Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Hiroko Kakuda"'
Publikováno v:
Bulletin of the Chemical Society of Japan. 86:620-627
Activation of dioxygen in the heme system is observed in an artificial aqueous model system. It has been demonstrated that in the system of a water-soluble hemin, tetrakis(N-methylpyridyl)porphinat...
Autor:
Koichi Inoue, Hiroko Kakuda, Hajime Yokoyama, Ken‐ichiro Awasaguchi, Masahiro Miyazawa, Ikuyo Uoya, Yoshiro Hirai, Koji Nakamura
Publikováno v:
Synlett. 2010:2392-2396
Spiro C-arylglycoriboside was synthesized in 21 steps via Pd(II)-catalyzed spirocyclization as a key reaction. Hemiketal was obtained in 47% overall yield from cis-2-butene-1,4-diol and spirocyclized with PdCl 2 (PhCN) 2 in dilute THF solution (0.01
Autor:
Masashi Kawasaki, Chiho Hiraoka, Kanako Katayama, Naoki Toyooka, Akihisa Inoue, Akira Tanaka, Hiroko Kakuda, Michimasa Goto, Yuka Asano, Tadashi Kometani
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 54:93-102
2-Substituted 4-chromanones were synthesized in their optically active forms. The chiral intermediates were obtained via lipase-catalyzed enantioselective reactions. Lipase and esterase were also used for the hydrolysis of ester moieties of the precu
Autor:
Masayuki Kirihara, Hiroko Kakuda, Tatsuhiro Akimoto, Minori Morishita, Akihiko Hatano, Takuya Noguchi, Yoshiro Hirai, Akihiro Shimajiri
Publikováno v:
Tetrahedron Letters. 47:3777-3780
The reaction of tertiary cyclopropyl silyl ethers with diethylaminosulfur trifluoride in electron-rich aromatic compounds causes the Friedel–Crafts alkylation to produce allylated or cyclopropylated aromatic compounds.
Autor:
Michimasa Goto, Tadashi Kometani, Yuko Hayashi, Hiroko Kakuda, Masashi Kawasaki, Shigeki Kawabata, Naoki Toyooka, Akira Tanaka
Publikováno v:
Tetrahedron: Asymmetry. 16:4065-4072
The highly enantioselective kinetic resolution of a racemic primary alcohol by lipase-catalyzed transesterification with vinyl 3-(4-trifluoromethylphenyl)propanoate afforded an enantiomerically pure primary alcohol. The versatility of this approach i
Autor:
Fumito Okafuji, Yoshihiro Mori, Kanae Ohto, Hiroko Kakuda, Taku Nakano, Noriyoshi Masuoka, Yasumaru Hatanaka
Publikováno v:
Bulletin of the Chemical Society of Japan. 78:703-709
In a model system of a water-soluble hemin, tetrakis(4-methylpyridyl)porphinatoiron(III) pentachloride (FeTMPyPCl5), with 3-methyl-2-benzothiazolinone hydrazone (MBTH), superoxide anion radical (O2...
Autor:
Mamiko Nagaoka, Hiroko Kakuda, Hiroshi Ochiai, Yuji Matsuya, Kazushige Sasaki, Naoki Toyooka, Nobuko Imanishi, Hideo Nemoto
Publikováno v:
The Journal of Organic Chemistry. 69:7989-7993
The synthesis and evaluation of antiviral activity of new furan-fused tetracyclic compounds are described. The syntheses were satisfactorily achieved on the basis of o-quinodimethane chemistry, using furan-containing benzocyclobutene derivatives as a
Autor:
Hiroko Kakuda, Masayuki Kirihara
Publikováno v:
Journal of Synthetic Organic Chemistry, Japan. 62:919-928
The reaction of tertiary cyclopropanol systems with hypervalent iodines in a protic solvent caused oxidative bond cleavage at C1-C2 and C2-C3 leading to alkenoic acids or their corresponding esters in high yields. In the cases of the compounds bearin
Publikováno v:
Bulletin of the Chemical Society of Japan. 76:2353-2360
Systems with pentafluoroiodosylbenzene (PFIB) and hemin (FeTPPCl8Cl) in dichloromethane were adopted to study the activities of the model system using toluenes as substrates for P450 enzymes. The oxidation products were mainly corresponding benzyl al
Publikováno v:
Tetrahedron: Asymmetry. 14:1529-1534
2-Methylchroman-4-one and 2-phenylchroman-4-one were synthesized in optically active form. Their chiral intermediates were obtained via lipase-catalyzed enantioselective reactions.