Constituents of the Roots of Boerhaavia diffusa L. I. : Examination of Sterols and Structures of New Rotenoids, Boeravinones A and B

Abstract

Examination of the ether extract of the roots of Boerhaavia diffusa L. led to the isolation of three new rotenoid analogues along with fatty acids, glycerides, and sterol derivatives. The structures of two rotenoid analogues named boeravinone A and boeravinone B have been determined by means of nuclear magnetic resonance spectroscopy including two-dimensional incredible natural abundance double quantum transfer experiment (2D INADEQUATE) and ¹H-¹³C long range correlation spectroscopy.