Studies were carried out to determine the absolute stereochemistry of
botryococcene (1). The natural product was degraded to two sets of 'y- and 8-
valerolactones. All enantiomeric variations of these lactones were synthesized in
optically pure form starting from (S)- and (R)-methyloxiranes. 1H NMR correlation of
natural and synthetic materials...
The purpose of this research was to compare four different media that were used to monitor SOC atmospheric concentrations in remote ecosystems. The accumulation of semi-volatile organic compounds, including pesticides, polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), was investigated in lichen, 2-year old conifer needles, resin-based passive air sampling...