Novel One-Pot Vicinal Double C-Acylation of Styrenes and Methacrylates by Electroreduction
摘要:
Electroreduction of styrenes or alkyl methacrylates in the presence of aliphatic acid anhydrides or N-acylinnidazoles with an undivided cell equipped with zinc electrodes as the anode and the cathode brought about novel one-pot vicinal double C-acylation to afford the corresponding 1,4-diketones in satisfactory yields.
Prodrugs of guanfacine with amino acids or short peptides, pharmaceutical compositions containing such prodrugs and a method for providing therapeutic benefit in the treatment of ADHD/ODD (attention deficient hyperactivity disorder and oppositional defiance disorder) with guanfacine prodrugs are provided herein. Additionally, methods for minimizing or avoiding the adverse gastrointestinal side effects associated with guanfacine administration, as well as improving the pharmacokinetics of guanfacine are provided herein.
USE OF PRODRUGS TO AVOID GI MEDIATED ADVERSE EVENTS
申请人:Franklin Richard
公开号:US20120202756A1
公开(公告)日:2012-08-09
The present invention relates to prodrugs of a wide variety of drugs and pharmaceutical compositions containing such prodrugs. Methods for minimizing locally mediated (from within the gut lumen) adverse gastrointestinal events associated with the underivatised drug and increasing the sustainment of plasma drug levels with the aforementioned prodrugs are also provided. Thus, the present invention relates to the use of prodrugs of a wide diversity of drugs (other than opioids) to transiently inactivate them and so reduce directly, locally mediated adverse gastrointestinal (GI) side-effects normally evident after administration of the parent compound. Additionally, such prodrugs may confer improved pharmacokinetics.
NOVEL DICARBOXYLIC ACID LINKED AMINO ACID AND PEPTIDE PRODRUGS OF OPIOIDS AND USES THEREOF
申请人:Franklin Richard
公开号:US20100286186A1
公开(公告)日:2010-11-11
The present invention concerns dicarboxylic acid linked amino acid and peptide prodrugs of opioid analgesics and pharmaceutical compositions containing such prodrugs. Methods for providing pain relief, decreasing the adverse GI side effects of the opioid analgesic and increasing the bioavailability of the opioid analgesic with the aforementioned prodrugs are also provided. In one embodiment, prodrugs having the amino acid side chains of valine, leucine, isoleucine and glycine; and mono-, di- and tripeptides thereof are provided.
Novel One-Pot Vicinal Double C-Acylation of Styrenes and Methacrylates by Electroreduction
Electroreduction of styrenes or alkyl methacrylates in the presence of aliphatic acid anhydrides or N-acylinnidazoles with an undivided cell equipped with zinc electrodes as the anode and the cathode brought about novel one-pot vicinal double C-acylation to afford the corresponding 1,4-diketones in satisfactory yields.