The Structural nature of Tctracctron sinense MWL is characterized by means of Chemical analysis.GC,IR,’H NMR and <sup>C</sup>（13） NMR spectra.The researches indicated that the MWL is of guaiacyl—syring...The Structural nature of Tctracctron sinense MWL is characterized by means of Chemical analysis.GC,IR,’H NMR and <sup>C</sup>（13） NMR spectra.The researches indicated that the MWL is of guaiacyl—syringyl type.The main connective form between structural units is β—O—4aryl ether bonds.The quantity of β—O—4 and 5—5 substructures is 0.53/C<sub>9</sub> and 0.06/C<sub>9</sub>,respectively.The alipatic and phenolic hydroxy contents are respectively.The OCH<sub>3</sub> content is estimated by <sup>C</sup>（13）NMR is spectrum （1.14/C<sub>9</sub>）,which is con-sistent with chemical method（1.11/C<sub>9</sub>） The degree of condensetion of the MWL is 0.51/C<sub>9</sub>（from ’HNMR）,which is consistent with the result from <sup>C</sup>（13）NMR.展开更多
文摘The Structural nature of Tctracctron sinense MWL is characterized by means of Chemical analysis.GC,IR,’H NMR and <sup>C</sup>（13） NMR spectra.The researches indicated that the MWL is of guaiacyl—syringyl type.The main connective form between structural units is β—O—4aryl ether bonds.The quantity of β—O—4 and 5—5 substructures is 0.53/C<sub>9</sub> and 0.06/C<sub>9</sub>,respectively.The alipatic and phenolic hydroxy contents are respectively.The OCH<sub>3</sub> content is estimated by <sup>C</sup>（13）NMR is spectrum （1.14/C<sub>9</sub>）,which is con-sistent with chemical method（1.11/C<sub>9</sub>） The degree of condensetion of the MWL is 0.51/C<sub>9</sub>（from ’HNMR）,which is consistent with the result from <sup>C</sup>（13）NMR.
