1
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Tsukioka J, Ohki Y, Nakao M, Nakamura S. Quantitative analysis of taxiphyllin, a cyanogenic glycoside, in the leaves of Hydrangea macrophylla var. thunbergii. J Nat Med 2023; 77:978-985. [PMID: 37517070 DOI: 10.1007/s11418-023-01733-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/12/2023] [Indexed: 08/01/2023]
Abstract
The dried and fermented leaves of Hydrangea macrophylla var. thunbergii are currently used as crude drugs (Sweet Hydrangea Leaf) with a sweet taste for patients with diabetes. In recent years, cases of food poisoning with symptoms of vomiting etc. have been reported after drinking a decoction of this crude drug. Cyanogenic glycosides have been suggested as potential causative agents. However, cyanogenic glycosides from H. macrophylla var. thunbergii was ambiguous. In the present study, we found that the leaves contained the cyanogenic glycoside taxiphillin (1). Next, the content of 1 in leaves of different sizes, colors, parts, and growth periods was quantified. In addition, we prepared the leaves of plants grown in five types of soils with different pH values (pH 5.0-7.5). The content of 1 in the leaves of the plants grown in these soils was quantified. The content of 1 varied greatly, with more than a three-fold difference, depending on when the leaves were collected from the plants. Furthermore, we compared the content of 1 in the crude drug obtained under different processing conditions for H. macrophylla var. thunbergii. The results showed that 1 was mostly hydrolyzed during plant processing. It has been suggested that cyanogenic glycosides are not the causative constituents of food poisoning.
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Affiliation(s)
- Junko Tsukioka
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Yutaro Ohki
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Momona Nakao
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Seikou Nakamura
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan.
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2
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Separation of Dihydro-Isocoumarins and Dihydro-Stilbenoids from Hydrangea macrophylla ssp. serrata by Use of Counter-Current Chromatography. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113424. [PMID: 35684362 PMCID: PMC9182509 DOI: 10.3390/molecules27113424] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 11/16/2022]
Abstract
Previously, different Hydrangea macrophylla ssp. serrata cultivars were investigated by untargeted LC-MS analysis. From this, a list of tentatively identified and unknown compounds that differ significantly between these cultivars was obtained. Due to the lack of reference compounds, especially for dihydro-isocoumarins, we aimed to isolate and structurally characterise these compounds from the cultivar 'Yae-no-amacha' using NMR and LC-MS methods. For purification and isolation, counter-current chromatography was used in combination with reversed-phase preparative HPLC as an orthogonal and enhanced purification workflow. Thirteen dihydro-isocoumarins in combination with other metabolites could be isolated and structurally identified. Particularly interesting was the clarification of dihydrostilbenoid glycosides, which were described for the first time in H. macrophylla ssp. serrata. These results will help us in further studies on the biological interpretation of our data.
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3
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Cui Y, Zhang G, Li Y, Li W, Tanabe G, Osamu M, Xie W. Microwave‐Assisted Synthesis of
d/l‐
Agrimonolide. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yu‐Ang Cui
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University Nanjing 210009 P. R. China
| | - Guang‐Yu Zhang
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University Nanjing 210009 P. R. China
| | - Yun‐Zhi Li
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University Nanjing 210009 P. R. China
| | - Wei Li
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University Nanjing 210009 P. R. China
| | - Genzoh Tanabe
- Faculty of Pharmacy Kinki University 3-4-1 Kowakae Higashi-osaka 577-8502 Osaka Japan
