Photoinduced direct 4-pyridination of C(sp3)–H Bonds
作者:Tamaki Hoshikawa、Masayuki Inoue
DOI:10.1039/c3sc51080h
日期:——
Direct substitution of hydrogen in C(sp3)âH bonds by 4-pyridine was achieved by employing benzophenone and 4-cyanopyridine in aqueous acetonitrile under photo-irradiating conditions. This simple and mild 4-pyridination proceeds in a highly chemoselective manner especially at benzylic C(sp3)âH bonds without affecting polar functional groups, and enables intermolecular formation of sterically hindered bonds between alkylaromatics and 4-pyridine. The present methodology thus serves as a powerful tool for construction of biologically active and functional molecules with 4-pyridine substructures.
reacts with tosyl cyanide to afford the corresponding nitrile in a highly efficient manner. The present methodology is widely applicable to various starting materials including ethers, alcohols, amine derivatives, alkanes, and alkylbenzenes. This newly developed C–H cyanation protocol provides a powerful tool for selective one-carbon elongation for the construction of architecturally complex molecules
2-carbamide-4-phenylthiazole derivatives, preparation thereof and therapeutic use thereof
申请人:Casellas Pierre
公开号:US20070179126A1
公开(公告)日:2007-08-02
The disclosure concerns 2-carbamide-4-phenylthiazole derivatives of general formula (I). The disclosure also concerns pharmaceutical compositions containing a compound of general formula (I) and to processes for preparing and methods of using compounds of general formula (I).
2-Acylamino-4-phenylthiazole derivatives, preparation thereof and therapeutic application thereof
申请人:Carayon Pierre
公开号:US20060135575A1
公开(公告)日:2006-06-22
The invention relates to 2-acylamino-4-phenylthiazole derivatives of general formula (I):
pharmaceutically acceptable acid-addition salts thereof, hydrates or solvates of such derivatives or such pharmaceutically acceptable acid addition salts, intermediates thereto, processes for the preparation thereof, and therapeutic application thereof.
Polymer Conjugate Of Folic Acid Or Folic Acid Derivative
申请人:Nakanishi Takeshi
公开号:US20110294980A1
公开(公告)日:2011-12-01
Disclosed is a polymer conjugate of folic acid or a folic acid derivative, wherein an amide bond is not used. The compound has chemical stability and adequate drug release rate in the living organism. Specifically disclosed is a polymer conjugate of folic acid or a folic acid derivative, wherein a substituent represented by formula (I) is bonded to a carboxy group of a block copolymer which is composed of a polyethylene glycol and a polymer having a carboxy group in a side chain, or a pharmacologically acceptable salt thereof.
[In the formula, A represents a monocyclic or fused aromatic group; G represents an optionally substituted (C1-C6) alkylene group; Y represents a hydrogen atom or a substituent; and E represents a residue of folic acid or a folic acid derivative.]