[Caffeoylquinic acid derivatives from leaves of Lonicera japonica].
OBJECTIVE
To study the caffeoylquinic acid derivatives from the leaves of Lonicera japonica.


METHODS
The compounds were isolated by column chromatography and identified on the basis of physico-chemical constants and spectral analysis.


RESULTS
Five caffeoylquinic acid derivatives were isolated,and their structures were identified as 3,4-di-O-caffeoyl quinic acid methyl ester (1), 5-O-caffeoyl quinic acid methyl ester (2), 3,4-di-O-caffeoyl quinic acid (3), 1,3-di-O-caffeoyl quinic acid (4) and chlorogenic acid (5), respectively.


CONCLUSIONS
Compounds 2, 4 were obtained from this genus for the first time. Compounds 1, 3 were obtained from this plant for the first time.
Ma
Junli
J
Tangshan Vocational and Technical College, Tangshan 063000, China. woshimajunli@163.com
Li
Ning
N
Li
Xian
X
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D031239:Lonicera / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D011801:Quinic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification
D004365:Drugs, Chinese Herbal; C472707:caffeoylquinic acid; D011801:Quinic Acid