Palladium-catalysed dehydrogenative sp3 C-H bonds functionalisation into alkenes: A direct access to N-alkenylbenzenesulfonamides
The palladium-catalysed dehydrogenation of sp3 carbon-hydrogen bonds of N-alkylbenzenesulfonamides allows a simple access to N-alkenylbenzenesulfonamides. The reaction proceeds with easily accessible catalysts, with pivalate as a base, and allo
Bheeter, Charles B.,Jin, Rongwei,Bera, Jitendra K.,Dixneuf, Pierre H.,Doucet, Henri
p. 119 - 124
(2014/03/21)
Design and discovery of a selective small molecule κ opioid antagonist (2-methyl- n -((2′-(pyrrolidin-1-ylsulfonyl)biphenyl-4-yl) methyl)propan-1-amine, PF-4455242)
By use of parallel chemistry coupled with physicochemical property design, a series of selective κ opioid antagonists have been discovered. The parallel chemistry strategy utilized key monomer building blocks to rapidly expand the desired SAR space. The potency and selectivity of the in vitro κ antagonism were confirmed in the tail-flick analgesia model. This model was used to build an exposure-response relationship between the ? Ki and the free brain drug levels. This strategy identified 2-methyl-N-((2′- (pyrrolidin-1-ylsulfonyl)biphenyl-4-yl)methyl)propan-1-amine, PF-4455242, which entered phase 1 clinical testing and has demonstrated target engagement in healthy volunteers.