Zobrazeno 1 - 10 of 118 pro vyhledávání: '"Yuko, Otani"'
1
Akademický článek
Amide nitrogen pyramidalization changes lactam amide spinning
Autor: Yuko Otani, Xin Liu, Hisashi Ohno, Siyuan Wang, Luhan Zhai, Aoze Su, Masatoshi Kawahata, Kentaro Yamaguchi, Tomohiko Ohwada
Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)
Cis-trans lactam amide rotation is a fundamental process and its understanding might aid molecular design. Here, the authors report the synthesis and study of bicyclic lactams which undergo spin through 360 degrees as in open-chain amides, due to the
Externí odkaz: https://doaj.org/article/abbe06c5c40d47119ae8d500e4816855
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2
Akademický článek
A simple and effective preparation of quercetin pentamethyl ether from quercetin
Autor: Jin Tatsuzaki, Tomohiko Ohwada, Yuko Otani, Reiko Inagi, Tsutomu Ishikawa
Publikováno v: Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 3112-3121 (2018)
Among the five hydroxy (OH) groups of quercetin (3,5,7,3',4'-pentahydroxyflavone), the OH group at 5 position is the most resistant to methylation due to its strong intramolecular hydrogen bonding with the carbonyl group at 4 position. Thus, it is ge
Externí odkaz: https://doaj.org/article/b7d60617bc7943a082a8608f1698fe15
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6
Neighboring Group Participation of Nitrogen Cation to Form an Unusual Six-Membered Ring Intermediate During Oxime Rearrangement
Autor: Tomohiro Fujino, Tadashi Hyodo, Yuko Otani, Kentaro Yamaguchi, Tomohiko Ohwada
Publikováno v: The Journal of organic chemistry. 87(19)
Neighboring group participation involving a 6-membered ring structure is rare, despite the privilege of 6-membered ring transition structures in organic chemistry. We examined the putative role of a 6-membered cyclic intermediate with neighboring gro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d1496ba4702a26a7bdf385bfa377dea
https://pubmed.ncbi.nlm.nih.gov/36083501
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7
Contribution of Solvents to Geometrical Preference in the Z/E Equilibrium of N-Phenylthioacetamide
Autor: Kim Anh L. Vu, Yuko Otani, Shuyi Song, Kentaro Yamaguchi, Tadashi Hyodo, Hirotaka Ikeda, Satoshi Inagaki, Erika S. Chan, Yulan Tang, Tomohiko Ohwada
Publikováno v: The Journal of Organic Chemistry. 87:1641-1660
We studied the Z/E preference of N-phenylthioacetamide (thioacetanilide) derivatives in various solvents by means of 1H NMR spectroscopy, as well as molecular dynamics (MD) and other computational analyses. Our experimental results indicate that the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::abd6362690af1ec315dcbefd4435cfbb
https://doi.org/10.1021/acs.joc.1c00801
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8
Capsanthin Production in Escherichia coli by Overexpression of Capsanthin/Capsorubin Synthase from Capsicum annuum
Autor: Yasuo Mitani, Yuko Otani, Kohji Ohdan, Katsuro Yaoi, Norihiko Misawa, Akiko Kubo, Yoshinobu Terada, Miho Takemura, Maiko Furubayashi, Takashi Maoka
Publikováno v: Journal of Agricultural and Food Chemistry. 69:5076-5085
Capsanthin, a characteristic red carotenoid found in the fruits of red pepper (Capsicum annuum), is widely consumed as a food and a functional coloring additive. An enzyme catalyzing capsanthin synthesis was identified as capsanthin/capsorubin syntha
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2dc7783a577489d42763003fec134d2
https://doi.org/10.1021/acs.jafc.1c00083
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