13C NMR spectra of pentacyclic triterpenoids--a compilation and some salient features

The discovery of a mevalonate-independent pathway for isoprenoid biosynthesis in bacteria, algae and higher plants†

Metabolomics is an emerging field of “omics” research that focuses on high-throughput characterization of small molecule metabolites in biological matrices. As such, metabolomics is ideally positioned to be used in many areas of food science and nutrition research. This review focuses on the recent trends and potential applications of metabolomics in four areas of food science and technology: (1) food component analysis; (2) food quality/authenticity assessment; (3) food consumption monitoring; and (4) physiological monitoring in food intervention or diet challenge studies.

Metabolomics: applications to food science and nutrition research

On the origins of triterpenoid skeletal diversity.

The deoxyxylulose phosphate pathway of terpenoid biosynthesis in plants and microorganisms

From the water-soluble portion of the methanol extract of dill (fruit of Anethum graveolens L.), which has been used as a spice and medicine, thirty-three compounds, including a new monoterpenoid, six new monoterpenoid glycosides, a new aromatic compound glucoside and a new alkyl glucoside were obtained. Their structures were clarified by spectral investigation.

Water-soluble constituents of dill.

Two new triterpenoid sulfates were isolated from the fresh leaf blades of Schefflera octophylla (Araliaceae). On the basis of results of spectral and chemical investigations, their structures were characterized as free forms of 3-epi-betulinic acid 3-O-sulfate and betulinic acid 3-O-sulfate.

Two New Triterpenoid Sulfates from the Leaves of Schefflera octophylla

From the water-soluble portion of the methanol extract of the fruit of Carum ajowan (ajowan), which has been used as a spice and medicine, 25 compounds, including five new monoterpenoid glucosides, a new monoterpenoid, two new aromatic compound glucosides, and two new glucides, were obtained. Their structures were clarified by spectral investigation.

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Water-soluble constituents of ajowan.

As the glycosyl constituents of Ficus pumila L. fruits (Moraceae), three new sesquiterpenoid glucosides, pumilasides A, B and C were isolated together with benzyl beta-D-glucopyranoside, (E)-2-methyl-2-butenyl beta-D-glucopyranoside and rutin. Their structures were characterized as (1S,4S,5R,6R,7S,10S)-1,4,6-trihydroxyeudesmane 6-O-beta-D-glucopyranoside, (1S,4S,5S,6R,7R,10S)-1,4-dihydroxymaaliane 1-O-beta-D-glucopyranoside and 10 alpha, 11-dihydroxycadin-4-ene 11-O-beta-D-glucopyranoside by spectral and chemical methods.

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Three new sesquiterpenoid glucosides of Ficus pumila fruit

From the water-soluble portion of the methanol extract of cumin (fruit of Cuminum cyminum L.), which has been used as a spice and medicine since antiquity, sixteen monoterpenoid glucosides, including twelve new compounds, were isolated. Their structures were clarified by spectral investigation.

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Junichi Kitajima

Papers

Water-soluble constituents of dill.

Two New Triterpenoid Sulfates from the Leaves of Schefflera octophylla

Water-soluble constituents of ajowan.

Three new sesquiterpenoid glucosides of Ficus pumila fruit

Water-soluble constituents of cumin: monoterpenoid glucosides.