Kikukawa, Kiyoshi; Idemoto, Tohru; Katayama, Atsuhiko; Kono, Kiyoshi; Wada, Fumio; Matsuda, Tsutomu Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1987 , p. 1511 - 1514