描述了在氢借位催化下使用1°或2°醇对各种酮进行的烷基化。最初的研究集中在环丙酮与更高的1°醇(即大于MeOH)的α-烷基化反应上,导致形成α-支化产物。我们通过寻找其他底物来探索这种化学反应,使我们发现,二邻位取代的芳基酮也是特有的支架,其中Ph ∗(C 6 Me 5)酮是最佳选择。进一步的研究表明,该基序对于与2°醇形成β支链产物的烷基化至关重要,这也为研究非对映选择性和分子内氢借入过程提供了机会。
The first heterogeneous carbonylative Stille coupling of organostannanes with aryl iodides catalyzed by MCM-41-supported bidentate phosphine palladium(0) complex
作者:Mingzhong Cai、Guomin Zheng、Guodong Ding
DOI:10.1039/b914844m
日期:——
The first heterogeneous carbonylative Stillecouplingreaction of organostannanes with aryl iodides under an atmospheric pressure of carbon monoxide has been achieved in DMF at 80 °C in the presence of a catalytic amount of an MCM-41-supported bidentate phosphine palladium(0) complex [MCM-41-2P-Pd(0)], yielding a variety of unsymmetrical ketones in good to high yields. This polymeric palladium catalyst
Antiproliferative effects of chalcones on T cell acute lymphoblastic leukemia‐derived cells: Role of PKCβ
作者:Emanuela Corsini、Giorgio Facchetti、Sara Esposito、Ambra Maddalon、Isabella Rimoldi、Michael S. Christodoulou
DOI:10.1002/ardp.202000062
日期:2020.7
series of 20 chalcone derivatives was synthesized, and their antiproliferative activity was tested against the human Tcellacutelymphoblasticleukemia‐derivedcell line, CCRF‐CEM. On the basis of the structural features of the most active compounds, a new library of chalcone derivatives, according to the structure–activity relationship design, was synthesized, and their antiproliferative activity was
A new strategy for the synthesis of 3,5-disubstituted phenols is established through one-pot Robinson annulation of α,β-unsaturated ketones with α-fluoro-β-ketoesters followed by in situ dehydrofluorination and tautomerization. This method has been extended to the synthesis of polysubstituted phenols and applied in the preparation of biologically active compounds.
A general method for the synthesis of chalcones based on the Suzuki reaction either between cinnamoyl chlorides and phenylboronic acids or between benzoyl chlorides and phenylvinylboronic acids is described.
Promising Non-cytotoxic Monosubstituted Chalcones to Target Monoamine Oxidase-B
作者:Luca G. Iacovino、Luca Pinzi、Giorgio Facchetti、Beatrice Bortolini、Michael S. Christodoulou、Claudia Binda、Giulio Rastelli、Isabella Rimoldi、Daniele Passarella、Maria Luisa Di Paolo、Lisa Dalla Via
DOI:10.1021/acsmedchemlett.1c00238
日期:2021.7.8
A library of monosubstituted chalcones (1–17) bearing electron-donating and electron-withdrawing groups on both aromatic rings were selected. The cell viability on human tumor cell lines was evaluated first. The compounds unable to induce detectable cytotoxicity (1, 13, and 14) were tested using the monoamine oxidase (MAO) activity assay. Interestingly, they inhibit MAO-B, acting as competitive inhibitors