申请人:Warner-Lambert Company
公开号:US03961057A1
公开(公告)日:1976-06-01
Substituted benzopyrano[3,4-c]pyridines having the following structural formula are disclosed: ##SPC1## In the above formula, R.sub.1 and R.sub.2 are hydrogen, a hydroxyl group or a lower alkoxyl group of from 1 to 6 carbon atoms; R.sub.3 is hydrogen or a lower alkyl group of from 1 to 6 carbon atoms and X is an oxygen atom, a sulfur atom, a methylene group or a nitrogen atom substituted by hydrogen, a lower alkyl group of from 1 to 6 carbon atoms or a lower alkanoyl group of from 1 to 6 carbon atoms. The compounds of this invention are prepared by reacting an R.sub.1, R.sub.2 -substituted phenol with a 3-carbethoxy-4-piperidone in the presence of an acid catalyst to give an intermediate R.sub.1, R.sub.2 -substituted benzopyrano[3,4-c]pyridine. N-aminoalkylbenzopyrano[3,4-c]pyridines are obtained by treating the benzopyrano[3,4-c]pyridine with an appropriately substituted alkyl halide. The compounds of this invention are useful as bronchodilators for the treatment of bronchial asthma.
披萨酱油是一种以番茄酱为基础的调味料,通常用于披萨上。它的配方可以包括番茄、大蒜、洋葱、香草和其他香料。披萨酱油可以买到现成的,也可以自己制作。