FIELD : medicine; pharmaceuticals.SUBSTANCE : present invention relates to a compound of formula (1) applicable in medicine and pharmaceutics, compositions and products based thereon, a method of treating using it : (1).Disclosed is novel compound (1aS, 1bS, 2S, 4S, 5aR, 6S, 6aS)-1a-(hydroxymethyl)-4-methoxy-2-(((2S, 3R, 4S, 5S, 6R)-3, 4, 5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)octahydrohydroxeno[2' , 3' : 4, 5]cyclopenta[1, 2-c]pyran-6-yl-4-hydroxybenzoate, effective for prevention or alleviation of allergic disease, inflammatory disease, asthma or chronic obstructive pulmonary disease, a pharmaceutical composition based thereon for producing medicinal agents, as well as a functional food product and a therapeutically effective food product containing a therapeutically effective amount of the compound of claim 1.EFFECT : treating or preventing an allergic disease, an inflammatory disease, asthma or chronic obstructive pulmonary disease.6 cl, 6 ex, 9 tbl, 5 dwg