Urease inhibitors from Indigofera gerardiana Wall.

Three new phloroglucinol type compounds Indigoferin-A (1), Indigoferin-B (2) and Indigoferin-C (3), along with a known compound β-sitosterol were isolated from the Indegofera gerardiana Wall. The structures of Indigoferin-A (1), Indigoferin-B (2), and Indigoferin-C (3) were deduced on the basis of spectroscopic techniques (EI-MS, HREI-MS, (1)H NMR, (13)C NMR, HMQC, and HMBC). The urease inhibition studies on all the four compounds have also been carried out.