The invention relates to compounds of formula (I)whereinR1represents aryl, which is unsubstituted, or mono-, di-, or tri-substituted wherein the substituents are independently selected from the group consisting of (C1-4)alkyl, (C1-4)alkoxy, halogen, and trifluoromethyl；R2represents hydrogen, or-C O-R2l；R21represents (C1-5)alkyl, (C1-3)fluoroalkyl, or (C3-6)cycloalkyl；mrepresents the integer 2, or 3；prepresents the integer 2 or 3； andR3represents hydrogen, or (C1-5)alkyl； and pharmaceutically acceptable salts of such compounds.These compounds are useful as calcium channel blockers.本發明係關於一種式(I)化合物：其中：R1表示未經取代或者經單取代、二取代或三取代之芳基，其中該等取代基係獨立地選自由(C1-4)烷基、(C1-4)烷氧基、鹵素及三氟甲基組成之群；R2表示氫或-CO-R21；R21表示(C1-5)烷基、(C1-3)氟烷基或(C3-6)環烷基；m表示整數2或3；p表示整數2或3；且R3表示氫或(C1-5)烷基；及該等化合物的醫藥學上可接受之鹽。此等化合物適用作鈣通道阻斷劑。
