Fujimori, Ken; Matsuura, Takaharu; Mikami, Akihiro; Watanabe, Yoshihito; Oae, Shigeru; Iyanagi, Takashi Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1990 , # 5 p. 1435 - 1440