prov:value
| - to the former carbon atom is bound to said methylene group, R5 is either a group OR7 where R7 is a hydrogen atom or a benzyl group, or a group N4-methyl-piperazinyl, or else a group NHR8 wherein R8 is a hydroxyl, pyridinylmethyl or phenylmethyl group, A is an optionally substituted aromatic cycle, n is 1 or 2, X is CH, O or N, and Y is CH2, O or S, their preparation process and their applications
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