Tocopherol long chain fatty alcohols decrease the production of TNF-α and NO radicals by activated microglial cells
摘要:
The synthesis of a series of Tocopherol long chain Fatty Alcohols (TEA) and their biological activities on the modulation of microglial activation are described. Specifically, the 2-(12-hydroxy-dodecyl)-2,5,7,8-tetramethyl-chroman-6-ol, the TEA bearing 12 carbon atoms on the side chain (n = 12), shows the most potent inhibition of secretion on nitric oxide (NO) and tumour necrosis factor-alpha (TNF-alpha) by lipopolysaccharide (LPS)-activated microglia. (C) 2004 Elsevier Ltd. All rights reserved.
Regio- and Chemoselective One-Step
3-O-Alkylenation of Unprotected Ascorbic Acid Using ω-Iodoalkanols
作者:Bang Luu、Thierry Muller、Paul Heuschling
DOI:10.1055/s-0028-1087662
日期:——
A regio- and chemoselective alkylenation employing unprotected ascorbic acid and a series of unprotected iodoalkanols in the presence of sodium hydrogen carbonate in dimethyl sulfoxide is described. This atom economic high yielding procedure delivers the corresponding 3-O-alkylene ethers in a single step without prior protection. Specific 3-O-etherification was also observed with unprotected 16-iodohexadecanoic acid and with 2-(10-iododecyl)isoindole-1,3-dione. Furthermore, an 2-O-alkylene derivative was obtained when 3-O-benzyl ascorbic acid was reacted with unprotected 10-iododecanol under slightly modified conditions. Finally, the antioxidative activity of all compounds was determined and compared to vitamin C and E.
DRUG DELIVERY FROM IMPLANTS USING SELF-ASSEMBLED MONOLAYERS-THERAPEUTIC SAMS
申请人:Agrawal C. Mauli
公开号:US20090123516A1
公开(公告)日:2009-05-14
Disclosed are medical devices comprising one or more surfaces, one or more SAM molecules attached to the one or more surfaces of the medical device, and one or more therapeutic agents attached to the one or more self-assembled monolayer molecules. Also disclosed are medical devices comprising one or more surfaces, one or more self-assembled monolayer molecules attached to the one or more surfaces of the medical device, one or more linkers comprising a first functional group and a second functional group, the first functional group attached to the self-assembled monolayer molecule and a therapeutic agent attached to the second functional group. The therapeutic agent may be attached to the SAM molecule via a linker. The present invention also concerns methods of administering a therapeutic agent to a subject, comprising contacting the subject with one of the medical devices set forth herein.
Chemoenzymatic macrocycle synthesis using resorcylic acid lactone thioesterase domains
作者:Graham W. Heberlig、Jesse T. C. Brown、Ryan D. Simard、Monica Wirz、Wei Zhang、Meng Wang、Leah I. Susser、Mark E. Horsman、Christopher N. Boddy
DOI:10.1039/c8ob01512k
日期:——
discovery via the native macrocycle forming biosynthetic mechanism. Herein we demonstrate that the thioesterase domains (TEs) responsible for macrocyclization of resorcylicacidlactones are promising catalysts for the chemoenzymatic synthesis of 12- to 18-member ring macrolactones and macrolactams. The TE domains responsible for zearalenone and radicicol biosynthesis successfully generate resorcylate-like
The synthesis of a series of Tocopherol long chain Fatty Alcohols (TEA) and their biological activities on the modulation of microglial activation are described. Specifically, the 2-(12-hydroxy-dodecyl)-2,5,7,8-tetramethyl-chroman-6-ol, the TEA bearing 12 carbon atoms on the side chain (n = 12), shows the most potent inhibition of secretion on nitric oxide (NO) and tumour necrosis factor-alpha (TNF-alpha) by lipopolysaccharide (LPS)-activated microglia. (C) 2004 Elsevier Ltd. All rights reserved.