Anionic N-Fries Rearrangement of N-Alkyl-2-iodo Anilides Induced by Iodine−Magnesium Exchange: Application for Synthesis of Strained 1,2,3-Trisubstituted Indoles
摘要:
A superior, mild, high-yielding one-pot process for rapid access to oxo anilides has been developed that involves three cascade reactions: iodine-magnesium exchange, regiospecific ortho N-Fries rearrangement, and in situ trapping of the formed aniline anion. Coupled with McMurry cyclization, the two-step process allows ready synthesis of strained 1,2,3-trisubstituted indoles regioselectively.
The present invention describes compounds of the following formula: processes for their preparation, pharmaceutical compositions containing them, and their use in therapy. The compounds of the present invention inhibit IAPs (inhibitors of apoptosis proteins) and thus are useful in the treatment of cancer, autoimmune diseases and other disorders where a defect in apoptosis is implicated.