Abstract:
Compounds of formula (I): wherein X is N, CH, CCF , or C(C aliphatic); R is sulfonic acid, C aliphatic-sulfonyl, sulfonyl-C aliphatic, C aliphatic-sulfonyl-C aliphatic, C aliphatic-amino, R -sulfonyl, R sulfonyl-C aliphatic, R -aminosulfonyl, R -aminosulfonyl-C aliphatic, R -sulfonylamino, R -sulfonylamino-C aliphatic, aminosulfonylamino, di-C aliphatic amino, di-C aliphatic aminocarbonyl, di-C aliphatic aminosulfonyl, di-C aliphatic amino, di-C aliphatic aminocarbonyl, di-C aliphatic aminosulfonyl-C aliphatic, (R ) -Arylamino, (R ) -Arylsulfonyl, (R ) -Aryl-aminosulfonyl, (R ) -Aryl-sulfonylamino, Het-amino, Het-sulfonyl, Het-aminosulfonyl, aminoiminoamino, or aminoiminoaminosulfonyl, R is hydrogen; and further wherein R and R are optionally joined to form a fused ring, pharmaceutical formulations comprising them and their use in therapy, especially in the treatment of diseases mediated by CDK2 activity, such as alopecia induced by cancer chemotherapy or radiotherapy.