Coumarin Glycosides Research Articles

Mori Ramulus (Chin.Ph.)-the Dried Twigs of Morus alba L./Part 1: Discovery of Two Novel Coumarin Glycosides from the Anti-Hyperuricemic Ethanol Extract.

In Traditional Chinese Medicine (TCM), Mori ramulus (Chin.Ph.)—the dried twigs of Morus alba L.—is extensively used as an antirheumatic agent and also finds additional use in asthma therapy. As a pathological high xanthine oxidase (XO, EC 1.1.3.22) activity is strongly correlated to hyperuricemy and gout, standard anti-hyperuremic therapy typically involves XO inhibitors like allopurinol, which often cause adverse effects by inhibiting other enzymes involved in purine metabolism. Mori ramulus may therefore be a promissing source for the development of new antirheumatic therapeutics with less side effects. Coumarins, one of the dominant groups of bioactive constituents of M. alba, have been demonstrated to possess anti-inflammatory, antiplatelet aggregation, antitumor, and acetylcholinesterase (AChE) inhibitory activities. The combination of HPLC (DAD) and Q-TOF technique could give excellent separating and good structural characterization abilities which make it suitable to analyze complex multi-herbal extracts in TCM. The aim of this study was to develop a HPLC (DAD)/ESI-Q-TOF-MS/MS method for the identification and profiling of pharmacologically active coumarin glycosides in Mori ramulus refined extracts for used in TCM. This HPLC (DAD)/ESI-Q-TOF-MS/MS method provided a rapid and accurate method for identification of coumarin glycosides—including new natural products described here for the first time—in the crude extract of M. alba L. In the course of this project, two novel natural products moriramulosid A (umbelliferone-6-β-d-apiofuranosyl-(1→6)-β-d-glucopyranoside) and moriramulosid B (6-[[6-O-(6-deoxy-α-l-mannopyranosyl)-β-d-glucopyranosyl]oxy]-2H-1-benzopyran-1-one) were newly discovered and the known natural product Scopolin was identified in M. alba L. for the first time.

Chemical Constituents from Stems of Pileostegia viburnoides

Phytochemical investigation on the stems of Pileostegia viburnoides Hook.f.et Thoms led to the isolation of twelve compounds, including two steroids (1 and 10), two fatty compounds (2 and 12), seven triterpenoids (3–9), and one coumarin glycoside (11). 24-methylene-5α-dammara-20(21)-en-3β-yl acetate (5), a rare dammarane-tetracyclic triterpene had been first reported just according to the typical 1H-NMR signals analysis, melting point and optical rotation in 1975. However, the complete and reliable NMR and mass data were still unknown. This is the first time to identify the planar and spatial structures of compound 5 by the analysis of 1D-, 2D-NMR, mass data and other physicochemical properties, as well as by comparison of the spectral data with the literature. Further more, the anti-inflammatory and anti-neuroinflammatory activities of dammarane-type triterpenes 4 and 5 were evaluated.

Coumarin glycosides from Hydrangea paniculata slow down the progression of diabetic nephropathy by targeting Nrf2 anti-oxidation and smad2/3-mediated profibrosis

BackgroundWater extract of Hydrangea paniculata (HP) stem, rich in coumarin glycosides, has been demonstrated to have renal protective effect in several experimental kidney injury animal models. Currently, it is under pre-clinical development as a class 5 herbal drug against membranous nephropathy. However, whether it also benefits diabetic nephropathy (DN) is not clear. PurposeThis study was performed to investigate the protective effect of HP on streptozotocin-induced experimental DN, and further understand its molecular mechanisms. MethodsIn the present study, type 1 diabetes rat model was established by the intraperitoneal injection of streptozotocin. HP was orally administered every day for three months. Biochemical analysis and histopathological staining were conducted to evaluate the renal functions. In vivo pharmacokinetic study was conducted to analyse the metabolites of HP with high blood drug concentration. In vitro assay using these metabolites was performed to analyse their ability to reduce reactive oxygen species (ROS) production induced under high glucose (HG) condition by flow cytometry. Reverse transcription-polymerase chain reaction was conducted to analyse the mRNA level of nuclear factor (erythroid-derived 2)-like 2 (Nrf2) and IL6 and western blot was performed to analyse the phosphorylation status of smad 2/3 in HK2 cells under TGFβ1 stimulation. ResultsThe treatment with HP significantly reduced the blood urea nitrogen and serum creatinine content, and urine albumin excretion in diabetic rats, and increased the creatinine clearance rate. Periodic acid-schiff and methenamine staining and immunohistochemistry revealed that HP also ameliorated glomerulosclerosis and tubular vacuolar degeneration, as well as the deposition of fibronectin and collagen IV in the glomeruli. Pharmacokinetic study results revealed that the major coumarin compounds from HP were metabolised into umbelliferone and esculetin. By in vitro assay, umbelliferone and esculetin were found to significantly decrease ROS production induced by HG content, as well as increase the mRNA level of Nrf2. HP and its metabolites also can down-regulate fibronectin secretion in HK2 cells stimulated by TGFβ1 and inhibit smad2/3 phosphorylation. ConclusionHP has beneficial effect on DN by increasing Nrf2 expression and inhibiting TGF-smad signal activation. Further, it can be a novel herbal drug against DN.

