Isolation of a Novel Indigoferamide-A from Seeds of Indigofera Heterantha Wall and its Antibacterial Activity

A new indigoferamide-A (1) along with three new source compounds dotriacontanoic acid (2), quercetin (3) and formononetin “4-hydroxy-4-methyl-2-pentanone” (4) were isolated from the seeds of Indigofera heterantha Wall. The structures of all these compounds were determined by using mass spectrometry, 1D-and 2D NMR techniques. The structure of the new indigoferamide-A was established by methanolysis as well as by GC-MS analysis.