Research on heterocyclic compounds — Part XXXIX. 2-Methylimidazo[1,2-a]pyrimidine-3-carboxylic derivatives: Synthesis and antiinflammatory activity
摘要:
The synthesis of a group of 2-methylimidazo[1,2-a]pyrimidine-3-carboxylic esters, acids and amides is described. The structures of new compounds are supported by H-1 and C-13 NMR spectre. These compounds were tested in vivo for their antiinflammatory, analgesic. and ulcerogenic activity. Eight new compounds out of fifteen showed remarkable dose-dependent antiinflammatory action in the carrageenan rat paw edema (1/2-1/3 x indomethacin) but weak analgesic activity in the acetic acid writhing test together with negligible ulcerogenic action. The new compounds were found to be lacking in inhibitory activity on cyclooxygenase in vitro. (C) Elsevier, Paris.
Research on heterocyclic compounds — Part XXXIX. 2-Methylimidazo[1,2-a]pyrimidine-3-carboxylic derivatives: Synthesis and antiinflammatory activity
摘要:
The synthesis of a group of 2-methylimidazo[1,2-a]pyrimidine-3-carboxylic esters, acids and amides is described. The structures of new compounds are supported by H-1 and C-13 NMR spectre. These compounds were tested in vivo for their antiinflammatory, analgesic. and ulcerogenic activity. Eight new compounds out of fifteen showed remarkable dose-dependent antiinflammatory action in the carrageenan rat paw edema (1/2-1/3 x indomethacin) but weak analgesic activity in the acetic acid writhing test together with negligible ulcerogenic action. The new compounds were found to be lacking in inhibitory activity on cyclooxygenase in vitro. (C) Elsevier, Paris.
Synthesis and evaluation of a new series of substituted acyl(thio)urea and thiadiazolo [2,3-a] pyrimidine derivatives as potent inhibitors of influenza virus neuraminidase
作者:Chuanwen Sun、Xiaodong Zhang、Hai Huang、Pei Zhou
DOI:10.1016/j.bmc.2006.08.034
日期:2006.12
A series of substituted acyl(thio)urea and 2H-1,2,4-thiadiazolo [2,3-a] pyrimidine derivatives were prepared and both of their cell culture and enzymatic activity toward influenza virus were tested. Their in vitro neuraminidase inhibitory activities were in good agreement with the corresponding activities in cultured cells and they were evaluated as potent neuraminidase inhibitors. Of the analogues
A series of N-(5-aryl-2-furoyl)thioureaderivativescontainingsubstitutedpyrimidinering were synthesized in good yield using PEG-400 as solid-liquid phasetransfer catalyst underultrasonicirradiation. The structures of all newly synthesized compounds were elucidated and confirmed by IR, 1 H NMR and elemental analysis. Our method has the advantage of shorter reaction time and higher reaction yield
以PEG-400为固-液相转移催化剂,在超声辐照下以良好收率合成了一系列含取代嘧啶环的N-(5-aryl-2-furoyl)硫脲衍生物。所有新合成的化合物的结构均通过 IR、1 H NMR 和元素分析进行了阐明和确认。与传统的加热方法相比,我们的方法具有反应时间更短,反应产率更高的优点。初步生物学试验表明,部分目标化合物对单子叶植物和双子叶植物的根、茎有较好的抑制活性。
Synthesis of Hitherto Unknown 4,4-Bis(methylthio)but-3-en-2-one-1,1,1,3- d4 and Its Application as 1,3-Dielectrophilic Building Block for the Synthesis of Deuterated Heterocycles and Aromatics
Acetone-d6 has been transformed for the first time to 4,4-bis(methylthio)but-3-en-2-one- 1,1,1,3-d4. This tetradeutero-α-oxoketenedithioacetal is shown to be an excellent 1,3-dielectrophilic buildingblock for the synthesis of 5- and 6-membered deuterated heterocycles and aromatics.
MEANS FOR OXIDATIVE DYEING OF KERATIN FIBERS CONTAINING NOVEL TETRA-SUBSTITUTED DERIVATIVES OF PYRIMIDINE
申请人:Henkel AG & Co. KGaA
公开号:US20160296447A1
公开(公告)日:2016-10-13
Agents for oxidatively dyeing keratinous fibers include, in a cosmetic carrier, as an oxidation dye precursor of the developer type, at least one compound of formula (I) as set forth herein, in which R
1
, R
2
can stand independently of each other, for a hydrogen atom, different substituted alkyl groups, and/or different substituted acrylic groups, and Y stands for a hydroxyl group, an amino group, or a C
1
-C
6
alkylamino group, with the proviso that at least one of the moieties from the group R
1
and R
2
does not stand for a hydrogen atom, and/or the physiologically compatible salt thereof.