| 摘要 |
A compound of formula (I)or a pharmaceutically acceptable salt thereof; for use as a medicament wherein:n is 0-1;Y is selected from -NH-, -O-, -S-, or -NR<7>- where R<7 >is alkyl of 1-6 carbon atomsR<5 >is chloro or bromo;Y is selected from -NH-, -O-, -S-, or -NR<7>- where R<7 >is alkyl of 1-6 carbon atomsR<6 >is a specified cyclic group which may be substituted by various specified substituents,or R<6 >is a group -R<8>-X-R<9 >whereR<8 >is selected from various cycloalkyl, pyridinyl, pyimidinyl, or phenyl ring; any of which may be optionally subsituted as described,where X is selected from CH2, -NH-, -O-, -S-, CH2 or -NR<5>- where R<5 >is alkyl of 1-6 carbon atoms, and R<9 >is a group (CH2)mR<10 >where m is 0, or an integer of from 1-3 and R<10 >is an optionally substituted aryl or optionally substituted cycloalkyl ring of up to 10 carbon atoms,or R<10 >is a heterocyclic ring containing 1 or 2 oxygen atoms and optionally one or more substitutents; and R<1>, R<2>, R<3 >and R<4 >are each independently selected from hydrogen or various specified organic groups. Novel compounds are also described. The compounds are particularly useful in the inhibition of MEK enzymes. |
