[Studies on chemical constituents of Pinus armandii].
OBJECTIVE
To study chemical constituents from pine cone of Pinus armandii Franch.


METHODS
The constituents were isolated by chromatographic method and the structures were identified on the basis of spectral analysis.


RESULTS
Four compounds were identified as 7-oxo-12alpha, 13beta-dihydroxyabiet-8(14)-en18-oic acid (I), 7-oxo-13beta-hydroxyabiet-8 (14)-en-18-oic acid (II), 8 (14)-podocarpen-13-on-18-oic acid (III) and lambertianic acid (IV).


CONCLUSIONS
Compound I is a new diterpenoid and compounds II, III were isolated from this plant for the first time.
Yang
Xin
X
School of Bioengineering, Southern Yangtze University, Wuxi 214036, China.
Ding
Yi
Y
Sun
Zhi-hao
ZH
Zhang
Dong-ming
DM
D002264:Carboxylic Acids / Q000737:chemistry / Q000302:isolation & purification; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry; D008968:Molecular Conformation; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification; D028223:Pinus / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*
C514829:7-oxo-12alpha,13beta-dihydroxyabiet-8(14)-en18-oic acid; C514830:7-oxo-13beta-hydroxyabiet-8(14)-en-18-oic acid; D002264:Carboxylic Acids; D004224:Diterpenes; D009281:Naphthalenes; C421442:lambertianic acid