The object of the invention is to provide a novel compound having an inhibitory action on PDE4 activity with fewer side effects.
The invention provides a compound represented by the following general formula (1), possible stereoisomers thereof or racemates thereof, pharmacologically acceptable salts thereof, hydrates thereof, solvated compounds thereof, or prodrugs thereof,
A NEW METHOD FOR ACYLATION OF ENOLATES BY MEANS OF DIALKYL ACYLPHOSPHONATES AS ACYLATING AGENTS
作者:Mitsuo Sekine、Akiko Kume、Masashi Nakajima、Tsujiaki Hata
DOI:10.1246/cl.1981.1087
日期:1981.8.5
Acylations of various enolates by means of diethyl acylphosphonates were described. For the acylation of acetophenone, lithium bis(trimethylsilyl)amide (LSA) was found to be suitable as the base. The scope and limitation of the benzoylation using diethyl benzoylphosphonates were also described.
Synthesis and Antidiabetic Activity of Some Sulfonylurea Derivatives of 3,5-Disubstituted Pyrazoles
作者:Raafat soliman、Hassan mokhtar、Hosny F. Mohamed
DOI:10.1002/jps.2600720907
日期:1983.9
Three series of 3,4,5-trisubstituted pyrazolesulfonylurea derivatives were prepared and evaluated as hypoglycemic agents. Preliminary biological testing revealed that the new compounds possess moderate hypoglycemic activity.
A recyclable, convenient, and efficientcatalytic system for C-acylation of 1,3-dicarbonyl compounds and malononitrile with acid chlorides has been developed, giving moderate to excellent yields under mild conditions. This is the firstcatalytic example of such reactions. In addition, by applying this protocol as the key step, 3,5-disubstituted-1H-pyrazole-4-carboxylate can easily be synthesized in