Fmoc-Gly-OH → (E)-2(R)-[1(S)-(tert-butoxycarbonyl)-4-phenyl-3-butenyl]-2'-[N-(9-fluorenylmethyloxycarbonyl)-glycinyl]-4-methylvalerohydrazide

HRID 651778Notes

Reaction equation

HRID 651778 reaction equation
[C:1]([O:5][C:6]([C@H:8]([C@@H:18]([CH2:23][CH:24]([CH3:26])[CH3:25])[C:19]([NH:21][NH2:22])=[O:20])[CH2:9]/[CH:10]=[CH:11]/[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH:27]1[C:39]2[CH:38]([CH2:40][O:41][C:42]([NH:44][CH2:45][C:46](O)=[O:47])=[O:43])[C:37]3[C:32](=[CH:33][CH:34]=[CH:35][CH:36]=3)[C:31]=2[CH:30]=[CH:29][CH:28]=1.Cl.C(N=C=NCCCN(C)C)C>CN(C)C=O>[C:1]([O:5][C:6]([C@H:8]([C@@H:18]([CH2:23][CH:24]([CH3:26])[CH3:25])[C:19]([NH:21][NH:22][C:46](=[O:47])[CH2:45][NH:44][C:42]([O:41][CH2:40][CH:38]1[C:37]2[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=2[C:31]2[C:39]1=[CH:27][CH:28]=[CH:29][CH:30]=2)=[O:43])=[O:20])[CH2:9]/[CH:10]=[CH:11]/[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 93124Fmoc-Gly-OHHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 69709501(E)-2(R)-[1(S)-(tert-butoxycarbonyl)-4-phenyl-3-butenyl]-4-methylvalerohydrazide

Product 1

HCID 86757289(E)-2(R)-[1(S)-(tert-butoxycarbonyl)-4-phenyl-3-butenyl]-2'-[N-(9-fluorenylmethyloxycarbonyl)-glycinyl]-4-methylvalerohydrazideYield 86.8%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 1.0 g of (E)-2(R)-[1(S)-(tert-butoxycarbonyl)-4-phenyl-3-butenyl]-4-methylvalerohydrazide in 10 ml of dimethylformamide was treated with 1.24 g of N-(9-fluorenylmethyloxycarbonyl)-glycine and 0.80 g of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride. The mixture was stirred overnight at room temperature and evaporated. The residue was dissolved in ethyl acetate and washed with 2M aqueous hydrogen chloride, 5% aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride. Drying over anhydrous magnesium sulphate followed by evaporation and trituration with diethyl ether gave 1.54 g of (E)-2(R)-[1(S)-(tert-butoxycarbonyl)-4-phenyl-3-butenyl]-2′-[N-(9-fluorenylmethyloxycarbonyl)-glycinyl]-4-methylvalerohydrazide in the form of a white solid.

Workup

  1. customevaporated
  2. dissolutionThe residue was dissolved in ethyl acetate
  3. washwashed with 2M aqueous hydrogen chloride, 5% aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride
  4. dry with materialDrying over anhydrous magnesium sulphate
  5. customfollowed by evaporation and trituration with diethyl ether

Sources & evidence

ORD record
ord-3086874a427944d0ae4988e6328897ec
Source dataset
uspto-grants-2001_08
Patent number
US06281363B1

Reaction notes

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