3 resultados
BACKGROUND
Surface-expressed Na+/K+-ATPase (NaK) has been suggested to function as a non-canonical cardiotonic steroid-binding receptor that activates multiple signaling cascades, especially in cancer cells. By contrast, the current study establishes a clear correlation between the IC50in vitro
Bioassay-guided fractionation of an ethanol extract of Roupellina (Strophanthus) boivinii from the rainforest of Madagascar afforded the six new cardenolide glycosides boivinides 1-6, as well as the four known cardenolide glycosides digitoxigenin
Two new steroidal saponins, extensumsides A ( 1) and B ( 2), were isolated from the whole plants of Myriopteron extensum (Wight) K. Schum. Their structures were elucidated as 17 beta-uzarigenin-3- O- beta-glucopyranosyl-(1-->6)- beta-glucopyranosyl-(1-->4)- beta-thevetopyranosyl-(1-->4)-