The chromatographic and spectral properties of stilbene derivatives

Abstract

The RF of 26 stilbene aglycones and glucosides have been determined in several systems by means of paper chromatography and thin-layer chromatography. Most stilbenes in paper chromatograms showed a straight-line relationship between RF value and the number of free phenolic hydroxyl groups. The absorption spectra of 28 stilbenes in alcohol with or without added sodium acetate, sodium ethylate and boric acid-sodium acetate have been measured. Interpretations of the spectral changes have been made in terms of the structure of stilbenes which also can be divided into several groups due to spectral changes with added sodium ethylate. The presence of ortho-dihydroxyl groups in stilbene molecules can be detected by the spectral changes with boric acid-sodium acetate. © 1968.