N-BOC-6-羟基-3,4-二氢异喹啉是一种医药中间体,有文献报道其可用于制备SMO拮抗剂。
医药
路线1:
- 步骤:将24(1.54g,6.4mmol)悬浮于水中,滴加NEt₃(1.42mg,14.0mmol)和二叔丁基二碳酸酯(1.67mg,7.6mmol)的THF溶液;搅拌过夜后浓缩溶液,残余物溶于EtOAc,用水洗涤,Na₂SO₄干燥,真空蒸发溶剂,快速柱色谱(EtOAc:己烷=1:5)纯化得25(1.58g,99%)。
- 条件:With triethylamine In tetrahydrofuran; water at 20℃
- 产率:99%
- 参考文献:[1] Bioorganic and Medicinal Chemistry, 2016, vol.24, #4, p.789-801;[2] Journal of Medicinal Chemistry, 2005, vol.48, #10, p.3586-3604;[3] Patent: WO2010/127212, 2010, A1(Page/Page column 31);[4] Journal of Medicinal Chemistry, 2013, vol.56, #8, p.3414-3418;[5] Synthetic Communications, 1995, vol.25, #20, p.3255-3261;[6] Patent: US5936089, 1999, A;[7] Patent: US5403846, 1995, A;[8] Patent: US5726185, 1998, A;[9] Patent: WO2008/97428, 2008, A2(Page/Page column 133);[10] Patent: US2010/222345, 2010, A1(Page/Page column 85);[11] Journal of Medicinal Chemistry, 2014, vol.57, #6, p.2462-2471;[12] Patent: WO2016/1878, 2016, A1(Page/Page column 49);[13] Patent: WO2017/205193, 2017, A1(Page/Page column 95)
路线2:
- 步骤:6-羟基-1,2,3,4-四氢异喹啉盐酸盐(7.87g)溶于甲醇(100ml),加入三乙胺(4.67ml)和二碳酸二叔丁酯(13.95g);室温搅拌3小时,减压浓缩,加入乙酸乙酯,1N盐酸洗涤,无水硫酸钠干燥,减压蒸馏溶剂,硅胶柱色谱(己烷:乙酸乙酯=10:1~3:1)纯化得标题化合物(9.96g,94%)。
- 条件:With triethylamine In methanol; ethyl acetate
- 产率:94%
- 参考文献:[1] Journal of Medicinal Chemistry, 2004, vol.47, #21, p.5167-5182;[2] Patent: US6525042, 2003, B1;[3] Patent: WO2011/17561, 2011, A1(Page/Page column 147-148);[4] Patent: WO2015/34820, 2015, A1(Page/Page column 44)
路线3:
- 步骤:6-羟基-1,2,3,4-四氢异喹啉氢溴酸盐(1.2g,5.2mmol)和三乙胺(0.8ml,5.7mmol)的二氯甲烷(40ml)溶液中加入二碳酸二叔丁酯(1.2g,5.5mmol)的二氯甲烷(10ml)溶液;搅拌2小时,用柠檬酸(2×50ml)、盐水(2×50ml)洗涤,硫酸镁干燥,减压蒸发,得标题化合物(1.3g,100%)。
- 条件:With triethylamine; citric acid In dichloromethane
- 产率:100%
- 参考文献:[1] Patent: US5700809, 1997, A;[2] Patent: WO2007/146122, 2007, A2(Page/Page column 42);[3] Patent: WO2007/106349, 2007, A2(Page/Page column 64)