2- and 6-Methyl-1,4-naphthoquinone derivatives as potential bioreductive alkylating agents
作者:Ippolito Antonini、Tai Shun Lin、Lucille A. Cosby、Yao Ren Dai、Alan C. Sartorelli
DOI:10.1021/jm00348a023
日期:1982.6
tumor-bearing mice. Among the most activeagents were the mesylates, tosylates, and N-(chloroethyl)carbamates of 2- and 6-methyl-1,4-naphthoquinone. That bioreductive activation to a quinone methide might be involved in the mechanism of action of these agents was shown by the finding that compounds with the best leaving groups were the most efficacious as antineoplastic agents.
efficient, regioselectivechlorination of coumarins using Earth-abundant and cost-effective CuCl2 under visible light irradiation is reported. A key feature of this protocol is the photocatalytic dissociation of the copper(II) complex in acetonitrile through ligand-to-metal charge transfer (LMCT) to give the chlorine atom which then selectively chlorinates the coumarin. This method can chlorinate a broad
报道了在可见光照射下使用地球丰富且具有成本效益的 CuCl 2对香豆素进行有效的区域选择性氯化。该协议的一个关键特征是通过配体到金属电荷转移 (LMCT) 将乙腈中的铜 ( II ) 配合物光催化解离,从而产生氯原子,然后选择性地氯化香豆素。该方法可以用吸电子或给电子取代基对范围广泛的香豆素进行氯化,以区域选择性地提供 3-氯香豆素,并以良好至优异的产率进一步扩展到其他缺电子杂环和烯烃,例如黄酮、8-甲氧基补骨脂素和萘醌。
ANTONINI, I.;LIN, TAI-SHUN;COSBY, L. A.;DAI, YAO-REN;SARTORELLI, A. C., J. MED. CHEM., 1982, 25, N 6, 730-735
作者:ANTONINI, I.、LIN, TAI-SHUN、COSBY, L. A.、DAI, YAO-REN、SARTORELLI, A. C.
DOI:——
日期:——
Composition for Inhibiting or Preventing the Formation of a Biofilm
申请人:Rossel Bart
公开号:US20070258913A1
公开(公告)日:2007-11-08
Compounds for inhibiting and/or preventing the formation of a biofilm are disclosed. The compounds are an anthraquinone and/or a naphtoquinone, stereoisomeric forms, racemic mixtures, metabolites, esters or salts thereof, or mixtures thereof, and/or at least one plant extract including the compound or active fraction thereof. Compositions containing the compounds such as oral health products and methods of using the products in a method to prevent or inhibit biofilm formation are also disclosed. Preferred compositions include emodin and/or plant extracts from
Rheum
sp.