| 摘要 |
<p>This invention relates to compounds of the formula <IMAGE> I wherein R is a hydrogen atom, a lower alkyl, aryl or aryl-(lower alkyl) group, a 5-membered or 6-membered heteroaromatic group in which the hetero atom is nitrogen, oxygen or sulphur or a group of the formula (CH2)nCOR' or <IMAGE> (b) wherein R' is a hydroxy, lower alkoxy, amino, lower alkylamino, di-(lower alkyl)amino or arylamino group, n stands for an integer of 1 to 4, n' stands for an integer of 2 to 10, R1 and R2 each are a hydrogen atom or one of R1 and R2 is a hydrogen atom and the other is a hydroxy, lower alkoxy or benzyloxy group and X is a group of the formula <IMAGE> and pharmaceutically acceptable acid addition salts thereof, a process for their manufacture and medicaments containing them. These compounds and salts possess antitumor activity.</p> |
