The invention provides a process for preparing a 2,3,4,5-tetrahydro[1,4]benzothiazepine of formula:
by reacting a [2-(acylaminoethyl)thio]arene of formula
with an aldehyde or a multimer thereof, and with an acid. The invention also provides for first reacting the [2-(acylaminoethyl)thio]arene with the aldehyde or multimer thereof and a base to form an [N-hydroxymethyl-2-[acylaminoethyl)thio]arene of formula
then treating the [N-hydroxymethyl-2-(acylaminoethyl)thio]arene with the acid to form the 2,3,4,5-tetrahydro[1,4]benzothiazepine.
本发明提供了一种制备式为2,3,4,5-四氢[1,4]
苯并噻吩的方法,该方法通过将式为[2-(酰胺基乙基)
硫代]
芳烃与醛或其多聚物以及酸反应来实现。本发明还提供了一种先将[2-(酰胺基乙基)
硫代]
芳烃与醛或其多聚物和碱反应以形成式为[N-羟甲基-2-(酰胺基乙基)
硫代]
芳烃,然后用酸处理[N-羟甲基-2-(酰胺基乙基)
硫代]
芳烃以形成2,3,4,5-四氢[1,4]
苯并噻吩。