Chiral thiophene dioxides and thiophene S,N-ylides as dienes for asymmetric diels-aldlr application
作者:Jan L.M. Dillen、Otto Meth-Cohn、Clive Moore、Petrus H. van Rooyen
DOI:10.1016/s0040-4020(01)85944-5
日期:1988.1
2-Menthyltrihalothiophene S,S-dioxides are efficient asymmetric dienes in Diels-Alder reactions with dienophiles to give regio- and stereoisomerically pure adducts. Thus styrene, allyl alcohol, methyl acrylate and acrylamide give solely one adduct while flat dienophiles such as indene and acenaphthylene give two diastereomers. Analogous 1- and 3- chirally substituted thiophenes are of little value in
Ethyl azidoformate is shown to attack a range of thiophenes at sulphur giving transient S,N-ylides which can be trapped with acenaphthylene as [4+2] adducts; thiophene yields self-trapped products also.
THIOPHENECARBOXAMIDE DERIVATIVES AS EP4 RECEPTOR LIGANDS
申请人:Blouin Marc
公开号:US20090247596A1
公开(公告)日:2009-10-01
The invention is directed to thiophenecarboxamide derivatives of formulae I and II as EP4 receptor ligands, antagonists or agonists, useful for the treatment of EP4 mediated diseases or conditions, such as acute and chronic pain, osteoarthritis, rheumatoid arthritis, cancer and glaucoma. Pharmaceutical compositions and methods of use are also included. (Formulas I and II).
Thiophenecarboxamide derivatives as EP4 receptor ligands
申请人:Blouin Marc
公开号:US08969394B2
公开(公告)日:2015-03-03
The invention is directed to thiophenecarboxamide derivatives of formulae I and II as EP4 receptor ligands, antagonists or agonists, useful for the treatment of EP4 mediated diseases or conditions, such as acute and chronic pain, osteoarthritis, rheumatoid arthritis, cancer and glaucoma. Pharmaceutical compositions and methods of use are also included. (Formulas I and II).