摘要:
The invention relates to the racemisation process of the optically active [2-(2-thienyl)ethylamino](2-halogenophenyl)acetamides of general formula (VII) by using basic compounds. The resulting racemic compounds of general formula (VII) can thus be recycled into synthesis of the therapeutically useful compounds of general formula (VI).
摘要:
The invention relates to a novel process for preparation of dronedarone (I) and pharmaceutically acceptable salts thereof where the compound of formula (II) or salt thereof is reacted with a compound of formula L-(CH2)3—CH3 (III), where L is a leaving group, and isolating the obtained product and, if desired, converting it into a pharmaceutically acceptable salt thereof. The invention also relates to some novel intermediary compounds and the preparation thereof.
摘要:
The process according to the invention relates to the preparation of 2-chloromethyl-thiophene of the formula (I). During this process thiophene is chloromethylated in the presence of one or more compounds containing keto group and optionally it is transformed into the compound of the formula (II). Compounds of formula (I) and (II) are intermediates of several pharmaceutically active ingredients.
摘要:
The subject of the present invention is the preparation of the (R)-(−)-2-hydroxy-2-(2-chlorophenyl)acetic acid of the formula (I) by the resolution of the corresponding racemic compound by using the compounds of the general formula (II).
摘要:
The invention relates to a novel process for preparation of dronedarone (I) and pharmaceutically acceptable salts thereof where the compound of formula (II) or salt thereof is reacted with a compound of formula L-(CH2)3—CH3 (III), where L is a leaving group, and isolating the obtained product and, if desired, converting it into a pharmaceutically acceptable salt thereof. The invention also relates to some novel intermediary compounds and the preparation thereof.
摘要:
The invention relates to the racemization process of the optically active [2-(2-thienyl)ethylamino](2-halogenophenyl)acetamides of general formula (VII) by using basic compounds.The resulting racemic compounds of general formula (VII) can thus be recycled into synthesis of the therapeutically useful compounds of general formula (VI).