Synthesis and Structure−Activity Relationships of a Novel Series of 2,3,5,6,7,9-Hexahydrothieno[3,2-b]quinolin-8(4H)-one 1,1-Dioxide KATP Channel Openers: Discovery of (−)-(9S)-9-(3-Bromo-4-fluorophenyl)-2,3,5,6,7,9- hexahydrothieno[3,2-b]quinolin-8(4H)-one 1,1-Dioxide (A-278637), a Potent KATP Opener That Selectively Inhibits Spontaneous Bladder Contractions
摘要:
Structure-activity relationships were investigated on a novel series of sulfonyldihydropyridine-containing K-ATP openers. Ring sizes, absolute stereochemistry, and aromatic substitution were evaluated for K-ATP activity in guinea pig bladder cells using a fluorescence-based membrane potential assay and in a pig bladder strip assay. The inhibition of spontaneous bladder contractions in vitro was also examined for a select group of compounds. All compounds studied showed greater potency to inhibit spontaneous bladder contractions relative to their potencies to inhibit contractions elicited by electrical stimulation. In an anesthetized pig model of myogenic bladder overactivity, compound 14 and (-)-cromakalim 1 were found to inhibit spontaneous bladder contractions in vivo at plasma concentrations lower than those that affected hemodynamic parameters. Compound 14 showed approximately 5-fold greater selectivity than I in vivo and supports the concept that bladder-selective K-ATP channel openers may have utility in the treatment of overactive bladder.
Synthesis and Structure−Activity Relationships of a Novel Series of 2,3,5,6,7,9-Hexahydrothieno[3,2-b]quinolin-8(4H)-one 1,1-Dioxide KATP Channel Openers: Discovery of (−)-(9S)-9-(3-Bromo-4-fluorophenyl)-2,3,5,6,7,9- hexahydrothieno[3,2-b]quinolin-8(4H)-one 1,1-Dioxide (A-278637), a Potent KATP Opener That Selectively Inhibits Spontaneous Bladder Contractions
摘要:
Structure-activity relationships were investigated on a novel series of sulfonyldihydropyridine-containing K-ATP openers. Ring sizes, absolute stereochemistry, and aromatic substitution were evaluated for K-ATP activity in guinea pig bladder cells using a fluorescence-based membrane potential assay and in a pig bladder strip assay. The inhibition of spontaneous bladder contractions in vitro was also examined for a select group of compounds. All compounds studied showed greater potency to inhibit spontaneous bladder contractions relative to their potencies to inhibit contractions elicited by electrical stimulation. In an anesthetized pig model of myogenic bladder overactivity, compound 14 and (-)-cromakalim 1 were found to inhibit spontaneous bladder contractions in vivo at plasma concentrations lower than those that affected hemodynamic parameters. Compound 14 showed approximately 5-fold greater selectivity than I in vivo and supports the concept that bladder-selective K-ATP channel openers may have utility in the treatment of overactive bladder.
Copper-Catalyzed Thiolation of Terminal Alkynes Employing Thiocyanate as the Sulfur Source Leading to Enaminone-Based Alkynyl Sulfides under Ambient Conditions
A highlyefficient protocol for copper-catalyzed thio-alkynylation of enaminone-based thiocyanates with terminalalkynes under mild conditions has been developed. This scalable amino group-directed thio-alkynylation proceeds in the open air with a broad substrate scope and an excellent yield. The demonstrated synthetic transformation creates the opportunity for a wide variety of sulfur-containing useful
Compounds having the formula I:
are useful in treating diseases prevented by or ameliorated with potassium channel openers. Also disclosed are potassium channel opening compositions and a method of opening potassium channels in a mammal.
An electrochemical method for the C(sp2)−H thiocyanation of pyrazol-5-amines and enamines were developed in an undivided cell. A variety of thiocyanated pyrazol-5-amine and enamine derivatives were accessed in 36–91% yields, employing thiocyanate salts as electrolyte and thiocyanating reagent. Moreover, this electrochemical protocol can be extended to the synthesis of various iodinated and brominated
Iron(III)-Catalyzed Amine-Release Triple Condensation of Enaminones to C3-Alkenylated Dihydroquinolinones
作者:Qiaoqiao Wang、Xu Yuan、Haoyang Sun、Jimei Yang、Xingjiang Yang、Jun Lin、Yi Jin
DOI:10.1021/acs.joc.4c00750
日期:2024.8.2
C3-functionalized dihydroquinolinones represent a class of important biologically active compounds. Although methods for synthesizing C2/4-functionalized dihydroquinolinones have been extensively reported, research on the synthesis of C3-functionalized dihydroquinolinone is extremely rare. Herein, we report for the first time a method for C3-alkenylateddihydroquinolinones via iron(III)-catalyzed amine-release