Microwave-mediated reactions of 3-aminomethylpyridines with acetylenedicarboxylates. A novel synthetic route to dihydronaphthyridines and naphthyridine-1-ones
摘要:
Reaction of 3-(1-alkylamino)pyridines with electron deficient acetylenes in the presence of acids yields 1,2-dihydro-[2,7]naphthyridine-3,4-dialkyldicarboxylates 4 in 35-72% yield. Compounds 4 unsubstituted in position 1 can be easily oxidized with potassium permanganate into the respective naphthyridine-1-ones derivatives 5 in good yields. (c) 2005 Elsevier Ltd. All rights reserved.
REV-ERB alpha has emerged as an important target for regulation of circadian rhythm and its associated physiology. Herein, we report on the optimization of a series of REV-ERB alpha agonists based on G5K4112 (1) for potency, selectivity, and bioavailability.(1) Potent REV-ERB alpha agonists 4, 10, 16, and 23 are detailed for their ability to suppress BMAL and IL-6 expression from human cells while also demonstrating excellent selectivity over LAR alpha. Amine 4 demonstrated in vivo bioavailability after either iv or oral dosing.