A practical, simple, and efficient copper-catalyzed atomtransferradicaladdition reaction of alkenes with α-bromoacetonitrile is realized. With this methodology, various γ-bromonitriles and β,γ-unsaturated nitriles were efficiently constructed.
Design, synthesis and biological evaluation of tetrazole-containing RXRα ligands as anticancer agents
作者:Zhiqiang Yan、Shuyi Chong、Huiyun Lin、Qian Yang、Xin Wang、Weidong Zhang、Xiaokun Zhang、Zhiping Zeng、Ying Su
DOI:10.1016/j.ejmech.2018.12.036
日期:2019.2
plays an important role in many biological and pathological processes. The nongenomic action of RXRα is implicated in many cancers. K-8008, a non-canonical RXRα ligand derived from sulindac, inhibits the TNFα-activated PI3K/AKT pathway by mediating the interaction between a truncated form of RXRα (tRXRα) and the p85α regulatory subunit of PI3K and exerts potent anticancer activity in animal model. Herein
One-pot synthesis of indeno-1,2-thiazines, -[1,2]dithioles and thiophenes; new liquid crystalline materials
作者:Lidia S. Konstantinova、Oleg A. Rakitin、Charles W. Rees、Ljudmila I. Souvorova、Tomás Torroba
DOI:10.1039/a809808e
日期:——
In a search for further examples of a new type of discotic liquid crystal, we have examined the reactions of S2Cl2 in the presence of a chlorinating agent (NCS) and a base (Hünig’s base or DABCO), mostly in THF, with cyclopent-1-enylacetic acid 6, inden-3-ylacetic acid 8 and its nitrile 16 and 1-(dicyanomethylene)indane 22. The cyclopentene acid 6 gives purple crystals of the trichlorocyclopenta[1,2]dithiole ester 7, the product of heterocyclic ring formation, chlorination and dehydrochlorination and, unexpectedly, conversion of the acid in THF into its 4-chlorobutyl ester. Indenylacetic acid 8 gives methyleneindenes 10 and 11, the tricyclic 1,2-dithiolone 12 and the deep purple thiophene 13. Indenylacetonitrile 16 gives the chlorocyanomethylene indane 17 and the E- and Z- isomers of both the dichloroindene 18 and the monochloroindane 19, depending upon the precise reaction conditions. Dicyanomethylene indane 22 gives the dichloroindene 23 and the red, thermochromic indeno-1,2-thiazine 24; the analogous cyano-ester 25 gives the corresponding products. On melting, crystals of 13 and 23 are strongly birefringent. Mechanisms are proposed for the new transformations.
Use of spirocyclic compounds as oxytocin antagonists
申请人:MERCK & CO. INC.
公开号:EP0444945A3
公开(公告)日:1992-05-13
Disclosed are spirocyclic compounds of the formula:
The compounds of formula I are oxytocin antagonists useful in the treatment of preterm labor and dysmenorrhea, and for the stoppage of labor preporatory to Caesarian delivery. Also disclosed are pharmaceutical compositions containing these compounds as well as methods for preparing the compounds.
Compounds, compositions and methods are provided for modulating the activity of receptors and for the treatment, prevention, or amelioration of one or more symptoms of disease or disorder related to the activity of the receptors.