New dimeric carbazole–benzimidazole mixed ligands for the stabilization of human telomeric G-quadruplex DNA and as telomerase inhibitors. A remarkable influence of the spacer
Synthesis of unique 17β-estradiol homo-dimers, estrogen receptors binding affinity evaluation and cytocidal activity on breast, intestinal and skin cancer cell lines
A rapid and efficient synthesis of a series of C2-symmetric 17beta-estradiol homo-dimers is described. The new molecules are linked at position 17alpha of the steroid nucleus with either an alkyl chain or a polyethylene glycol chain. They are made from estrone in only five chemical steps with an overall yield exceeding 30%. The biological activity of these compounds was evaluated in vitro on estrogen
LOW MOLECULAR WEIGHT POLYETHYLENE GLYCOL DRUG CONJUGATES HAVING IMPROVED DRUG BIOLOGICAL ACTIVITY
申请人:JENKEM TECHNOLOGY CO.,LTD.(TIANJIN)
公开号:US20160082117A1
公开(公告)日:2016-03-24
Provided are polyethylene glycol drug conjugates of general formula (I), (II) or (III) and pharmaceutical compositions and a use thereof. The conjugates are formed by combining low molecular weight polyethylene glycol with 2-4 drug molecules. The conjugates can interact with receptor dimers or polymers, thereby improving the in vivo distribution of the drug, changing the oil and water distribution coefficient, enhancing the pharmacological activity, reducing the blood-brain barrier permeability of the drug, and improving the bioavailability of the drug.
Cationic amphitropic gemini surfactants with hydrophilic oligo(oxyethylene) spacer chains
作者:Michael Dreja
DOI:10.1039/a801448e
日期:——
New gemini diammonium surfactants have been synthesized in which the spacer chain consists of oligo(oxyethylene) units and which exhibit thermotropic liquid crystalline lamellar α and β as well as lyotropic mesophases.