Novel tetracyclic benzo[b]carbazolones as highly potent and orally bioavailable ALK inhibitors: Design, synthesis, and structure—activity relationship study-Science-Chemical Encyclopedia-lookchem

Novel tetracyclic benzo[b]carbazolones as highly potent and orally bioavailable ALK inhibitors: Design, synthesis, and structure—activity relationship study
Add time:07/13/2019 Source:sciencedirect.com

Four series of tetracyclic benzo[b]carbazolone compounds possessing more rotatable bonds and higher molecular flexibility were designed by either inserting a linker within the C8-side chain or by opening the middle ketone ring on the basis of compound 5 (Alectinib, CH5424802). Compound 15b was identified showing nearly identical high potency against both wild-type and the gatekeeper mutant ALK kinase (3.4 vs 3.9 nM). This compound has favorable PK profile with an oral bioavailability of 67.1% in rats. Moreover, compound 15b showed significant growth inhibition against ALK driven cancer cells and KARPAS-299 xenograft model.

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