| 摘要 |
<p>Compounds of formula (I), wherein P and P1 groups represent hydrogen, alkyl, heteroalkyl, aryl or aralkyl groups, optionally substituted or forming a ring, n is an integer between 0 and 2, m is an integer from 1 to 3, R1 and R3, that may be the same or different, represent alcoxycarbonyl groups, CN, NO2 or acyl groups, whereas R2 is an aryl group or a heteroaryl group that may be optionally substituted, are useful as active principles of pharmaceutical compositions.</p> |
