Papers - Obata, Rika
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Synthesis and biological assessment of hemiacetal spiro derivatives towards development of efficient chemotherapeutic agent
Ogamino Takahisa, Ohnishi Sayo, Ishikawa Yuichi, Sugai Takeshi, Obata Rika, Nishiyama Shigeru
Science and Technology of Advanced Materials 7 ( 2 ) 175 - 183 2006.03
Research paper (scientific journal), Joint Work, Accepted, ISSN 1468-6996
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An expeditious chemo-enzymatic synthesis of dihydronorcapsaicin β-d-glucopyranoside
Sultana Israt, Shimamoto Miwa, Obata Rika, Nishiyama Shigeru, Sugai Takeshi
Science and Technology of Advanced Materials 7 ( 2 ) 197 - 201 2006.03
Research paper (scientific journal), Joint Work, Accepted, ISSN 1468-6996
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Chemo-enzymatic approach towards the capsaicin glucoside
Sultana, Israt, Shimamoto, Miwa, Obata, Rika, Nishiyama, Shigeru, Sugai, Takeshi
Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006 (AMERICAN CHEMICAL SOCIETY) 2006.03
Research paper (conference, symposium, etc.), Joint Work
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Asymmetric synthesis of aerothionin, a marine dimeric spiroisoxazoline natural product, employing optically active spiroisoxazoline derivative
Ogamino Takahisa, Obata Rika, Nishiyama Shigeru
Tetrahedron Letters 47 ( 5 ) 727 - 731 2006.01
Research paper (scientific journal), Joint Work, Accepted, ISSN 0040-4039
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Total synthesis, structural revision and biological evaluation of calafianin, a marine spiroisoxazoline from the sponge, Aplysina gerardogreeni.
T. Ogamino, R. Obata, H. Tomoda, and S. Nishiyama
Bulletin of the Chemical Society of Japan (Chemical Society of Japan) 79 ( 1 ) 134 - 139 2006.01
Research paper (scientific journal), Joint Work, Accepted, ISSN 0009-2673
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Solid-Phae Synthesis and Biological Activities of Biphenyl Ether-Containing Cyclic Oligopeptides
Nazuhiko Nakamura, Rika Obata, and Shigeru Nishiyama
Peptide Science 2005: T. Wakamiya (Ed.) (The Japanese Peptide Society) 42nd 127 - 130 2005.12
Research paper (conference, symposium, etc.), Joint Work, ISSN 1344-7661
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Efficient route to (S)-azetidine-2-carboxylic acid
Futamura Yasuhiko, Kurokawa Masayuki, Obata Rika, Nishiyama Shigeru, Sugai Takeshi
Bioscience, Biotechnology and Biochemistry 69 ( 10 ) 1892 - 1897 2005.10
Research paper (scientific journal), Joint Work, Accepted, ISSN 0916-8451
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Discovery of halogenated eurypamide B analogues as inhibitors of lipid droplet accumulation in macrophages
Obata Rika, Ohshiro Taichi, Tomoda Hiroshi, Nishiyama Shigeru
Bioorganic and Medicinal Chemistry Letters 15 ( 19 ) 4189 - 4191 2005.10
Research paper (scientific journal), Joint Work, Accepted, ISSN 0960-894X
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Purification of Shiga-like toxin 1 by pigeon egg white glycoproteins immobilized on Sepharose gels
Tomoda Hiroshi, Arai Masayoshi, Koyama Nobuhiro, Matsui Hidenori, Omura Satoshi, Obata Rika, Lee Yuan C.
Analytical Biochemistry 311 ( 1 ) 50 - 56 2002.12
Research paper (scientific journal), Joint Work, Accepted, ISSN 0003-2697
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Reversal of multidrug resistance by 7-O-Benzoylpyripyropene A in multidrug-resistant tumor cells.
Rho M. C., Hayashi M., Fukami A., Obata R., Sunazuka T., Tomoda H., Komiyama K., Omura S.
