Afatinib dimaleate

Details:

Description    

Afatinib dimaleate (Tovok; BIBW2992; Gilotrif) is a salt form of Afatinib. Afatinib is a second-generation, orally administered, irreversible inhibitor of the ErbB family of tyrosine kinases.
Mechanism of Action    

Afatinib (850140-73-7) downregulates ErbB signalling by covalently binding to the kinase domains of epidermal growth factor receptor (EGFR), human epidermal growth factor receptor (HER) 2 and HER4, resulting in irreversible inhibition of tyrosine kinase autophosphorylation; it also inhibits transphosphorylation of HER3. Afatinib is approved as monotherapy for the treatment of EGFR tyrosine kinase inhibitor (TKI)-na ve adults with locally advanced or metastatic non-small cell lung cancer (NSCLC) with activating EGFR mutations in the EU, and for the first-line treatment of patients with metastatic NSCLC whose tumours have EGFR exon 19 deletions or exon 21 (L858R) substitution mutations as detected by a US FDA-approved test in the US.
Description    Afatinib dimaleate was approved by the U.S. Food and Drug Administration (FDA) in 2013 for the treatment of non-small cell lung cancer (NSCLC). Specifically, it was approved for patients presenting with metastatic NSCLC tumors which contain epidermal growth factor receptor (EGFR) exon deletions or exon 21 mutations. Afatinib dimaleate is a covalent inhibitor of ErbB tyrosine kinases (tyk), which downregulates ErbB signaling by irreversible binding of EGFR tyk binding sites. While no manufacturing route has been disclosed to date, the most scalable published route likely derives from two Boehringer Ingelheim patents.