Two new dihydrochalcones, crotaramin (2) and crotin (3), have been isolated from the Indian plant Crotolaria ramosissima. Their structures have been elucidated by extensive one- and two-dimensional NMR spectroscopy including HMBC and NOESY.
dihydrochalcones; Crotolaria ramosissima; structure elucidation; 1D and 2D ¹H and 13C-NMR spectroscopy