Premium
A New Pyranocoumarin Diester from Polygala paniculata L
Author(s) -
Hamburger Matthias,
Hostettmann Kurt,
StoeckliEvans Helen
Publication year - 1984
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19840670710
Subject(s) - chemistry , coumarin , silica gel , chromatography , column chromatography , stereochemistry , organic chemistry
A new coumarin diester has been isolated from Polygala paniculata L. ( Polygalaceae ) by a combination of flash chromatography on silica gel and preparative reversed‐phase chromatography. Its structure has been determined as 3′‐ O ‐acetyl‐4′‐ O ‐benzoylkhellactone (= 9 ‐ acetoxy ‐ 9,10 ‐ dihydro ‐ 8,8 ‐ dimethyl ‐ 2 ‐ oxo ‐ 2 H, 8 H‐ benzo[1 , 2 ‐b: 3,4 ‐b′ ]dipyranh ‐ 10 ‐ yl benzoate ) by spectroscopic methods (UV, IR, 1 H‐NMR, EI‐and CI‐MS) and by X‐ray analysis.