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
CONDITIONS
反应条件
- 温度
- 60 °C
PROCEDURE
实验过程
(2R,6S,13aS,14aR,16aS,Z)-6-(tert-butoxycarbonylamino)-2-(4-fluoroisoindoline-2-carbonyloxy)-5,16-dioxo-2,3,5,6,7,8,10,11,13a,14,14a,15,16,16a-tetradecahydro-1H-cyclopropa(j)pyrrolo[1,2-f][1,6,9]oxadiazacyclopentadecine-14a-carboxylic acid (0.072 g, 0.11 mmol) in toluene (3 mL) was added di(1H-imidazol-1-yl)methanone (0.024 g, 0.15 mmol) in rt. The reaction was stirred at 60° C. for 3 hrs. Cyclopropanesulfonamide (0.021 g, 0.17 mmol) was added, followed by addition of DBU (0.043 ml, 0.29 mmol). The reaction was then stirred at rt for 17 hrs. Water (5 mL) was added and acidified with saturated potassium hydrogen sulfate until pH=2˜3. The mixture was extracted with ethyl acetate (20 mL), washed with brine and dried over sodium sulfate. After removal of solvent, the residue was purified by chromatography (Ethyl acetate) to (2R,6S,13aS,14aR,16aS,Z)-6-(tert-butoxycarbonylamino)-14a-(cyclopropylsulfonylcarbamoyl)-5,16-dioxo-2,3,5,6,7,8,10,11,13a,14,14a,15,16,16a-tetradecahydro-1H-cyclopropa(i)pyrrolo[1,2-f][1,6,9]oxadiazacyclopentadecin-2-yl 4-fluoroisoindoline-2-carboxylate as white solid (0.057 g, 68%). MS: Calcd.: 733; Found: [M+H]+ 734. 1H NMR (400 MHz, d6-DMSO) δ11.08 (s, 1H), 9.03 (d, J=10.8 Hz, 1H), 7.34 (m, 1H), 7.11-7.33 (m, 3H), 5.46 (m, 1H), 5.30 (s, 1H), 5.23 (m, 1H), 4.67 (s, 4H), 4.42 (m, 1H), 4.28 (m, 1H), 3.95 (m, 1H), 3.69 (m, 1H), 3.56 (m, 1H), 3.41 (m, 1H), 3.32 (m, 1H), 3.26 (m, 1H), 2.91 (m, 1H), 2.18-2.40 (m, 5H), 1.92 (m, 1H), 1.75 (m, 1H), 1.61 (m, 2H), 1.00-1.28 (m, 13H).
WORKUP
后处理
- stirringThe reaction was then stirred at rt for 17 hrs
- extractionThe mixture was extracted with ethyl acetate (20 mL)
- washwashed with brine
- dry with materialdried over sodium sulfate
- customAfter removal of solvent
- customthe residue was purified by chromatography (Ethyl acetate) to (2R,6S,13aS,14aR,16aS,Z)-6-(tert-butoxycarbonylamino)-14a-(cyclopropylsulfonylcarbamoyl)-5,16-dioxo-2,3,5,6,7,8,10,11,13a,14,14a,15,16,16a-tetradecahydro-1H-cyclopropa(i)pyrrolo[1,2-f][1,6,9]oxadiazacyclopentadecin-2-yl 4-fluoroisoindoline-2-carboxylate as white solid (0.057 g, 68%)