作为多种手性医药中间体,用于制备康帕丁和洛伐他汀的内酯片段;用于制备顺-1,3-多元醇、二脱氧核苷和螺缩醛氰醇的手性子
医药
合成路线 1(1. 合成:14618-80-5)
- 产率:44%
- 合成条件:以氢化钠为试剂,四氢呋喃为溶剂,惰性气氛下回流反应19小时
- 实验步骤:在氩气氛下,向NaH(179mg,4.10mmol,55%油溶液)在THF(2mL)中的悬浮液中依次加入(S)-缩水甘油(S1,200mg,2.70mmol)在THF中的溶液(0℃下,使用4mL)和苄基溴(0.340mL,2.86mmol);将混合物在回流下搅拌19小时后,用0.1M磷酸盐缓冲液(pH6.5)淬灭反应;产物用AcOEt(x3)萃取,合并的有机层用盐水洗涤,然后用Na₂SO₄干燥;真空蒸发后,残留物经硅胶快速柱色谱纯化(己烷/AcOEt=10/1),得到(R)-苄氧甲基环氧乙烷,为无色油状物(196mg,44%)
- 表征数据:1H NMR(300MHz,CDCl₃)d=2.62(dd,J1=2.5Hz,J2=5.0Hz,1H),2.80(dd,J1=3.0Hz,J2=5.0Hz 1H),3.19(dddd,J1=2.5Hz,J2=J3=3.0Hz,J4=5.5Hz,1H),3.44(dd,J1=5.5Hz,J2=11.5Hz,1H),3.77(dd,J1=3.0Hz,J2=11.5Hz,1H),4.57(d,J=12.0Hz,1H),4.61(d,J=12.0Hz,1H),7.25-7.38(m,5H);13C NMR(75MHz,CDCl₃)d=44.3,50.8,70.8,73.3,127.7,128.4,137.8;HRMS(EI)m/z 164.0825(164.0837,C₁₀H₁₂O₂计算值,M⁺)
- 参考文献:[1] Collection of Czechoslovak Chemical Communications, 2009, vol.74, #5, p.651-769;[2] Chemistry - A European Journal, 2010, vol.16, #47, p.14074-14082;[3] Tetrahedron, 2002, vol.58, #25, p.5109-5117;[4] Bioorganic and Medicinal Chemistry, 2007, vol.15, #2, p.663-677;[5] European Journal of Organic Chemistry, 2005, #22, p.4773-4788;[6] Tetrahedron, 1994, vol.50, #32, p.9797-9824;[7] Organic Letters, 2009, vol.11, #4, p.891-893;[8] ChemMedChem, 2016, p.2216-2239;[9] Organic letters, 2000, vol.2, #26, p.4213-4216;[10] Tetrahedron, 2018, vol.74, #29, p.3981-3988;[11] Journal of Fluorine Chemistry, 2000, vol.102, #1-2, p.43-50;[12] Organic and Biomolecular Chemistry, 2006, vol.4, #10, p.1977-2002