abstract |
Disclosed are compounds of formula (I), wherein R, R<SUP>1</SUP>, R<SUP>2</SUP>, R<SUP>3</SUP>, R<SUP>4</SUP>, R<SUP>5</SUP>, R<SUP>6</SUP>, R<SUP>7</SUP>, R<SUP>8</SUP>, Z<SUP>1</SUP>, Z<SUP>2</SUP>, Z<SUP>3</SUP>, k, and Y<SUP>1</SUP> have the meanings indicated in claim 1. Said compounds can be used for the treatment of tumors, among other things. |