PHYSICOCHEMICAL, PHYTOCHEMICALS AND ANTIOXIDANT EVALUATION OF GUAZUMA ULMIFOLIA FRUIT

Objective: The present study was designed to evaluate the physicochemical, qualitative, quantitative analysis and antioxidant activity of ethanol fruit extract of Guazuma ulmifolia. Studies were carried out to detect the bioactive component.Methods: The physiochemical properties such as loss on drying, extractive value for ethyl acetate, acetone, ethanol, total ash, acid insoluble ash, water-soluble ash and PH values; the phytochemical such as tannins, phenol, terpenoids, flavonoids, saponin, quinones, cardiac glycosides, coumarin, steroids and acids were found using standard methods. The total phenol and flavonoid content were estimated by Folinciocalteu and Aluminium chloride by colorimetric method. In vitro antioxidants, properties were evaluated by DPPH and FRAP assay.Results: Phytochemical analysis reveals the availability of secondary metabolites like tannins, phenol, terpenoids, flavonoids, coumarin, steroids, and cardiac glycosides in the different extract. The quantitative analysis for ethanolic fruit extract was done for total phenolic content (TPC), total flavonoids content (TFC). An ethanolic extract found to have high TPC [27.2797±0.1756] than TFC. Antioxidant activity was evaluated by DPPH assay (2, 2-diphenyl-1-picrylhydrazyl-hydrate) and FRAP (ferric Reducing Ability of Plasma).Conclusion: On the basis of this study, it was found that the Guazuma ulmifolia fruits have potential to act as a source of useful drugs due to the presence of various active phytochemical constituent, which will be helpful in preventing various diseases caused by the oxidative stress.

A New cis-Caffeoyl Coumarin Glycoside from the Stem Barks of Fraxinus depauperata

A new cis-caffeoyl coumarin glycoside, cichorigenin-5-O-(4′-cis-caffeoyl)-β-D-glucopyranoside (1), was isolated from the stem barks of Fraxinus depauperata, together with two known coumarins, cichorigenin (2) and esculin (3). The chemical structures of compounds 1–3 were elucidated through spectroscopic and chemical analysis, as well as by comparison with the literature. Compounds 2 and 3 are reported from this species for the first time.

Ceratophyllum demersum a Free-floating Aquatic Plant: A Review

Ceratophyllum demersum is a submerged perennial macrophyte normally grow with the base of its stem buried in sandy or silty substrates. It is typically found floating in stagnant and slow moving water. It is a fragile free-floating underwater rootless, but densely leafy, once a year or continuing freshwater aromatic plant, with leaves so crowded at the apices as to give the impression of a bushy animal tail, reproducing vegetatively and by seed. Hornwort flourishes in shaded, warm and gently flowing (1 cm per second) waters at a pH between 7.6 to 8.8, but does not tolerate turbidity or salinity. This plant oxygenates the water, provides food for aquatic herbivores, and rarely causes problems. The volatile oil, whole plant dry extract analysis by GC-MS, 78 components were detected. The major constituents extracted were hexahydro Acacia acetone content accounted for 16.9%, aldehydes and ketones accounted for 21.44%, terpenes accounted for 11.54%, ester hydrocarbons accounted for 20.06% and the other category accounted for 7.21%. Ceratophyllum demersum chemical composition systems pre-test tube method, found that the plant contains: flavonoids and glycosides, lactones, coumarin glycosides, steroids, terpenoids, sugars, tannins, amino acids, peptides, proteins volatile oil; may contain phenolic compounds, alkaloids; without cardiac glycosides. Decoction of leaf is used as a cardiotonic and to regulate bile secretion. Leaf juice is used to stop vomiting, as cooling agent. It is also used as antitoxic, analgesic, anti-inflammatory, astringent, antiulcer, etc.

