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 suppressing an immune response or treating cancer or a hematologic malignancy using compounds of formula I.
Effect of Hyperconjugation on the Decomposition of<i>N</i>-Alkyl-<i>N</i>-nitrosoacetamide