Bis-(Coumarin) Compounds With Anti-Inflammatory Activity
申请人:Mercep Mladen
公开号:US20080153872A1
公开(公告)日:2008-06-26
Certain bis-(coumarin) compounds as well as the products of their intramolecular cyclization including pharmaceutically acceptable salts, hydrates, solvates, clathrates, prodrugs, tautomers and stereoisomers thereof are disclosed. Certain processes and intermediates for the preparation of certain bis-(coumarin) compounds, as well as for the use of these compounds as therapeutically active agents in the prophylaxis and treatment of asthma and other inflammatory diseases and conditions in mammals, especially humans are also disclosed.
Simple protic ionic liquid [Et3NH][HSO4] as a proficient catalyst for facile synthesis of biscoumarins
作者:Sandip K. Patil、Deepak V. Awale、Madagonda M. Vadiyar、Suryakant A. Patil、Sagar C. Bhise、Sanjay S. Kolekar
DOI:10.1007/s11164-017-2932-5
日期:2017.10
Abstract We have explored a number of protic ionicliquids (PILs) as a catalyst for the synthesis of biscoumarins by condensation of 4-hydroxycoumarin with an aromatic aldehyde. Methylimidazolium- and triethylammonium-based PILs were synthesized by simple neutralization reaction with protic acids. Triethylammoniumhydrogensulfate [Et3NH][HSO4] was found to be the best among the studied PILs concerning