Intermediates for pyrazolopyridazine derivatives

Details Intermediates for pyrazolopyridazine derivatives Intermediates for pyrazolopyridazine derivatives

1983-04-25

1984-12-11

Coughlan, Jr., Paul M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D23704

Patent

active

044879296

ABSTRACT:
Intermediates of the formula ##STR1## wherein A is methylene, ethylene or propylene which may be substituted by lower alkyl, Y is halogen, R.sup.3 is hydrogen, lower alkyl, aryl or aryl-(lower alkyl)--, R.sup.20 l is lower alkoxy and R.sup.42 is hydrogen, lower alkyl, aryl or aryl-(lower alkyl) or a group of the formula --A--Y in which A and Y are as above, are described.

REFERENCES:
patent: 4307094 (1981-12-01), Hassall et al.
patent: 4341781 (1982-07-01), Hassall et al.
Molnar et al, Pharma. Acta. Helvetica, vol. 39 (1964) pp. 155-161.
Derwent Abstract No. 17676D for European Pat. No. 24,309.
Derwent Abstract No. 25836D for European Pat. No. 25,941.

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