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Home › Spiroheterocycle-imidazo1,2-a!indeno1,2-e!pyrazine!-4'-ones, preparation thereof and drugs containing same

Spiroheterocycle-imidazo1,2-a!indeno1,2-e!pyrazine!-4'-ones, preparation thereof and drugs containing same

US Patent 5777114 · Granted Jul 7, 1998

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