(±)Lespedezaflavanone E, 6, 8, 3’-tri (γ,γ-dimethylallyl)-5, 7, 2’, 4’-tetrahydroxy-flavanone, has been synthesized by the condensation of 3, 5-di (γ
Two minor steroidal saponins were isolated from the roots of Smilaxmenispermoidea.One of them is new and its structure was established as(25S)spirost-5-en-3β,1
The mixture of fullerene—C<sub>60</sub> and —C<sub>70</sub> was successfully separated in larger amount by liquid chromatogra-phy on graphite column.The colum
A europium chelate of 5-chlorosulfoyl-2-thenoyltrifluoroacetone(CTTA)was investigated for precolumn derivatization ofprotein for high performance liquid chromat