Acylative Dealkylation of N-tert-Butyl-3-substituted Azetidines: Facile Access to [1.1.0]Azabicyclobutane, 3-Hydroxyazetidinium Hydrochloride, and 3-Azetidinones
摘要:
A novel acylative dealkylation of N-tert-butylazetidines and its application to the facile high-yield syntheses of [1.1.0]azabicyclobutane, 3-hydroxyazetidinium hydrochloride, and 3-azetidinones is described.
[EN] SOS1 INHIBITOR, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF<br/>[FR] INHIBITEUR DE SOS1, SON PROCÉDÉ DE PRÉPARATION ET SON APPLICATION<br/>[ZH] SOS1抑制剂及其制备方法和应用
Addition of RC(O)CI (R = Oft, Me, or Ph) across the highly strained N-C(3) sigma-bond in 3-bromomethyl-1-azabicyclo[1.1.0]butane (1) afforded the corresponding N-acyl-3-bromomethyl-3-chloroazetidines (2a-2c, respectively). Subsequent zinc promoted eliminative dehalogenation of 2a-2c produced the corresponding N-acyl-3-methyleneazetidines (3a-3c, respectively). Finally, ozonolysis of 3a-3c afforded the corresopnding N-acylazetidin-3-ones (4a-4c, respectively).
P324681WO 319 ABSTRACT INHIBITOR COMPOUNDS The present invention relates to compounds of Formula (I) that target the MLH1 or MLH1 and PMS2 proteins that are components of the DNA Mismatch Repair (MMR) process: Formula (I) wherein R6, Y1, Y2, A1, A2, A3, A4, R11, R12, R13 and R14 are each as defined herein. The present invention also relates to processes for the preparation of these compounds, to pharmaceutical compositions comprising them, and to their use in the treatment of proliferative disorders, such as cancer, as well as other diseases or conditions in which MLH1 or MLH1 and PMS2 activity is implicated.