| | - Muraoka Osamu
- Faculty of Pharmacy Kinki University 3-4-1 Kowakae Higashi-osaka 577-8502 Osaka Japan
| | - Wei‐Jia Xie
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University Nanjing 210009 P. R. China
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4
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Dihydroisocoumarins, Naphthalenes, and Further Polyketides from Aloe vera and A. plicatilis: Isolation, Identification and Their 5-LOX/COX-1 Inhibiting Potency. Molecules 2021; 26:molecules26144223. [PMID: 34299499 PMCID: PMC8305570 DOI: 10.3390/molecules26144223] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/01/2021] [Accepted: 07/03/2021] [Indexed: 11/16/2022] Open
Abstract
The present study aims at the isolation and identification of diverse phenolic polyketides from Aloe vera (L.) Burm.f. and Aloe plicatilis (L.) Miller and includes their 5-LOX/COX-1 inhibiting potency. After initial Sephadex-LH20 gel filtration and combined silica gel 60- and RP18-CC, three dihydroisocoumarins (nonaketides), four 5-methyl-8-C-glucosylchromones (heptaketides) from A. vera, and two hexaketide-naphthalenes from A. plicatilis have been isolated by means of HSCCC. The structures of all polyketides were elucidated by ESI-MS and 2D 1H/13C-NMR (HMQC, HMBC) techniques. The analytical/preparative separation of 3R-feralolide, 3′-O-β-d-glucopyranosyl- and the new 6-O-β-d-glucopyranosyl-3R-feralolide into their respective positional isomers are described here for the first time, including the assignment of the 3R-configuration in all feralolides by comparative CD spectroscopy. The chromones 7-O-methyl-aloesin and 7-O-methyl-aloeresin A were isolated for the first time from A. vera, together with the previously described aloesin (syn. aloeresin B) and aloeresin D. Furthermore, the new 5,6,7,8-tetrahydro-1-O-β-d-glucopyranosyl- 3,6R-dihydroxy-8R-methylnaphtalene was isolated from A. plicatilis, together with the known plicataloside. Subsequently, biological-pharmacological screening was performed to identify Aloe polyketides with anti-inflammatory potential in vitro. In addition to the above constituents, the anthranoids (octaketides) aloe emodin, aloin, 6′-(E)-p-coumaroyl-aloin A and B, and 6′-(E)-p-coumaroyl-7-hydroxy-8-O-methyl-aloin A and B were tested. In the COX-1 examination, only feralolide (10 µM) inhibited the formation of MDA by 24%, whereas the other polyketides did not display any inhibition at all. In the 5-LOX-test, all aloin-type anthranoids (10 µM) inhibited the formation of LTB4 by about 25–41%. Aloesin also displayed 10% inhibition at 10 µM in this in vitro setup, while the other chromones and naphthalenes did not display any activity. The present study, therefore, demonstrates the importance of low molecular phenolic polyketides for the known overall anti-inflammatory activity of Aloe vera preparations.
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5
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Xuan Duy L, Le Ba V, Gao D, Hoang VD, Quoc Toan T, Yang SY, Duy Quang D, Kim YH, Cuong NM. Soluble epoxide hydrolase inhibitors from Docynia indica (Wall.) Decne. Nat Prod Res 2020; 35:5403-5408. [PMID: 32510241 DOI: 10.1080/14786419.2020.1774759] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nine bioactive compounds, including one new dihydroisocoumarin glycoside, 3S-thunberginol C 6-O-β-D-glucopyranoside (1a/1b), were isolated by chromatographic separation from the fruits of the Vietnamese medicinal plant Docynia indica (Wall.) Decne. 3S-thunberginol C 6-O-β-D-glucopyranoside was determined as a mixture of boat-like conformers based on NMR evidence and density functional theory (DFT) calculations. The in vitro inhibition of soluble epoxide hydrolase (sEH) by the isolated compounds was comparable to that of AUDA (positive control), yielding IC50 values ranging from 10.0 ± 0.6 to 88.4 ± 0.2 µM. Among isolated compounds, 3-methoxy-4-hydroxy-benzoic acid (7) and 2',6'-dihydroxy 3',4'-dimethoxychalcone (9) were identified as a potent inhibitor of sEH, with IC50 values of 19.3 ± 2.2 and 10.0 ± 0.6 mM, respectively. These results suggest that the fruits of D. indica may be useful as daily supplements for the prevention of cardiovascular and other sEH-related diseases.[Formula: see text].
