Discovery and optimization of a novel, selective and brain penetrant M1 positive allosteric modulator (PAM): The development of ML169, an MLPCN probe was written by Reid, Paul R.;Bridges, Thomas M.;Sheffler, Douglas J.;Cho, Hyekyung P.;Lewis, L. Michelle;Days, Emily;Daniels, J. Scott;Jones, Carrie K.;Niswender, Colleen M.;Weaver, C. David;Conn, P. Jeffrey;Lindsley, Craig W.;Wood, Michael R.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2011.Reference of 61150-57-0 This article mentions the following:
This Letter describes a chem. lead optimization campaign directed at VU0108370, a weak M1 PAM hit with a novel chem. scaffold from a functional HTS screen within the MLPCN. An iterative parallel synthesis approach rapidly established SAR for this series and afforded VU0405652 (ML169) (I), a potent, selective and brain penetrant M1 PAM with an in vitro profile comparable to the prototypical M1 PAM, BQCA, but with an improved brain to plasma ratio. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0Reference of 61150-57-0).
2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Reference of 61150-57-0
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary