反应详情

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.

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