| 摘要 |
<p>Derivatives in the form of racemates or enantiomers corresponding to the formula (I) <IMAGE> in which Z denotes an oxygen atom or 2 hydrogen atoms, R1 or R2 or R3 or R4 denotes the methyl radical while the others are hydrogen atoms, and their salts of addition to pharmaceutically acceptable acids. Application in therapeutics.</p> |
