Compounds of the formula (I), in which Het, R, X, Y, R
1
and p have the meanings indicated in claim
1
, are autotaxin inhibitors and can be employed for the treatment of tumours.
Compounds of the formula (I), in which Het, R, X, Y, R1 and p have the meanings indicated in claim 1, are autotaxin inhibitors and can be employed for the treatment of tumors.
Compounds of the formula (I), in which R
1
, R
2
, R
3
, D, G, Q and W have the meanings indicated in claim (
1
), can and be employed for the treatment of tumours.