Boc-Gly-Val-Gly-Ile-Pro-OBzl → Boc-Gly-Val-Gly-Ile-Pro-OH

HRID 1199232Notes

Reaction equation

HRID 1199232 reaction equation
[NH:1]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:2][C:3]([NH:5][C@H:6]([C:10]([NH:12][CH2:13][C:14]([NH:16][C@H:17]([C:22]([N:24]1[CH2:38][CH2:37][CH2:36][C@H:25]1[C:26]([O:28]CC1C=CC=CC=1)=[O:27])=[O:23])[C@H:18]([CH2:20][CH3:21])[CH3:19])=[O:15])=[O:11])[CH:7]([CH3:9])[CH3:8])=[O:4]>C(O)(=O)C.[Pd]>[NH:1]([C:39]([O:41][C:42]([CH3:45])([CH3:43])[CH3:44])=[O:40])[CH2:2][C:3]([NH:5][C@H:6]([C:10]([NH:12][CH2:13][C:14]([NH:16][C@H:17]([C:22]([N:24]1[CH2:38][CH2:37][CH2:36][C@H:25]1[C:26]([OH:28])=[O:27])=[O:23])[C@H:18]([CH2:20][CH3:21])[CH3:19])=[O:15])=[O:11])[CH:7]([CH3:9])[CH3:8])=[O:4]

Participants

4

Reactant 1

HCID 131715771Boc-Gly-Val-Gly-Ile-Pro-OBzl

Product 1

HCID 131716314Boc-Gly-Val-Gly-Ile-Pro-OHYield 97.6%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 176Acetic AcidSolvent

Procedure

III (7.8 g, 0.0123 mole) was taken in acetic acid (80 ml) and hydrogenated in the presence of 10% Pd-C. (1 g) at 40 psi. After filtering the catalyst with the aid of celite, the solvent was removed under reduced pressure, triturated with ether, filtered, washed with ether then pet. ether and dried to obtain 6.5 g of the product (yield: 97.3%), m.p. shrinks at 127° C. and decomp. at 3 145° C. Rf3, 0.24; Rf4, 0.11 Anal. Calcd. for C25H43N5O10.1/2H2O: C 54.52, H 8.05, N 12.71%. Found: C 54.32, H 8.02, N 12.59%.

Workup

  1. filtrationAfter filtering the catalyst with the aid of celite
  2. customthe solvent was removed under reduced pressure
  3. customtriturated with ether
  4. filtrationfiltered
  5. washwashed with ether
  6. dry with materialpet. ether and dried

Sources & evidence

ORD record
ord-2adaf64e1ebf467ba5796a8ef0f595a6
Source dataset
uspto-grants-1990_02
Patent number
US04898926

Reaction notes

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