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Objective: To study the chemical constituents in roots of Peucedanum praeruptorum from Henan., Method: The constituents were isolated by column chromatography on silica gel and ODS, and identified by NMR, MS spectroscopic methods., Result: Six compounds, Pd-I b(1), marmesinsin (2), rutarin (3), isorutarin (4), 4H-1-benzopyran-4-one, 5-hydroxy-6-methoxy-2-phenyl-7-O-alpha-D-glucuronyl methyl ester (5), 4H-1-benzopyran-4-one, 5-hydroxy-6-methoxy-2-phenyl-7-O-alpha-D-glucuronyl acid (6) were isolated and identified., Conclusion: Compound 5 was a new compound, compounds 5 and 6 were isolated from Peucedanum plant for the first time.

Objective: To study the chemical constituents in roots of Peucedanum praeruptorum., Method: The constituents were isolated by column chromatography on silica gel and ODS, and identified by spectroscopic methods., Result: Seven compounds, alpha-D-glucopyranose-1-hexadecanoate (1), D-mannitol monohexadecanoate (2), adenosine (3), butyric acid (4), eleutheroside B, (5), apiosylskimmin (6), and mannitol (7) were isolated and identified., Conclusion: Compounds 1-5 were isolated from this plant for the first time.

Objective: To isolate and identify the chemical constituents from the roots of Peucedantu praeruptorum., Method: The constituents were isolated by column chromatography on silica gel and ODS, and identified by NMR, MS spectroscopic methods., Result: Eight compounds, (-) sclerodin (1), palmitic acid (2), (+)-praeruptorin E (3), bergapten (4), imperatorin (5), 2,6-dimethyl quinoline (6), tetracosanoic acid (7), and daucosterol (8), were isolated and identified., Conclusion: Compounds 1,5-7 were isolated from this plant for the first time.

Objective: To study the chemical constituents in roots of Peucedanum praeruptorum., Method: The constituents were isolated by column chromatography on silica gel and ODS, and identified by MS spectroscopic methods including NMR and., Result: Seven compounds, acetylatractylodinol (I), tanshinone II A (II), tanshinone I (III), cis-3', 4'-diisovalerylkhellactone(IV), cis-3',4'-disenecioylkhellactone(V), (+)praeruptorin B(VI), and beta-sitosterol(V), were isolated and identified., Conclusion: Compounds I, II, III, IV were isolated from this plant for the first time.

Objective: To work out a qualitay standard of Radix Angelicae dahuricae., Method: TLC and HPLC were adopted., Result: Four coumerin compounds were identified by TLC, and the contents of two compounds were determined by HPLC., Conclusion: Imperatorin, isoimperatorin, byakangelicin and oxypeucedaninhydrate can be found simultaneously in Radix Angelicae dahuricae. The contents of imperatorin and isoimperitorin are not lower than 0.1% and 0.04% respectively.

Objective: To study the chemical constituents of Ligusticum chuanxiong., Method: The constituents were separated and purified by column chromatography with silica gel and ODS, and identified by NMR, MS spectral data., Result: Eight compounds were isolated and identified as Ligustilide(I), 4,5-dihydro-3-butylphthalide(II), Z, Z'-6,6',7,3 alpha-diligustili-de(III), Z-6,8',7,3'-diligustilide(IV), Z'-3,8-dihydro-6,6'7,3' alpha-diligustilide(V), 4-hydroxy-3-butylphthalide(VI), ferulic acid(VII) and Xiongterpene(VIII)., Conclusion: Compound VIII is a new compound.

Objective: To confirm the original plant of traditional Chinese drug "Bai Zhi" and to inquire into the cultivation history of "Bai Zhi" and evolution of closely related wild plants of "Bai Zhi"., Method: Various research results obtained were synthesized and discussed according to historical and current data., Result: Obtained research results, historical and current data showed almost no difference., Conclusion: 1. Angelica dahurica var. formosana must be the original plant of traditional Chinese drug "Bai Zhi". 2. A. porphyrocaulis should be treated as a variety of A. dahurica, named as A. dahurica var. porphyrocaulis. 3. 4 sorts of Chinese traditional drug "Bai Zhi" (Chuang Bai Zhi, Hang Bai Zhi, Qi Bai Zhi and Yu Bai Zhi) should not be taxonomically distinguished. The history of utilization and cultivation of "Bai Zhi", and the evolutional relation of the closely related wild plants of "Bai Zhi" (A. dahurica, A. dahurica var. formosana, and A. dahurica var. porphyrocaulis) were also discussed.

Objective: To provide chemical data for confirming the original plant of traditional Chinese drug "Bai Zhi"., Method: Coumarins of 4 cultivated breeds of "Bai Zhi" and 3 closely related wild plants, together with other 2 Angelica plants were compared by HPLC., Result: According to coumarin patterns, 4 cultivated breeds of "Bai Zhi" and 3 closely related wild plants could be divided into 3 groups: 1. 4 cultivated breeds of "Bai Zhi" ("Chuan Bai Zhi", "Hang Bai Zhi", "Qi Bai Zhi" and "Yu Bai Zhi") and Angelica dahurica var. formosana; 2. A. dahurica; 3. A. porphyrocaulis., Conclusion: In point of the coumarin components, A. dahurica var. formosana is closer to traditional Chinese drug "Bai Zhi" than the others.