Stereoselective synthesis of (Z)-trifluoromethyl enamines and their Lewis acid-mediated conversion into (E)-isomers
摘要:
(Z)-beta-Trifluoromethyl enamines were prepared in high yield stereoselectively by reaction of 2-bromo-3,3,3-trifluoropropene with N-alkyl toluenesulfonamides and potassium t-butoxide in one pot via Michael addition and elimination processes. The (Z)-beta-trifluoromethyl enamines could be converted to the corresponding thermodynamically stable (E)-isomers promoted by Lewis acid catalysts at room temperature or thermal isomerization. (C) 2002 Elsevier Science Ltd. All rights reserved.
SUBSTITUTED SULPHONAMIDES, PROCESS FOR THEIR PREPARATION, PHARMACEUTICAL COMPOSITION COMPRISING THEREOF AND THEIR USE
申请人:Gregan Fridrich
公开号:US20100125076A1
公开(公告)日:2010-05-20
Substituted sulphonamides having the general formula (I) and salts, hydrates and solvates thereof were prepared and described, wherein R
1
is CO or SO
2
and R
2
is NH or O and where R represents linear or cyclic aliphatic chain and n represents number of linking aliphatic chain carbons (n can be 0, 1, 2 or 3), which are useful in the manufacture of the medicaments due to the carboanhydrase inhibition. These compounds are prepared by nucleophilic reaction of an amine with 4-sulfamoylbenzenesulphonyl chloride in the presence of triethylamine excess in tetrahydrofurane or in ether at temperature 0 to 20° C. The compounds show an antiglaucomatic activity.
Compounds of the present invention, and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTR”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention.
Compounds of the present invention, and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTR”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention.
Compounds of the present invention, and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTR”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention.
Compounds of the present invention, and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTC”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention.
本发明的化合物及其药学上可接受的组合物可用作 ATP 结合盒("ABC")转运体或其片段(包括囊性纤维化跨膜传导调节剂("CFTC"))的调节剂。本发明还涉及使用本发明化合物治疗 ABC 转运体介导的疾病的方法。