AMINO ACID DERIVATIVES AND DRUGS CONTAINING THE SAME AS THE ACTIVE INGREDIENT

摘要

The present invention relates to the compounds of the formula (I) and salts thereof (all the symbols are the same meanings as described in the specification). <CHEM> The compounds of the formula (I) possess inhibitory activity of N-type calcium channel, so they are useful as drug for prevention and/or treatment of cerebral infarct, transient ischemic attack, encephalomyelopathy after cardiac operation, spinal angiopathy, hypertension with stress, neurosis, epilepsy, asthma and pollakiuria etc. or agent for the treatment of pain.