Zobrazeno 1 - 10
of 453
pro vyhledávání: '"Takeo, Kawabata"'
Autor:
Ayumi Imayoshi, Bhatraju Vasantha Lakshmi, Yoshihiro Ueda, Tomoyuki Yoshimura, Aki Matayoshi, Takumi Furuta, Takeo Kawabata
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Since the discovery of mechanically planar chiral rotaxanes and topologically chiral catenanes, their asymmetric synthesis has been a long-standing challenge. Here, the authors report enantioselective preparation of mechanically planar chiral rotaxan
Externí odkaz:
https://doaj.org/article/e8236e10a064472da76bf6e8c01ff2d3
Publikováno v:
Angewandte Chemie International Edition.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5264696d0c1be644039ce7518bedead6
https://doi.org/10.1002/anie.202303078
https://doi.org/10.1002/anie.202303078
Publikováno v:
European Journal of Organic Chemistry. 2022
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bb49e4a14f59a86aba80e082dc24a1f
https://doi.org/10.1002/ejoc.202200949
https://doi.org/10.1002/ejoc.202200949
Publikováno v:
Journal of the American Chemical Society. 143:1428-1434
The first total syntheses of punicafolin (1) and macaranganin (2) were achieved in seven steps, respectively, from commercial α-d-glucose. The characteristic features of the synthesis are (1) sequential site-selective introduction of the adequate ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c88f3a4651e04f9b809d45306de8b94
https://doi.org/10.1021/jacs.0c10714
https://doi.org/10.1021/jacs.0c10714
Autor:
Takuya, Murai, Yongning, Xing, Mayu, Kurokawa, Toshifumi, Kuribayashi, Masanori, Nikaido, Elghareeb E, Elboray, Shohei, Hamada, Yusuke, Kobayashi, Takahiro, Sasamori, Takeo, Kawabata, Takumi, Furuta
Publikováno v:
The Journal of organic chemistry. 87(9)
A one-pot transformation of biaryl dicarboxylic acids to (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9d92e8a9f4567224d005c54f61349d6e
https://pubmed.ncbi.nlm.nih.gov/35394787
https://pubmed.ncbi.nlm.nih.gov/35394787
Autor:
Takuya Murai, Norihiro Tokitoh, Wenjie Lu, Yusuke Kobayashi, Yoshihiro Ueda, Toshifumi Kuribayashi, Takahiro Sasamori, Kazuhiro Morisaki, Shohei Hamada, Takeo Kawabata, Takumi Furuta
Publikováno v:
ACS Catalysis. 11:568-578
D2-symmetric dirhodium(II) carboxylate catalysts that bear axially chiral binaphthothiophene δ-amino acid derivatives have been developed. Conformational control is supported through chalcogen-bond...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a42a6b470f9096b385492f296eb30019
https://doi.org/10.1021/acscatal.0c03689
https://doi.org/10.1021/acscatal.0c03689
Publikováno v:
Synlett. 32:728-732
A method for dirhodium-catalyzed C(sp3)–H amidation of N,N-dimethylanilines was developed. Chemoselective C(sp3)–H amidation of N-methyl group proceeded exclusively in the presence of C(sp2)–H bonds of the electron-rich aromatic ring. Site-sele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a46ee55892cf51f8d7cfee595a9f5fd5
https://doi.org/10.1055/a-1334-6450
https://doi.org/10.1055/a-1334-6450
Publikováno v:
Organic Letters. 22:5486-5490
The oxidation of p-methoxy benzyl (PMB) ethers was achieved using nitroxyl radical catalyst 1, which contains electron-withdrawing ester groups adjacent to the nitroxyl group. The oxidative deprotection of the PMB moieties on the hydroxy groups was o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e43d1db7d6ffa85679f56ba17c876e0d
https://doi.org/10.1021/acs.orglett.0c01839
https://doi.org/10.1021/acs.orglett.0c01839
Autor:
Takeo Kawabata, Yoshihiro Ueda, Takumi Furuta, Reiko Nishino, Elghareeb E. Elboray, Shohei Hamada
Publikováno v:
Chirality. 32:588-593
Axial chirality in N,N-dimethylaminopyridines as well as N,N-dipropylaminopyridines bearing an internal carboxy group were evaluated based on their racemization barriers and circular dichroism spectra. The half-life of racemization of N,N-dipropylami
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36d6cd612ec6915ee1e4f4665a1725e9
https://doi.org/10.1002/chir.23207
https://doi.org/10.1002/chir.23207
Publikováno v:
Chemistry Letters. 49:182-185
Total synthesis of cercidinin A (1) was achieved in 7 overall steps from d-glucose (9 steps from gallic acid) via sequential site-selective introduction of requisite galloyl groups into hydroxy gro...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a01e0a1f8c8e29894a79c9a2c3783250
https://doi.org/10.1246/cl.190872
https://doi.org/10.1246/cl.190872