Highly regioselective ring-opening of aziridines with arenesulfinates on water: a facile access to β-amino/vinyl sulfones
摘要:
We have developed a LiBr catalyzed efficient synthesis of beta-amino sulfones from readily available aziridines and sodium sulfinates in good to excellent yields. The synthetic potential of beta-amino sulfones has also been demonstrated by their facile conversion to the corresponding vinyl sulfones. The use of water as reaction media, atom-economy and isolation of products by simple filtration in the case of solid beta-amino sulfones are certain green virtues of the synthetic protocol. (C) 2012 Elsevier Ltd. All rights reserved.
Complexes of cyclic polyaza chelators with cations of alkaline earth metals for enhanced biological activity
申请人:Winchell S. Harry
公开号:US20050112066A1
公开(公告)日:2005-05-26
Cyclic polyaza chelators that possess high affinity and specificity for first transition series metal cations exhibit an unanticipated improvement in biological activity when administered as complexes with cations of the alkaline earth metals, Ca(II) and Mg(II), most notably Ca(II). By virtue of this improvement, these complexes are particularly effective in the treatment of pathological conditions, including ischemia and ischemia-reperfusion injury.
Neuroprotection and cardioprotection afforded by chelators with high affinity and specificity for cations of first transition series elements
申请人:CONCAT, LTD. a California Limited Partnership
公开号:US20040006055A1
公开(公告)日:2004-01-08
Compounds that demonstrate chelation affinity and selectivity for first transition series elements are administered to patients suffering from such conditions as ischemia, prolonged seizures and trauma to provide neuroprotection, cardioprotection, or both. These compounds when administered form complexes with chelatable iron and copper cations and thereby mitigate the ability of these cations to catalyze Haber-Weiss reactions that form toxic hydroxy free radicals that cause tissue injury. These compounds also form complexes with chelatable zinc cations thereby inhibiting the cytotoxicity associated with excess chelatable zinc.
Compounds with chelation affinity and selectivity for first transition series elements and their use in cosmetics and personal care products, inhibition of metalloenzymes, and inhibition of reperfusion injury
申请人:——
公开号:US20010041170A1
公开(公告)日:2001-11-15
This invention involves the use of a class of compounds with chelation affinity and selectivity for first transition series elements. Application or administration of the free or conjugated compound, or physiological salts of the free or conjugated compound, results in decrease of the bioavailability and/or chemical action of first transition series elements. These characteristics make such compounds useful in cosmetics and personal care products to decrease odor arising from microbial growth on body surfaces and in body cavities, decrease microbial growth on teeth, plaque, and gums that cause tooth decay and gum disease, inhibition of oxidative damage to the skin, inhibition of enzymatic action of metalloenzymes dependent on first transition series elements, and inhibition of reperfusion injury.
Method for inhibiting bacterial or fungal growth using a polyamine derivative as complexing agent
申请人:Chelator LLC
公开号:EP1382332A1
公开(公告)日:2004-01-21
The present invention refers to a method for inhibiting bacterial or fungal growth on a surface, including a human body surface, or in a solution comprising administering to said surface or solution a complexing agent having the formula
wherein said radicals and integers are defined as in the description.
Compounds with chelation affinity and selectivity for first transition series elements and their use
申请人:Chelator LLC
公开号:EP2011501A1
公开(公告)日:2009-01-07
This invention involves the use of a class of compounds with chelation affinity and selectivity for first transition series elements. Application or administration of the free or conjugated compound, or physiological salts of the free or conjugated compound, results in decrease of the bioavailability and/or chemical action of first transition series elements. These characteristics make such compounds useful in cosmetics and personal care products to decrease odor arising from microbial growth on body surfaces and in body cavities, decrease microbial growth on teeth, plaque, and gums that cause tooth decay and gum disease, inhibition of oxidative damage to the skin, inhibition of enzymatic action of metalloenzymes dependent on first transition series elements, and inhibition of reperfusion injury.