Katsuhiko Okano
Daiichi Sankyo
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Publication
Featured researches published by Katsuhiko Okano.
Journal of Computational Chemistry | 2002
Kenzi Hori; Nobumitsu Dou; Katsuhiko Okano; A. I. Ohgami; Hiroshi Tsukube
Stable conformations of 12‐crown‐O3N and its Li complexes in aqueous solution were investigated. To calculate the free energy differences of conformers of 12‐crown‐O3N and its Li+ complex, our procedure was to make use of two programs, CONFLEX and BOSS. The former generates conformers, and the latter calculates the differences in free energy of solvation between two conformers in aqueous solution. It was confirmed that the present procedure is applicable in solving the question of what is the most stable conformation of 12‐crown‐O3N in aqueous solution. Results of the calculations suggest that the order of stability for conformers in a vacuum is different from that in aqueous solution. It was also confirmed that the coordination geometry of solvent waters to Li+ changes depending on the distance between the cation and the crown ring.
Tetrahedron | 2004
Katsuhiko Okano; Hiroshi Tsukube; Kenzi Hori
Archive | 2000
Kouji Sato; Yoshihiro Takayanagi; Katsuhiko Okano; Keiji Nakayama; Akihiro Imura; Mikihiro Itoh; Tsutomu Yagi; Yukinari Kobayashi; Tomoyuki Nagai
Tetrahedron | 2008
Kenzi Hori; Makoto Sakamoto; Toru Yamaguchi; Michinori Sumimoto; Katsuhiko Okano; Hidetoshi Yamamoto
Journal of Computer Aided Chemistry | 2005
Kenzi Hori; Katsuhiko Okano; Kazuaki Yoshimura; Akiko Nishida; Hidetoshi Yamamoto
Archive | 2000
Kouji Sato; Yoshihiro Takayanagi; Katsuhiko Okano; Keiji Nakayama; Akihiro Imura; Mikihiro Itoh; Tsutomu Yagi; Yukinari Kobayashi; Tomoyuki Nagai
Journal of Computer Aided Chemistry | 2004
Kenzi Hori; Toru Yamaguchi; Katsuhiko Okano
Tetrahedron | 2005
Katsuhiko Okano; Hiroshi Tsukube; Kenzi Hori
Journal of Computer Aided Chemistry | 2005
Katsuhiko Okano; Kouji Satoh; Hideo Takahasi; Kenzi Hori
Archive | 2008
Kouji Sato; Yoshihiro Takayanagi; Katsuhiko Okano; Keiji Nakayama; Akihiro Imura; Mikihiro Itoh; Tsutomu Yagi; Yukinari Kobayashi; Tomoyuki Nagai
