NOVEL p-TERPHENYL COMPOUNDS

摘要

Selective IgE production inhibitors which contain substances inhibiting the production of IgE in the process of the differentiation of matured B cells into antibody-producing cells and the production of the antibody thereby while not or scarcely inhibiting the production of IgG, IgM and/or IgA to be produced simultaneously with IgE; compounds represented by general formula (I); a process for producing the same; and drugs containing the same. In said formula R<1> to R<13> represent each hydrogen, halogeno, lower alkyl, lower alkoxy, etc.; X represents O-, -CH2-, -NR<14>- or -S(O)p-; and Y represents lower alkyl or lower alkenyl.