In 2012,Rice, Kenneth D.; Aay, Naing; Anand, Neel K.; Blazey, Charles M.; Bowles, Owen J.; Bussenius, Joerg; Costanzo, Simona; Curtis, Jeffry K.; Defina, Steven C.; Dubenko, Larisa; Engst, Stefan; Joshi, Anagha A.; Kennedy, Abigail R.; Kim, Angie I.; Koltun, Elena S.; Lougheed, Julie C.; Manalo, Jean-Claire L.; Martini, Jean-Francois; Nuss, John M.; Peto, Csaba J.; Tsang, Tsze H.; Yu, Peiwen; Johnston, Stuart published 《Novel Carboxamide-Based Allosteric MEK Inhibitors: Discovery and Optimization Efforts toward XL518 (GDC-0973)》.ACS Medicinal Chemistry Letters published the findings.Electric Literature of C3H8ClNO The information in the text is summarized as follows:
The ERK/MAP kinase cascade is a key mechanism subject to dysregulation in cancer and is constitutively activated or highly upregulated in many tumor types. Mutations associated with upstream pathway components RAS and Raf occur frequently and contribute to the oncogenic phenotype through activation of MEK and then ERK. Inhibitors of MEK have been shown to effectively block upregulated ERK/MAPK signaling in a range of cancer cell lines and have further demonstrated early evidence of efficacy in the clinic for the treatment of cancer. Guided by structural insight, a strategy aimed at the identification of an optimal diphenylamine-based MEK inhibitor with an improved metabolism and safety profile vs. PD-0325901 led to the discovery of development candidate 1-({3,4-difluoro-2-[(2-fluoro-4-iodophenyl)amino]phenyl}carbonyl)-3-[(2S)-piperidin-2-yl]azetidin-3-ol (XL518, GDC-0973) (I). I exhibits robust in vitro and in vivo potency and efficacy in preclin. models with sustained duration of action and is currently in early stage clin. trials. The results came from multiple reactions, including the reaction of Azetidin-3-ol hydrochloride(cas: 18621-18-6Electric Literature of C3H8ClNO)
Azetidin-3-ol hydrochloride(cas:18621-18-6) is one of azetidine.Azetidines (azacyclobutanes) constitute a well-known class of heterocyclic compounds. Azetidine scaffold has been discovered in several natural products.Electric Literature of C3H8ClNO Several pharmacologically important synthetic compounds also contain azetidine ring. Because of inherent ring strain, the synthesis of azetidines is a challenging endeavor.
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