Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Hideki Jona"'
Autor:
Hiroshi Kawamoto, Yoshikazu Iwasawa, Jun Shibata, Yasuhiro Goto, Shigeru Nakajima, Sachie Arai, Masanori Asai, Osamu Okamoto, Hideki Jona
Publikováno v:
Tetrahedron: Asymmetry. 20:2439-2446
An efficient and practical asymmetric synthesis of 1- tert -butyl 3-methyl (3 R ,4 R )-4-(2-oxo-2,3-dihydro-1 H -benzimidazol-1-yl)piperidine-1,3-dicarboxylate 1 , a useful intermediate for the synthesis of nociceptin antagonists, has been developed.
Publikováno v:
Bulletin of the Chemical Society of Japan. 76:1829-1848
A convergent total synthesis of F1α antigen, a member of the tumor-associated O-linked mucin glycosyl amino acid, was tried by one-pot sequential glycosylation. Highly α-selective glycosylation of amino acid 7 with thioglycoside 6 was successfully
Autor:
Zhiguo J. Song, Yoshimi Tsuchiya, Shigemitsu Okada, Takayuki Nemoto, Matthew M. Zhao, Atsushi Akao, Yoshiaki Kato, Koji Tomimoto, Kenji Niiyama, Hideki Jona, Toshiaki Mase
Publikováno v:
Tetrahedron. 58:3409-3415
An asymmetric synthesis of a selective endothelin A receptor antagonist 1b is described. A highly substituted pyridine intermediate 11a was efficiently prepared via a mono-amination of inexpensive 2,6-dichloropyridine followed by a Vilsmeier formylat
Publikováno v:
Bulletin of the Chemical Society of Japan. 75:291-309
A catalytic and stereoselective glycosylation of various glycosyl acceptors, such as methyl glycosides, thioglycosides, or a disarmed glycosyl fluoride, with benzyl-protected armed glycosyl fluoride was successfully carried out by using various proti
Autor:
Teruaki MUKAIYAMA, Hideki JONA
Publikováno v:
Proceedings of the Japan Academy, Series B. 78:73-83
Autor:
Shouichi Hiraga, Atsushi Akao, Shigemitsu Okada, Koji Tomimoto, Yoshimi Tsuchiya, Toshiaki Mase, Hideki Jona, Kenji Niiyama, Yoshiaki Kato
Publikováno v:
Chemical and Pharmaceutical Bulletin. 50:1066-1072
An asymmetric synthesis of a selective endothelin A receptor antagonist 1b is described. Asymmetric conjugate addition of aryllithium derived from 18 to the chiral oxazoline 17 followed by hydrolysis afforded 15 in 96% ee via purification as (S)-(-)-
Autor:
Hiroki Sato, Hideo Kiyonaga, Minoru Moriya, Yuichi Sugimoto, Shinnosuke Abe, Chinatsu Ikeura, Aya Shimizu, Terutaka Hashizume, Hideki Jona, Rie Nagano, Hideaki Imamura, Hajime Morishima, Norikazu Ohtake, Koji Yamada, Masato Nakano
Publikováno v:
Bioorganic & Medicinal Chemistry. 9:1571-1578
A new class of 1 beta-methylcarbapenems bearing a doubly quaternarized 1,4-diazabicyclooctane (DABCO) substituted dithiocarbamate moiety at the C-2 side chain was prepared, and the biological profiles of the compounds, including in vitro and in vivo
Publikováno v:
Helvetica Chimica Acta. 83:1901-1918
A catalytic and stereoselective glycosylation of several glycosyl acceptors with β-D-glycosyl fluoride was successfully performed in the presence of a catalytic amount of trityl tetrakis(pentafluorophenyl)borate (TrB(C6F5)4) or trifluoromethanesulfo
Autor:
Koji Yamada, Aya Shimizu, Norikazu Ohtake, Hideaki Imamura, Hajime Morishima, Terutaka Hashizume, Ryosuke Ushijima, Rie Nagano, Hideki Jona, Hiroki Sato
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 10:109-113
1Beta-methylcarbapenems having various 3,5-disubstituted pyrrolidinylthio-side chains at C-2 were designed and synthesized. Evaluation of their antibacterial activities indicated that J-111,347 (1a) is the first example of an extremely broad spectrum
Autor:
Aya Shimizu, Hideki Jona, Minoru Moriya, Hiroki Sato, Hideaki Imamura, Hideo Kiyonaga, Norikazu Ohtake, Masato Nakano, Ryosuke Ushijima, Nakagawa Susumu
Publikováno v:
Bioorganic & Medicinal Chemistry. 6:1089-1101
A new series of 1β-methyl carbapenems, in which a disubstituted-aminothiocarbonylthio moiety was attached to the C-2 position of the carbapenem nucleus, were prepared and evaluated for anti-MRSA activity. These derivatives showed good in vitro antib