Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Kazuto Umezu"'
Publikováno v:
The Journal of Organic Chemistry. 88:2207-2213
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d29a8878a582786fce2f99c8694e74d3
https://doi.org/10.1021/acs.joc.2c02647
https://doi.org/10.1021/acs.joc.2c02647
Autor:
Haruyasu Asahara, Atsushi Bonkohara, Masaya Takagi, Kento Iwai, Akitaka Ito, Kotaro Yoshioka, Shinki Tani, Kazuto Umezu, Nagatoshi Nishiwaki
Publikováno v:
Organic & Biomolecular Chemistry. 20:2282-2292
DEMO serves as a synthetic equivalent of dicationic acetic acid to facilitate nucleophilic introduction of two kinds of substituents via N-acylimine, which affords tryptophan homologs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b668b97976d588de13b179ddb31f285
https://doi.org/10.1039/d1ob02482e
https://doi.org/10.1039/d1ob02482e
Publikováno v:
Chemistry Letters. 49:330-333
The one-step synthesis of 2-hydroxy-2-(trifluoromethyl)malonates is described. The nucleophilic trifluoromethylation of commercially available 2-oxo-malonates was possible by use of the Ruppert-Pra...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba1c9a73b644236bf7ded8a2b8527dfe
https://doi.org/10.1246/cl.190942
https://doi.org/10.1246/cl.190942
Autor:
Shinki Tani, Yuto Unno, Shuhei Kikuchi, Soichi Yokoyama, Nagatoshi Nishiwaki, Haruyasu Asahara, Kazuto Umezu, Kotaro Yoshioka
Publikováno v:
Current Organic Chemistry. 23:97-102
Tri-carbonylated oxiranes were efficiently synthesized by condensing a vicinal tricarbonyl compound with α-bromoketones in the presence of a base. This protocol was applicable to α–bromo-β-keto esters to create tetra-carbonylated oxiranes, from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7350cc47b54e07eb1f483c02c660256
https://doi.org/10.2174/1385272823666190112103813
https://doi.org/10.2174/1385272823666190112103813
Autor:
Nitaro Maekawa, Kozue Sotome, Atsushi Ishihara, Chisaki Ashida, Kumiko Osaki-Oka, Tsuyoshi Ichiyanagi, Kazuto Umezu, Hidetaka Hiyoshi, Kotomi Ueno, Akira Nakagiri, Naoki Endo, Masato Abe, Naoki Ube
Publikováno v:
Journal of Pesticide Science. 44:9-14
The ethyl acetate extract of the culture filtrate of Phlebia tremellosa promoted elongation of the lateral roots of lettuce seedlings at 250 µg/mL. We purified two compounds that promote root elongation by using activity-guided chromatographic fract
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb2e4d2b4ac1744c7935e10c0fbfd66d
https://doi.org/10.1584/jpestics.d18-056
https://doi.org/10.1584/jpestics.d18-056
Autor:
Nagatoshi Nishiwaki, Kotaro Yoshioka, Shu Kawakami, Shinki Tani, Haruyasu Asahara, Kazuto Umezu
Publikováno v:
Bulletin of the Chemical Society of Japan. 91:1715-1723
Various tetra-acceptor-substituted alkenes possessing unsymmetrical substituents have been effectively synthesized from vicinal tricarbonyl compounds. The alkenes have polyfunctionality and high el...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d767af83b9111c979da26f3d9a7a6c9
https://doi.org/10.1246/bcsj.20180213
https://doi.org/10.1246/bcsj.20180213
Autor:
Nobukatsu Nemoto, Shun Miyata, Izuru Kobayashi, Yudai Kitagawa, Shota Shingai, Naoki Wakuzawa, Kazuto Umezu, Masaji Akimoto
Publikováno v:
Transactions of the Materials Research Society of Japan. 43:237-240
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d5b35f60e4fc287d8a806536af07e1e
https://doi.org/10.14723/tmrsj.43.237
https://doi.org/10.14723/tmrsj.43.237
Autor:
Atsushi, Ishihara, Chisaki, Ashida, Naoki, Ube, Masato, Abe, Hidetaka, Hiyoshi, Kazuto, Umezu, Naoki, Endo, Kozue, Sotome, Nitaro, Maekawa, Akira, Nakagiri, Kumiko, Osaki-Oka, Tsuyoshi, Ichiyanagi, Kotomi, Ueno
Publikováno v:
Journal of pesticide science. 44(1)
The ethyl acetate extract of the culture filtrate of Phlebia tremellosa promoted elongation of the lateral roots of lettuce seedlings at 250 µg/mL. We purified two compounds that promote root elongation by using activity-guided chromatographic fract
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::41f0c581540f9ceb478b1368e0bd6139
https://pubmed.ncbi.nlm.nih.gov/30820167
https://pubmed.ncbi.nlm.nih.gov/30820167
Publikováno v:
Advanced Synthesis & Catalysis. 358:2817-2828
A mild, metal-free synthesis of polyfunctionalized N-acyl-N,O-hemiacetals was developed via the nucleophilic addition of unactivated amides to ketones. The protocol demonstrated a wide substrate scope, with good isolated yields. Additionally, their O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6198ae29a387347f91d50e4579bc81e
https://doi.org/10.1002/adsc.201600436
https://doi.org/10.1002/adsc.201600436
Publikováno v:
European Journal of Organic Chemistry. 5/30/2015, p3327-3337. 11p.