137384-34-0Relevant academic research and scientific papers
Imidazopyridazines, their production and use
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, (2008/06/13)
An imidazo [1,2-b]pyridazine compound of the formula (I): STR1 wherein R1 is a halogen atom or a lower alkyl group optionally having substituent(s), R2 and R3 are, independently, a hydrogen atom, a lower alkyl group optionally having substituent(s), a cycloalkyl group or a phenyl group optionally having substituent(s) or R2 and R3 together with the adjacent nitrogen atom to which they bond may form a heterolcyclic ring optionally having substituent(s), X is an oxygen atom or S(O)k (k is zero to two), a group -- A-- is a bivalent three to seven membered homocyclic or heterocyclic group optionally having substituent(s), m1 and m2 each is an integer of 0 to 4 and n is an integer of 0 or 1; or its salt, which is useful as antiasthmatics.
