Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Ryo Takita"'
Autor:
Yu Zheng, Katsuyuki Sakai, Kohei Watanabe, Hiroshi Takagi, Yumi Sato-Shiozaki, Yuko Misumi, Yohei Miyanoiri, Genji Kurisu, Toshihiko Nogawa, Ryo Takita, Shunji Takahashi
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024)
Abstract To the best of our knowledge, enzymes that catalyse intramolecular Diels-Alder ([4+2] cycloaddition) reactions are frequently reported in natural product biosynthesis; however, no native enzymes utilising Lewis acid catalysis have been repor
Externí odkaz:
https://doaj.org/article/7ac52a8fadf64ebc863ac3670f2ebd36
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
π-Conjugated polymers are useful commodities as they are used in the fabrication of organic photovoltaic devices, light-emitting diodes and field effect transistors. Here the authors describe the polycondensation of bifunctional aryl ethers or aryl
Externí odkaz:
https://doaj.org/article/ffba5e7ee0304b2ab3292d2f5da46674
Autor:
Shigeru Nishizawa, Hitoshi Ouchi, Hiroto Suzuki, Takuma Ohnishi, Shingo Sasaki, Yu Oyagi, Masaki Kanakogi, Yoshitaka Matsumura, Shunsuke Nakagawa, Tomohiro Asakawa, Masahiro Egi, Makoto Inai, Fumihiko Yoshimura, Ryo Takita, Toshiyuki Kan
Publikováno v:
Organic & Biomolecular Chemistry. 21:1653-1656
The stereo-controlled total synthesis of (−)-domoic acid is described, including the crucial formation of the trisubstituted Z-olefin moiety and the incorporation of the side chain using modified Julia–Kocieński reaction in the final stage.
Autor:
Takashi Mino, Toshiki Yamaoka, Kohei Watanabe, Chihiro Masuda, Shohei Kasano, Yasushi Yoshida, Ryo Takita, Yoshio Kasashima, Masami Sakamoto
Publikováno v:
The Journal of Organic Chemistry. 87:7365-7377
Autor:
Kenji Yamashita, Ryo Hirokawa, Mamoru Ichikawa, Tatsunari Hisanaga, Yoshihiro Nagao, Ryo Takita, Kohei Watanabe, Yuji Kawato, Yoshitaka Hamashima
Publikováno v:
Journal of the American Chemical Society. 144:3913-3924
The mechanism of our previously reported catalytic asymmetric bromocyclization reactions using 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (BINAP) monoxide was examined in detail by the means of control experiments, NMR studies, X-ray structure analy
Autor:
Hiroyuki Osada, Yuji Sugita, Keisuke Fujiyama, Toshihiko Nogawa, Kiyomi Kinugasa, Suyong Re, Shunji Takahashi, Shingo Nagano, Kohei Watanabe, Tomoya Hino, Naoki Kato, Ryo Takita
Publikováno v:
Angewandte Chemie (International Ed. in English)
Enzymes catalyzing [4+2] cycloaddition have attracted increasing attention because of their key roles in natural product biosynthesis. Here, we solved the X‐ray crystal structures of a pair of decalin synthases, Fsa2 and Phm7, that catalyze intramo
Autor:
Ayako Watanabe, Kotaro Hama, Kohei Watanabe, Yuko Fujiwara, Kazuaki Yokoyama, Shigeo Murata, Ryo Takita
Publikováno v:
Angewandte Chemie International Edition. 61
Autor:
Ayako Watanabe, Kotaro Hama, Kohei Watanabe, Yuko Fujiwara, Kazuaki Yokoyama, Shigeo Murata, Ryo Takita
Publikováno v:
Angewandte Chemie. 134
Autor:
Ayako Watanabe, Kotaro Hama, Kohei Watanabe, Yuko Fujiwara, Kazuaki Yokoyama, Shigeo Murata, Ryo Takita
Publikováno v:
Angewandte Chemie International Edition. 61
We describe a concise and reliable protocol for the precisely controlled tetradeuteration of straight-chain fatty acids (FAs) at the α- and β-positions that is generally applicable to a variety of FAs, including trans-FAs, polyunsaturated FAs (PUFA
Autor:
Jia Hao Pang, Derek Yiren Ong, Ryo Takita, Bin Wang, Kohei Watanabe, Shunsuke Chiba, Yihang Li
Publikováno v:
Chemical Science
A concise protocol for anti-hydromagnesiation of aryl alkynes was established using 1 : 1 molar combination of sodium hydride (NaH) and magnesium iodide (MgI2) without the aid of any transition metal catalysts. The resulting alkenylmagnesium intermed