FIELD: chemistry.
SUBSTANCE: invention relates to a compound of general formula
and a compound of general formula
,
where W is chlorine or fluorine, R1 is phenyl, optionally substituted with one or more halogen substitutes; and R4 is C1-C6alkyl, or pharmaceutically acceptable salts of said compounds. The invention also relates to a method of producing a compound of formula (II), use of compounds I and II to produce a drub for treating or preventing diseases such as asthma, allergic rhinitis and atopic dermatitis. Also described is a method of treating said diseases, as well as a pharmaceutical composition used to treat allergic diseases such as asthma, allergic rhinitis and atopic dermatitis.
EFFECT: novel compounds which can be used in treating allergic diseases such as asthma, allergic rhinitis and atopic dermatitis are obtained and described.
15 cl, 6 ex, 3 tbl
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