Biotransformation and metabolic profile of Xian-Ling-Gu-Bao capsule, a traditional Chinese medicine prescription, with rat intestinal microflora by ultra-performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry analysis.

Xian-Ling-Gu-Bao capsule (XLGB), a well-known traditional Chinese medicine prescription, has been used for the prevention and treatment of osteoporosis. The safety and efficacy of XLGB have been confirmed based on the principle of evidence-based medicine. XLGB is usually administered orally, after which its multiple components are brought into contact with intestinal microflora in the alimentary tract and biotransformed. However, investigations on the comprehensive metabolic profile of XLGB are absent. In this study, 12 representative compounds bearing different typical structures (including iridoid glycosides, prenylated flavonol glycosides, prenylated flavonoids, triterpenoid saponins, steroidal saponins, coumarins and monoterpene phenols) were selected and then investigated for their biotransformation in rat intestinal microflora. In addition, the metabolic profile of XLGB in rat intestinal microflora was investigated by ultra-performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry. As a result, a total of 87 biotransformation components were identified from incubated solutions of 12 representative compounds and XLGB, which underwent 16 metabolic reactions (including deglycosylation, glycosylation, dehydrogenation, hydrogenation, oxidation, epoxidation, hydroxylation, dehydration, hydration, hydrolysis, methylation, isomerization, cyclization, pyrolysis reaction, amino acid conjugation and nucleophilic addition reaction with NH3 ). This demonstrated that the deglycosylation reaction by cleavage of the sugar moieties is the main metabolic pathway of a variety of glycosides, including prenylated flavonol glycosides, coumarin glycosides, iridoid glycosides and saponins. In addition, compared with the biotransformation of 12 representative compounds, a different biotransformed fate was observed in the XLGB incubated samples of rat intestinal microflora. It is worth noting that the amino acid conjugation was first discovered in the metabolism of prenylated flavonol glycosides in rat intestinal microflora.

Analysis of Phytochemical Constituents and Anthelmintic Activity of Leaf Extracts of Mimosa pudica L.

Mimosa pudica L. is commonly called as touch me not plant, a prostrate or semi-erect sub shrub of tropical America and Australia, also found in India. The phytochemical screening of the crude extract showed the presence of carbohydrates, alkaloids, cardiac glycosides, coumarin glycosides, saponins, flavonoids, phytosterols, phenols and tannins, proteins and terpenoids. The methanol extract showed the highest percentage extractive of 11.6. The anthelmintic activity was tested on Indian adult earthworm Pheretima posthuma. The leaf was extracted separately with methanol and distilled water using cold extraction method. Different concentrations (20, 40, 60 and 80 mg/ml) of each extract were tested for anthelmintic activity by determining the time of paralysis and time of death of the worms. The aqueous and methanol extracts showed anthelmintic activity at all concentrations and its activities are well comparable with the standard drug, albendazole (positive control). The methanol extracts showed the highest anthelmintic activity than albendazole as well as the aqueous extract. Tween 20 (1%) with saline was used as negative control did not show any anthelmintic activity.

Traditional Uses, Pharmacological Action and Phytochemical Analysis of Carissa carandas Linn.: A Review

