Studies in Polyphenol Chemistry and Bioactivity. 3.^1,2 Stereocontrolled Synthesis of Epicatechin-4α,8-epicatechin, an Unnatural Isomer of the B-Type Procyanidins

Preparation and use of tetra-n-butylammonium per-ruthenate (TBAP reagent) and tetra-n-propylammonium per-ruthenate (TPAP reagent) as new catalytic oxidants for alcohols

1987 • 652 citations

Studies in Polyphenol Chemistry and Bioactivity. 1. Preparation of Building Blocks from (+)-Catechin. Procyanidin Formation. Synthesis of the Cancer Cell Growth Inhibitor, 3-O-Galloyl-(2R,3R)-epicatechin-4β,8-[3-O-galloyl-(2R,3R)-epicatechin]

1999 • 150 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

Carbonium ion-silane hydride transfer reactions. V. tert-Alkyl cations

1971 • 73 citations

Synthetic proanthocyanidin

1966 • 55 citations

Synthesis and characterization of arylcopper compounds containing the methoxy or dimethylamino group as a built-in ligand

1975 • 50 citations

Procyanidin polymers of Douglas fir bark: Structure from degradation with phloroglucinol

1989 • 49 citations

Studies in Polyphenol Chemistry and Bioactivity. 2.¹ Establishment of Interflavan Linkage Regio- and Stereochemistry by Oxidative Degradation of an O-Alkylated Derivative of Procyanidin B₂ to (R)-(−)-2,4-Diphenylbutyric Acid

2000 • 43 citations

1016. The stereochemistry of some catechin derivatives

1963 • 38 citations

Anthocyanidins and related compounds—XII

1968 • 37 citations

Stereospecific functionalization of the heterocyclic ring systems of flavan-3-OL and [4,8]-biflavan-3-OL derivatives with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)

1985 • 35 citations

X-Ray structure, conformation, and absolute configuration of 8-bromotetra-O-methyl-(+)-catechin

1978 • 34 citations

Synthesis of Phenolic Acid Esters. I. Depsides¹

1943 • 29 citations

Synthesis of a Condensed Tannin Model Compound, 4-(2,4,6-Trihydroxyphenyl)Flavan-3,3′,4′,5,7-Pentaol

1989 • 27 citations

Regio- and stereoselective oxidation of flavan-3-ol- 4-arylflavan-3-ol- and biflavanoid derivatives with 2,3-dichloro-56-dicyano-1,4-benzoquinone (DDQ)

1991 • 25 citations

A novel pyrogallol A-ring proanthocyanidin dimer from Acacia melanoxylon

1986 • 24 citations

Zur Kenntnis der Proanthocyanidine, XVI. Synthese des Octamethyl‐diacetyl‐procyanidins B 3

1970 • 20 citations

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

1983 • 18 citations

Zur Kenntniss des Catechins

1902 • 16 citations

Acid-catalyzed rearrangements of flavan-4-phloroglucinol derivatives to novel 6-hydroxyphenyl-6a,11b-dihydro-6H-[1]benzofuro[2,3-c] chromenes and hydroxyphenyl-3,2′-spirobi[dihydro[1]benzofurans]

1997 • 15 citations

Proton magnetic resonance spectra of catechin and bromocatechin derivatives: C₆- vs. C₈-substitution

1986 • 13 citations

Phenolische Naturstoffe, IX. Die diastereomeren Catechin‐3‐glucoside und ‐3‐gallate

1968 • 12 citations