参考文献:[1] US2013/178457, 2013, A1;[2] WO2013/5168, 2013, A2;[3] Tetrahedron Letters, 2011, vol.52, #41;[4] Journal of Organic Chemistry, 1986, vol.51, #7;[5] WO2013/74892, 2013, A1;[6] US9125407, 2015, B2;[7] Journal of the Chemical Society, 1938;[8] Journal of the American Chemical Society, 1950;[9] Journal of the American Chemical Society, 1957;[10] Australian Journal of Chemistry, 1959;[11] Chemical Biology and Drug Design, 2013;[12] Chemistry - A European Journal, 2013;[13] Bioorganic and Medicinal Chemistry Letters, 2013;[14] European Journal of Medicinal Chemistry, 2014;[15] Organic and Biomolecular Chemistry, 2017