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 …

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 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 extractable organic matter in Holocene to early Miocene deep-sea sediments from Site
645 (ODP Leg 105) in Baffin Bay contains almost exclusively biological markers of …

Three monoaromatic pentacyclic triterpenoids of the lupane, ursane and oleanane series,
and a monoaromatic tetracyclic triterpenoid of the lupane series have been synthesised and …

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 …

The distribution of triterpanes in sediments and crude oils is commonly used for oil/oil and
oil/source rock correlation in petroleum geochemistry while isomer ratios of such …

The traditional organic geochemical view suggests that polar triterpenoids are degraded
easily during fossilization of organic matter. For the first time, we show that dammarane-type …

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 …

The Miocene lacustrine deposit at Clarkia, northern Idaho, USA is well known for its rich and
exceptionally well preserved higher-plant leaf fossils. In the present study, the distributions …