Takaya Yabuta

Bifunctional thiourea-catalyzed enantioselective double Michael reaction of γ,δ-unsaturated β-ketoester to nitroalkene: asymmetric synthesis of (−)-epibatidine

Y. Takemoto, Yasutaka Hoashi, Takaya Yabuta, 2004 .

Enantioselective tandem michael reaction to nitroalkene catalyzed by bifunctional thiourea : total synthesis of (-)-epibatidine

Y. Takemoto, Yasutaka Hoashi, Takaya Yabuta, 2006 .