New compound 6,7-dimethoxy-2-methylisoquinolinium from Indian medicinal plant Annona squamosa L.

In this paper we report one new compound from Indian medicinal plant A. squamosa L. which is characterized as 6,7-dimethoxy-2-methylisoquinolinium & is obtained from the twigs of the plant in its chloroform fraction. One known compound Rutin is also obtained from n-butanol fraction and is reported for the first time from this plant which is characterized as 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-{{(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yloxy}methyl}tetrahydro-2H-pyran-2-yloxy]-4H-chromen-4-one.