To develop a highly safe measure to treat Alzheimer's disease using a secretase-inhibiting substance, there is provided a compound represented by the following general formula (I) or a salt thereof:
wherein A represents a phenyl group or the like, R
1
represents a chlorine atom, a bromine atom, or a nitro group or the like, R
2
, R
3
, R
4
, and R
5
each represent a hydrogen atom or the like, and L represents CH
2
—CH
2
or CH═CH.
Synthesis of Monodisperse Naphthalene Dendrons for the Application of Dendrimers
作者:Raveendra Jillella、Jaewoong Kim、Kun Hee Kim、Jin Wook Han、Chang Ho Oh
DOI:10.1002/bkcs.11556
日期:2018.9
and urethane derivatives. The napthol, 1‐(3‐hydroxy‐6‐(methoxymethoxy)naphthalen‐1‐yl)ethan‐1‐one (h), was synthesized by employing Au‐catalyzed cyclization of the corresponding propargylic carboxylates. Polynapthol dendrons (i, j, k, and l) were prepared from substitution reactions of napthyl derivative h with alkyl/aryl halides under basic conditions. Branched polyurethane compounds (q, r, and s)
One-pot copper-catalyzed three-component reaction: a modular approach to functionalized 2-quinolones
作者:Ah Reum Kim、Hee Nam Lim
DOI:10.1039/d0ra01352h
日期:——
A copper-catalyzed three-component annulation for the synthesis of functionalized 2-quinolones was developed. Three reactions including an SN2, a Knoevenagel, and finally C–N bond formation are involved in the designed cascade reaction using 2-bromoacylarenes, 2-iodoacetamide, and nucleophiles as the three components. A new catalytic system was discovered during the study and this modular approach
开发了一种用于合成功能化 2-喹诺酮类的铜催化三组分环化。使用 2-溴代芳烃、2-碘乙酰胺和亲核试剂作为三个组分的设计级联反应涉及三个反应,包括 S N 2、Knoevenagel 和最后形成 C-N 键。研究期间发现了一种新的催化系统,这种模块化方法可以高效地获得功能化的 2-喹诺酮衍生物,与广泛的官能团兼容,可扩展且经济。所得产物的进一步衍生证明了该方法的合成效用。
Step-economical synthesis of 3-amido-2-quinolones by dendritic copper powder-mediated one-pot reaction
作者:Byung Hoon Ahn、Ill Young Lee、Hee Nam Lim
DOI:10.1039/c8ob01994k
日期:——
The one-pot protocol by the dendritic copper powder-mediated Knoevenagel condensation/annelation is delineated here for the synthesis of 3-amido-2-quinolones. It is practical with moisture tolerance and easy setup, and is compatible with many functional groups under mild conditions. This method was applied for the preparation of the key intermediates of biologically relevant 3-amido-2-quinolones.
ESTROGENIC COMPOUNDS, PROCESS FOR THEIR PRODUCTION AND PHARMACEUTICAL USES THEREOF
申请人:Shadnia Hooman
公开号:US20090234024A1
公开(公告)日:2009-09-17
The present invention provides new estrogenic compounds of the general formula
in which the substituents have the meanings that are explained in more detail in the description, and pharmaceutical compositions containing them. The compounds of the invention are useful, for example, in hormone replacement therapies (HRT/ERT) and as contraceptives and estrogenic hormone therapies. Also provided is a process for synthesizing the compounds of the invention.