Triethylamine → HCID 178516175, compound

HRID 1606823Notes

Reaction equation

HRID 1606823 reaction equation
[CH2:1]([O:8][C:9](=[O:27])[C@H:10]([CH2:12][C:13]1[CH:18]=[CH:17][C:16]([O:19][CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:15][CH:14]=1)[NH2:11])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[NH:28]1[C:32](=[O:33])[CH2:31][CH2:30][C@H:29]1[C:34]([NH:36][C@H:37]([C:44]([NH:46][C@H:47]([C:58]([NH:60][C@H:61]([C:64](O)=[O:65])[CH2:62][OH:63])=[O:59])[CH2:48][C:49]1[C:57]2[C:52](=[CH:53][CH:54]=[CH:55][CH:56]=2)[NH:51][CH:50]=1)=[O:45])[CH2:38][C:39]1[N:43]=[CH:42][NH:41][CH:40]=1)=[O:35].C(N(CC)CC)C.C1(N=C=NC2CCCCC2)CCCCC1>CN(C)C=O>[CH2:1]([O:8][C:9](=[O:27])[C@H:10]([CH2:12][C:13]1[CH:18]=[CH:17][C:16]([O:19][CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:15][CH:14]=1)[NH:11][C:62](=[O:63])[C@H:61]([CH2:64][OH:65])[NH:60][C:58](=[O:59])[C@H:47]([CH2:48][C:49]1[C:57]2[C:52](=[CH:53][CH:54]=[CH:55][CH:56]=2)[NH:51][CH:50]=1)[NH:46][C:44](=[O:45])[C@H:37]([CH2:38][C:39]1[N:43]=[CH:42][NH:41][CH:40]=1)[NH:36][C:34](=[O:35])[C@@H:29]1[CH2:30][CH2:31][C:32](=[O:33])[NH:28]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 10868DicyclohexylcarbodiimideHCID 7408223(S)-Benzyl 2-amino-3-(4-(benzyloxy)phenyl)propanoateHCID 178516176HCID 178516176, compound

Product 1

HCID 178516175HCID 178516175, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

O-Benzyl-L-tyrosine benzyl ester (VIII) hydrochloride (0.397 g) and L-pyroglutamyl-L-histidyl-L-tryptophyl-L-serine (VII) (0.539 g) in dry dimethylformamide (50 ml) is treated with triethylamine (0.14 ml) and dicyclohexylcarbodiimide (0.227 g) in dry dimethylformamdie (5 ml) at 0° C. After stirring at room temperature for 24 hours, the reaction mixture is evaporated to dryness. The residue is triturated in methanol and the dicyclohexylurea is removed by filtration. The filtrate is concentrated to L-pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-O-benzyl-L-tyrosine benzyl ester (IX).

Workup

  1. customthe reaction mixture is evaporated to dryness
  2. customThe residue is triturated in methanol
  3. customthe dicyclohexylurea is removed by filtration
  4. concentrationThe filtrate is concentrated to L-pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-O-benzyl-L-tyrosine benzyl ester (IX)

Sources & evidence

ORD record
ord-f6dcd921fdad48aaa24898bdb968449f
Source dataset
uspto-grants-1976_04
Patent number
US03953416

Reaction notes

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