The reactivity of higher plant derived 3-oxy-triterpenoids to sunlight was investigated using a
series of pure reference standards both under simulated and real solar exposure. The …

Leaves from three mangrove species, and surface and deeper soils along salinity gradients
in the Shark River estuary, USA, were analyzed to determine numerous diagenetic …

Early diagenetic dehydration of various pentacyclic triterpenols and Δ 5-sterols was
observed in the cuticular membranes of mangrove leaves and seagrass rhizomes of live …

A series of 24-nor-triterpenoids; 24-nor-urs-12-ene, 24-nor-olean-12-ene and 24-nor-lupane
have been identified in sediments and crude oils by comparison with standards obtained by …

The effect of sedimentary microbial communities on the composition of pentacyclic
triterpenol markers as well as β-sitosterol was studied in mangrove surface sediments from …

The tropical origin of the samples studied conjures up the hypothesis of sun-drenched
sediments, the ketones of which would undergo photolysis. However, at least some of the …

A sediment sequence of early Miocene to Holocene from Ocean Drilling Program Site 645 in
central Baffin Bay was found to contain abundant triterpenoids of higher-plant origin …

A series of Δ 2-triterpenoids (oleana-2, 12-diene, oleana-2, 13 (18)-diene, oleana-2, 18-
diene, ursa-2, 12-diene, and taraxera-2, 14-diene) has been identified in Holocene buried …

Mangrove vegetation covers extensive areas along Brazilian tropical coasts and
accumulates large amounts of organic carbon in the intertidal sediments. We have …

Molecular structures of eight tetracyclic hydrocarbons occurring in sediments were
established either by synthesis of the corresponding reference compounds or spectroscopic …