Pyridine → Methyl 7-[(cyclopentyl{4-[(5-oxo-2-phenyl-5,6-dihydro-4H-1,3,4-oxadiazin-4-yl)methyl]phenyl}-acetyl)amino]heptanoate

HRID 238189Notes

Reaction equation

HRID 238189 reaction equation
[CH:1]1([CH:6]([C:10]2[CH:15]=[CH:14][C:13]([CH2:16][N:17]3[C:22](=[O:23])[CH2:21][O:20][C:19]([C:24]4[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=4)=[N:18]3)=[CH:12][CH:11]=2)[C:7](O)=[O:8])[CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.[NH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][C:38]([O:40][CH3:41])=[O:39].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.N1C=CC=CC=1>CN(C=O)C>[CH:1]1([CH:6]([C:10]2[CH:15]=[CH:14][C:13]([CH2:16][N:17]3[C:22](=[O:23])[CH2:21][O:20][C:19]([C:24]4[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=4)=[N:18]3)=[CH:12][CH:11]=2)[C:7]([NH:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][C:38]([O:40][CH3:41])=[O:39])=[O:8])[CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 1049PyridineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 13807349Methyl 7-aminoheptanoate hydrochlorideHCID 58074507cyclopentyl{4-[(5-oxo-2-phenyl-5,6-dihydro-4H-1,3,4-oxadiazin-4-yl)methyl]phenyl}acetic acid

Product 1

HCID 58074547Methyl 7-[(cyclopentyl{4-[(5-oxo-2-phenyl-5,6-dihydro-4H-1,3,4-oxadiazin-4-yl)methyl]phenyl}-acetyl)amino]heptanoate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 72 mg (0.18 mmol) of cyclopentyl{4-[(5-oxo-2-phenyl-5,6-dihydro-4H-1,3,4-oxa-diazin-4-yl)methyl]phenyl}acetic acid (enantiomer 2), 30 mg (0.15 mmol) of methyl 7-amino-heptanoate hydrochloride, 87 mg (0.23 mmol) of HATU and 0.8 ml of pyridine in 3.2 ml of DMF was stirred at room temperature overnight. After the reaction had ended, the mixture was poured into ice-water, the phases were separated and the aqueous phase was extracted three times with tert-butyl methyl ether. The combined organic phases were dried over sodium sulfate, and, after filtration, the solvent was removed to dryness under reduced pressure. The crude product obtained was purified by preparative RP-HPLC. This gave 13 mg (0.02 mmol, 13% of theory) of the title compound as a colorless oil.

Workup

  1. customthe phases were separated
  2. extractionthe aqueous phase was extracted three times with tert-butyl methyl ether
  3. dry with materialThe combined organic phases were dried over sodium sulfate
  4. filtrationafter filtration
  5. customthe solvent was removed to dryness under reduced pressure

Sources & evidence

ORD record
ord-2197c95fe1ce490d87584b7183cf1dab
Source dataset
uspto-grants-2014_02
Patent number
US08642592B2

Reaction notes

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