Structural Variations in Proanthocyanidins and Their Derivatives

The Flavonoids: Advances in Research.

1984 • 1,482 citations

Plant proanthocyanidins. Part I. Introduction; the isolation, structure, and distribution in nature of plant procyanidins

1972 • 451 citations

Polyphenol interactions. Part 1. Introduction; some observations on the reversible complexation of polyphenols with proteins and polysaccharides

1985 • 293 citations

Polymeric proanthocyanidins. Stereochemistry, structural units, and molecular weight

1980 • 283 citations

Flavans and proanthocyanidins

1988 • 198 citations

Symmetry and promiscuity in procyanidin biochemistry

1977 • 173 citations

The phytochemistry of proanthocyanidin polymers

1980 • 157 citations

Flavones and Flavonols

1982 • 150 citations

Tannin-Based Adhesives

1980 • 138 citations

Tannins and related compounds. I. Rhubarb (1).

1981 • 135 citations

Zur Kenntnis der Proanthocyanidine, X Procyanidine aus Früchten

1968 • 118 citations

Adhesives from Renewable Resources

1989 • 118 citations

Polymeric proanthocyanidins. 13C N.m.r. studies of procyanidins

1982 • 113 citations

Synthesis of condensed tannins. Part 4. A direct biomimetic approach to [4,6]- and[4,8]-biflavanoids

1981 • 110 citations

Plant proanthocyanidins. Part 6. Chiroptical studies. Part 95. Circular dichroism of procyanidins

1979 • 110 citations

Synthesis of condensed tannins. Part 1. Stereoselective and stereospecific syntheses of optically pure 4-arylflavan-3-ols, and assessment of their absolute stereochemistry at C-4 by means of circular dichroism

1981 • 110 citations

Linkage isomerism in trimeric and polymeric 2,3-cis-procyanidins

1982 • 109 citations

Glucosylated flavonoids and other phenolic compounds from sorghum

1986 • 105 citations

Molecular weight profiles of proanthocyanidin polymers

1983 • 102 citations

Tannins and related compounds. XXXVIII. Isolation and characterization of flavan-3-ol glucosides and procyanidin oligomers from cassia bark (Cinnamomum cassia Blume).

1986 • 100 citations

Condensed tannins: (4.beta..fwdarw.8;2.beta..fwdarw.O.fwdarw.7)-linked procyanidins in Arachis hypogea L

1986 • 98 citations

Tannins and related compounds. Part 13. Isolation and structures of trimeric, tetrameric, and pentameric proanthicyanidins from cinnamon

1983 • 96 citations

Plant proanthocyanidins. Part II. Proanthocyanidin-A2 and its derivatives

1974 • 90 citations

Flavan-3-ol Biosynthesis

1984 • 90 citations

Procyanidins and polyphenols of Larix gmelini bark

1986 • 87 citations

Myricatin, a galloyl flavanonol sulfate and prodelphinidin gallates from Myrica rubra

1983 • 86 citations

Tannins and related compounds. XXXI. Isolation and characterization of proanthocyanidins in Kandelia candel (L.) Druce.

1985 • 86 citations

Structures of dimeric, trimeric, and tetrameric procyanidins from Areca catechu L.

1981 • 84 citations

Stilbene glycoside gallates and proanthocyanidins from Polygonum multiflorum

1982 • 82 citations

Prodelphinidin polymers: definition of structural units

1978 • 80 citations

A proanthocyanidin from avocado seed

1965 • 79 citations

Plant proanthocyanidins. Part 5. Sorghum polyphenols

1978 • 77 citations

Zur Kenntnis der Proanthocyanidine, XI¹⁾ Konfigurationsbestimmung von C₃₀H₂₆O₁₂‐Procyanidinen und Strukturaufklärung eines neuen Procyanidins

1968 • 75 citations

Proanthocyanidin dimers and polymers from Quercus dentata

1987 • 67 citations

Flavanol digallates in green tea leaf

1972 • 65 citations

Proanthocyanidins of barley and sorghum; composition as a function of maturity of barley ears

1980 • 63 citations

High-resolution13C NMR studies of proanthocyanidin polymers (condensed tannins)

1987 • 62 citations

Structure of catechinic acid. Base rearrangement product of catechin

1974 • 61 citations

7-O-Galloyl-(+)-catechin and 3-O-galloylprocyanidin B-3 from Sanguisorba officinalis

1983 • 61 citations

Tannins and related compounds. VIII. A new type of proanthocyanidin, cinchonains IIa and IIb from Cinchona succirubra. (2).

1982 • 61 citations

Tannins and other phenolics from Myrica esculenta bark

1988 • 61 citations

The identification of the thearubigins as polymeric proanthocyanidins

1969 • 60 citations

Tannins and related compounds. XLV Rhubarb. 5 Isolation and characterization of flavan-3-ol and procyanidin glucosides.

