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
To a solution of (2R,6S,13aS,14aR,16aS,Z)-ethyl 2-(biphenyl-4-yl)-6-(tert-butoxycarbonylamino)-2-(butylthio)-5,16-dioxo-1,2,3,5,6,7,8,9,10,11,13a,14,14a,15,16,16a-hexadecahydrocyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecine-14a-carboxylate (59 mg, 0.082 mmol) in THF (1 mL) and MeOH (1.000 mL) was added pre-made solution of Lithium hydroxide monohydrate (6.90 mg, 0.164 mmol) in water (1 mL). The resulting cloudy solution was stirred at room for 5 h. LC/MS analysis showed partial reaction. Another portion of Lithium hydroxide monohydrate (6.90 mg, 0.164 mmol) in water (0.2 ml) was added and stirred for additional 17 hours. LC/MS analysis showed there was still small portion of starting material remained. Another portion of Lithium hydroxide monohydrate (6.90 mg, 0.164 mmol) in water (0.2 ml) was added and stirred for additional 5 hours. Quenched with 5% citric acid, extracted with ethyl acetate. The organic layer was washed with brine, dried over MgSO4, filtered, and concentrated to afford the desired product (2R,6S,13aS,14aR,16aS,Z)-2-(biphenyl-4-yl)-6-(tert-butoxycarbonylamino)-2-(butylthio)-5,16-dioxo-1,2,3,5,6,7,8,9,10,11,13a,14,14a,15,16,16a-hexadecahydrocyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecine-14a-carboxylic acid (57 mg, 0.074 mmol, 90% yield) as a white foam. 1H NMR (500 MHz, MeOD) δ ppm 0.84 (t, J=7.32 Hz, 3 H) 1.14-1.37 (m, 5 H) 1.38-1.54 (m, 16 H) 1.53-1.68 (m, 4 H) 1.82-1.95 (m, 1 H) 1.96-2.12 (m, 1 H) 2.21-2.38 (m, 2 H) 2.42 (dt, J=12.21, 7.17 Hz, 1 H) 2.48-2.63 (m, 1 H) 2.84-3.00 (m, 1 H) 3.92-4.18 (m, 2 H) 4.49 (dd, J=10.38, 2.75 Hz, 1 H) 5.18 (d, J=10.68 Hz, 1 H) 5.35 (t, J=9.77 Hz, 1 H) 5.56-5.68 (m, 1 H) 7.30-7.39 (m, 1 H) 7.45 (t, J=7.63 Hz, 2 H) 7.55-7.63 (m, 4 H) 7.77 (d, J=8.24 Hz, 2 H). LC-MS (retention time: 3.34 min, method C), MS m/z 690(M+H).
WORKUP
后处理
- customreaction
- stirringstirred for additional 17 hours
- stirringstirred for additional 5 hours
- customQuenched with 5% citric acid
- extractionextracted with ethyl acetate
- washThe organic layer was washed with brine
- dry with materialdried over MgSO4
- filtrationfiltered
- concentrationconcentrated