Triethylamine → 6-((S)-2-methyl-pyrrolidine-1-carbonyl)-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine-8-carboxylic acid [(R)-1-(5-chloro-6-methoxy-pyridin-3-yl)-propyl]-amide

HRID 926388Notes

Reaction equation

HRID 926388 reaction equation
[CH3:1][C@H:2]1[CH2:6][CH2:5][CH2:4][N:3]1[C:7]([C:9]1[N:17]2[C:12]([CH2:13][O:14][CH2:15][CH2:16]2)=[C:11]([C:18]([OH:20])=O)[CH:10]=1)=[O:8].ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C.Cl.[Cl:44][C:45]1[CH:46]=[C:47]([C@H:53]([NH2:56])[CH2:54][CH3:55])[CH:48]=[N:49][C:50]=1[O:51][CH3:52].C(N(CC)CC)C>CN(C)C=O>[Cl:44][C:45]1[CH:46]=[C:47]([C@H:53]([NH:56][C:18]([C:11]2[CH:10]=[C:9]([C:7]([N:3]3[CH2:4][CH2:5][CH2:6][C@@H:2]3[CH3:1])=[O:8])[N:17]3[CH2:16][CH2:15][O:14][CH2:13][C:12]=23)=[O:20])[CH2:54][CH3:55])[CH:48]=[N:49][C:50]=1[O:51][CH3:52]

Participants

7

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 897267566-((S)-2-methyl-pyrrolidine-1-carbonyl)-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine-8-carboxylic acidHCID 89726932(R)-1-(5-chloro-6-methoxy-pyridin-3-yl)-propylamine hydrochloride

Product 1

HCID 716962606-((S)-2-methyl-pyrrolidine-1-carbonyl)-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine-8-carboxylic acid [(R)-1-(5-chloro-6-methoxy-pyridin-3-yl)-propyl]-amideYield 83%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

To a solution of 6-((S)-2-methyl-pyrrolidine-1-carbonyl)-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine-8-carboxylic acid (Comp. No. 7c) (75 mg, 0.270 mmol) in dimethylformamide (2 ml) was added 1-hydroxybenzotriazole (41 mg, 0.30 mmol) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (58 mg, 0.30 mmol). The mixture was stirred for 2 h at 50° C., then (R)-1-(5-chloro-6-methoxy-pyridin-3-yl)-propylamine hydrochloride (70 mg, 0.3 mmol) and triethylamine (82 mg, 0.81 mmol) were added and the mixture was stirred at 25° C. overnight. The mixture was filtered through a small filter cartridge and the solution was purified by reverse phase HPLC (acetonitrile/water gradient with 0.1% trifluoroacetic acid) to give 103 mg (83%) of 6-((S)-2-methyl-pyrrolidine-1-carbonyl)-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine-8-carboxylic acid [(R)-1-(5-chloro-6-methoxy-pyridin-3-yl)-propyl]-amide as white solid. LC/MS (method 2): Rt=1.24 min; m/z=461.12 (M+H+). 1H-NMR: δ (ppm)=8.08 (2H, m), 7.86 (1H, s), 7.19 (1H, s), 4.97 (1H, d), 4.83-4.89 (2H, m), 3.80-4.30 (8H, m), 3.68 (2H, bs), 2.03-2.10 (1H, m), 1.99-1.92 (1H, m), 1.72-1.84 (3H, m), 1.52-1.59 (1H, m), 1.18-1.19 (3H, d), 0.87 (3H, t).

Workup

  1. stirringthe mixture was stirred at 25° C. overnight
  2. filtrationThe mixture was filtered through a small filter cartridge
  3. customthe solution was purified by reverse phase HPLC (acetonitrile/water gradient with 0.1% trifluoroacetic acid)

Sources & evidence

ORD record
ord-ff429e37e1e84cdd9310bcfbd800b5f2
Source dataset
uspto-grants-2016_03
Patent number
US09284333B2

Reaction notes

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