Thermal decomposition of methylated γ-thiobutyrolactones: a photoelectron spectroscopic study
作者:Yek Tann Chua、Chupp Yew Mok、Hsing Hua Huang、Igor Novak、Siu Choon Ng
DOI:10.1039/p29960000577
日期:——
The thermaldecomposition of γ-thiovalerolactone, α-methyl-γ-thiobutyrolactone and β-methyl-γ-thiobutyrolactone has been studied in a gaseous flow system, by monitoring the changes in the photoelectron spectra recorded during the course of the reactions. Three modes of decomposition were observed, two involve loss of carbon monoxide (decarbonylation) and one involves loss of carbonyl sulfide (decarboxylation)
Thiocyanohydrins, a new class of compounds, precursors of unstabilized thiocarbonyl derivatives.
作者:A.C. Gaumont、L. Wazneh、J.M. Denis
DOI:10.1016/s0040-4020(01)80958-3
日期:1991.1
Mono- and dialkylated thiocyanohydrins are prepared by alkylation of the parent compound (NCCH2SH) under mild conditions. Some examples of the reactivity of this new class of compounds are also given.
Synthesis and Cyclic GMP Phosphodiesterase Inhibitory Activity of a Series of 6-Phenylpyrazolo[3,4-<i>d</i>]pyrimidones
作者:Bernard Dumaître、Nerina Dodic
DOI:10.1021/jm950812j
日期:1996.1.1
A series of 6-phenylpyrazolo[3,4-d]pyrimidones is described which are specific inhibitors of cGMP specific (type V) phosphodiesterase. Enzymatic and cellular activity as well as in vivo oral antihypertensiveactivity are evaluated. A n-propoxy group at the 2-position of the phenyl ring is necessary for activity. A series of products substituted at the 5-position in addition to the 2-n-propoxy was prepared
The present invention provides novel compounds and methods for treating diseases with aminothiophene inhibitors of IKK-&bgr; phosphorylation of I&kgr;B.
The gas-phase basicity and H/D exchange characteristics of the parent thiocarbonyl enolate anions
作者:Lijian Zhang、Joseph J. Grabowski
DOI:10.1039/c39890001819
日期:——
The enethiolate anions corresponding to thioacetaldehye and thioacetone, synthesized via elimination reactions, undergo H/Dexchange reactions, demonstrating the intermediacy of the thiocarbonyl tautomers, and proton transfer reactions, leading to ΔGacid0[CH3CHS]= 341 ± 3 kcal mol–1 and ΔGacid0[(CH3)2CS]= 344 ± 3 kcal mol–1(1 kcal = 4.184 KJ).