Résumé
Objective: To analyze the quality of Angelicae Dahuricae Radix (ADR) from national drug evaluation sampling, continuously improve and revise the standard determination method, and ensure the safety of public drug use, six index components of ADR medicinal material and decoction pieces were determined by combining HPLC fingerprint chromatography and quantitative analysis of multi-components by single marker (QAMS). Methods: The determination and exploratory study were carried out according to the National Standard. The establishment of steamed Angelicae dahurica HPLC fingerprint, method for multiple assessment of six index components to conduct a methodological survey determination of multi-index component content of 20 batches of Angelicae dahurica tablets, the final determination of the quality of Angelicae dahurica. Result:s A total of 239 batches of ADR were received from 189 enterprises, in which 225 batches were qualified and 14 batches were unqualified. The qualified rate was 94%. A method that determined content of six kinds of coumarin in ADR decoction pieces using imperatorin as control was established, which could solve the problem of difficulty in obtaining control and consuming long determination time. It would better indicate the drug quality. Conclusio:n The method we had established could be used in qualitative and quantitative analysis of oxypeucedanin hydrate, byakangelicin, oxypeucedanin, berapten, imperatorin and isoimperatorin in ADR decoction pieces. Through this random inspection, it is found that there were still some quality problems in ADR decoction pieces. The quality supervision of traditional Chinese medicine should be strengthened further.
Résumé
Objective: To investigate the chemical constituents of Notopterygium incisum. Methods: The chemical constituents were isolated by silica gel column chromatography, HPLC, and Sephadex LH-20 column chromatography. Their structures were identified on the basis of spectral data analysis. Results: Fourteen compounds were isolated and identified as 7-hydroxycoumarin (1), 5,7-dimethoxycoumarin (2), nodakenetin (3), bergaptol (4), bergapten (5), isopimpinellin (6), byakangelicin (7), (+)-cis-khellactone (8), (-)-trans-khellactone (9), p-hydroxypenehtyl anisate (10), 5-methoxy-8-hydroxypsoralen (11), ferulic acid (12), isoimperatorin (13), and isopsoralen (14). Conclusion: Compounds 2, 7-9, and 11 are isolated from the plants of Notopterygium H. Boiss. for the first time.
Résumé
To determine the contents of oxypeucedanin, oxypeucedanin hydrate, byakangelicol and byak-angelicin both before and after Angelicae Dahuricae Radix was stewed with yellow rice wine by high-performance liquid chromatography, and study the mutual transformation mechanisms of oxypeucedanin into oxypeucedanin hydrate, as well as byakangelicol into byak-angelicin. The research results indicated that the contents of oxypeucedanin and byakangelicol were decreased, but the contents of oxypeucedanin hydrate and byak-angelicin were increased after Angelicae Dahuricae Radix was processed with yellow rice wine. The contents' changes of these chemical compounds were due to the ring opening reaction of epoxy compounds, such as oxypeucedanin and byakangelicol under the weak acidity and heating conditions of yellow rice wine. This research could provide a scientific basis for the processing mechanism of Angelicae Dahuricae Radix with yellow rice wine stewing.