Catalytic Carbo- and Aminoboration of Alkenyl Carbonyl Compounds via Five- and Six-Membered Palladacycles
作者:Zhen Liu、Hui-Qi Ni、Tian Zeng、Keary M. Engle
DOI:10.1021/jacs.8b00881
日期:2018.3.7
A palladium(II)-catalyzed alkene difunctionalization reaction has been developed, wherein B2pin2 is used to trap chelation-stabilized alkylpalladium(II) intermediates that are formed upon nucleopalladation. A range of carbon and nitrogennucleophiles were found to be suitable coupling partners in this transformation, providing moderate to high yields. Both 3-butenoic and 4-pentenoic acid derivatives
已开发出钯 (II) 催化的烯烃双官能化反应,其中 B2pin2 用于捕获在核钯化时形成的螯合稳定的烷基钯 (II) 中间体。发现一系列碳和氮亲核试剂是该转化中合适的偶联伙伴,可提供中等至高产率。3-丁烯酸和4-戊烯酸衍生物都是反应性底物类别,提供β,γ-和γ,δ-双官能化羧酸衍生物。这项工作代表了一种合成高度功能化二级硼酸盐的新策略,可以补充现有方法。
Synthesis and Pharmacological Evaluation of 1-Alkyl-N-[(1R)-1-(4-fluorophenyl)-2-methylpropyl]piperidine-4-carboxamide Derivatives as Novel Antihypertensive Agents
We synthesized and evaluated inhibitory activity against T-type Ca2+ channels for a series of 1-alkyl-N-[(1R)-1-(4-fluorophenyl)-2-methylpropyl]piperidine-4-carboxamide derivatives. Structure–activity relationship studies have revealed that the isopropyl substituent at the benzylic position plays an important role in exerting potent inhibitory activity, and the absolute configuration of the benzylic position was found to be opposite that of mibefradil, which was first launched as a new class of T-type Ca2+ channel blocker. Oral administration of N-[(1R)-1-(4-fluorophenyl)-2-methylpropyl]-1-[2-(3-methoxyphenyl)ethyl]piperidine-4-carboxamide (17f) lowered blood pressure in spontaneously hypertensive rats without inducing reflex tachycardia, an adverse effect often caused by traditional L-type Ca2+ channel blockers.
Opioid ligands with mixed properties from substituted enantiomeric <i>N</i>-phenethyl-5-phenylmorphans. Synthesis of a µ-agonist δ-antagonist and δ-inverse agonists
作者:Kejun Cheng、In Jong Kim、Mei-Jing Lee、Steven A. Adah、Tyler J. Raymond、Edward J. Bilsky、Mario D. Aceto、Everette L. May、Louis S. Harris、Andrew Coop、Christina M. Dersch、Richard B. Rothman、Arthur E. Jacobson、Kenner C. Rice
DOI:10.1039/b618875c
日期:——
A novel potent non-peptide morphine-like antinociceptive with μ-agonist and δ-antagonist properties represents a lead towards non-dependence producing analgesics.
The present invention relates to compounds of formula I,
1
in which R
0
; R
1
; R
2
; R
3
; R
4
; R
5
; R
6
; R
7
; Q; V, G and M have the meanings indicated in the claims. The compounds of formula I are valuable pharmacologically active compounds. They exhibit a strong antithrombotic effect and are suitable, for example, for the therapy and prophylaxis of cardiovascular disorders like thromboembolic diseases or restenoses. They are reversible inhibitors of the blood clotting enzymes factor Xa (FXa) and/or factor VIIa (FVIIa), and can in general be applied in conditions in which an undesired activity of factor Xa and/or factor VIIa is present or for the cure or prevention of which an inhibition of factor Xa and/or factor VIIa is indicated. The invention furthermore relates to processes for the preparation of compounds of formula I, their use, in particular as pharmaceuticals for treating the foregoing conditions, and pharmaceutical preparations comprising them.
tether between the piperidyl moiety and the terminal aromatic ring is important for potent antihypertensive activity. Oral administration of 6-fluoro-1-isopropyl-2-[1-(2-phenylethyl)piperidin-4-yl]carbonyl}-1,2,3,4-tetrahydroisoquinoline (3b) to spontaneously hypertensive rats (SHR) elicited antihypertensive effects without inducing reflex tachycardia, which is often caused by traditional L-type Ca²⁺