[Study on chemical constituents from essential oil of Hypericum patulum].
OBJECTIVE
To investigate the chemical constituents from the essential oil of Hypericum patulum, and provide the scientific basis for exploitation.


METHODS
The essential oil was extracted by steam distillation. The chemical constituents of the essential oil were analyzed by GC-MS. The relative contents of these constituents were calculated using square peaks to normalization.


RESULTS
72 peaks were separated and 24 constituents were identified, which constituted about 79.50% of the total essential oil.


CONCLUSIONS
The main constituents are alpha-pinene (18.14%), 2,4a,5,6,7,8-hexahydro-3,5,5,9-tetramethyl-,(R)-1H-benzocycloheptene (13.64%), beta-caryophyllene (9.41%), longifolene (6.23%), etc.
Zhang
Lan-sheng
LS
School of Pharmacy, Dali University, Dali 671000, China. zlslj0888@yahoo.com.cn
Dong
Guang-ping
GP
Liu
Guang-ming
GM
D008401:Gas Chromatography-Mass Spectrometry; D020902:Hypericum / Q000737:chemistry*; D015394:Molecular Structure; D008970:Molecular Weight; D039821:Monoterpenes / Q000032:analysis*; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000032:analysis
D039821:Monoterpenes; D009822:Oils, Volatile; D012717:Sesquiterpenes