Showing papers in "Phytochemistry in 1978"

TL;DR: All important chemical constituents of the Celastraceae family isolated up to 1 March 1978 are surveyed and discussed from a chemical, pharmacological, biosynthetic and chemotaxonomic point of view.

TL;DR: Structures and configurations of some of the investigated species contain besides the widely distributed pentaynene 33 several known thymol derivatives together with a new one.

TL;DR: Hydroxycinnamic acid amides have been identified as the main phenolic constituents in the reproductive organs of a range of flowering plants.

TL;DR: A strong correlation has been found between the levels of nickel and citric acid in the leaves of 17 New Caledonian plant species which show a range of nickel-accumulating ability, and purified extracts of these plants contain nickel as a citrate complex.

TL;DR: The occurrence of steroid hormones in plants is briefly reviewed and their effects on plant growth, development and flowering are considered.

TL;DR: Protein bodies may be considered as being an example of tonoplast origin from endo-plasmic reticulum, which is based mainly on storage proteins and phytic acid but, hydrolytic enzymes, cations and ribonucleic acids are also present.

TL;DR: In this article, a compound identified as veratryl alcohol (1) was found to be a non-metabilizable degradation product of the lignin-related aromatics studied.

TL;DR: The biogenesis, structural diversity and distribution of simple, furano- and pyranocoumarins in the Rutaceae is reviewed and the potential value of these compounds as taxonomic markers and their possible functions are discussed.

TL;DR: In this article, the structure of the monomethyl ether of isolariciresinol has been established based on the 13 C NMR spectra of these compounds, their methyl and acetyl derivatives, and the corresponding one of matairesinols.

TL;DR: In this paper, 35 N -phenyl- N "-(4-pyridyl)urea derivatives were synthesized and tested their cytokinin activity in the tobacco callus bioassay.

TL;DR: Two high pigment-producing strains, whose content of shikonin derivatives are stable and similar to that of intact plant root, have been established by repeated selection of Lithospermum erythrorhizon cultures.

TL;DR: In this article, the authors investigated the cytotoxic active components of Michelia compressa and obtained two new sesquiterpene lactones, michelenolide and micheliolide.

TL;DR: In this paper, six flavonoids, five of them novel, have been isolated from the whole stem of Popowia cauliflora and identified as: baicalein trimethyl ether, 5-hydroxy-6,7-dimethoxyflavone, 5,7,8-trimethoxyFLavanone, 2.

TL;DR: In this article, the authors extracted the cell wall material (CWM) of potatoes by sequentially extracting the wet ball-milled tissue with 1 % aq. Na deoxycholate, PhOH-HOAcH2O and 90 % (v/v) aq DMSO.

TL;DR: In this article, a further 27 Euryops species were investigated and 55 new furanoeremophilanes together with several other compounds were found, including 3-methylpent-3(E )-enoic acid, not found before in nature.

TL;DR: Cell walls of Pinus elliottii tissue cultures were isolated and incubated with coniferyl alcohol and H2O2 and lignin having physical and chemical properties similar to that prepared from wood was formed by the peroxidase attached to the walls.

TL;DR: A fraction rich in endoplasmic reticulum is shown to contain most of the binding sites for NAA and all of the activity of both S -adeno-Syl- L -methionine-Δ24 cycloartenol methyltransferase and cycloeucalenol-obtusifoliol isomerase.

TL;DR: Myoinositol hexaphosphate strongly inhibited α-amylases of different origins and addition of Ca2+ did not reverse the inhibition of α-Amylase indicating that its inhibition was not due to the binding ofCa2+ by MHP.

TL;DR: Single-cell clones of Nicotiana tabacum callus showed wide variation in the production of nicotine, and several cell lines with higher yield of nicotine have been isolated by repeated clonal selection.

TL;DR: Elemicin, galbacin, veraguensin and two new neolignans, surinamens in and virolin, were isolated and characterized from the leaves of VirolaSurinamensis.

TL;DR: In this article, Pseudo-ginsenoside-F 11 was identified as the 6- O -α-rhamnopyransyl(1 → 2)-β-glucopyranoside of 3β,6α,12β,25-tetrahydoxy-(20 S,24R)-epoxy-dammarane.

TL;DR: In this paper, the hydrodynamic properties of polygalacturonate fractions from unripe and ripe apple tissue were examined and it was shown that the wall bound fraction was degraded during ripening but the soluble fraction was not.

TL;DR: Under conditions of photosynthesis, shikimate and D,L -tyrosine were incorporated into the aromatic amino acids Phe, Tyr and Trp, and the prenylquinone and α-tocopherol by intact spinach chloroplasts, which might indicate the presence of enzymes ofShikimate pathway in chloroplast.

TL;DR: The increase in flavanone synthase activity in the cytosol fraction from petals of Hippeastrum during development paralleled the increase in anthocyanin content of the petals.

TL;DR: Four new 4α-methylsterols in the seeds of Solanaceae were identified as 31-norlanost-9(11)-enol, 24-methyl-31-nor Lanost- 9(11-enol), 4α,24-dimethylcholesta-7,24

TL;DR: Cysteine synthases were partially purified from leaf tissue of 3 selenium-accumulator species and 4 non- Accumulator plants with respect to selenocysteine synthesis with no distinct differences between the properties of the enzymes.

TL;DR: Among the various plant hormones administered to excised cotyledons in culture, benzyladenine and its riboside were most effective in increasing the arginine decarboxylase activity and putrescine content.

TL;DR: The heterotrophic dinoflagellate Crypthecodinium cohnii contained the 4α-methyl sterols, dinosterol, dehydrodinosterol (4α,23,24-trimethylcholesta-5,22-dien-3β-ol) and the tentatively identified 4α, 24-dimethyl-cholestan-3 β-ol and 4α,.

TL;DR: In this paper, the principal classes of polymers present are glucuronoarabinoxylans (GAX) and iodine-negative hemicellulosic β-glucans.