Starting from immemorial time; peoples traditionally used herbs and plants to treat different human and animals ailments. This initiated scientists to investigate on traditional medicinal plants and herbs for biological activities by checking through bioassay and then isolating the bioactive constituents from biologically active medicinal plants and herbs. The different parts of Carissa carandas have been used for various human ailments. It has been used by traditional healers in the treatment of scabies, intestinal worms, pruritus, biliousness, snake-bite/poisoning, astringent, anemia, stomachache, diarrhea, rheumatism, earache, anthelmintic, female libido, hyperdipsia, anorexia, intermittent, mouth ulcer and sore throat, syphilitic pain, burning sensation fever, biliary dysfunction and also used as appetizer, antimicrobial, anti-fungal, analgesic, anti-inflammatory and anti-scorbutic. Its biological activities have been reported by different researchers as hepatoprotective, neuropharmacological, anticancer, antioxidant, anticonvulsant, antiulcer, anthelmintic, analgesic, anti-inflammatory, cardiovascular, antinociceptive, anti-diabetic, anti-pyretic, cardiotonic, histamine releasing, DNA damage inhibition, constipation, anti-diarrheal, antihyperlipidemic, antibacterial, antiviral, cytotoxic potential and diuretic. Its phytochemical constituents which impart medicinal value to the plant was reported as alkaloids, carbohydrates, glycosides, unsaturated sterols, phenolics, saponins, flavonoids, steroids, triterpenoids, tannins, proteins, cardiac glycosides, phytosterol, phlobatannins, leucoanthocyanin, chalcones, coumarin, anthracyanin, emodin, minerals acids, vitamins and anthraquinone glycosides. So far 14 compounds have been isolated from roots, 40 compounds from fruits and 19 compounds from leafs. These compounds include phenolic, alkaloids, sterols, terpenoids, simple acids, simple ester, sesquiterpenes, carboxylate, amino acids, glucose and galactose, sterols glycosides, phenolic lignin. Hence we reviewed the traditional uses, extraction methods, pharmacological uses and phytochemical constituents of Carissa carandas.

A new benzofuran derivative glycoside and a new coumarin glycoside from roots of Heracleum dissectum Ledeb

Heracleum dissectum Ledeb. is an ethnic herb used by Oroqen people in Northeast China. The roots of this plant are usually used for treatment of several diseases. However, chemical constituents and pharmacological study were rarely reported. In this present study, phytochemical investigation of H. dissectum methanolic extract (HdME) led to the isolation of a new benzofuran derivative glycoside, 6-methoxycarbonylethyl-benzofuran-5-O-β-d-xylopyranosyl (1 → 2)-β-d-glucopyranoside (1) and a new coumarin glycoside, 6″-β-d-glucopyranosyl-apterin (2). Their structures were elucidated on the basis of physicochemical properties and the detailed interpretation of various spectroscopic data. Adipogenesis accumulating activity was assayed in 3T3-L1 cells. Compound 2 could potently accelerate the accumulation of triglycerides (TG) in 3T3-L1 adipocytes in which TG concentrations were 15.6 ± 2.3, 26.8 ± 1.8, and 35.6 ± 2.6% higher than those of the control group at the concentration of 3, 10, and 30 μM, respectively. In contrast, compound 1 exhibited comparatively weak activity on TG accumulation in adipocytes. This result denoted that the new compound 2 might possess antidiabetic activity in vivo.

Bioactive constituents from Vitex negundo var. heterophylla and their antioxidant and α-glucosidase inhibitory activities

Vitex negundo L. var. heterophylla (Franch.) Rehd. is widely accepted as a functional and medicinal food in China because of the presence of bioactive components which improve the physical condition. In the present study, the bioactive constituents, antioxidant, α-glucosidase and DPP-IV inhibitory activities of V. negundo var. heterophylla were investigated. Two new coumarin glycosides, vitexnegheteroins I-J (1–2), and two new iridoid glycosides, vitexnegheteroins K-L (3–4), were isolated from the leaves and seeds of V. negundo var. heterophylla, together with twenty known compounds. Seven compounds presented stronger antioxidant activities than l-ascorbic acid in both DPPH and ABTS assays. Among them, isoorientin-6″-O-caffeate (22) also exhibited more potent α-glucosidase inhibitory activity than acarbose with an IC50 value of 0.24±0.02μM. These findings further revealed the bioactive components of this edible aromatic plant and disclosed the potency of it to be developed as new antioxidant and α-glucosidase inhibitory agents.

Three new coumarin glycosides from the stems of Hydrangea paniculata

Three new coumarin glycosides (1-3), together with three known compounds (4-6), have been obtained from the stems of Hydrangea paniculata Sieb. Their structures were elucidated based on spectroscopic data and chemical evidence. In addition, compounds 1-3 were screened for their neuroprotective effects against serum deprivation-induced PC12 cell damage, hepatoprotective activities against DL-galactosamine-induced toxicity in HL-7702 cells and their ability to inhibit LPS-induced nitric oxide production in the murine microglia BV2 cell line, but they were inactive.

New Phenylpropanoid and Coumarin Glycosides from the Stems of Hydrangea paniculata Sieb.

A new phenylpropanoid glycoside (1), and two new coumarin glycosides (2, 3), together with two known compounds (4, 5), have been isolated from the stems of Hydrangea paniculata Sieb. Their structures have been determined by spectroscopic and chemical methods. Furthermore, compound 1 (50 μM) exhibited significant hepatoprotective activity against N-acetyl-p-aminophenol (APAP)-induced HepG2 cell damage in vitro assays.

