Zobrazeno 1 - 10 of 21 pro vyhledávání: '"KAISHU MOMONOI"'
1
Practical Synthesis of T-3761, (S)-10-(1-Aminocyclopropyl)-9-fluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido(1,2,3-de)-1,4-benzoxazine-6-carboxylic Acid
Autor: Hiroshi Kuroda, Kaishu Momonoi, F. Iino, Hirokazu Narita, Kazuya Hayashi, Yozo Todo, H. Takagi, Makoto Takata
Publikováno v: Chemical and Pharmaceutical Bulletin. 42:2629-2632
An economical 11-step synthesis of T-3761 (1), a new quinolone antibacterial agent discovered by us, has been developed. Commercially available 2, 3, 4, 5-tetrafluorobenzoic acid (2) has been transformed to 4-(1-acetaminocyclopropyl)-2, 3, 5-trifluor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2dcd7f789fe9ec3966da2579725eae18
https://doi.org/10.1248/cpb.42.2629
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2
ChemInform Abstract: Practical Synthesis of T-3761, (S)-10-(1-Aminocyclopropyl)-9-fluoro-3- methyl-7-oxo-2,3-dihydro-7H-pyrido(1,2,3-de)-1,4-benzoxazine-6- carboxylic Acid
Autor: F. Iino, Hirokazu Narita, Kazuya Hayashi, Hiroshi Kuroda, H. Takagi, Yozo Todo, Makoto Takata, Kaishu Momonoi
Publikováno v: ChemInform. 26
An economical 11-step synthesis of T-3761 (1), a new quinolone antibacterial agent discovered by us, has been developed. Commercially available 2, 3, 4, 5-tetrafluorobenzoic acid (2) has been transformed to 4-(1-acetaminocyclopropyl)-2, 3, 5-trifluor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d14859fe1b9aef74b01474abc282720
https://doi.org/10.1002/chin.199535200
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4
Studies on monocyclic .BETA.-lactam antibiotics. Part I. Synthesis of 4-substituted monocyclic .BETA.-lactams by a lewis acid-mediated reaction
Autor: Kaishu Momonoi, Takako Hori, Kiyoshi Tanaka, Saikawa Isamu, Chosaku Yoshida, Sumiko Kishimoto
Publikováno v: Agricultural and Biological Chemistry. 50:839-846
The synthesis of 4-substituted monocyclic α-lactam is described. The key step in this method was accomplished by nucleophilic replacement in the presence of Lewis acid, that is, (3S,4S)-4-acetoxy-3-phenylacetamido-2-azetidinone derivatives or oxazol
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c0cabb7e8536bc6973d9f2d89e27224
https://doi.org/10.1271/bbb1961.50.839
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7
Studies on monocyclic .BETA.-lactam antibiotics. II. Synthesis and antibacterial activity of 3-acylamino-2-azetidinone-1-oxysulfonic acids
Autor: Tetsumi Kitani, Katsuyuki Nagumo, Takako Hori, Yoshikazu Fukuoka, Chosaku Yoshida, Saikawa Isamu, Kaishu Momonoi, Joji Nakano
Publikováno v: The Journal of Antibiotics. 38:1536-1549
The synthesis and in vitro antibacterial and beta-lactamase inhibitory activity of the 2-azetidinone-1-oxysulfonic acids having a substituent at C-4 position of the beta-lactam ring are described. The influence of C-4 substituents on the antibacteria
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be5978cb17cc6436d1e196fff22d0a40
https://doi.org/10.7164/antibiotics.38.1536
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8
An efficient method for the preparation of 3-(substituted thiomethyl)-7-aminocephalosporins
Autor: I. Takakura, C. Kutani, Shuntaro Takano, Keiichi Tanaka, Kaishu Momonoi, Saikawa Isamu
Publikováno v: Chemical and Pharmaceutical Bulletin. 33:5534-5538
A practical method to prepare 7-amino-3-(substituted thiomethyl)-3-cephem-4-carboxylic acids (1) was developed. The acetoxy group of 3-acetoxymethyl-7-amino-3-cephem-4-carboxylic acid (7-ACA, 2) was displaced by various thiols in the presence of stro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99cae26bfd29f8a1aa4dd971eca404cd
https://doi.org/10.1248/cpb.33.5534
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