1986 • 58 citations

Loblolly pine bark polyflavanoids

1980 • 56 citations

Structure of ephedradine A, a hypotensive principle of Ephedra roots

1979 • 55 citations

Synthesis of condensed tannins. Part 19. Phenol oxidative coupling of (+)-catechin and (+)-mesquitol. Conformation of bis-(+)-catechins

1987 • 54 citations

Plant proanthocyanidins. Part 4. Biosynthesis of procyanidins and observations on the metabolism of cyanidin in plants

1977 • 53 citations

Flavanol glucosides from rhubarb and Rhaphiolepis umbellata

1983 • 53 citations

Isolation of three naturally occurring O-β-glucopyranosides of procyanidin polymers

1985 • 51 citations

Tannins and related compounds. Part 26. Isolation and structures of stenophyllanins A, B, and C, novel tannins from Quercus stenophylla

1985 • 47 citations

Condensed tannins: direct synthesis, structure, and absolute configuration of four biflavonoids from black wattle bark (‘mimosa’) extract

1978 • 46 citations

Chemical and enzymatic synthesis of monomeric procyanidins (leucocyanidins or 3′,4′,5,7-tetrahydroxyflavan-3,4-diols) from (2R,3R)-dihydroquercetin

1985 • 45 citations

Chemistry and utilization of western hemlock bark extractives

1980 • 45 citations

Heterogeneity of interflavanoid bond location in loblolly pine bark procyanidins

1983 • 45 citations

Oxydative Kupplung von Phenolen, II¹⁾ Konstitution und Bildungsmechanismus des Dehydro‐dicatechins A

1969 • 45 citations

Flavan-3-ol and procyanidin glycosides from quercus miyagii

1987 • 43 citations

Condensed tannins. Base-catalysed reactions of polymeric procyanidins with phloroglucinol: intramolecular rearrangements

1987 • 42 citations

Oligomeric flavanoids. Part 3. Structure and synthesis of phlobatannins related to (–)-fisetinidol-(4α,6)- and (4α,8)-(+)-catechin profisetinidins

1988 • 42 citations

Structures of Mahuannin A and B, Hypotensive Pronciples of Ephedra Roots

1982 • 41 citations

Biosynthesis of flavan-3-ols and other secondary plant products from (2S)phenylalanine

1984 • 40 citations

Phlobatannins, a novel class of ring-isomerized condensed tannins

1985 • 40 citations

Enantiomerism: A characteristic of the proanthocyanidin chemistry of the monocotyledonae

1983 • 39 citations

Kopsirachin, ein ungewöhnliches Alkaloid aus der Apocynaceae Kopsia dasyrachis Ridl. 189. Mitteilung über organische Naturstoffe

1984 • 38 citations

Condensed tannins: base-catalysed reactions of polymeric procyanidins with toluene-α-thiol. Lability of the interflavanoid bond and pyran ring

1987 • 37 citations

Procyanidino-(-)-epicatechin, ein zweiarmig verknüpftes, kondensiertes proanthocyanidin aus aesculus hippocastanum

1966 • 36 citations

Novel biflavonoids, chalcan-flavan dimers from gambir.

1980 • 35 citations

Oligomeric flavanoids. Part 4. Base-catalysed conversions of (–)-fisetinidol-(+)-catechin profisetinidins with 2,3-trans-3,4-cis-flavan-3-ol constituent units

1988 • 35 citations

Structure elucidation of some proanthocyanidins in barley by1H 270 MHz NMR spectroscopy

1981 • 35 citations

Heterogeneous fluorescence decay of (4 .fwdarw. 6)- and (4 .fwdarw. 8)-linked dimers of (+)-catechin and (-)-epicatechin as a result of rotational isomerism

1987 • 35 citations

A cytotoxic isoflavone from Cudrania cochinchinensis

1988 • 34 citations

Synthesis of condensed tannins. Part 7. Angular [4,6 : 4,8]-prorobinetinidin triflavanoids from black wattle (‘Mimosa’) bark extract

1983 • 34 citations

Condensed tannins: synthesis of the first ‘branched’ procyanidin trimer

1984 • 33 citations

Synthesis of condensed tannins. Part 17. Oligomeric (2R,3S)-3,3′,4′,7,8-pentahydroxyflavans: atropisomerism and conformation of biphenyl and m-terphenyl analogues from Prosopis glandulosa(‘mesquite’)

1986 • 33 citations

Natural Proanthocyanidins

1975 • 32 citations

Synthesis of condensed tannins. Part 11. Intramolecular enantiomerism of the constituent units of tannins from the anacardiaceae: stoicheiometric control in direct synthesis: derivation of 1H nuclear magnetic resonance parameters applicable to higher oligomers

