参考文献

Harkal, Surendra; Kumar, Kamal; Michalik, Dirk; Zapf, Alexander; Jackstell, Ralf; Rataboul, Franck; Riermeier, Thomas; Monsees, Axel; Beller, Matthias Tetrahedron Letters, 2005 , vol. 46, # 18 p. 3237 - 3240