参考文献

Ito, Satoshi; Koizumi, Kazuya; Fukuda, Katsuhiko; Kameta, Naohiro; Ikeda, Tsukasa; Oba, Toru; Hiratani, Kazuhisa Tetrahedron Letters, 2006 , vol. 47, # 48 p. 8563 - 8566