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Affiliation(s)
- Le Xuan Duy
- Institute of Natural Products Chemistry (INPC), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam.,Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam
| | - Vinh Le Ba
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea.,Institute of Marine Biochemistry (IMBC), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam
| | - Dan Gao
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Vu Dinh Hoang
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam.,Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam
| | - Tran Quoc Toan
- Institute of Natural Products Chemistry (INPC), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam.,Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam
| | - Seo Young Yang
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Dao Duy Quang
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam.,Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, Vietnam
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Nguyen Manh Cuong
- Institute of Natural Products Chemistry (INPC), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam.,Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), Caugiay, Hanoi, Vietnam
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6
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Hsu FC, Tsai SF, Lee SS. Chemical investigation of Hyptis suaveolens seed, a potential antihyperuricemic nutraceutical, with assistance of HPLC-SPE-NMR. J Food Drug Anal 2019; 27:897-905. [PMID: 31590761 PMCID: PMC9306982 DOI: 10.1016/j.jfda.2019.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/03/2019] [Accepted: 05/21/2019] [Indexed: 11/16/2022] Open
Affiliation(s)
| | | | - Shoei-Sheng Lee
- Corresponding author: Fax: +886 2 23916127. E-mail address: (S.-S. Lee)
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7
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Gho Y, Shin SS, Choi YH, Ko K, Kim WJ, Moon SK. Hydrangenol suppresses VEGF-stimulated angiogenesis by targeting p27KIP1-dependent G1-cell cycle arrest, VEGFR-2-mediated signaling, and MMP-2 expression. Anim Cells Syst (Seoul) 2019; 23:72-81. [PMID: 30949393 PMCID: PMC6440517 DOI: 10.1080/19768354.2019.1578262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 01/19/2023] Open
Abstract
We previously reported that hydrangenol has potent antitumor activity against human bladder cancer EJ cells. Here, we investigated the antiangiogenic activity of hydrangenol using in vitro and ex vivo models. Treatment with hydrangenol significantly inhibited the proliferation of vascular endothelial growth factor (VEGF)-induced HUVECs in a concentration-dependent manner (EC50 = 10 μM). Flow cytometry analysis revealed that hydrangenol suppressed the VEGF-induced inhibition of G1-cell cycle phase and also decreased cyclin D1, cyclin E, CDK2, and CDK4 levels. Hydrangenol-mediated arrest in the G1-cell cycle phase was associated with p27KIP1 level, but not p21WAF1 or p53 level. Hydrangenol also significantly inhibited VEGFR-2-mediated signaling pathways including ERK1/2, AKT, and endothelial nitric oxide synthase. Interestingly, immunoprecipitation assay demonstrated that the inhibition of VEGFR-2 activation was independent of VEGF binding, thereby suggesting an allosteric regulation of hydrangenol against VEGFR-2. Additionally, hydrangenol inhibited migration, invasion, and capillary-like tubular formation in VEGF-stimulated HUVECs. Zymography and immunoblot analyses revealed that these inhibitory activities were partially owing to the VEGF-induced inhibition of matrix metalloproteinase-2 activity. Finally, VEGF-mediated microvessel sprouting was inhibited in the presence of hydrangenol in ex vivo aortic ring assay. Taken together, hydrangenol possesses a potent antiangiogenesis potential; thus we believe that hydrangenol may be developed as a therapeutic reagent to treat angiogenesis-mediated diseases.
