Skeletally Diverse Small Molecules Using a Build/Couple/Pair Strategy
作者:Takuya Uchida、Manuela Rodriquez、Stuart L. Schreiber
DOI:10.1021/ol900173t
日期:2009.4.2
catalytic, stereoselective cross-Mannich reactions followed by intramolecular functional group-pairing reactions of easily accessed variants of the Mannich products are explored as a route to skeletallydiversesmallmolecules. The synthetic pathway yields products having 12 different skeletons using only three steps and has the potential to enable substantial stereochemical diversification in the future.
Essential structure of orexin 1 receptor antagonist YNT-707, part III: Role of the 14-hydroxy and the 3-methoxy groups in antagonistic activity toward the orexin 1 receptor in YNT-707 derivatives lacking the 4,5-epoxy ring
Morphinan derivatives lacking the 4,5-epoxy ring were synthesized to examine the participation of the 14-OH group, the 3-OMe group, and the aromaticity of the A-ring in the activity and selectivity for the orexin 1 receptor (OX1R). The assay results and the conformational analyses of the 14-dehydrated and 14-H derivatives suggested that the orientations of the 6-amide side chain and the 17-benzenesulfonyl
Modular Cyclopentenone Synthesis through the Catalytic Molecular Shuffling of Unsaturated Acid Chlorides and Alkynes
作者:Yong Ho Lee、Elliott H. Denton、Bill Morandi
DOI:10.1021/jacs.0c10832
日期:2020.12.16
general strategy for the intermolecular synthesis of polysubstituted cyclopentenones using palladium catalysis. Overall, this reaction is achieved via a molecular shuffling process involving an alkyne, an α,β-unsaturated acid chloride, which serves as both the alkene and carbon monoxide source, and a hydrosilane to create three new C-C bonds. This newcarbon monoxide-free pathway delivers the products
我们描述了使用钯催化分子间合成多取代环戊烯酮的一般策略。总体而言,该反应是通过涉及炔烃、α,β-不饱和酰氯(作为烯烃和一氧化碳来源)和氢硅烷的分子改组过程实现的,以产生三个新的 CC 键。这种新的无一氧化碳途径提供了具有优异产量的产品。此外,区域选择性是对环戊烯酮合成常规方法的补充。此外,还提出了一组区域和化学发散反应,以强调这种新策略的合成潜力。
Nalfurafine, a κ-selective opioid receptor agonist, unexpectedly showed a selective antagonist activity toward the orexin 1 receptor (OX1R) (Ki = 250 nM). Modification of the 17-amino side chain of the opioid ligand to an arylsulfonyl group and the 6-furan acrylamide chain to 2-pyridyl acrylamide led to compound 71 with improvement of the antagonist activity (OX1R, Ki = 1.36 nM; OX2R, not active) without