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Chinese gallotannin

Figure 1. Structure of a gallotannin typical of Chinese gallotannin, found, e.g., in galls of Rhus semialata. Note the characteristic meta-depside linkages of the galloyl residues at C-2. Figure 1. Structure of a gallotannin typical of Chinese gallotannin, found, e.g., in galls of Rhus semialata. Note the characteristic meta-depside linkages of the galloyl residues at C-2.
Chinese gallotannin see Tannins Chirality the necessary and sufficient condition for optical activity (rotation of the plane of polarized light). C. means handedness (from the Greek Kelp = hand). Chiral molecules have no second order symmetry element (center, plane or axis of symmetry) and exist in two mirror-image forms (enantiomers) which cannot be rotated in such a way as to coincide. Most chiral compounds contain an asymmetrically substituted C-atom, i.e. a tetrahedral C-atom with 4 different substituents [E.L.EIiel, S.H.Wilen L.N.Mander Stereochemistry of Organic Compounds, Wiley Sons New York, 1994]... [Pg.111]

Tannins and related compounds. Part 5. Structure of Chinese gallotannin. J. Chem. Soc. Perkin Trans. 1, 2963-2968. [Pg.199]

Britton G, Haslam E, Crabtree P W, Stangroom J E 1966 Gallotannins. Part 13. The structure of Chinese gallotannin. Evidence for a polygalloyl chain. J Chem Soc (C) 783-790... [Pg.434]

The gallotannin from Chinese leaf galls (Rhui semialata) contains 8-10 gallic acid residues for each glucose residue. A large part of the gallic acid... [Pg.26]

Tannic acid. Gallotannic acid. Gallotannin. Chinese tannin. Glycerite. FEMA 3042 [1401-55-4]... [Pg.897]

Armitage R, Bayliss G S, Gramshaw J G, Haslam E, Haworth R D, Jones K, Searle T 1961 GallotanninS) Part 3. The Constitution of Chinese,Tbrkish, sumac and tara tannins. J Chem Soc 1842-1853... [Pg.433]

Tannic acid. Gallotannic acid. Gallotannin. Chinese tannin... [Pg.871]

See other pages where Chinese gallotannin is mentioned: [Pg.595]    [Pg.26]    [Pg.27]    [Pg.378]    [Pg.379]    [Pg.661]    [Pg.661]    [Pg.898]    [Pg.161]    [Pg.412]    [Pg.17]    [Pg.42]    [Pg.871]    [Pg.595]    [Pg.26]    [Pg.27]    [Pg.378]    [Pg.379]    [Pg.661]    [Pg.661]    [Pg.898]    [Pg.161]    [Pg.412]    [Pg.17]    [Pg.42]    [Pg.871]    [Pg.559]    [Pg.561]    [Pg.586]    [Pg.496]    [Pg.1431]    [Pg.1976]    [Pg.76]    [Pg.42]   
See also in sourсe #XX -- [ Pg.412 ]

See also in sourсe #XX -- [ Pg.17 ]



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