Design, synthesis and anticancer activity of novel dihydrobenzofuro[4,5-b][1,8]naphthyridin-6-one derivatives
摘要:
On the basis of the chemical structures of psorospermin with a xanthone template and acronycine derivatives with an acridone template, rac-1 and rac-2 constructed on an 1,2-dihydrobenzofuro[4,5-b] [1,8] naphthyridin-6(11H)-one scaffold were designed and synthesized as potential anticancer agents. Their anticancer activities were evaluated against five human cancer cell lines. Rac-2 showed similar anticancer activity to doxorubicin and rac-1 exhibited even higher anticancer activity against LNCaP (IC50 = 0.14 mu M), DU145 ( IC50 = 0.15 mu M), PC3 ( IC50 = 0.30 mu M) and MCF-7 ( IC50 = 0.26 mu M) cancer lines than doxorubicin and rac-2. Also, rac-1 revealed very potent anticancer activity ( IC50 = 0.15 mu M) against MCF-7/ADR cell (doxorubicin-resistant breast cancer cell) lines and induced G2/M phase arrest of the cell cycle in MCF-7/ADR cells. (C) 2011 Elsevier Ltd. All rights reserved.
natural products have been identified as 5-LO inhibitors, with some also being dual 5-LO/mPGES-1 inhibitors. Here, some prenylated acetophenone dimers from Acronychia pedunculata have been identified for their dual inhibitorypotency toward 5-LO and mPGES-1. To gain insight into the SAR of this family of natural products, the synthesis and biological evaluation of analogues are presented. The results show
High Diversity on Simple Substrates: 1,4-Dihalo-2-butenes and Other Difunctionalized Allylic Halides for Copper-Catalyzed SN2′ Reactions
作者:Caroline A. Falciola、Alexandre Alexakis
DOI:10.1002/chem.200801309
日期:——
Enantioselective allylic alkylation with an organomagnesium reagent catalyzed by copper thiophene carboxylate (CuTC) was carried out on difunctionalized substrates, such as commercially available 1,4-dichloro-2-butene and 1,4-dibromo-2-butene, and on similar compounds of higher substitution pattern of the olefin for the formation of all-carbon chiral quaternary centers. The high regioselectivity obtained
Formal [5+1] annulation reactions of dielectrophilic peroxides: facile access to functionalized dihydropyrans
作者:Chen Zhong、Qi Yin、Yukun Zhao、Qinfeng Li、Lin Hu
DOI:10.1039/d0cc05565d
日期:——
A general [5+1] annulation reaction, which utilized 4-bromo- or 4-mesyloxy-but-2-enyl peroxides as unique five-atom bielectrophilic synthons to participate in the C–C and the subsequent umpolung C–O bond-forming reactions with C1 nucleophiles, has been developed for the facilesynthesis of 2,2-disubstituted dihydropyrans in high yields under mild basic conditions. The dihydropyrans, which are readily
β- and γ-Disubstituted Olefins: Substrates for Copper-Catalyzed Asymmetric Allylic Substitution
作者:Caroline A. Falciola、Karine Tissot-Croset、Hugo Reyneri、Alexandre Alexakis
DOI:10.1002/adsc.200800086
日期:2008.5.5
The copper-catalyzed asymmetric allylic alkylation has shown through many examples that it is a powerful means to generate stereogenic centers with mono β- and γ-substituted olefinic substrates. However, little has been reported about more substituted olefinic patterns, such as β-disubstituted allylic electrophiles. In this paper, we show that a simple procedure using easily accessible Grignard reagents
Synthesis based on cyclohexadienes. Part 35: Synthesis of some polyquinane derivatives
作者:P. John Biju、M. S. Laxmisha、G. S. R. Subba Rao
DOI:10.1039/b003548n
日期:——
A new strategy for the synthesis of a [4.3.3]propellane derivative and an angular triquinane is described starting from the tetracyclic compounds 8 and 15. The synthesis of the [4.3.3]propellane involved a radical cyclisation and a Beckmann fragmentation as the key steps. The angular triquinane was synthesised employing an oxidative cleavage of the tetracyclic system. A novel Wilkinson’s catalyst-mediated