[Studies on the chemical constituents of Pseudotsuga sinensis].
OBJECTIVE
To study the chemical constituents of Pseudotsuga sinensis Dode (Pinaceae).


METHODS
To separate the constituents of P. sinensis by using various kinds of chromatography and identify their structures on the basis of spectral analysis.


RESULTS
Six compounds were isolated from P. sinensis. Their structures were established as 5,7,4'-trihydroxy-6-methylflavanone (poriol, I), 3,5,7,3',4'- pentahydroxyflavonone (quercetin, II), 5,7,3',5'-tetrahydroxy-6- methylflavanone (III), 5,7,3',5'-tetrahydroxyflavanone (IV), 3,5,7,3',5'-pentahydroxyflavanone (V) and 5-hydroxy-6-methylchromone-7-O-beta-D-glucopyranoside (VI) based on the analysis of spectral data of IR, UV, MS, 1D and 2D-NMR.


CONCLUSIONS
Compounds III and VI are new compounds. All of six compounds were isolated from this plant for the first time.
Yi
Jin-hai
JH
Sichuan Institute of Chinese Materia Medica, Chengdu 610041, China.
Zhang
Guo-lin
GL
Li
Bo-gang
BG
D002867:Chromones / Q000737:chemistry / Q000302:isolation & purification*; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D028224:Pseudotsuga / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification
C479302:5,7,3',5'-tetrahydroxy-6-methylflavanone; C479303:5,7,3',5'-tetrahydroxyflavanone; C479340:5-hydroxy-6-methylchromone-7-O-glucopyranoside; D002867:Chromones; D044950:Flavanones; D005960:Glucosides; D011794:Quercetin