1983 • 32 citations

ZUR KENNTNIS DER CATECHIN-GERBSTOFFE

1958 • 31 citations

Condensed tannins: co-occurrence of procyanidins, prodelphinidins and profisetinidins in the heartwood of Acacia baileyana

1984 • 31 citations

Isoflavonoids

1982 • 31 citations

Synthesis of condensed tannins. Part 14. Biflavanoid profisetinidins as synthons. The Acid-induced ‘phlobaphene’ reaction

1985 • 30 citations

Structure of ephedrannin A, A hypotensive principle of roots

1982 • 29 citations

Condensed tannins: a proposed route to 2R,3R-(2,3-cis)-proanthocyanidins

1985 • 29 citations

Synthesis of condensed tannins. Part 13. The first 2,3-trans-3,4-cis-procyanidins: sequence of units in a ‘trimer’ of mixed stereochemistry

1985 • 29 citations

Tannins and related compounds. XXXIX. Procyanidin C-glucosides and an acylated flavan-3-ol glucoside from the barks of Cinnamomum cassia Blume and C. obtusifolium Nees.

1986 • 28 citations

Proanthocyanidins

1982 • 28 citations

ChemInform Abstract: THE STRUCTURE OF CATECHINIC ACID, A BASE REARRANGEMENT PRODUCT OF CATECHIN

1975 • 28 citations

Synthesis of condensed tannins. Part 12. Direct access to [4,6]- and [4,8]-all-2,3-cis-procyanidin derivatives from (–)-epicatechin : assessment of bonding positions in oligomeric analogues from Crataegus oxyacantha L.

1984 • 25 citations

Acylated flavanols and procyanidins from Salix sieboldiana

1985 • 25 citations

Synthesis of condensed tannins. Part 5. The first angular [4,6 : 4,8]-triflavanoids and their natural counterparts

1982 • 25 citations

A novel pyrogallol A-ring proanthocyanidin dimer from Acacia melanoxylon

1986 • 24 citations

The first condensed tannins based on a stilbene

1983 • 24 citations

STRUCTURE ELUCIDATION OF THREE DIMERIC PROANTHOCYANIDINS ISOLATED FROM A COMMERCIAL BELGIAN PILSNER BEER

1984 • 24 citations

The Chemistry of Biflavanoid Compounds

1973 • 24 citations

A methylated catechin and proanthocyanidins from the celastraceae

1976 • 24 citations

Phlobatannins via facile ring isomerizations of profisetinidin and prorobinetinidin condensed tannin units

1986 • 23 citations

Degradation of tannins from carob pods (Ceratonia siliqua) by thioglycolic acid

1971 • 23 citations

Number- and Weight-Average Molecular Weights for Some Proanthocyanidin Polymers (Condensed Tannins)

1986 • 23 citations

Studies on Anti-inflammatory Agents. VI. Anti-inflammatory Constituents of Cinnamomum sieboldii MEISSN.

1982 • 23 citations

Biflavonoids and Proanthocyanidins

1989 • 22 citations

Oligomeric flavanoids. Part 1. Novel dimeric profisetinidins from Colophospermum mopane

1988 • 22 citations

Condensed Tannins. Structure of the “Phenolic Acids”

1987 • 22 citations

The first 2,3-trans-3,4-cis procyanidin

1985 • 21 citations

Synthesis of condensed tannins. Part 18. Stilbenes as potent nucleophiles in regio- and stereo-specific condensations: novel guibourtinidol-stilbenes from Guibourtia coleosperma

1987 • 20 citations

Synthesis of condensed tannins. Part 15. Structure of natural ‘angular’ profisetinidin tetraflavanoids: asymmetric induction during oligomeric synthesis

1985 • 20 citations

Synthesis of condensed tannins. Part 10. ‘Dioxane-linked’ profisetinidins

1983 • 20 citations

Plant proanthocyanidins. Part 7. Prodelphinidins from Pinus sylvestris

1981 • 19 citations

Biflavanoid proguibourtinidin carboxylic acids and their biflavanoid homologues from Acacia luederitzii

1985 • 19 citations

Oligomeric isoflavonoids. Part 2. Structure and synthesis of xanthocercin A and B, the first isoflavono-lignoids

1988 • 19 citations

The molecular and crystal structure of (+)-2,3-trans-3,4-trans-leucocyanidin [(2R,3S,4R)-(+)-3,3′,4,4′,5,7-hexahydroxyflavan] dihydrate, and comparison of its heterocyclic ring conformation in solution and the solid state

1985 • 19 citations

Flavonoids from Elaeodendron balae root bark

1985 • 19 citations

Synthesis of condensed tannins. Part 6. The sequence of units, coupling positions and absolute configuration of the first linear [4,6 : 4,6]-triflavanoid with terminal 3,4-diol function

