反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
A solution of methoxylamine-HCl (1.0 equiv.) and tert-butyl (1R,3S,5R)-5-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-3-methyl-2-oxocyclohexylcarbamate (1.0 equiv.) in EtOH/pyridine (1/1, 0.01 M) was capped and left standing at rt for 16 hrs. The volatiles were removed in vacuo and the residue was partitioned between EtOAc and Na2CO3 (sat.). The organic layer was washed with NaCl(sat), dried over MgSO4, filtered, concentrated. The Boc group was removed with 25% TFA/CH2Cl2. After 45 minutes, the volatiles were removed in vacuo and the residue was pumped on for 5 minutes, dissolved in CH2Cl2 and neutralized with TEA. The volatiles were removed in vacuo and after pumping the residue was dissolved in DMSO and purified by RP-HPLC to yield N-(4-((1R,3R,5S,E)-3-amino-4-(methoxyimino)-5-methylcyclohexyl)pyridin-3-yl)-6-(2,6-difluorophenyl)-5-fluoropicolinamide in 16% yield. LC/MS (m/z)=484.2 (MH+), Rt=0.64 min. 1H NMR (400 MHz, DMSO-d6) δ ppm 10.49 (s, 1H), 8.57 (s, 1H), 8.47 (d, J=4.0, 1H), 8.35 (dd, J=8.0, 4.0, 1H), 8.25 (broad doublet, J=4.0, 2H), 8.20 (t, J=8.0, 1H), 7.67-7.74 (m, 1H), 7.42 (d, J=8.0, 1H), 7.36 (t, J=8.0, 2H), 4.04-4.08 (m, 1H), 3.79 (s, 3H), 3.23-3.29 (m, 1H), 2.39-2.45 (m, 1H), 2.11 (d, J=8.0, 1H), 2.10 (d, J=8.0, 1H), 1.90 (q, J=12, 1H), 1.40 (q, J=12, 1H), 1.01 (d, J=4.0, 3H); and N-(4-((1R,3R,5S,Z)-3-amino-4-(methoxyimino)-5-methylcyclohexyl)pyridin-3-yl)-6-(2,6-difluorophenyl)-5-fluoropicolinamide in 27% yield. LC/MS (m/z)=484.2 (MH+), Rt=0.66 min. 1H NMR (400 MHz, DMSO-d6) δ ppm 10.48 (s, 1H), 8.57 (s, 1H), 8.47 (d, J=4.0, 1H), 8.35 (dd, J=8.0, 4.0, 1H), 8.20 (t, J=8.0, 1H), 8.08 (broad singlet, 2H), 7.67-7.74 (m, 1H), 7.42 (d, J=8.0, 1H), 7.36 (t, J=8.0, 2H), 3.88-3.92 (m, 1H), 3.80 (s, 3H), 3.22-3.28 (m, 1H), 2.51-2.58 (m, 1H), 2.25 (d, J=12.0, 1H), 1.86 (d, J=12.0, 1H), 1.70 (q, J=12, 1H), 1.62 (q, J=12, 1H), 1.34 (d, J=4.0, 3H).
WORKUP
后处理
- waitleft
- customThe volatiles were removed in vacuo
- customthe residue was partitioned between EtOAc and Na2CO3 (sat.)
- washThe organic layer was washed with NaCl(sat)
- dry with materialdried over MgSO4
- filtrationfiltered
- concentrationconcentrated
- customThe Boc group was removed with 25% TFA/CH2Cl2
- waitAfter 45 minutes
- customthe volatiles were removed in vacuo
- customwas pumped on for 5 minutes
- dissolutiondissolved in CH2Cl2 and neutralized with TEA
- customThe volatiles were removed in vacuo
- dissolutionwas dissolved in DMSO
- custompurified by RP-HPLC