Synthesis and biological evaluation of aromatic enones related to curcumin
作者:Thomas Philip Robinson、Richard B. Hubbard、Tedman J. Ehlers、Jack L. Arbiser、David J. Goldsmith、J. Phillip Bowen
DOI:10.1016/j.bmc.2005.03.054
日期:2005.6
It has been specifically shown to be an effective inhibitor of angiogenesis both in vitro and in vivo. Using curcumin as a lead compound for anti-angiogenic analog design, a series of structurally related compounds utilizing a substituted chalcone backbone have been synthesized and tested via an established SVR cell proliferation assay. The results have yielded a wide range of compounds that equal or
Superacid-Catalyzed Reactions of Cinnamic Acids and the Role of Superelectrophiles<sup>1</sup>
作者:Rendy、Yun Zhang、Aaron McElrea、Alma Gomez、Douglas A. Klumpp
DOI:10.1021/jo030327t
日期:2004.4.1
formation of dicationic intermediates (superelectrophiles), and the reactions can lead to either chalcone-type products or indanone products. The directobservation of a dicationic species (by low-temperature 13C NMR) is reported. We provide clear evidence that protonated carboxylic acid groups (or the corresponding acyl cation) can enhance the reactivity of an adjacent electrophilic center. Triflic acid
已经研究了肉桂酸和相关化合物的化学性质。在超酸催化的芳烃反应中,提出了两种相互竞争的反应机理。两种机理都涉及形成阳离子型中间体(超亲电子试剂),并且这些反应可导致查尔酮类产物或茚满酮产物。据报道直接观察到一种特殊的物质(通过低温13 C NMR)。我们提供了明确的证据,表明质子化的羧酸基团(或相应的酰基阳离子)可以增强相邻亲电中心的反应活性。三氟甲磺酸还被发现是从肉桂酸直接合成某些缺电子的查耳酮和杂环查耳酮的有效酸催化剂。
Solventless Wittig Olefination with Fluorinated Benzaldehydes
作者:Thies Thiemann
DOI:10.3184/030823407x225464
日期:2007.6
Fluorinated benzaldehydes undergo solventless Wittig olefination with stabilisedphosphoranes. Even with less reactive, stabilisedphosphoranes, such as acetylmethylidenetriphenylphosphorane, the reactions have been found to be exothermic.
Chalcone and its analogs as agents for the inhibition of angiogenesis and related disease states
申请人:——
公开号:US20020040029A1
公开(公告)日:2002-04-04
The present invention relates to chalcone and chalcone derivatives and analogs which are useful as angiogenesis inhibitors. The present compounds, which are inexpensive to synthesize, exhibit unexpectedly good activity as angiogenesis inhibitors. The present invention also relates to the use of chalcone and its analogs as antitumor/anticancer agents and to treat a number of conditions or disease states in which angiogenesis is a factor, including angiongenic skin diseases such as psoriasis, acne, rosacea, warts, eczema, hemangiomas, lymphangiogenesis, among numerous others, as well as chronic inflammatory disease such as arthritis.
Palladium-Catalyzed Heck-Type Coupling via C–N Cleavage
作者:Bainian Feng、Weizheng Fan、Faming Liu
DOI:10.1055/s-0034-1379911
日期:——
A palladium-catalyzed Heck-type coupling method between arenes and ketone Mannich bases via C-N cleavage to synthesize chalcones is reported. This protocol offers good yields and tolerates a broad range of functional groups. Based on the extensive experimental data, we propose a plausible coulping mechanism.