N-Aryltriazole ribonucleosides with potent antiproliferative activity against drug-resistant pancreatic cancer
摘要:
Novel N-aryltriazole nucleosides were synthesized via Cu-mediated C-N cross-coupling reaction starting with 3-aminotriazole ribonucleoside and various boronic acids. Two of them exhibited potent apoptosis-related antiproliferative activity against the drug-resistant pancreatic cancer cell line MiaPaCa-2, with an increased potency compared to gemcitabine, the reference treatment for pancreatic cancer. A preliminary SAR study suggests that the appended N-aryl moiety and the substituent at its para-position, as well as the ribose sugar component, contribute considerably to the observed antiproliferative activity. (C) 2010 Elsevier Ltd. All rights reserved.
N-Aryltriazole ribonucleosides with potent antiproliferative activity against drug-resistant pancreatic cancer
摘要:
Novel N-aryltriazole nucleosides were synthesized via Cu-mediated C-N cross-coupling reaction starting with 3-aminotriazole ribonucleoside and various boronic acids. Two of them exhibited potent apoptosis-related antiproliferative activity against the drug-resistant pancreatic cancer cell line MiaPaCa-2, with an increased potency compared to gemcitabine, the reference treatment for pancreatic cancer. A preliminary SAR study suggests that the appended N-aryl moiety and the substituent at its para-position, as well as the ribose sugar component, contribute considerably to the observed antiproliferative activity. (C) 2010 Elsevier Ltd. All rights reserved.
An Efficient Mixed-Ligand Pd Catalytic System to Promote CN Coupling for the Synthesis of N-Arylaminotriazole Nucleosides
作者:Yuting Fan、Yi Xia、Jingjie Tang、Fabio Ziarelli、Fanqi Qu、Palma Rocchi、Juan L. Iovanna、Ling Peng
DOI:10.1002/chem.201103918
日期:2012.2.20
Make it unique! A mixed‐ligand system of Pd/Synphos/Xantphos promotes effective CNcoupling in the synthesis of various N‐arylaminotriazole and N‐arylaminopurine nucleoside analogues. This catalyticsystem is strikingly powerful and efficient, allowing for unparalleled substrate scope and high product yields as well as promotion of CCl bond activation for CNcoupling (see scheme).
Pd(dba)<sub>2</sub> vs Pd<sub>2</sub>(dba)<sub>3</sub>: An in-Depth Comparison of Catalytic Reactivity and Mechanism via Mixed-Ligand Promoted C–N and C–S Coupling Reactions
With the help of mixed ligand catalytic systems, the analogous mechanisms behind the cognate performance by Pd(dba)2 and Pd2(dba)3 in catalyzing C-N and C-S coupling reactions were demonstrated. This information is instrumental in organic synthesis requiring Pd-catalyzed cross-coupling reactions and may also be valuable to other Pd-catalyzed transformations.
N-Aryltriazole ribonucleosides with potent antiproliferative activity against drug-resistant pancreatic cancer
作者:Yang Liu、Yi Xia、Yuting Fan、Alain Maggiani、Palma Rocchi、Fanqi Qu、Juan L. Iovanna、Ling Peng
DOI:10.1016/j.bmcl.2010.02.104
日期:2010.4
Novel N-aryltriazole nucleosides were synthesized via Cu-mediated C-N cross-coupling reaction starting with 3-aminotriazole ribonucleoside and various boronic acids. Two of them exhibited potent apoptosis-related antiproliferative activity against the drug-resistant pancreatic cancer cell line MiaPaCa-2, with an increased potency compared to gemcitabine, the reference treatment for pancreatic cancer. A preliminary SAR study suggests that the appended N-aryl moiety and the substituent at its para-position, as well as the ribose sugar component, contribute considerably to the observed antiproliferative activity. (C) 2010 Elsevier Ltd. All rights reserved.