Therapeutic compounds
The invention provides compounds of formula (I) or a salt thereof as described herein. The invention also provides pharmaceutical compositions comprising a compound of formula (I), processes for preparing compounds of formula (I), intermediates useful for preparing compounds of formula (I) and therapeutic methods for treating cancer or treating autoimmune diseases or preventing transplant rejection using compounds of formula (I).
1. A compound of the formula:
or a salt thereof.
2. The compound of claim 1 which is:
or a salt thereof.
3. The compound of claim 1 which is:
or a salt thereof.
4. The compound of claim 1 which is:
or a salt thereof.
5. The compound of claim 1 which is:
or a salt thereof.
6. The compound of claim 1 which is:
or a salt thereof.
7. A composition comprising a compound of formula Ic as described in claim 1 , or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable diluent or carrier.