title: [Studies on the chemical constituents of the bark of Betula platyphylla].
abstract: The paper deals with the saperating of free phenolic hydroxyl dipolymer condensution-tannis B1, B2 and the compounds (+)-catechin, (-)-epicatechin from the bark of Betula platyphylla. Their structures have been evaluated by means of 1H, 13C-NMR technique and chemical ways.
authors.affiliation: Jiamusi Medical College, Heilongjiang 154003.
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: Zhou
mesh_terms: D029662:Betula / Q000737:chemistry*; D002392:Catechin / Q000031:analogs & derivatives / Q000302:isolation & purification*; D024301:Plant Bark / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods
chemical_list: D002392:Catechin