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Cyclic amine derivatives
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Patent number 4,921,863
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Issue date May 1, 1990
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Eisai Co., Ltd.
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Hachiro Sugimoto
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C07 - ORGANIC CHEMISTRY
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Polypeptide
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Patent number 4,707,468
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Issue date Nov 17, 1987
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Eisai Co., Ltd.
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Hiroshi Yoshino
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Theobromine derivatives
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Patent number 4,493,837
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Issue date Jan 15, 1985
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Eisai Co., Ltd.
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Hachiro Sugimoto
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C07 - ORGANIC CHEMISTRY