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The kernel oils of Quercus robur and Quercus cerris were obtained by Soxhlet extraction using petroleum ether. Oil yields were found to be 5.2–5.6% and 4.3–4.8% for Q. robur and Q. cerris kernel, respectively (expressed in g per 100 g of dried plant material). The physical and chemical...
The molecular structure of the lagochilin diterpenoid lagochirsine was determined by x-ray structure analysis. The crystallographic investigations were conducted on an automated four-circle STOE/STAD14 diffractometer at room temperature. The crystals were trigonal, space group P3 2 (No. 145), C...
Two new biphenyl esters and three biflavonoids were isolated from the aqueous methanol extract of the fruits of Schinus terebenthefolus . The spectral data of tetrahydrorobustaflavone have been recorded and assigned for the first time. Characterization of the structures was achieved by various...
Xanthones containing acetoxy, allyloxy, and aminohydroxyalkyloxy substituents at the C-1 position that are of interest as potential biologically active agents were prepared. The cholegogic action of 1-hydroxy-, 1-acetoxy-, and 1-allyloxy-substituted xanthones was investigated.
Previously undescribed esters 1b-21b were prepared by reaction of cetyl alcohol 1a , terpene alcohols 2a-16a , plant phenols 17a-19a , and alcohols 20a and 21a with m-C(7)-iso-propylcarboran-C(1)-carboxylic acid.
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