Journal of the Brazilian Chemical Society
versão impressa ISSN 0103-5053
KUMAR, J.K. et al. Further dihydrochalcones from Crotolaria ramosissima. J. Braz. Chem. Soc. [online]. 1999, vol.10, n.4, pp. 278-280. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50531999000400004.
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.
Palavras-chave : dihydrochalcones; Crotolaria ramosissima; structure elucidation; 1D and 2D 1H and 13C-NMR spectroscopy.