Simplified resiniferatoxin analogues as vanilloid receptor agonist showing excellent analgesic activity and the pharmaceutical compositions containing the same

The present invention is related to new vanilloid analogues containing resiniferatoxin pharmacophores, pharmaceutical compositions that have such analogues, and their uses as vanilloid receptor agonists and potent analgesics. The present invention provides a pharmaceutical composition for preventing, alleviating or treating pain, acute pain, chronic pain, neuropathic pain, post-operative pain, migraine, arthralgia, neutopathies, nerve injury, diabetic neuropathy, neurodegeneration, neurotic skin disorder, stroke, urinary bladder hypersensitiveness, irritable bowel syndrome, a respiratory disorder such as asthma or chronic obstructive pulmonary disease, irritation of skin, eye or mucous membrane, fervescence, stomach-duodenal ulcer, inflammatory bowel disease, inflammatory disease or urgent urinary incontinence.