Direct Substitution of Arylalkynyl Carbinols Provides Access to Diverse Terminal Acetylene Building Blocks
作者:Narendran G-Dayanandan、Eric W. Scocchera、Santosh Keshipeddy、Heather F. Jones、Amy C. Anderson、Dennis L. Wright
DOI:10.1021/acs.orglett.6b03438
日期:2017.1.6
trimethoprim-resistant bacteria, synthetic methods were needed to prepare a diverse array of 3-aryl-propynes with various substitutions at the propargyl position. A direct route was sought whereby nucleophilic addition of acetylene to aryl carboxaldehydes would be followed by reduction or substitution of the resulting propargyl alcohol. The direct reduction, methylation, and dimethylation of these readily available
A compound of the formula (I): in which Z, R
1
, R
2
, R
8
, R
10
, R
11
, R
12
, R
13
and R
14
are each as defined in the description, or a salt thereof. The object compound of the present invention has pharmacological activities such as Tachykinin antagonism, and is useful for manufacture of a medicament for treating or preventing Tachykinin-mediated diseases.
Titanium oxo-clusters derivatized from the Ti<sub>10</sub>O<sub>12</sub>(cat)<sub>8</sub>(py)<sub>8</sub> complex: structural investigation and spectroscopic studies of light absorption
作者:Clément Chaumont、Alain Chaumont、Nathalie Kyritsakas、Pierre Mobian、Marc Henry
DOI:10.1039/c6dt00632a
日期:——
Ti10O12(cat)8 backbone for the three isolated molecular architectures. Partial charge analysis indicates two types of titanium atoms within these complexes with one resembling titanium(IV) found in TiO2. These complexes strongly absorb visible light in solution (λmax = 411 nm, ε = 10 800 for Ti10O12(cat)8(py)8 in CHCl3) and in the solid-state. The band gaps estimated from the reflectance spectra are between
报道了一系列带有儿茶酚配体的深红色纳米级钛氧基簇。这些体系结构是通过合成合成的Ti 10 O 12(cat)8(py)8(cat =儿茶酚素,py =吡啶)络合物通过不稳定的吡啶配体被三个取代的吡啶(pico,4-Phpy)定量取代而制得的和吡拉德(Pyrald)。晶体结构分析揭示了三种分离的分子结构共有的Ti 10 O 12(cat)8主链。部分电荷分析表明,这些络合物中存在两种类型的钛原子,其中一种类似于TiO中的钛(IV)。2。这些复合物强烈地吸收在溶液可见光( λ最大= 411纳米, ε = 10 800的Ti 10 ø 12(CAT) 8(PY) 8在CHCl 3),并在固体状态。根据反射光谱估计的带隙在1.85 eV和1.97 eV之间。本工作还详细介绍了通过DFT计算获得的Ti 10 O 12(cat) 8(py) 8和虚拟Ti 10 O 12(cat) 8的HOMO和L
Small organic molecule regulators of cell proliferation
申请人:Brunton Shirley Ann
公开号:US20080182859A1
公开(公告)日:2008-07-31
The present invention makes available methods and reagents for modulating proliferation or differentiation in a cell or tissue comprising contacting the cell with a compound. In certain embodiments, the methods and reagents may be employed to correct or inhibit an aberrant or unwanted growth state, e.g., by antagonizing a normal patched pathway or agonizing smoothened or hedgehog activity.
The present invention provides improved synthetic methods for the preparation of compounds that modulate proliferation or differentiation in a cell or tissue.