梅澤純夫
Tetrahedron Letters, Volume 23, Issue 1, 1982, pp.81-84, Yoshio Nishimura, Sumio Umezawa
"A novel deaminative cyclization of aminoglycoside. Synthesis of a kanamycin B variant having 2-oxa-5-azabicyclo[2,2,2]oct-1,5-diene ring"
Tetrahedron Letters, Volume 23, Issue 1, 1982, pp.85-86, Yoshio Nishimura, Sumio Umezawa
"Total synthesis of bleomycin A21"
Tetrahedron Letters, Volume 23, Issue 5, 1982, pp.521-524, Tomohisa Takita, Yoji Umezawa, Sei-ichi Saito, Hajime Morishima, Hiroshi Naganawa, Hamao Umezawa, Tsutomu Tsuchiya, Toshiaki Miyake, Shunji Kageyama and, Sumio Umezawa, Yasuhiko Muraoka and, Masanobu Suzuki, Masami Otsuka, Masatoshi Narita, Susumu Kobayashi and, Masaji Ohno