Pyridine → 1,2-dimethyl-D-prolyl-N-[(3R,4S,5S)-3-methoxy-5-methyl-1-oxo-1-(pentafluorophenoxy)heptan-4-yl]-N-methyl-L-valinamide

HRID 74810Notes

Reaction equation

HRID 74810 reaction equation
[CH3:1][N:2]1[CH2:29][CH2:28][CH2:27][C@:3]1([CH3:30])[C:4]([NH:6][C@H:7]([C:11]([N:13]([C@@H:15]([C@@H:23]([CH3:26])[CH2:24][CH3:25])[C@H:16]([O:21][CH3:22])[CH2:17][C:18]([OH:20])=[O:19])[CH3:14])=[O:12])[CH:8]([CH3:10])[CH3:9])=[O:5].N1C=CC=CC=1.FC(F)(F)C(O[C:42]1[C:47]([F:48])=[C:46]([F:49])[C:45]([F:50])=[C:44]([F:51])[C:43]=1[F:52])=O>ClCCl>[CH3:1][N:2]1[CH2:29][CH2:28][CH2:27][C@:3]1([CH3:30])[C:4]([NH:6][C@H:7]([C:11]([N:13]([C@@H:15]([C@@H:23]([CH3:26])[CH2:24][CH3:25])[C@H:16]([O:21][CH3:22])[CH2:17][C:18](=[O:20])[O:19][C:42]1[C:43]([F:52])=[C:44]([F:51])[C:45]([F:50])=[C:46]([F:49])[C:47]=1[F:48])[CH3:14])=[O:12])[CH:8]([CH3:10])[CH3:9])=[O:5]

Participants

5

Reactant 3

HCID 1049PyridineHCID 4327891Pentafluorophenyl TrifluoroacetateHCID 86685764HCID 86685764, compound

Product 1

HCID 866857651,2-dimethyl-D-prolyl-N-[(3R,4S,5S)-3-methoxy-5-methyl-1-oxo-1-(pentafluorophenoxy)heptan-4-yl]-N-methyl-L-valinamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a cooled solution (0° C.) of #196 (4.0 g, 9.4 mmol, 1 eq.) in dichloromethane (40 mL) was added dropwise pyridine (2.95 g, 37.6 mmol, 4 eq.) followed by a solution of pentafluorophenyl trifluoroacetate (3.9 g, 13.6 mmol, 1.4 eq.) in dichloromethane (5 mL). The mixture was stirred at room temperature for one hour, and the solvent was concentrated in vacuo. The residue was purified by silica gel chromatography (Gradient: 1 to 10% methanol in dichloromethane) to afford compound #197 (4.5 g, 81.2% (over three steps) as white solid.

Workup

  1. concentrationthe solvent was concentrated in vacuo
  2. customThe residue was purified by silica gel chromatography (Gradient: 1 to 10% methanol in dichloromethane)

Sources & evidence

ORD record
ord-386af70e2461402bb8031c0b88eb8db9
Source dataset
uspto-grants-2014_09
Patent number
US08828401B2

Reaction notes

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