The present invention relates to unique acylated flavonoid tetraglycosides identified from Chin-shin oolong tea, tentatively named teaghrelin-1 and teaghrelin-2. These plant-derived acylated flavonol tetraglycosides have potential to develop as ghrelin receptor agonist for therapeutic application of several disease regulated by ghrelin receptor.本發明係關於一種分離自青心烏龍茶之獨特的醯化黃酮醇配醣體(acylated flavonol tetraglycosides)化合物,命名為”茶肌素-1(Teaghrelin-1)”與”茶肌素-2(Teaghrelin-2)”。本發明亦關於該化合物用於做為飢餓素受體促效劑,及用於製備供治療與飢餓素受體調控相關之疾病的醫藥品之用途。