Conformational and Chiroptical Properties of N-Nitrosoazetidines
摘要:
Optically active N-nitrosoazetidines, containing the isolated nitrosoazetidine chromophore, i.e. (2R)-1-nitroso-2-methylazetidine (2) and (4S)-1-nitroso-2,2-dibutyl-4-methylazetidine (5), are synthesized, and their H-1 NMR, CD, and UV spectra are studied. A topomerization mechanism, structural features, and chiroptical properties of the individual isomers of the parent 1-nitrosoazetidine (1) and its (2R)-2-methyl, (4R)-2,2,4-trimethyl, and (4S)-2,2-diethyl-4-methyl derivatives 2-4 are studied theoretically by means of non-empirical quantum chemical calculations. It is shown that the CD spectra of N-nitrosoazetidines can be interpreted on the basis of the two-position Z,E-equilibrium, taking into account the nonplanarity of the nitrosoazetidine chromophore. The Cotton effect sign of the n-pi* transition at 380 nm is determined by the intrinsic chirality of the chromophore and obeys a spiral rule.
Discovery of BLU-945, a Reversible, Potent, and Wild-Type-Sparing Next-Generation EGFR Mutant Inhibitor for Treatment-Resistant Non-Small-Cell Lung Cancer
作者:Meredith S. Eno、Jason D. Brubaker、John E. Campbell、Chris De Savi、Timothy J. Guzi、Brett D. Williams、Douglas Wilson、Kevin Wilson、Natasja Brooijmans、Joseph Kim、Ayşegül Özen、Emanuele Perola、John Hsieh、Victoria Brown、Kristina Fetalvero、Andrew Garner、Zhuo Zhang、Faith Stevison、Rich Woessner、Jatinder Singh、Yoav Timsit、Caitlin Kinkema、Clare Medendorp、Christopher Lee、Faris Albayya、Alena Zalutskaya、Stefanie Schalm、Thomas A. Dineen
DOI:10.1021/acs.jmedchem.2c00704
日期:2022.7.28
While epidermalgrowthfactorreceptor (EGFR) tyrosine kinase inhibitors (TKIs) have changed the treatment landscape for EGFR mutant (L858R and ex19del)-driven non-small-cell lung cancer (NSCLC), most patients will eventually develop resistance to TKIs. In the case of first- and second-generation TKIs, up to 60% of patients will develop an EGFR T790M mutation, while third-generation irreversible TKIs
[EN] HETEROCYCLIC EGFR INHIBITORS FOR USE IN THE TREATMENT OF CANCER<br/>[FR] INHIBITEURS HÉTÉROCYCLIQUES D'EGFR DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT DU CANCER
申请人:BLUEPRINT MEDICINES CORP
公开号:WO2022271612A1
公开(公告)日:2022-12-29
The present disclosure provides a compound represented by structural formula (I) or a pharmaceutically acceptable salt thereof useful for treating a cancer.