto-grants-2006_08
Patent number
US07084110B2

Linked notes

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