化学合成。
医药
合成路线 1(1. 合成:114676-59-4)
产率:100%
合成条件:With thionyl chloride In methanol at 0 - 23℃; for 16.02 h;
实验步骤:在[0℃]向搅拌的[OF 4R-HYDROXYPLYRRIDIDINE-2R-CARBOXYLIC]酸(10.0g,76.3mmol,[1] eq。)在[MEOH](300mL)中的溶液中加入SOC12(10.0mL,过量) )在1.5分钟的过程中。 将反应温热至[23℃] .16小时后,将反应混合物真空浓缩,得到4R-羟基吡咯烷-2R-羧酸甲酯盐酸盐,为白色固体(15.9g,100%收率)
参考文献:
- [1] Patent: WO2004/7444, 2004, A2. Location in patent: Page 135 [2] Journal of the American Chemical Society, 1996, vol. 118, # 29, p. 6826 - 6840 [3] Patent: WO2011/29046, 2011, A1. Location in patent: Page/Page column 153; 154 [4] Journal of Medicinal Chemistry, 1988, vol. 31, # 8, p. 1598 - 1611 [5] Journal of Medicinal Chemistry, 1999, vol. 42, # 26, p. 5426 - 5436 [6] Bioorganic and Medicinal Chemistry, 2002, vol. 10, # 5, p. 1399 - 1415 [7] Journal of Organic Chemistry, 2000, vol. 65, # 5, p. 1590 - 1596 [8] Organic letters, 1999, vol. 1, # 10, p. 1513 - 1516 [9] Chemistry - A European Journal, 2010, vol. 16, # 35, p. 10691 - 10706 [10] Organic Letters, 2011, vol. 13, # 16, p. 4442 - 4445 [11] Patent: WO2011/130383, 2011, A1. Location in patent: Page/Page column 104 [12] Chemistry - A European Journal, 2014, vol. 20, # 13, p. 3813 - 3824 [13] Chemical and Pharmaceutical Bulletin, 2016, vol. 64, # 8, p. 1242 - 1247
合成路线 2(2. 合成:114676-59-4)
产率:100%
合成条件:With thionyl chloride In methanol at 10 - 65℃; for 2 h;
实验步骤:在10℃下,向(2R,4R)-4-羟基吡咯烷-2-羧酸(100g,0.763mol)的MeOH(1L)悬浮液中缓慢加入SOd 2(115g,0.966mcl)。 然后将反应在65℃下加热2小时。 将混合物在高真空下浓缩。 将残余物用乙醚洗涤,过滤,得到标题化合物0350(138g,100%收率),为黄色固体.LCMS:146 [M + H]。 tR = 0.366分钟。 (LCMS条件3)
参考文献:
- [1] Patent: WO2015/113452, 2015, A1. Location in patent: Page/Page column 186; 187 [2] Patent: US5317016, 1994, A
合成路线 3(3. 合成:114676-59-4)
产率:100%
合成条件:at 0 - 75℃; for 4.50 h;
实验步骤:在室温下将顺式-4-羟基-D-脯氨酸盐酸盐3A(12.8g,76.38mmol)溶于无水甲醇(120mL)中,冷却至0,二氯亚砜(10.27g,86.31mmol),加热至75℃。 回流4.5小时,在室温下反应过夜。真空除去溶剂,得到白色固体3B(13.83g,收率100%)。
参考文献:
- [1] Patent: TW2017/8221, 2017, A. Location in patent: Page/Page column 41 [2] Journal of Organic Chemistry, 2009, vol. 74, # 2, p. 513 - 519 [3] Patent: US2009/163472, 2009, A1. Location in patent: Page/Page column 21 [4] Patent: WO2014/32, 2014, A1. Location in patent: Page/Page column 64 [5] Bioorganic and Medicinal Chemistry Letters, 2016, vol. 26, # 10, p. 2434 - 2437