参考文献:[1] Journal of the American Chemical Society, 2000, vol. 122, #37, p.8898-8909;[2] Patent: WO2012/119941, 2012, A1, Page/Page column 110;[3] Journal of the American Chemical Society, 2003, vol. 125, #23, p.6852-6853;[4] Bioorganic and Medicinal Chemistry, 2013, vol.21, #18, p.5694-5706