The purpose of the present invention provides the neotrehalose compound to what adenylate A3 receptor tool high-affinity in what. The trehalose series of compounds of the present invention is with general formula (1) signifier, it may be assumed that[in formula, X and X ' system indicate hydrogen atom etc., and Y and Y ' system each independently represent hydrogen atom etc., R1 and R2 system respectively indicates C1-C6 alkyl, and R3 and R4 system respectively indicates C3-C6 alkyl]. Also, the seaweed sugar compounds of the present invention have very high compatibility to what adenylate A3 receptor. 本發明之目的在於提供對於腺苷酸A3受體具高親和性之新海藻糖化合物。本發明之海藻糖化合物係以通式(1)表示者，即：[式中，X及X’係表示氫原子等，Y及Y’係各自獨立地表示氫原子等，R1及R2係各自表示C1-C6烷基，而R3及R4係各自表示C3-C6烷基]。又，本發明之海藻糖化合物對於腺苷酸A3受體具非常高之親和性。