Journal of Antibiotics 53 ( 10 ) 1201 - 1206 2000.10
Research paper (scientific journal), Joint Work, Accepted, ISSN 0021-8820
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Synthetic conversion of ACAT inhibitor to acetylcholinesterase inhibitor
Obata Rika, Sunazuka Toshiaki, Otoguro Kazuhiko, Tomoda Hiroshi, Harigaya Yoshihiro, Omura Satoshi
Bioorganic and Medicinal Chemistry Letters 10 ( 12 ) 1315 - 1316 2000.06
Research paper (scientific journal), Joint Work, Accepted, ISSN 0960-894X
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Structure-activity relationships study of pyripyropenes: reversal of cancer cell multidrug resistance.
Obata Rika, Sunazuka Toshiaki, Harigaya Yoshihiro, Hayashi Masahiko, Rho Mun Chual, Tomoda Hiroshi, Omura Satoshi
Journal of Antibiotics 53 ( 4 ) 422 - 425 2000.04
Research paper (scientific journal), Joint Work, Accepted, ISSN 0021-8820
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ラット白血球遊走に対する14員環マクロライド系化合物の影響
OBATA RIKA
Japanese Journal of Antibiotics 53 ( Suppl A ) 85 - 88 2000
Research paper (scientific journal), Joint Work, Accepted
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Effects of erythromycin and its derivatives on interleukin-8 release by human bronchial epithelial cell line BEAS-2B cells
Sunazuka T., Takizawa H., Desaki M., Suzuki K., Obata R., Otoguro K., Omura S.
Journal of Antibiotics 52 ( 1 ) 71 - 74 1999.01
Research paper (scientific journal), Joint Work, Accepted, ISSN 0021-8820
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New analogs of the pyripyropene family of ACAT inhibitors via α-pyrone fragmentation and γ-acylation/cyclization
Obata Rika, Sunazuka Toshiaki, Tian Zhiming, Tomoda Hiroshi, Harigaya Yoshihiro, Omura Satoshi, Smith Amos B. III
Chemistry Letters (Chemical Society of Japan) ( 9 ) 935 - 936 1997.09
Research paper (scientific journal), Joint Work, Accepted, ISSN 0366-7022
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Chemical modification and structure-activity relationships of pyripyropenes. 3. Synthetic conversion of pyridine-pyrone moiety
Obata Rika, Sunazuka Toshiaki, Tian Zhiming, Tomoda Hiroshi, Harigaya Yoshihiro, Omura Satoshi
Journal of Antibiotics 50 ( 3 ) 229 - 236 1997.03
Research paper (scientific journal), Joint Work, Accepted, ISSN 0021-8820
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Chemical modification and structure-activity relationships of pyripyropenes. 1. Modification at the four hydroxyl groups
Obata Rika, Sunazuka Toshiaki, Li Zhuorong, Tian Zhiming, Harigaya Yoshihiro, Tabata Noriko, Tomoda Hiroshi, Omura Satoshi
Journal of Antibiotics 49 ( 11 ) 1133 - 1148 1996.11
Research paper (scientific journal), Joint Work, Accepted, ISSN 0021-8820
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Chemical modification and structure-activity relationships of pyripyropenes. 2. 1,11-cyclic analogs
Obata Rika, Sunazuka Toshiaki, Kato Yumiko, Tomoda Hiroshi, Harigaya Yoshihiro, Omura Satoshi
Journal of Antibiotics 49 ( 11 ) 1149 - 1156 1996.11
Research paper (scientific journal), Joint Work, Accepted, ISSN 0021-8820
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Biosynthesis of pyripyropene A
Tomoda H., Tabata N., Nakata Y., Nishida H., Kaneko T., Obata R., Sunazuka T., Omura S.
Journal of Organic Chemistry 61 ( 3 ) 882 - 886 1996.02
Research paper (scientific journal), Joint Work, Accepted, ISSN 0022-3263
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Total synthesis of (+)-pyripyropene A. A potent, orally bioavailable inhibitor of acyl-CoA
Nagamitsu Tohru, Sunazuka Toshiaki, Obata Rika, Tomoda Hiroshi, Tanaka Haruo, Harigaya Yoshihiro, Omura Satoshi, Smith Amos B.
Journal of Organic Chemistry 60 ( 25 ) 8126 - 8127 1995.12
Research paper (scientific journal), Joint Work, Accepted, ISSN 0022-3263