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Affiliation(s)
- Yujeong Gho
- Department of Food and Nutrition, Chung-Ang University, Anseong, Republic of Korea
| | - Seung-Shick Shin
- Department of Food Science and Nutrition, Jeju National University, Jeju, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Oriental Medicine, Dongeui University, Busan, Republic of Korea
| | - Kisung Ko
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Wun-Jae Kim
- Department of Urology, Chungbuk National University, Cheongju, Republic of Korea
| | - Sung-Kwon Moon
- Department of Food and Nutrition, Chung-Ang University, Anseong, Republic of Korea
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8
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Im H, Kang D, Choi S, Shin S, Hong S. Visible-Light-Induced C–O Bond Formation for the Construction of Five- and Six-Membered Cyclic Ethers and Lactones. Org Lett 2018; 20:7437-7441. [DOI: 10.1021/acs.orglett.8b03166] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Honggu Im
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Dahye Kang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Soyeon Choi
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Sanghoon Shin
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Sungwoo Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
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9
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Cataract Preventive Role of Isolated Phytoconstituents: Findings from a Decade of Research. Nutrients 2018; 10:nu10111580. [PMID: 30373159 PMCID: PMC6265913 DOI: 10.3390/nu10111580] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/10/2018] [Accepted: 10/15/2018] [Indexed: 12/19/2022] Open
Abstract
Cataract is an eye disease with clouding of the eye lens leading to disrupted vision, which often develops slowly and causes blurriness of the eyesight. Although the restoration of the vision in people with cataract is conducted through surgery, the costs and risks remain an issue. Botanical drugs have been evaluated for their potential efficacies in reducing cataract formation decades ago and major active phytoconstituents were isolated from the plant extracts. The aim of this review is to find effective phytoconstituents in cataract treatments in vitro, ex vivo, and in vivo. A literature search was synthesized from the databases of Pubmed, Science Direct, Google Scholar, Web of Science, and Scopus using different combinations of keywords. Selection of all manuscripts were based on inclusion and exclusion criteria together with analysis of publication year, plant species, isolated phytoconstituents, and evaluated cataract activities. Scientists have focused their attention not only for anti-cataract activity in vitro, but also in ex vivo and in vivo from the review of active phytoconstituents in medicinal plants. In our present review, we identified 58 active phytoconstituents with strong anti-cataract effects at in vitro and ex vivo with lack of in vivo studies. Considering the benefits of anti-cataract activities require critical evaluation, more in vivo and clinical trials need to be conducted to increase our understanding on the possible mechanisms of action and the therapeutic effects.
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10
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Çiçek SS, Vitalini S, Zidorn C. Natural Phenyldihydroisocoumarins: Sources, Chemistry and Bioactivity. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The present review gives an overview about naturally occurring phenyldihydroisocoumarins, their sources, and bioactivities. In total, 54 compounds are covered, including eight substances which are in fact alkaloids or protoalkaloids. These nitrogen containing compounds were exclusively found in the Papaveraceae family. The remaining 46 compounds have been reported from twelve different source families, ranging from mosses to angiosperms. Six of the nitrogen free compounds feature additional rings, while 40 are simple phenyldihydroisocoumarins with substituents in all possible positions, except 3, 2’, and 6’. Common substituents of these simple phenyldihydroisocoumarins are hydroxy groups, methoxy groups, and glucosyloxy groups; on the other hand, acuminosyloxy and rutinosyloxy groups have so far been found only in one and two naturally occurring phenyldihydroisocoumarins, respectively. Though a number of bioactivities have been proven for phenyldihydroisocoumarins, ranging from anticancer and antidiabetic to antimicrobial and anti-inflammatory activities, so far only one taxon, Hydrangea macrophylla var. thunbergii, is widely used. Moreover, the usage of this taxon is mainly due to the sweet taste properties of the contained phenyldihydroisocoumarin phyllodulcin and less based on the alleged health-promoting effects of its constituents.
