Yasumasa Hamada
Chiba University
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Publication
Featured researches published by Yasumasa Hamada.
Organic Letters | 2010
Tetsuhiro Nemoto; Eri Yamamoto; Robert Franzén; Takashi Fukuyama; Riliga Wu; Toshihiko Fukamachi; Hiroshi Kobayashi; Yasumasa Hamada
The first enantioselective total synthesis of tangutorine has been achieved, wherein a Pd-catalyzed asymmetric allylic amination using a chiral diaminophosphine oxide (DIAPHOX) preligand was the key step.
Heterocycles | 2008
Osamu Hara; Hiroshi Fujino; Kazuishi Makino; Yasumasa Hamada
The palladium-catalyzed asymmetric intramolecular metallo-ene reaction of the type I substrate using 9-PBN and 9-NapBN smoothly takes place in the presence of B(OAc) 3 and/or NaBF 4 at room temperature to afford the products with up to 51%ee, the best value in this area.
Organic Letters | 2007
Tetsuhiro Nemoto; Takashi Fukuyama; Eri Yamamoto; Shinji Tamura; Tomoaki Fukuda; Takayoshi Matsumoto; Yuichi Akimoto; Yasumasa Hamada
Tetrahedron Letters | 2006
Tetsuhiro Nemoto; Tomoaki Fukuda; Yasumasa Hamada
Tetrahedron | 2008
Yayoi Yoshitomi; Hiromi Arai; Kazuishi Makino; Yasumasa Hamada
Tetrahedron Letters | 2007
Tetsuhiro Nemoto; Tatsurou Sakamoto; Takashi Fukuyama; Yasumasa Hamada
Tetrahedron Letters | 2006
Tetsuhiro Nemoto; Tatsurou Sakamoto; Takayoshi Matsumoto; Yasumasa Hamada
Organic Letters | 2007
Yayoi Yoshitomi; Kazuishi Makino; Yasumasa Hamada
Tetrahedron | 2007
Osamu Hara; Tomoaki Koshizawa; Kazuishi Makino; Iyo Kunimune; Atsushi Namiki; Yasumasa Hamada
Advanced Synthesis & Catalysis | 2009
Tetsuhiro Nemoto; Mutsumi Kanematsu; Shinji Tamura; Yasumasa Hamada
