Ando, Ryoichi; Sugawara, Tomoo; Shimizu, Makoto; Kuwajima, Isao
Bulletin of the Chemical Society of Japan, 1984 , vol. 57, # 10 p. 2897 - 2904

Kuwajima, Isao; Ando, Ryoichi; Sugawara, Tomoo
Tetrahedron Letters, 1983 , vol. 24, # 41 p. 4429 - 4432