| 摘要 |
<p>The derivatives have the formula I …<IMAGE>… in which n is 0, 1 or 2, R is hydrogen, alkyl or aralkyl, R<1> is hydrogen or alkyl, alkenyl, cycloalkyl, cycloalkenyl, cycloalkylalkyl, optionally substituted aryl or partially hydrogenated aryl, aryl-(C1-C4)-alkyl or aroyl-C1-alkyl, both of which can be substituted, a mono- or bicyclic heterocyclic radical or a side chain of a naturally occurring amino acid, R<2> is hydrogen, alkyl, alkenyl or aralkyl, X is alkyl, alkenyl, cycloalkyl, aryl which can be substituted, or 3-indolyl.</p> |
