Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Yoshihiro, Ogasawara"'
Publikováno v:
Chemistry – An Asian Journal. 17
Addition reactions of ketene silyl acetals with alkenes that do not have an electron-withdrawing group are generally difficult because the nucleophilicity of ketene silyl acetals and the electrophilicity of alkenes are not sufficient. Herein, we repo
Publikováno v:
Organic letters. 23(15)
Under blue-light irradiation conditions with a photocatalyst [1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene], silyl enol ethers reacted with alkenes in the presence of a small amount of water to afford the α-alkylation products in good to high
Autor:
Masahiro Hirama, Tohru Oishi, Babak Alizadeh, Yoshihiro Ogasawara, Shoji Kobayashi, Yusuke Takahashi, S. Sasaki, Kazuo Komano, S. Tanaka, Yuuya Kawada
Publikováno v:
Tetrahedron. 60:8375-8396
The ABCDE ring moiety of ciguatoxin CTX3C, a major causative agent of ciguatera poisoning, was stereoselectively synthesized. The key transformations are a chiral auxiliary-based asymmetric alkylation and an asymmetric aldol condensation, which contr
Publikováno v:
Tetrahedron. 59:5645-5659
Ladder-shaped polyether natural products show diverse biological activities with extreme potency. As the initial phase of detailed SAR studies of bioactive polyethers, we set out to construct structurally simple mimics. This paper details the diverge
Autor:
Yoshihiro Ogasawara, Yumi Shindo, Masayuki Inoue, Masahiro Hirama, Megumi Maruyama, Hiroki Oguri, Tohru Oishi
Publikováno v:
Tetrahedron. 58:1835-1851
Ciguatoxin CTX3C is a representative congener of the ciguatoxins, which are known to be the principal causative-agents of ciguatera seafood poisoning. The structure of CTX3C spans over three nanometers and is characterized by thirteen ether rings. To
Autor:
Yumi Shindo, Masayuki Inoue, Tohru Oishi, Yoshihiro Ogasawara, Hiroki Oguri, Megumi Maruyama, Masahiro Hirama
Publikováno v:
ChemInform. 33
Autor:
Tomoko, Kimura, Yoko, Akiba, Miyoshi, Tsuruta, Toru, Akimoto, Yoshio, Mitsui, Yoshihiro, Ogasawara, Hiroshi, Ikegami
Publikováno v:
Japanese journal of infectious diseases. 59(6)
Autor:
Hajime, Yokoi, Miyoshi, Tsuruta, Toshimitsu, Tanaka, Mami, Tsutake, Yoko, Akiba, Tomoko, Kimura, Yoko, Tokita, Toru, Akimoto, Yoshio, Mitsui, Yoshihiro, Ogasawara, Hiroshi, Ikegami
Publikováno v:
Japanese journal of infectious diseases. 58(5)
Autor:
Yoko, Akiba, Tomoko, Kimura, Miyoshi, Takagi, Toru, Akimoto, Yoshio, Mitsui, Yoshihiro, Ogasawara, Mosayoshi, Omichi
Publikováno v:
Japanese journal of infectious diseases. 58(3)
Publikováno v:
Blood & Vessel. 16:33-35