Further Study on the 1,4-α-Transglucosylation of Rubusoside, a Sweet Steviol-Bisglucoside from Rubus suavissimus(Organic Chemistry)
スポンサーリンク
概要
- 論文の詳細を見る
Rubusoside (the β-D-glucosyl ester of 13-O-β-D-glucosyl-steviol), which is the major sweet principle of leaves of Rubus suavissimus S. Lee, was subjected to 1,4-α-transglucosylation by the cyclodextringlucanotransferase-starch system (the CGTase system). The tri- and tetra-glucosylated products were isolated together with the mono- and di-glucosylated products, which had already been isolated. A prominent increase in intensity of the sweetness was observed for the compounds which were di- and tri-glucosylated at the 13-O-glucosyl moiety. This result further substantiated the structure-sweetness relationship for 1,4-α-glucosylated compounds of steviol-glycosides reported previously. For protection of the 19-COO-glucosyl moiety against glucosylation by the CGTase system, the 4-hydroxyl group of the 19-COO-glucosyl moiety was β-galactosylated by the β-galactosidase-lactose system. This galactosylated compound was subjected to a regio-selective glucosylation of the 13-O-glucosyl moiety by the CGTase system, which was followed by enzymic elimination of the galactosyl group to furnish an exclusive preparation of the improved sweeteners just mentioned.
- 社団法人日本農芸化学会の論文
- 1991-02-23
著者
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KASAI Ryoji
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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OHTANI Kazuhiro
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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Tanaka O
Institute Of Pharmaceutical Sciences Faculty Of Medicine Hiroshima University
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鎌田 喜一郎
長岡技術科学大学化学系
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Mizutani K
Maruzen Pharmaceuticals Co.
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Kasai R
Faculty Of Pharmaceutical Sciences Hiroshima International University
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Shigeki Doi
Research Laboratories, Maruzen Pharmaceuticals Co., Ltd.
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AIKAWA Yoko
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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ISHIKAWA Hiroshi
Osaka Municipal Technical Research Institute
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KITAHATA Sumio
Osaka Municipal Technical Research Institute
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MIZUTANI Kenji
Department of Research and Development, Maruzen Kasei Co., Ltd.
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Doi Shigeki
Department of Research and Development, Maruzen Kasei Co., Ltd.
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NAKAURA Masaharu
Department of Research and Development, Maruzen Kasei Co., Ltd.
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TANAKA Osamu
Osaka Municipal Technical Research Institute
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OHTANI Kazuhiro
Division of Medicinal Chemistry, Graduate School of Biochemical Sciences, Hiroshima University
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Ohtani Kazuhiro
Division Of Medicinal Chemistry Graduate School Of Biochemical Sciences Hiroshima University
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Shigeki Doi
Research Laboratories Maruzen Pharmaceuticals Co. Ltd.
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Aikawa Yoko
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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Kasai R
Hiroshima Univ. Hiroshima. Jpn
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Kasai Ryoji
Institute Of Pharmaceutical Sciences Faculty Of Medicine Hiroshima University
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Ishikawa H
Fukuyama Univ. Hiroshima Jpn
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Tanaka O
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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Mizutani Kimihiko
Division Of Applied Life Science Graduate School Of Agriculture Kyoto University
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Ohtani Kazuhiro
Institute Of Pharmaceutical Science Hiroshima University School Of Medicine
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Nakaura Masaharu
Department Of Research And Development Maruzen Kasei Co. Ltd.
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Mizutani Kenji
Department Of Anesthesiology And Critical Care Medicine Yokohama City University School Of Medicine
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