Trifluoroacetic acid → ((3S,4R)-3-amino-4-hydroxypiperidin-1-yl)(2-(1-(cyclopropylmethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazol-5-yl)methanone

HRID 2275051Notes

Reaction equation

HRID 2275051 reaction equation
C(OC(=O)[NH:7][C@@H:8]1[C@H:13]([OH:14])[CH2:12][CH2:11][N:10]([C:15]([C:17]2[CH:39]=[CH:38][C:20]3[N:21]([CH3:37])[C:22]([C:24]4[N:32]([CH2:33][CH:34]5[CH2:36][CH2:35]5)[C:27]5=[N:28][CH:29]=[CH:30][CH:31]=[C:26]5[CH:25]=4)=[N:23][C:19]=3[CH:18]=2)=[O:16])[CH2:9]1)(C)(C)C.C(O)(C(F)(F)F)=O>ClCCl.CO>[NH2:7][C@@H:8]1[C@H:13]([OH:14])[CH2:12][CH2:11][N:10]([C:15]([C:17]2[CH:39]=[CH:38][C:20]3[N:21]([CH3:37])[C:22]([C:24]4[N:32]([CH2:33][CH:34]5[CH2:36][CH2:35]5)[C:27]5=[N:28][CH:29]=[CH:30][CH:31]=[C:26]5[CH:25]=4)=[N:23][C:19]=3[CH:18]=2)=[O:16])[CH2:9]1

Participants

5

Reactant 2

HCID 6422Trifluoroacetic acidHCID 118178629tert-butyl((3S,4R)-1-(2-(1-(cyclopropylmethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazole-5-carbonyl)-4-hydroxypiperidin-3-yl)carbamate

Product 1

HCID 73053086((3S,4R)-3-amino-4-hydroxypiperidin-1-yl)(2-(1-(cyclopropylmethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazol-5-yl)methanoneYield 100%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

To a flask containing tert-butyl((3S,4R)-1-(2-(1-(cyclopropylmethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazole-5-carbonyl)-4-hydroxypiperidin-3-yl)carbamate (37 mg, 0.068 mmol) in dichloromethane (DCM) (1 mL) was added TFA (0.199 mL, 2.58 mmol) and the reaction was stirred for 1 h. The reaction mixture was concentrated in vacuo to afford a brown oil. This was dissolved in methanol and loaded onto an SCX cartridge (5 g). It was eluted with methanol (3 column volumes) and product eluted as free base with 2M ammonia in methanol. The filtrate from the ammonia fractions was concentrated in vacuo to yield a yellow oil—((3S,4R)-3-amino-4-hydroxypiperidin-1-yl)(2-(1-(cyclopropylmethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazol-5-yl)methanone (32 mg, 0.068 mmol, 100% yield). This was dissolved in dichloromethane (DCM) (1 mL) in a vial and HCl (2 M in Et2O) (0.034 mL, 0.068 mmol) was added. The resultant suspension was sonicated for 5 min and allowed to stand for 15 min. The solvent was then removed under a positive pressure of nitrogen and the product dried in vacuo to afford ((3S,4R)-3-amino-4-hydroxypiperidin-1-yl)(2-(1-(cyclopropylmethyl)-1H-pyrrolo[2,3-b]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazol-5-yl)methanone, hydrochloride (32 mg, 0.067 mmol, 98% yield) as a white solid.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customto afford a brown oil
  3. washIt was eluted with methanol (3 column volumes) and product
  4. washeluted as free base with 2M ammonia in methanol
  5. concentrationThe filtrate from the ammonia fractions was concentrated in vacuo

Sources & evidence

ORD record
ord-903981d1bc9b4569916ef8746b4787df
Source dataset
uspto-grants-2015_09
Patent number
US09127003B2

Reaction notes

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