Tri-and tetracyclic diterpenoid and pentacyclic triterpenoid hydrocarbons have been
identified in the lipid extracts of three peat samples from the Hula Basin, Israel. Tentative …

Pristane (2, 6, 10, 14-tetramethylpentadecane), frequently the most abundant biomarker
hydrocarbon in crude oils and rock extracts, was thought originally to be derived directly …

Nonpolar GC-columns are normally used for GC–MS analysis of saturate fractions from
crude oils. Under these conditions lupane coelutes with oleananes and some minor C30 …

Tricyclic diterpenoids and non-steroid or non-hopanoid pentacyclic triterpenoids are almost
exclusively taxon-specific terrestrial plant biomarkers produced by conifers and …

Anaerobic ammonium oxidation (anammox) has been recognized as a major process
resulting in loss of fixed inorganic nitrogen in the marine environment. Ladderane lipids …

One of the major components of the organic solvent extractable fraction of Cretaceous
ambers is 1, 6-dimethyl-5-isopentyltetralin, a compound that has been incorrectly or not …

Isolation and Characterization of a Triterpenoid Alcohol from the Green River Shale Page 1
CHEMICAL COMMUNICATIONS, 1971 1331 Isolation and Characterization of a Triterpenoid …

Diagenetic products of the green sulfur bacterial pigment isorenieratene have been studied
in sediments from the Jurassic Kimmeridge Clay Formation and in a Pliocene Mediterranean …

'>a Page 1 J. CHEM. SOC., CHEM. COMMUN., 1995 187 Cyclisation and Aromatisation of
Carotenoids during Sediment Diagenesis Jaap S. Sinninghe Damste,*a Jurgen Koster,a …

The main objective of the present study was to clarify if the fernane derivatives 5-methyl-10
(4-methylpentyl)-des-A-25-norferna-5, 7, 9-triene (MATH), 25-norferna-5, 7, 9-triene (MAPH) …