An Update on Secondary Metabolites from Glycyrrhiza Species

Secondary metabolites have been obtained from the Glycyrrhiza species (Fabaceae) including G. glabra, G. echinata, G. uralensis, G. triphylla and G. macedonica. These compounds 1-25 belong to the classes, steroid, saponin, flavonoid, flavonoid glycoside, triterpenic acid, coumarin, phenolic derivative, chalcone and chalcone glycoside. This review will describe the isolated compounds 1-25, obtained from Glycyrrhiza species with their biological activities up to 1966.

Total Coumarins from Hydrangea paniculata Protect against Cisplatin-Induced Acute Kidney Damage in Mice by Suppressing Renal Inflammation and Apoptosis.

Aim. Hydrangea paniculata (HP) Sieb. is a medical herb which is widely distributed in southern China, and current study is to evaluate renal protective effect of aqueous extract of HP by cisplatin-induced acute kidney injury (AKI) in animal model and its underlying mechanisms. Materials and Methods. HP extract was prepared and the major ingredients were coumarin glycosides. AKI mouse models were established by single i.p. injection of 20 mg/kg cisplatin, and HP was orally administrated for total five times. The renal biochemical functions, pathological staining, kidney oxidative stress, and inflammatory status were measured. Apoptosis of tubular cells and infiltration of macrophages and neutrophils were also tested. Results. HP administration could improve the renal function by decreasing concentration of blood urea nitrogen (BUN) and creatinine and attenuates renal oxidative stress and tubular pathological injury and apoptosis; further research demonstrated that HP could inhibit the overproduction of proinflammatory cytokines and regulate caspase and BCL-2 family proteins. HP also reduced renal infiltration of macrophages and neutrophils, and its effect might be by downregulating phosphorylation of ERK1/2 and stat3 signaling pathway. Conclusions. This present study suggests that HP could ameliorate cisplatin induced kidney damage by antioxidation and suppressing renal inflammation and tubular cell apoptosis.

Pharmacognostical, Phytochemical and In Vitro antiglycation studies on the leaf extracts of Hibiscus micranthus Linn.

The aim of the present study was to carry out powder analysis, fluorescence analysis, microscopic study, physico chemical analysis, total flavonoid and phenolic content and in vitro antiglycation studies for the leaf aqueous and alcoholic extracts of Hibiscus micranthus Linn. by serum albumin assay. The results of powder analysis indicated that the powder with ferric chloride solution showed mustard green colour, under UV powder with ferric chloride showed brown colour. The total ash value 75%w/w, acid insoluble ash 25%w/w, water soluble ash 35%w/w and sulphated ash 15%w/w respectively. The water soluble extractive value 2.2%w/w, alcohol soluble extractive 19.3%w/w and the result of loss on drying were found to be 9.33%w/w. The microscopic study observations were presence of stellate 3–4 armed trichomes, anisocytic stomata, mucilaginous parenchyma, lignified libiform xylem vessels and Ca.oxalate druse crystals. The leaf constant values include stomatal index of upper and lower epidermis to be 4.66, 4.15, palisade ratio 9, vein islet number 12, veinlet termination number to be 9. The length and width of xylem vessels to be 15.75μ, 117.62 μ. The length and width of trichomes was found to be 30.6 μ and 2.87 μ. The results of preliminary phytochemical screening showed the presence of alkaloids, tannins, phenolics, flavonoids, steroids, cardenolides, coumarin glycosides, reducing sugars, acidic compounds, inulin, waxes and reserpine. The total flavonoid content was more in methanolic extract 104±0.36 mg/g equivalents of rutin. The phenolic content was also more in methanolic extract 52.76±0.67 mg/g equivalents of rutin. The methanolic extract exhibited significant in vitro antiglycation activity at 1000 μg/ml 95.6%±0.0025** equivalent to standard drug rutin. Therefore the individual phytoconstituents from the extracrs can be further explored and studied for the activity.

