[A new alkaloids isolated from tetraploidy banlangen].
OBJECTIVE
To investigate the chemical constituents of tetraploidy Banlangen (Isatis indigotica Fort.).


METHODS
Compounds were separated by chromatography on silica gel. Their structures were determined by spectral analysis and chemical evidence.


RESULTS
Three compounds were isolated. Their structures were identified as (E)-2-[(3'-indole) cyanomethylene]-3-indolinone (I), 2-(4-hydroxy-3-methoxyphenyl)-4-[(4-hydroxy-3-methoxy-phenyl)-methyl]-3- hydroxymethyl-tetrahydro-furan (II) and 2-methoxy-4-[tetrahydro-4-[(4-hydroxy-3-methoxy-phenyl)-methyl]-3- hydroxymethyl-2-furanyl] phenyl-1-O-beta-D-glucopyranoside (III).


CONCLUSIONS
Compound I is a new compound.
D007211:Indoles / Q000737:chemistry*; D031219:Isatis / Q000737:chemistry* / Q000235:genetics; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry* / Q000235:genetics; D011123:Polyploidy
C488397:(E)-2-((3'-indole) cyanomethylene)-3-indolinone; D007211:Indoles