Iida, Hirokazu; Suda, Machiko; Nakajima, Etsuko; Hakamatsuka, Hiroko; Nagashima, Yuka; Joho, Kouta; Amemiya, Kenta; Moromizato, Tatsuya; Matsumoto, Kiyoshi; Murakami, Yasuoki; Hamana, Hiroshi
Heterocycles, 2010 , vol. 81, # 9 p. 2057 - 2062