Conformational analysis of organic carbonyl compounds. Part 4. A 1H and 13C nuclear magnetic resonance study of formyl and acetyl derivatives of benzo[b]furan
an interestingly different behaviour by carbonyl derivatives of benzo[b] furan with respect to the same benzo[b] thiophene derivatives. The conformational analysis was carried out by the n.m.r. method by employing 1H and 13C chemical shifts, long-range proton–proton couplingconstants, and lanthanide-induced shifts (LIS) simulation. For the derivatives substituted in position 7, the LIS method is not
苯并[ b ]呋喃的甲酰基和乙酰基衍生物的构象研究提供了证据,表明在2和7衍生物的情况下,E,Z-构象混合物是溶剂依赖性的,Z-形式在极性较高的溶剂中占主导地位。在3-位和4-位上存在相同的取代基可得到主要具有Z-构象的化合物,并且不会因溶剂引起变化。这些结果表明,相对于相同的苯并[ b ]噻吩衍生物,苯并[ b ]呋喃的羰基衍生物具有令人感兴趣的不同行为。构象分析是通过nmr方法采用1 H和13 C化学位移,远距离质子-质子耦合常数和镧系元素诱导的位移(LIS)模拟。对于在7位取代的衍生物,LIS方法不适用于确定构象异构体,因为在溶液中会形成螯合物,其中Eu与羰基和杂环的氧原子键合以稳定Z -形式。通过对远距离质子-质子耦合常数,质子化学位移和经典介电理论的统计处理,建立了确定苯并[ b ]呋喃-7-甲醛的相对构象种群的定量方法。
[EN] 6-AMINO-1H-INDAZOLE AND 4-AMINOBENZOFURAN COMPOUNDS AS PHOSPHODIESTERASE 4 INHIBITORS<br/>[FR] COMPOSES DE 6-AMINO-1H-INDAZOLE ET DE 4-AMINOBENZOFURANE UTILISES EN TANT QU'INHIBITEURS DE PHOSPHODIESTERASE 4
申请人:MEMORY PHARM CORP
公开号:WO2004009557A1
公开(公告)日:2004-01-29
PDE4 inhibition is achieved by novel compounds, e.g., aminoindazole and aminobenzofuran analogs. The compounds of the present invention are of Formulas I and II: wherein R1, R2, R3, R4, R7 and R8 are as defined herein.
In Vivo Mitochondrial Labeling Using Positively-Charged Nitroxide Enhanced and Gadolinium Chelate Enhanced Magnetic Resonance Imaging
申请人:Kalyanaraman Balaraman
公开号:US20090214437A1
公开(公告)日:2009-08-27
A system and method for acquiring MR imaging data from a subject includes administering positively-charged nitroxides or gadolinium chelates for in vivo mitochondrial labeling, acquiring MR imaging data from the subject, and reconstructing an image of the subject having enhanced contrast in areas including metabolic and/or mitotic activity.
Phosphodiesterase 4 inhibitors, including aminoindazole and aminobenzofuran analogs memory 29
申请人:MEMORY PHARMACEUTICALS CORP.
公开号:US20040087584A1
公开(公告)日:2004-05-06
PDE4 inhibition is achieved by novel compounds, e.g., aminoindazole and aminobenzofuran analogs. The compounds of the present invention are of Formulas I and II:
1
wherein R
1
, R
2
, R
3
, R
4
, R
7
and R
8
are as defined herein.
Composition containing carbon nanotubes having coating thereof and process for producing them
申请人:Saitoh Takashi
公开号:US20060052509A1
公开(公告)日:2006-03-09
The object of the present invention is to provide a carbon nanotube composition that does not impair the characteristics of the carbon nanotubes itself, allows the carbon nanotubes to be dispersed or solubilized in a solvent, does not cause separation or aggregation of the carbon nanotubes even during long-term storage, has superior electrical conductivity, film formability and moldability, can be easily coated or covered onto a base material, and the resulting coated film has superior moisture resistance, weather resistance and hardness; a composite having a coated film composed thereof; and, their production methods. In order to achieve this object, the present invention provides a carbon nanotube composition that contains a conducting polymer (a) or heterocyclic compound trimer (i), a solvent (b) and carbon nanotubes (c), and may additionally contain a high molecular weight compound (d), a basic compound (e), a surfactant (f), a silane coupling agent (g) and colloidal silica (h) as necessary; a composite having a coated film composed of the composition; and, their production methods.