The new 1-alkyl-4-(10-oxo or -hydroxy-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-piperidine compounds are prepared from the corresponding 10-desoxy compounds having a double bond at the 10,11-position by a process involving bromination, dehydrobomination of the resulting dibromo compound, followed by enamine formation and hydrolysis to give the desired 10-oxo compound. The compounds prepared in this manner are active as antihistamines and as appetite stimulants.
新的1-烷基-4-(10-氧代或-羟基-
10,11-二氢-5H-二苯并[a,d]环庚烯-5-亚基)-
哌啶化合物是通过以下过程制备的:从具有10,11-位置双键的相应10-去氧化合物开始,经
溴化、去
溴反应形成的双
溴化合物,然后进行恩酰胺形成和
水解反应,最终得到所需的10-氧代化合物。以这种方式制备的化合物具有
抗组胺药和食欲刺激剂的活性。