Chromatographic behaviour and chemical structure I. Some naturally occuring phenolic substances

摘要: Abstract The RF values, accurate and reproducible to ± 0.02, in butanol-acetic acid m-cresol-acetic-acid of a number naturally-occurring flavones, anthocyanins, related compounds have been determined; also the values hydroxy-, methoxy-, carboxy-derivatives benzene. It is shown that are nature substituent groups C15 C6 skeleton, respectively, such way many instances straight line given when log I R F − plotted against any one kind. This relationship, predicted by Martin 2, follows from relationship between constitution partition coefficient which amino-acids provide notable example ( England Cohn 3). symbol RM suggested for function . Several departure regularity above respect attributable constitutional factors, especially ortho or vicinal arrangement groups.