Glycosylation and sulfation of 4-methylumbelliferone by Gliocladium deliquescens NRRL 1086

The aim of the study was to expand the substrate scope of Gliocladium deliquescens NRRL 1086 and generate coumarin glycosides using 4-methylumbelliferone (4-MU) as a substrate. The obtained results indicated that 4-MU can be metabolized to its glucoside (M1) and sulfate conjugate (M2), and the structures of the metabolites were elucidated by spectroscopic or enzymatic methods. Time course experiments detected that nearly 90% of 4-MU could be metabolized within 24 h, and the maximum yield of M1 could reach as high as 32%. Further tests revealed that the glucose concentration in the medium had little effect on the yield of M1 but time of 4-MU-adding could markedly affect the glycosylation procedure, and the favorable time to accumulate M1 was in the 12 or 24 h-old stage II culture, while in the 36 h-old or even older stage II culture, the substrate was almost metabolized to M2. The attempts to alter the ratio between M1 and M2 were performed by addition of quercetin and S-tetrahydroberberrubine or reduction of the sulfate concentration in the culture medium. Herein we describe, to the best of our knowledge, the first example of simultaneously microbial glycosylation and sulfation of coumarins.

Isolation and profiling of coumarin glycosides from the anti-hyperuricemic ethanol extract of mulberry (Morus alba L.) twigs (Chin.Ph.)

Isolation and profiling of coumarin glycosides from the anti-hyperuricemic ethanol extract of mulberry (Morus alba L.) twigs (Chin.Ph.)

Effect of a mixture of diosmin, coumarin glycosides, and triterpenes on bleeding, thrombosis, and pain after stapled anopexy: a prospective, randomized, placebo-controlled clinical trial.

We evaluated the efficacy of oral administration of a mixture of diosmin, coumarin glycosides, and Centella asiatica (Venoplant®) in preventing bleeding, pain, and thrombosis of internal and external hemorrhoids after stapled anopexy (SA). SA was conducted in 182 patients with third-degree hemorrhoids. Preoperatively, patients were randomized evenly into two groups. Group A patients were administered Venoplant for 30days post-SA, and group B received a placebo for 30days post-SA. Patients received paracetamol for postoperative pain. Visit (v)1, v2, and v3 took place 7, 15, and 30days postoperatively, respectively; bleeding (clinical examination), visual analog scale (VAS), thrombosis (clinical examination), and pain (paracetamol dosage, VAS) were evaluated. At v1, v2, and v3, the numbers of patients with bleeding in groups A and B were 21 and 46, 3 and 25, and 1 and 5, respectively (p<0.05). At v1, v2, and v3, the numbers of patients in groups A and B with thrombosed internal hemorrhoids were 3 and 13, 2 and 11, and 1 and 8, respectively (p<0.05). The number of patients who took at least one paracetamol tablet was similar in both groups at v1 but was significantly greater in group B than group A at v2 and v3 (p<0.05); pain VAS scores were equivalent at v1 and significantly greater in group B than group A at v2 and v3 (p<0.05). Venoplant effectively reduced bleeding after SA, decreased the incidence of thrombosed internal hemorrhoids, and decreased postoperative pain.

Chemical constituents and quality control of two Dracocephalum species based on high-performance liquid chromatographic fingerprints coupled with tandem mass spectrometry and chemometrics.

Two similar Dracocephalum species, namely, Dracocephalum tanguticum Maxim and Dracocephalum moldavica L, are commonly used as ethnic medicines in China. Here we describe a strategy of combining high-performance liquid chromatography with quadrupole time-of-flight mass spectrometry, as well as fingerprints and chemometrics for characterization and discrimination of chemical constituents on the two herbs. A total of 49 compounds including 33 flavonoids, 5 phenylethanol glycosides, 1 coumarin glycoside, 8 organic acids, and 2 other types of compounds were unambiguously or tentatively identified from the two Dracocephalum species. Among the compounds identified, 26 were characterized for the first time and 4 compounds, rosmarinic acid (7), salvianolic acid B (10), luteoloside (22), diosmetin-7-O-glucoside (28), were inferred as common constituents for the two herbs. Flavonoids featured in these two Dracocephalum species while their types presented significant differences. Acacetin (45) and acacetin glycosides (acatetin-7-O-glucuronide (30), acacetin-7-O-(6"-O-malonyl) glucoside (33), buddleoside (34), tilianin (35), and agastachoside (42)) were detected only in D. moldavica, which can be used to discriminate two herbal medicines. In addition, six characteristic constitutes in D. tanguticum were simultaneously quantified. Moreover, the induced chemometrics methods including similarity analysis and hierarchical clustering analysis were successfully applied for origin discrimination and quality evaluation of D. tanguticum and D. moldavica.