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Affiliation(s)
- Serhat S. Çiçek
- Department of Pharmaceutical Biology, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
| | - Sara Vitalini
- Department of Agricultural and Environmental Sciences, Milan State University, via Celoria 2, 20133 Milano, Italy
| | - Christian Zidorn
- Department of Pharmaceutical Biology, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
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11
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Zhang GJ, Li B, Chen L, Tian Y, Liu SJ, Cui HM, Dong JX. Isocoumarin derivatives and monoterpene glycoside from the seeds of Orychophragmus violaceus. Fitoterapia 2018; 125:111-116. [DOI: 10.1016/j.fitote.2017.12.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 12/24/2017] [Accepted: 12/27/2017] [Indexed: 10/18/2022]
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12
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Kim HJ, Kang CH, Jayasooriya RGPT, Dilshara MG, Lee S, Choi YH, Seo YT, Kim GY. Hydrangenol inhibits lipopolysaccharide-induced nitric oxide production in BV2 microglial cells by suppressing the NF-κB pathway and activating the Nrf2-mediated HO-1 pathway. Int Immunopharmacol 2016; 35:61-69. [DOI: 10.1016/j.intimp.2016.03.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 03/15/2016] [Accepted: 03/17/2016] [Indexed: 12/16/2022]
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13
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Wang Z, Tang S, Jin Y, Zhang Y, Hattori M, Zhang H, Zhang N. Two main metabolites of gentiopicroside detected in rat plasma by LC–TOF-MS following 2,4-dinitrophenylhydrazine derivatization. J Pharm Biomed Anal 2015; 107:1-6. [DOI: 10.1016/j.jpba.2014.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/13/2014] [Accepted: 12/03/2014] [Indexed: 01/10/2023]
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14
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Wu X, Tang S, Jin Y, Zhang Y, Hattori M, Wang X, Zhang H, Wang Z. New analytical method for the study of metabolism of swertiamarin in rats after oral administration by UPLC-TOF-MS following DNPH derivatization. Biomed Chromatogr 2015; 29:1184-9. [PMID: 25612327 DOI: 10.1002/bmc.3406] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 11/02/2014] [Accepted: 11/14/2014] [Indexed: 01/02/2023]
Abstract
The metabolism of swertiamarin in vivo was studied by LC-MS following 2,4-dinitrophenylhydrazine derivatization. The ionization efficiency of the main metabolite erythrocentaurin was greatly enhanced by the new analytical method developed, and erythrocentaurin was successfully detected for the first time in rat plasma after oral administration of swertiamarin. Methyl 4-formylbenzoate was used as the internal standard to quantify erythrocentaurin in rat plasma in negative mode by UPLC-TOF-MS, and it was found that erythrocentaurin reached the maximum mean plasma concentration of 425.8 ± 127.6 ng/mL at about 2 h after oral administration of swertiamarin at a dose of 200 mg/kg. A metabolic pathway of swertiamarin to erythrocentaurin was proposed. Swertiamarin is first hydrolyzed by bacterial β-glucusidase to give the aglycone, which is readily converted to erythrocentaurin. The monoterpene compound swertiamarin was found to be metabolized to dihydroisocoumarin and alkaloid compounds in vivo, which may be responsible for the pharmacological effect of swertiamarin. The results may shed light on the clinical efficacy of swertiamarin and the new analytical method may assist in studies for the metabolism of other natural iridoids and secoiridoids in vivo.
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Affiliation(s)
- Xiuhong Wu
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, 150040, China
| | - Shuhan Tang
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,Harbin Children Hospital, Youyi road 57, Harbin, China
| | - Yan Jin
- Harbin Children Hospital, Youyi road 57, Harbin, China
| | - Yan Zhang
- Harbin Children Hospital, Youyi road 57, Harbin, China
| | - Masao Hattori
- Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Xijun Wang
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, 150040, China
| | - Hailong Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Shaanxi, 710061, China
| | - Zhigang Wang
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, 150040, China.,Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
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15
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Matsumoto T, Nakamura S, Nakashima S, Fujimoto K, Yoshikawa M, Ohta T, Ogawa K, Matsuda H. Lignan dicarboxylates and terpenoids from the flower buds of Cananga odorata and their inhibitory effects on melanogenesis. JOURNAL OF NATURAL PRODUCTS 2014; 77:990-999. [PMID: 24601675 DOI: 10.1021/np401091f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The methanolic extract from the flower buds of Cananga odorata showed an inhibitory effect on melanogenesis in theophylline-stimulated murine B16 melanoma 4A5 cells. From the methanolic extract, two new lignan dicarboxylates, canangalignans I and II, three new terpenoids, canangaterpenes I, II, and III, and eight known compounds were isolated. The structures of these compounds were elucidated on the basis of chemical/physicochemical evidence. Several mono- and sesquiterpene analogues significantly inhibited melanogenesis. In particular, canangaterpene I and (3R,3aR,8aS)-3-isopropyl-8a-methyl-8-oxo-1,2,3,3a,6,7,8,8a-octahydroazulene-5-carbaldehyde exhibited a potent inhibitory effect on melanogenesis [inhibition (%): 34.7±4.2 (p<0.01), 45.5±5.7 (p<0.01) at 1 μM, respectively] without inducing cytotoxicity. Moreover, the biological effect of these compounds was much stronger than that of the reference compound, arbutin. Thus, these isolated terpenoid derivatives may be promising therapeutic agents for the treatment of several skin disorders.