1982 • 19 citations

The first natural procyanidin with a 3,4-cis configuration

1986 • 19 citations

The first naturally occurring 4-aryl flavan-3-ol

1983 • 18 citations

Biflavonoids

1975 • 18 citations

Prenylated flavan-3-ols and procyanidins from Illicium anisatum

1988 • 18 citations

Structure of Mahuannin D, a Hypotensive Pronciple of Ephedra Roots

1983 • 18 citations

Über Catechin‐Dimere der Eichenrinde

1971 • 17 citations

Zur Kenntnis der Flavonoid‐Gerbstoffe

1963 • 17 citations

Atropisomerism in a new class of condensed tannins based on biphenyl and o-terphenyl

1983 • 17 citations

The structures of two proanthocyanidins from Julbernadia globiflora

1969 • 17 citations

Reaction of flavanoids with mercaptoacetic acid

1969 • 17 citations

Synthesis of condensed tannins. Part 16. Stereochemical differentiation of the first ‘angular’(2S,3R)-profisetinidin tetraflavanoids from Rhus lancea(karree) and the varying dynamic behaviour of their derivatives

1985 • 16 citations

Flavologlycan: A novel glycoconjugate from leaves of mangrove (Rhizophora stylosa Griff)

1986 • 16 citations

Oligomeric flavanoids. Part 2. The first profisetinidins with dihydroflavonol constituent units

1988 • 16 citations

Contribution à l'étude du comportement de la catéchine en milieu alcalin

1977 • 16 citations

Biflavonoids

1982 • 15 citations

Proanthocyanidins in the Bark of Saraca asoca Roxb. de Wilde

1985 • 15 citations

Flavanols, as plant growth inhibitors from roots of peach, Prunus persica batsh. cv. "Hakuto".

1982 • 15 citations

Molecular weight averages and 13C NMR intensities provide evidence for branching in proanthocyanidin polymers

1984 • 14 citations

Assessment by molecular mechanics of the preferred conformations of the sixteen C(4)–C(6) and C(4)–C(8) linked dimers of (+)-catechin and (–)-epicatechin with axial or equatorial dihydroxyphenyl substituents at C(2)

1987 • 14 citations

¹³C‐NMR‐Spektroskopische Konstitutionsermittlung der C₃₀H₂₄O₁₂‐Procyanidine

1973 • 14 citations

Isolierung eines kristallisierten dehydrierungsdimeren aus (+)-catechin

1968 • 14 citations

Structure and function in the biomimetic synthesis of linear, angular and branched condensed tannins

1982 • 14 citations

Cleavage of proanthocyanidins with thioglycollic acid

1968 • 13 citations

Absolute configuration of atropisomeric m-terphenyl-type flavan-3-ols

1987 • 12 citations

Synthesis of condensed tannins. Part 20. Cycloconformations and conformational stability among derivatives of ‘angular’ tetraflavanoid profisetinidins

1987 • 12 citations

Synthesis of condensed tannis. Part 8. The first ‘Branched’[4,6 : 4,8 : 4,6]-tetraflavanoid. Coupling sequence and absolute configuration

1983 • 12 citations

The Direct Biomimetic Synthesis, Structure and Absolute Configuration of Angular and Linear Condensed Tannins

1982 • 12 citations

Aufklärung der Molekularstruktur des Dehydro-dicatechins A durch Röntgenstrukturanalyse seines Bromheptamethyläthers

1972 • 12 citations

Dioxan-linked biflavanoid from the heartwood of Acacia mearnsii

1969 • 11 citations

Ein Catechintrimer aus der Eichenrinde V. Mitt.

1974 • 10 citations

A biflavanoid proanthocyanidin carboxylic acid and related biflavanoids from Acacia luederitzii Engl. var. retinens(Sim) J. Ross & Brenan

1970 • 10 citations

[2′,2′]-(+)-Catechin-(+)-taxifolin from commercial willow bark: structure, bonding positions and oxidative cleavage

1988 • 9 citations

Oligomeric isoflavonoids. Part 1. Structure and synthesis of the first (2,3′)-isoflavone-isoflavan dimer

1988 • 9 citations

The Phenolic Extractives in Southern Red Oak (Quercus falcataMichx. var.falcata) Bark

1989 • 8 citations

Cycloconformations of two tetraflavaniod profisetinidin condensed tannins

1986 • 8 citations

Flavanols, as Plant Growth Inhibitors from Roots of Peach,Prunus persicaBatsh. cv. ‘Hakuto ’

1982 • 7 citations

Activation of Some Condensed Tannins via Facile Ring Isomerizations

1989 • 5 citations