Biosynthesis of gallotannins: formation of polygalloylglucoses by enzymatic acylation of 1,2,3,4,6-penta-O-galloylglucose.
Enzyme preparations from leaves of Rhus typhina L. (sumach) catalyzed the galloylation of 1,2,3,4,6-penta-O-galloyl-beta-D-glucopyranose in the presence of the acyl donor beta-glucogallin (1-O-galloyl-beta-D-glucopyranose), yielding a variety of oligomeric gallotannins (hexa- to nonagalloylglucoses) as reaction products.
Hofmann
A S
AS
Universität Ulm, Abteilung Allgemeine Botanik, Federal Republic of Germany.
Gross
G G
GG
D000215:Acylation; D002236:Carbohydrate Conformation; D002851:Chromatography, High Pressure Liquid; D047348:Hydrolyzable Tannins / Q000096:biosynthesis* / Q000302:isolation & purification; D007700:Kinetics; D015394:Molecular Structure; D010947:Plants, Toxic; D013634:Tannins / Q000378:metabolism*; D012251:Toxicodendron / Q000378:metabolism*
D047348:Hydrolyzable Tannins; D013634:Tannins; C435084:pentagalloylglucose