Identification of a Terphenyl Derivative that Blocks the Cell Cycle in the G0−G1 Phase and Induces Differentiation in Leukemia Cells
摘要:
To further explore the SAR of resveratrol-related trans-stilbene derivatives, here we describe the synthesis of (a) a series of 3,5-dimethoxy analogues in which a variety of substituents were introduced at positions 2', 3', 4', and 5' of the stilbene scaffold and (b) a second group of derivatives (2-phenylnaphthalenes and terphenyls) that incorporate a phenyl ring as a bioisosteric replacement of the stilbene alkenyl bridge. We thoroughly characterized all of the new compounds with respect to their apoptosis-inducing activity and their effects on the cell cycle. One of the new derivatives, 13g, behaved differently from the others, as it was able to block the cell cycle in the G(0)-G(1) phase and also to induce differentiation in acute myelogenous leukemia HL60 cells. Compared to resveratrol, the synthetic terphenyl 13g showed a more potent apoptotic and differentiating activity. Moreover, it was active on both multidrug resistance and Bcr-Abl-expressing cells that were resistant to resveratrol.
Identification of a Terphenyl Derivative that Blocks the Cell Cycle in the G0−G1 Phase and Induces Differentiation in Leukemia Cells
摘要:
To further explore the SAR of resveratrol-related trans-stilbene derivatives, here we describe the synthesis of (a) a series of 3,5-dimethoxy analogues in which a variety of substituents were introduced at positions 2', 3', 4', and 5' of the stilbene scaffold and (b) a second group of derivatives (2-phenylnaphthalenes and terphenyls) that incorporate a phenyl ring as a bioisosteric replacement of the stilbene alkenyl bridge. We thoroughly characterized all of the new compounds with respect to their apoptosis-inducing activity and their effects on the cell cycle. One of the new derivatives, 13g, behaved differently from the others, as it was able to block the cell cycle in the G(0)-G(1) phase and also to induce differentiation in acute myelogenous leukemia HL60 cells. Compared to resveratrol, the synthetic terphenyl 13g showed a more potent apoptotic and differentiating activity. Moreover, it was active on both multidrug resistance and Bcr-Abl-expressing cells that were resistant to resveratrol.
crystallographic analysis also revealed that there is no close π–π stacking between neighboring π-conjugated skeletons. DFT calculations suggest a radicalcation mechanism in the presence of FeCl3 while an areniumion pathway for the DDQ/MeSO3H mediated Scholl reaction, which can well explain the selective formation of hexagons and octagons under different conditions. The obtained compounds showed tunable
The disclosure is directed to: (a) phosphacycle ligands; (b) methods of using such phosphacycle ligands in bond forming reactions; and (c) methods of preparing phosphacycle ligands.
The disclosure is directed to: (a) phosphacycle ligands; (b) catalyst compositions comprising phosphacycle ligands; and (c) methods of using such phosphacycle ligands and catalyst compositions in bond forming reactions.
Heptagon/Octagon‐Fused Diporphyrins or Spiro‐Pentagon‐Bridged Dichlorin from
<i>p</i>
‐Terphenylene‐Bridged Diporphyrin
作者:Peng Lin、Shugang Xiong、Yutao Rao、Ling Xu、Mingbo Zhou、Bangshao Yin、Atsuhiro Osuka、Jianxin Song
DOI:10.1002/asia.202300018
日期:2023.3.14
AbstractIntramolecular fusion reactions of a p‐terphenylene‐bridged NiII porphyrin dimer gave different products, depending upon reaction conditions. Oxidation with Fe(OTf)3 provided syn‐ and anti‐doubly heptagon‐fused NiII porphyrin dimers showing enlarged π‐electronic networks, probably via a radical mechanism, while treatment with methanesulfonic acid provided a spiro‐pentagon‐bridged NiII chlorin dimer via acid‐catalyzed Friedel‐Crafts type cyclization. Further, a doubly octagon‐fused NiII porphyrin dimer was synthesized via a sequence of double meso‐formylation, reduction to corresponding diol, and BF3‐catalyzed cyclization.