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4- (2¡¯,4¡¯-dinitrophenyl) -2,6-dimethyl-3,5-dicarbomethoxy
1,4-dihydropyridine
After heating for  several hours 9 g. 2,4-dinitrobenzalde hyde,  12  cc.   acetoacetic  acid   methyl  ester  and    15  c ammonia, there are  obtained pale brown crystals of  M P
202¡ã   C.  to  205¡ã C.
        In  an  analogous manner there was  obtained: from 2£¬4-
dinitrobenzaldehyde,  acetoacetic acid  ethyl ester and   am monia,  4- (2¡¯,4¡¯-dinitrophenyl) -2,6-dimethyl-3,5-dicarbeth oxy-1,4-dihydropyridine of  M.P.   174¡ã  C.  to  176¡ã  C.
Fharmacology.¡ªThe   following  pharmacological   data
  represents  specific   test   results  of   4-(2¡¯-nitrophenyl)-2 6
dimethyl-3,5-dicarbomethoxy-1,4-dihydropyridine (II) pro duced  according  to  the   process  described in  Example  I or  4-(4¡¯-aminophenyl) -2,6-dimethyl-3,5-dicarbethoxy 1£¬4- dihydropyridine (I)  produced according to  the  process ot
Example 4.  Other specific   compounds of  the  present   invention  which were  tested  gave   essentially the   same   re sults   and   these  two   compounds  are,   therefore,  used  as illustrative of  the  various  species specifically disclosed  in the  generic invention as a whole.

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