Zheng, Bao-Zhong; Maeda, Hiroshi; Mori, Michiko; Kusaka, Shin-Ichi; Yonemitsu, Osamu; Matsushima, Tomohiro; Nakajima, Noriyuki; Uenishi, Jun-Ichi
Chemical and Pharmaceutical Bulletin, 1999 , vol. 47, # 9 p. 1288 - 1296