Sulfonated alkaloids from an aqueous extract of Isatis indigotica roots

Sulfonated alkaloids from an aqueous extract of Isatis indigotica roots Diglycosidic indole alkaloid derivatives from an aqueous extract of Isatis indigotica roots New alkaloids from Isatis indigotica Isatindigodiphindoside, an alkaloid glycoside with a new diphenylpropylindole skeleton from the root of Isatis indigotica Chemical Constituents of<i>Isatis indigotica</i> Chemical Constituents ofIsatis indigotica Four new indole alkaloids from the roots of Isatis tinctoria Alkaloids with Nitric Oxide Inhibitory Activities from the Roots of Isatis tinctoria Isatisindigoticanine A, a novel indole alkaloid with an unpresented carbon skeleton from the roots of Isatis tinctoria Antiviral enantiomers of a bisindole alkaloid with a new carbon skeleton from the roots of Isatis indigotica