The present invention provides a compound which has the effect of PDE inhibition, and which is useful as a medicament for preventing or treating schizophrenia or so on.
A compound of formula (I
0
):
wherein
R
1
represents
a substituent,
R
2
represents
a hydrogen atom, or a substituent,
R
3
represents
a hydrogen atom, or a substituent,
Ring A represents
an aromatic ring which can be substituted, and
Ring B represents
a 5-membered heteroaromatic ring which can be substituted,
or a salt thereof.
Synthesis of Some New Thieno[2,3-<i>b</i>]pyridines, Pyrimidino[4′,5′:4,5]thieno[2,3-<i>b</i>]-pyridines, and 2,3-Dihydro-1,3,4-thiadiazoles
作者:Abdou O. Abdelhamid、Zeineb H. Ismail、Soad M. Abdel-Gawad、Moustafa M. Ghorab、Anhar Abdel-Aziem
DOI:10.1080/10426500802077630
日期:2008.12.23
chloroacetonitrile. These compounds were conveniently converted into novel pyrido[4′,5′:4,5]thieno[3,2-d]pyrimidines. Also, 2,3-dihydro-1,3,4-thiadiazole was synthesized from hydrazonoyl halides and 2-benzofuran-2-yl-3-(phenylamino)-3-thioxopropanenitrile. The structures of the products have been elucidated by elemental analyses, spectral data studies, and alternative syntheses whenever possible. The
Aryldiazenyl Radicals from Arylazo Sulfones: Visible Light‐Driven Diazenylation of Enol Silyl Ethers
作者:Havall Othman Abdulla、Simone Scaringi、Ahmed A. Amin、Mariella Mella、Stefano Protti、Maurizio Fagnoni
DOI:10.1002/adsc.201901424
日期:2020.5.26
A versatile protocol for the diazenylation of enolsilylethers under visible light irradiation is presented herein. The reaction is based on the underused reaction of a nitrogen‐based radical (the diazenyl radical) with an enolsilylether. Arylazo sulfones were used as photoactivatable precursors of these diazenyl radicals. The resulting azaderivatives are potentially bioactive compounds as well
with ethyl 2-(2-phenylhydrazono)-2-chloroacetate. The structures of the newly prepared compounds were elucidated by spectral data. Eleven of the newly synthesized compounds were screened for their antibacterial activity. The results indicated that, compounds 5a, 5b, 9a, 9c, 11b and 12 were strong active toward Gram-positive bacteria Enterococcus faecalis. Compound 5a was strong active toward Gram-positive
X-ray diffraction study of crystal and molecular structure of acetylacetone azocompound — [C11H11N2O2F1]
作者:M. A. Magerramov、R. A. Alieva、R. Z. Nazarova、F. M. Chyragov、K. A. Potekhin
DOI:10.1134/s0022476611010276
日期:2011.2
The 3-[4-fluorophenylazopentandion]-2,4 reagent is synthesized based on acetylacetone, and its crystal and molecularstructure is studied by X-ray diffraction. It is found that [C11H11N2O2F] crystals 1 belong to the monoclinic symmetry, C2/c space group. The unit cell parameters of 1 are a = 18.827(3) Å, b = 12.839(2) Å, c = 26.475(5) Å, β = 104.834(2)°. The analysis shows that the reagent is present
以乙酰丙酮为原料合成了3-[4-氟苯基偶氮戊二酮]-2,4试剂,并通过X射线衍射研究了其晶体和分子结构。发现[C11H11N2O2F]晶体1属于单斜对称C2/c空间群。1 的晶胞参数是 a = 18.827(3) Å, b = 12.839(2) Å, c = 26.475(5) Å, β = 104.834(2)°。分析表明该试剂存在于溶液以及晶体中。对这三种结构与报告的数据进行了比较分析。