Methanesulfonyl chloride → (1R,2R,4R,6S)-2-amino-4-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-6-methylcyclohexyl methanesulfonate

HRID 705253Notes

Reaction equation

HRID 705253 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]1[N:14]=[C:13]([C:15]([NH:17][C:18]2[CH:19]=[N:20][CH:21]=[CH:22][C:23]=2[C@H:24]2[CH2:29][C@@H:28]([NH:30]C(=O)OC(C)(C)C)[C@H:27]([OH:38])[C@@H:26]([CH3:39])[CH2:25]2)=[O:16])[CH:12]=[CH:11][C:10]=1[F:40].[CH3:41][S:42](Cl)(=[O:44])=[O:43]>C(Cl)Cl>[CH3:41][S:42]([O:38][C@@H:27]1[C@@H:26]([CH3:39])[CH2:25][C@@H:24]([C:23]2[CH:22]=[CH:21][N:20]=[CH:19][C:18]=2[NH:17][C:15](=[O:16])[C:13]2[CH:12]=[CH:11][C:10]([F:40])=[C:9]([C:3]3[C:2]([F:1])=[CH:7][CH:6]=[CH:5][C:4]=3[F:8])[N:14]=2)[CH2:29][C@H:28]1[NH2:30])(=[O:44])=[O:43]

Participants

4

Reactant 2

HCID 31297Methanesulfonyl chlorideHCID 86639738tert-butyl (1R,2R,3S,5R)-5-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-2-hydroxy-3-methylcyclohexylcarbamate

Product 1

HCID 72551165(1R,2R,4R,6S)-2-amino-4-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-6-methylcyclohexyl methanesulfonateYield 31%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of tert-butyl (1R,2R,3S,5R)-5-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-2-hydroxy-3-methylcyclohexylcarbamate (1.0 equiv.) in CH2Cl2 was added TEA (4.0 equiv.) and MsCl (2.0 equiv.). The capped solution was stirred for 5 minutes and then the homogeneous solution was left standing at rt for 16 hrs. The volatiles were removed in vacuo, the residue was dissolved in DMSO, purified by RP HPLC and the product fractions were lyophilized directly. The Boc protected product was treated with 25% TFA/CH2Cl2 for 20 minutes at which time the volatiles were removed in vacuo and the residue was dissolved in DMSO and purified by RP-HPLC. The product fractions were lyophilized directly to yield (1R,2R,4R,6S)-2-amino-4-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-6-methylcyclohexyl methanesulfonate in 31% yield. LC/MS (m/z)=535.2 (MH+), Rt=0.61 min.

Workup

  1. waitthe homogeneous solution was left
  2. waitstanding at rt for 16 hrs
  3. customThe volatiles were removed in vacuo
  4. dissolutionthe residue was dissolved in DMSO
  5. custompurified by RP HPLC
  6. additionThe Boc protected product was treated with 25% TFA/CH2Cl2 for 20 minutes at which time the volatiles
  7. customwere removed in vacuo
  8. dissolutionthe residue was dissolved in DMSO
  9. custompurified by RP-HPLC

Sources & evidence

ORD record
ord-433b3dee20154fb9aca1fd66282e2fe3
Source dataset
uspto-grants-2015_11
Patent number
US09173883B2

Reaction notes

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