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Affiliation(s)
- Takahiro Matsumoto
- Kyoto Pharmaceutical University , Misasagi, Yamashina-ku, Kyoto 607-8412, Japan
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16
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Structures of acylated sucroses from the flower buds of Prunus mume. J Nat Med 2014; 68:481-7. [PMID: 24532439 DOI: 10.1007/s11418-014-0818-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Accepted: 01/14/2014] [Indexed: 10/25/2022]
Abstract
Seven new acylated sucroses, mumeoses P-V, were isolated from the flower buds of Prunus mume, cultivated in Zhejiang province, China. Their chemical structures were elucidated on the basis of chemical and physicochemical evidence. Moreover, mumeoses C, D, and R, were shown to substantially inhibit aldose reductase.
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Wang Z, Wang S, Sun Y, Wang H, Chen G, Wang X, Hattori M, Zhang H. New analytical method for the study of the metabolism of gentiopicroside in rats after oral administration by LC-TOF-MS following picolinoyl derivatization. J Sep Sci 2013; 37:237-43. [PMID: 24376019 DOI: 10.1002/jssc.201300898] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/23/2013] [Accepted: 11/17/2013] [Indexed: 11/07/2022]
Abstract
The metabolism of gentiopicroside (GPS) in vivo was studied for the first time by LC-MS following picolinoyl derivatization. Incubation of erythrocentaurin, one of the main in vitro metabolites of GPS by intestinal bacteria, with liver microsome indicated that GPS might be metabolized to a final metabolite 3,4-dihydro-5-(hydroxymethyl)isochroman-1-one (HMIO) in vivo. After hydrolysis with sulfatase, HMIO was successfully detected in rat plasma after oral administration of GPS by LC-MS following picolinoyl derivatization. 4-Methoxyphenyl methanol was used as an internal standard to quantify HMIO in rat plasma. A metabolic pathway of GPS in rats is proposed. The monoterpene compound GPS was found to be metabolized to dihydroisocoumarin, which may be responsible for the pharmacological effect of GPS.
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Affiliation(s)
- Zhigang Wang
- National TCM Key Lab of Serum Pharmacochemistry, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Harbin, China; Institute of Natural Medicine, University of Toyama, Toyama, Japan
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Wang S, Tang S, Sun Y, Wang H, Wang X, Zhang H, Wang Z. Highly sensitive determination of new metabolite in rat plasma after oral administration of swertiamarin by liquid chromatography/time of flight mass spectrometry following picolinoyl derivatization. Biomed Chromatogr 2013; 28:939-46. [DOI: 10.1002/bmc.3099] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/22/2013] [Accepted: 11/05/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Shanshan Wang
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis; Heilongjiang University of Chinese Medicine; Heping Road 24 Harbin 150040 China
| | - Shuhan Tang
- Institute of Natural Medicine; University of Toyama; 2630 Sugitani Toyama 930-0194 Japan
- Harbin Children Hospital; Youyi road 57 Harbin China
| | - Yujia Sun
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis; Heilongjiang University of Chinese Medicine; Heping Road 24 Harbin 150040 China
| | - Huiyu Wang
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis; Heilongjiang University of Chinese Medicine; Heping Road 24 Harbin 150040 China
| | - Xijun Wang
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis; Heilongjiang University of Chinese Medicine; Heping Road 24 Harbin 150040 China
| | - Hailong Zhang
- School of Pharmacy, Health Science Center; Xi'an Jiaotong University; Shaanxi 710061 China
| | - Zhigang Wang
- National TCM Key Laboratory of Serum Pharmacochemistry, Department of Pharmaceutical Analysis; Heilongjiang University of Chinese Medicine; Heping Road 24 Harbin 150040 China
- Institute of Natural Medicine; University of Toyama; 2630 Sugitani Toyama 930-0194 Japan
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