Saponins and Sapogenins from Brachiaria decumbens Stapf

Viviane S. Pires, Alexandre T. C. Taketa, Grace Gosmann, Eloir P. Schenkel
2002 Journal of the Brazilian Chemical Society  
Quatro saponinas esteroidais e três sapogeninas foram identificadas das partes aéreas de Brachiaria decumbens. As estruturas desses compostos foram estabelecidas através de métodos químicos e espectroscópicos (RMN de 1 H e 13 C, HMBC, HMQC) como 3b-metóxi-lanost-9(11)-eno (1), Esses compostos foram isolados pela primeira vez em B. decumbens, sendo que o composto 4b não foi ainda descrito na natureza conforme revisão realizada. Four steroidal saponins and three sapogenins were identified from
more » ... identified from aerial parts of Brachiaria decumbens. Their structures were established by chemical and spectroscopic means ( 1 H and 13 C NMR, HMBC, HMQC) as 3b-methoxy-lanost-9(11)-ene (1), diosgenin (2a), yamogenin (2b), 3- All these compounds were isolated for the first time from B. decumbens and compound 4b is described for the first time as far as we know.
doi:10.1590/s0103-50532002000200002 fatcat:3mqokfhtkbhuvpjcgowxxordl4