DNA Oxidative Damage by Terpene Catechols as Analogues of Natural Terpene Quinone Methide Precursors in the Presence of Cu(II) and/or NADH
作者:Miguel A. Zuniga、Jifeng Dai、Mark P. Wehunt、Qibing Zhou
DOI:10.1021/tx060021s
日期:2006.6.1
Natural terpene quinonemethides (QM) and their derivatives have been investigated as therapeutics due to their broad antifungal, antibacterial, and antitumor activities. Recently, we reported that a terpene QM was formed from the catechol precursor through the disproportionation of Cu(II)/(I) redox cycle, and extensive DNA damage was observed throughout the oxidation process. In this paper, we investigate
Neutral Lithium Triflate (LiOTf) Efficiently Catalyzes Chemoselective Preparations of Cyclic and Acyclic Dithioacetals from Carbonyl Compounds, Acylals, and O,O-Cyclic and Open-Chain Acetals under Solvent-Free Conditions
作者:Habib Firouzabadi、Shahram Eslami、Babak Karimi
DOI:10.1246/bcsj.74.2401
日期:2001.12
An efficient and chemoselective preparation of cyclic and acyclic thioacetals from carbonyl compounds, cyclic and acyclic acetals and acylals in the presence of catalytic amounts of neutral lithium triflate and thiols undersolvent-freeconditions is described.