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Yan-jing Bai

Publications and source records attributed to Yan-jing Bai.

3 recordsLinked to original sources
PubMed2003

[Structure identification of jujuboside E].

AIM: To study the chemical constituents of the seeds of Ziziphus jujuba Mill var. spinosa (Bunge) Hu ex. H.F. Chou. METHODS: To separate the constituents by using various kinds of chromatography methods and identify their structures on the basis of spectral analysis. RESULTS: Seven compounds were isolated. Their structures were established as jujuboside E (1), jujuboside B (2), jujuboside A (3), betulic acid (4), stearic acid (5), sucrose (6) and inosine (7). CONCLUSION: Compound 1 is a new compound named jujuboside E. Compounds 5, 6, 7 were isolated for the first time from this plant.

Inosine↗
PubMed2002

[Studies on the phenylpropanoids from Eucommia ulmoides].

OBJECTIVE: To study the chemical constituents from the leaves of Eucommia ulmoides. METHOD: The constituents were isolated by chromatography method and the structures were identified on the basis of spectral analysis. RESULT: Six compounds, ursolic acid(1), beta-sitosterol(2), p-coumaric(3), caffeic acid ethyl ester(4), chlorogenic acid(5) and syringin(6) were obtained. CONCLUSION: Compound 3, 4, 5 were obtained from the plant for the first time.

Caffeic Acids↗