Expedient synthesis of highly substituted 3,4-dihydro-1,2-oxathiine 2,2-dioxides and 1,2-oxathiine 2,2-dioxides: revisiting sulfene additions to enaminoketones
作者:Stuart Aiken、Kelechi Anozie、Orlando D. C. C. de Azevedo、Lewis Cowen、Ross J. L. Edgar、Christopher D. Gabbutt、B. Mark Heron、Philippa A. Lawrence、Abby J. Mills、Craig R. Rice、Mike W. J. Urquhart、Dimitrios Zonidis
DOI:10.1039/c9ob01657k
日期:——
Diversely substituted 1,2-oxathiine 2,2-dioxides, including 3,5,6-triaryl-, 3,6-diaryl-, 3,5-diaryl-, 5,6-diaryl- and selected fused heterocyclic analogues, have been efficiently obtained by the application of a mild Cope elimination of a 4-amino moiety from the requisite 4-amino-3,4-dihydro-1,2-oxathiine 2,2-dioxides, which themselves were readily obtained by the addition of sulfenes to enaminoketones
Synthesis and Antibacterial Activity of Novel 5-(heteroaryl)isoxazole Derivatives
作者:R. Janaki RamaRao、A.K.S. Bhujanga Rao、N. Sreenivas、B. Suneel Kumar、Y. L. N. Murthy
DOI:10.5012/jkcs.2011.55.2.243
日期:2011.4.20
Isoxazole계 화합물을 합성하고 항균활성연구를 수행하였다. 3-Di(alkylamino)acryloalkanones을 hydroxylamine hydrochloride 또는 hydroxylamine-O-sulphonic acid와 반응시켜서 target isoxazole계 화합물을 합성하였다.
The synthesis, characterization and antibacterial activity of novel isoxazole derivatives were reported. 3-Di (alkylamino)acryloalkanones were prepared and used as synthons to get the target isoxazole derivatives via reaction with hydroxylamine hydrochloride or hydroxylamine-O-sulphonic acid.
A facile, regioselective synthesis of pyrazolo[1, 5-a]pyrimidine analogs in the presence of KHSO4 in aqueous media assisted by ultrasound and their anti-inflammatory and anti-cancer activities
5-a]pyrimidine derivatives under ultrasound irradiation assisted by KHSO4 in aqueous medium. 3-(4-Methoxyphenyl)-3-oxopropanenitrile reacted with hydrazine hydrate in refluxing ethanol to give 5-(4-methoxyphenyl)-1H-pyrazol-3-amine. Condensation of 3-aminopyrazoles with formylated active proton compounds furnished pyrazolopyrimidines in high to excellent yield. The chemical structure and regioselectivity
摘要描述了一种环境友好,简单,有效和方便的方法,该方法用于在水性介质中在KHSO 4辅助的超声辐射下合成新型吡唑并[1,5- a ]嘧啶衍生物。3-(4-甲氧基苯基)-3-氧代丙烷腈与水合肼在回流的乙醇中反应,得到5-(4-甲氧基苯基)-1 H-吡唑-3-胺。3-氨基吡唑与甲酰化的活性质子化合物的缩合以高至优异的产率提供了吡唑并嘧啶。通过IR,1 H NMR,13确认合成的化合物的化学结构和区域选择性1 H NMR和质谱数据。对所选化合物进行了X射线晶体学研究。此外,筛选了这些合成的化合物的抗炎和抗癌活性,结果令人鼓舞。该方案的主要优点是收率高,操作简单,反应时间短,并且没有苛刻的反应条件。 图形概要
ALKYNE-BRIDGED HETERO-AROMATICS AND USES THEREOF
申请人:CAI Zhen-Wei
公开号:US20130158031A1
公开(公告)日:2013-06-20
This invention relates to novel alkyne-bridged hetero-aromatics as described in the specification which are PDE10A inhibitors and useful for the treatment of neurological, psychiatric disorder, metabolic disorders, such as Schizophrenia, Parkinson's disease, Huntington's disease, Alzheimer's disease, learning memory disorder, drug addiction (abuse), sleeping disorder, depression, obesity, non-insulin dependent diabetes, bipolar disorder, obsessive compulsive disorder, or pain; to process for their preparation; to pharmaceutical compositions comprising them; and to methods of using them.