| 摘要 |
Antihistaminic compounds of formula (I) wherein: X is an aliphati c hydrocabonylene linker of preferably C2-C10, such as ethylene or caboxyethylene, wherein the only bond rotation in the linker is provided by an ethylene radical and X is preferably ethylene or carboxyethylene; and Y is a carbocyclic group, a heterocyclic group, a carbocyclic arenyl, a heterocyclic arenyl group, a polycyclic hydrocarbonyl, a heteropolycyclic group or theophylline; and wherein Y can be optionally substituted as defined. |
