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Design, synthesis, and antitumor activity of steganacin aza-analoguesKiyoshi Tomioka; Yoshihiro Kubota; Hisashi Kawasaki; Kenji Koga · 1989
Design, synthesis, and structure-cytotoxity relationships of aza-steganesYoshihiro Kubota; Hisashi Kawasaki; Kiyoshi Tomioka; Kenji Koga · 1993
Stereoselective reactions. XVIII. Synthesis and cytotoxicity of the demethyl derivatives of steganes.TOMIOKA, Kiyoshi; KAWASAKI, Hisashi; KOGA, Kenji · CHEMICAL & PHARMACEUTICAL BULLETIN · 1990
Control elements in the asymmetric tandem alkylation of α-alkylidene-γ-butyrolactone derivativesKiyoshi Tomioka; Hisashi Kawasaki; Kenji Koga · 1985
A model for the diastereofacial differentiation in the alkylation of endocyclic enolateTomioka, Kiyoshi.; Kawasaki, Hisashi.; Yasuda, Kosuke.; Koga, Kenji. · Journal of the American Chemical Society · 1988
Enantiospecific total synthesis of (-)-megaphone by a highly controlled consecutive 1,4- and 1,3-asymmetric inductionKiyoshi Tomioka; Hisashi Kawasaki; Yōichi Iitaka; Kenji Koga · 1985
A rationale of diastereofacial selection in the alkylation of endocyclic enolates with chirality at the β-positionKiyoshi Tomioka; Kōsuke Yasuda; Hisashi Kawasaki; Kenji Koga · 1986