摘要:
The invention relates to 2-butyl-5-(methanesulfonamido)benzofuran, its preparation and its use. This compound is a synthesis intermediate, in particular for the preparation of dronedarone.
摘要:
The invention concerns a novel method for preparing a benzofuran or benzothiophene compound by cyclizing an aromatic compound bearing a side-chain comprising at least two carbon atoms, one of the carbon atoms being bound to the benzene cycle by an oxygen or sulphur atom, the other carbon atom is in carboxylic form and a formyl radical in ortho position relative to said chain. The inventive method is characterised in that it consists in cyclizing the latter in the presence of an efficient amount of a carbonate base in a medium comprising a carboxylic acid anhydride and optionally an organic solvent.
摘要:
The invention concerns aromatic tetralcyclic compounds of the retinoid type of general formula (I). The invention also concerns the method for preparing them and the pharmaceutical compositions containing at least one of said compounds.
摘要:
Mint lactone can be prepared by hydrogenating hydroxymenthofurolactone to give the intermediate dihydrohydroxymenthofurolactone with the subsequent elimination of water.
摘要:
The present invention provides a production method of a 5-phthalancarbonitrile compound, which comprises the use of a novel compound of the formula [I] wherein X is chlorine atom, bromine atom or iodine atom, as a key intermediate; intermediate; and the process of preparing intermediates.