Ryozo Numazawa
Mitsubishi
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Publication
Featured researches published by Ryozo Numazawa.
Bioscience, Biotechnology, and Biochemistry | 1993
Akihiro Sakimae; Yoshimasa Kobayashi; Naoto Ohsuga; Ryozo Numazawa; Hisao Ohnishi
Methyl L-β-acetylthioisobutyrate was racemized with 1,8-diazabicyclo-[5.4.0]-undecene-7 as a catalyst. Methyl methacrylate and thioacetic acid were identified as the intermediates of the reaction. Thioacetic acid was relatively unstable and susceptible to decomposition during the racemization process. The addition of excess methyl mechacrylate to the reaction mixture prevented a decrease of the racemate. The racemized ester was confirmed to be usable as a substrate for the enzymatic production of D-β-acetylthioisobutyric acid.
Archive | 1981
Hisao Onishi; Ryozo Numazawa
Archive | 1978
Hisao Onishi; Ryozo Numazawa; Hitoshi Takeda
Archive | 1990
Takao Miyamori; Makoto Uchida; Kanehiko Enomoto; Akihiro Sakimae; Ryozo Numazawa
Bioscience, Biotechnology, and Biochemistry | 1995
Eiji Ozaki; Akihiro Sakimae; Ryozo Numazawa
Bioscience, Biotechnology, and Biochemistry | 1992
Akihiro Sakimae; Akihiko Hosoi; Etsuko Kobayashi; Naoto Ohsuga; Ryozo Numazawa; Ichiro Watanabe; Hisao Ohnishi
Archive | 1987
Takao Miyamori; Ryozo Numazawa; Akihiro Sakimae; Hisao Onishi
Archive | 1984
Akihiro Sakimae; Yuri Kagawa; Ryozo Numazawa; Hisao Onishi
Bioscience, Biotechnology, and Biochemistry | 1994
Eiji Ozaki; Akihiro Sakimae; Ryozo Numazawa
Bioscience, Biotechnology, and Biochemistry | 1993
Akihiro Sakimae; Eiji Ozaki; Hiroko Toyama; Naoto Ohsuga; Ryozo Numazawa; Itsumi Muraoka; Eiichi Hamada; Hisao Ohnishi
