TL;DR: Hydroxamic acids of the type 4-hydroxy-1,4-benzoxazin-3-ones constitute one of the most extensively studied secondary metabolites in relation to host plant resistance to pests and diseases.

TL;DR: ‘Structure-activity’ relationships are delineated as are experimental approaches which seek to define the modes and sites of binding of ligand to the receptor (protein) in a model for polyphenol-protein complexation.

TL;DR: In this paper, the distribution of phenylpropanoic acids in dicotyledons is visualized by using the Dahlgren diagram, and the most derived compounds are found in the most remote groups of the Lamianae, e.g. Orobanchaceae.

TL;DR: In this article, twelve caffeoyl conjugates were isolated from Echinacea pallida and their structures elucidated by NMR and mass spectrometry, which are either caffeic glycosides or caffeic esters of quinic or tartaric acid.

TL;DR: Headspace volatiles collected from six Crucifer species of the two genera Brassica and Sinapis were investigated by GC/MS and a total of 34 compounds were identified from both whole plants and macerated plant parts, several of which have, to the authors' knowledge, not been previously reported.

TL;DR: Four steroids were isolated from the fruiting bodies of Agaricus blazei and three compounds 2, 3 and 6 were cytotoxic against HeLa cells.

TL;DR: The recent techniques used in their isolation and structure elucidation are discussed and a compilation of the triterpenoid saponins isolated and characterized during the period 1979–1986 along with their occurrence is included.

TL;DR: The rapid inhibition of squalene synthetase in elicited cultures may operate to channel FPP away from sterol biosynthesis and towards the FPP-carbocyclase involved in the biosynthesis of the two sesquiterpenoid phytoalexins or may be part of a more general response of plant cells to treatment with elicitors.

TL;DR: The increasing knowledge of various aspects of flavonoid sulphates calls for an update of previous reviews as mentioned in this paper, which describes the recent advances in their structural variation and distribution patterns in plants.

TL;DR: Levels of betulin in the outer bark of four species of white-barked birch range from 5.0 to 22.0%, which is taxonomically useful and significantly different between two taxa, Betula cordifolia and B. papyrifera.

TL;DR: On the basis of NMR spectroscopy of the free acid and its anion, a tertiary structure is proposed for the side-chain of luteolin 7- O -(6″- O-malonyl)-β- d -glucopyranoside, the first for a flavonoid malonate.

TL;DR: Triacyglycerols were the predominant lipid of the non-photosynthetic marine dinoflagellate Crypthecodinium cohnii grown heterotrophically for six years and were found to be polypeptide-like to polymethine-like in nature.

TL;DR: The dynamic qualities of the plant cell wall are explored and the potentially rapid capacity for implementation of changes in the extracellular matrix of the cell, probably commencing with processes of activation of specific subsets of genes in response to particular signals, is striking.

TL;DR: In this article, undeca-2 E,4 Z -dien-8,10-diynoic acid 2-methylbutylamide was reported for the first time in an Echinacea species.

TL;DR: Six triterpenes were isolated from Paeonia japonica tissue culture and determined by spectral methods to be oleanolic acid, hederagenin, betulinic acid, 24-cycloartanol, 30-norhederagenin and 23-hydroxybetulinic Acid.

TL;DR: Castanospermine, a physiologically active polyhydroxylated indolizidine alkaloid first isolated from seeds of Castanospermum australe, has been isolated from the dried pod of Alexa leiopetala and tentatively identified in seven other species of the same genus.

TL;DR: Investigating the occurrence of insoluble conjugated (ester-bound) hydroxycinnamic acids and flavonol glycosides in cell wall preparations from leaves of 54 species from various Conifer taxa finds the bound β-coumaric and ferulic acids seem to be widespread among members of the Coniferae.

TL;DR: In this paper, the authors compared lignin and proanthocyanidins in terms of their stereochemistry, absorption spectra, biosynthetic pathways, intracellular and tissue localization, solubility, concentration and association with carbohydrates.

TL;DR: A biopolymer highly resistant to non-oxidative treatments (PRB B) occurs in the outer walls of the B race of Botryococcus braunii; however, the structural information obtained indicate it does not derive from carotenoids.

TL;DR: Amin et al. as discussed by the authors isolated thirty-one alkaloids from the leaves and from the stem bark of Alstonia angustifolia from Malaysia, including 19,20-dehydro-10-methoxytalcarpine, 19, 20-degreed-20 dehydro O -acetyl yohimbine and hydroxystrictamine, and eight were dimers.

TL;DR: The tetraunsaturated fatty acid exterminated toxic red tide planktons such as Chattonella antiqua at 1 ppm concentration.

TL;DR: The structure-activity specificity of vir-induction is reported, and results which indicate that Agrobacterium is capable of detecting compounds which are ubiquitous or at least widespread amongst its host range are presented.

TL;DR: Fungal pathogens of tomato were generally more resistant to α-tomatine than non-pathogenic fungi (as determined by electrolyte loss).

TL;DR: 9α-Hydroxypinoresinol and 9α-hydroxymedioresInol were isolated along with seven known lignans, pinoresinols, medioresinoli, syringaresinol, and their glucosides, from Allamanda neriifolia.

TL;DR: 3,5,6,7,8-Pentamethoxyflavone is a new naturally occurring flavonoid isolated from Citrus leaves and found externally deposited on the leaf and stem surfaces.

TL;DR: In well-watered plants, pinitol concentration was two to three times higher in the Moroccan plants than in the French plants, while myo-inositol concentration seemed only to increase in roots of the Morocco plants.

TL;DR: Hyptatic acid-A and 2α-hydroxyursolic acid demonstrated significant in vitro cytotoxicity in human colon HCT-8 tumour cells in this paper, using Spectral data in conjunction with X-ray analysis of the methanol solvate of hyptasis capitata.

TL;DR: The structure of plantamajoside, a phenylpropanoid glycoside isolated from Plantago major subs major, is deduced from chemical, spectral and other physical evidence, to be 3,4-dihydroxy-β-phenethyl- O -β- d -glucopyranosyl.