4.Water Soluble Constituents From Japanese Honeysuckle(Lonicera japonica)
Hongxiang LOU ; Weijun LANG ; Mujiam LU
Chinese Traditional and Herbal Drugs 1994;0(04):-
From the water soluble extract of Flos Lonicera japonica Thunb.,three triterpenoid saponins were isolated. On the basis of detailed analysis of 1HNMR, 13CNMR, 1H-1HCOSY, HMBC, HMQC, FAB MS, their structures were decided as 3-O-?- L-rhamnopyranosyl-(1→2)-?-L-arabinopyranosyl hederagenin 28-O-?-Dxylpyranosyl (1→6 )-?-D-glucopyranosyl ester (Ⅰ), 3-O-?-L-arabinopyranosyl hederagenin 28-O-?-L-rhamnopyranosyl (1→2) [?-D-xylpyranosyl (1→6)] -?-glucopyranosyl ester (Ⅱ) a nd 3-O-?-L-rhamnopyranosyl (1→2) -?-L-arabinopyranosyl hederagenin 28-O-?-L-rhamnopyranosyl (1→2)[?-D-xylpyranosyl (1→6)]?-D-glucopyranosyl ester(Ⅲ), and chlorogenin tetraacetate (Ⅳ). Pharmacological experiment showed thatthese compounds had cytoprotective effects against carbon tetrachloride induced hepatic injury.
6.Protective effect of ginkgolide on renal failure induced by adenine
Shiling ZHANG ; Hongxiang LOU ; Congran LI ;
Chinese Traditional Patent Medicine 1992;0(02):-
Objective: To study the protective effect of ginkgolide on rat's renal failure induced by adenine.Methods: The chronic renal functional failure model of rat was established with adenine. Its urea nitrogen (BUN), reatinine (Crea), Cholesterin (CH), total protein (TP), and albumin (ALP) in blood were determined. The pathologic changes were also observed. Results: Ginkgolide has effects on renal failure caused by adenine. Low and high dose groups decrease BUN. Crea, low dose group decrese CH, high dose group increase numbers of kindney glomerulus.Conclusion: Ginkgolide has protective effect on rat's renal failure induced by adenine.
7.Studies on chemical constituents of Frullania muscicola
Guangyao LI ; Hongxiang LOU ; Hao WANG ;
Chinese Traditional and Herbal Drugs 1994;0(08):-
Object To study the chemical constituents of Frullania muscicola Steph (Frullaniaceae) Methods Seven compounds were obtained from the petroleum ether extract of F muscicola by repeated chromatography over silica gel and Sephadex LH 20 Their structures were identified by analysis of their spectral data and chemical reactions Results Three steroids and four flavonoids had been isolated and their structures were identified as: stigmasterol arachidate (Ⅰ), sitosterol (Ⅱ), apigenin 7, 4′ dimethyl ethers (Ⅲ), scutellarin 6, 4′ dimethyl ethers (Ⅳ), 6 hydroxyluteolin 6, 3′ dimethyl ethers (Ⅴ), scutellarin 6 methyl ether (Ⅵ), and daucosterol (Ⅶ) Conclusion Compound I was new and the other six were obtained from this plant for the first time
8.Absorption of curcumin microemulsion in vivo
Jing CUI ; Guangxi ZHAI ; Yu ZHAO ; Hongxiang LOU
Chinese Traditional and Herbal Drugs 1994;0(03):-
Objective To prepare the curcumin self-microemulsion, observe the morphology and size diameter distribution of the microemulsion, and compare the absorption kinetics of curcumin microemulsion and micelle. To investigate the best absorption segment of curcumin microemulsion in intestnum tenue and the absorption of curcumin self-microemulsion in mouse gastrointestinal tract. MethodsThe intestine in rats was cannulated in situ recirculation. The absorption of curcumin microemulsion was calculated by its decrement in intestnum tenue.The inabsorbable curcumin in all content together with feces in mouse gastrointestinal tract was obtained and used to calculate the absorption rate of curcumin. ResultsThe curcumin microemulsion presented as small spherical drops or something similar under transmission electron microscope (TEM) with the average diameter of about 21.6 nm. The absorption constants of curcumin microemulsion and micelle was 0.042 5 and 0.019 5 /h , the main segments of curcumin microemulsion absorption were intestinum duodenum and intestinum jejunum. The absorption rate of curcumin self-microemulsion was 2.5 times as much as curcumin. ConclusionThe curcumin self-microemulsion could improve the absorption of curcumin in vivo in animal evidently.
9.Study on IR fingerprint of Tongren Wujibaifeng Pills and Xiaoshuanzaizao Pills
Jinguo TIAN ; Jian REN ; Yianhui GAO ; Hongxiang LOU ; Jing ZHANG ; Aiping HU ;
Chinese Traditional Patent Medicine 1992;0(12):-
Objective: To identify Tongren Wujibaifeng Pills and Xiaoshuanzaizao Pills respectively by analysis of IR fingerprint. Methods: Both drugs were extracted with hexane, ether and butanone and then the extracts obtained were measured with FT IR spectrometer. Results: By analizing IR fingerprint of 25 batches Tongren Wujibaifeng Pills and 31 batches Xiaoshuanzaizao Pills, we found that different batches of the same drug have stable and repeatable fingerprint. Conclusion: By using IR fingerprint, either Tongren Wujibaifeng Pills and Xiaoshuanzaizao Pills can be identified. It provides a rapid method for drug identification and quality control.
10.Study on IR fingerprint of 13 kinds of Chinese medicinal granules
Jinguo TIAN ; Wenrong ZHU ; Jian REN ; Bo TANG ; Yianhui GAO ; Hongxiang LOU ;
Chinese Traditional Patent Medicine 1992;0(07):-
AIM: To identify the Chinese medicinal granule by measuring IR fingerprints. METHODS: 13 kinds of granules were extracted with butanone respectively and then the obtained extracts were measured with the FT IR spectrometer. RESULTS: By IR fingerprint of 13 kinds of granules drugs, different batches of the same crude drug had a stable and repeatable fingerprint. CONCLUSION: By using IR fingerprint, Chinese medicinal granule can be identified and provides a rapid method for drug identification and quality control.