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Ren Y, Tan Q, Heath K, Wu S, Wilson JR, Ren J, Shriwas P, Yuan C, Ngoc Ninh T, Chai HB, Chen X, Soejarto DD, Johnson ME, Cheng X, Burdette JE, Kinghorn AD. Cytotoxic and non-cytotoxic cardiac glycosides isolated from the combined flowers, leaves, and twigs of Streblus asper. Bioorg Med Chem 2020; 28:115301. [PMID: 31953129 DOI: 10.1016/j.bmc.2019.115301] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/14/2019] [Accepted: 12/28/2019] [Indexed: 10/25/2022]
Abstract
A new non-cytotoxic [(+)-17β-hydroxystrebloside (1)] and two known cytotoxic [(+)-3'-de-O-methylkamaloside (2) and (+)-strebloside (3)] cardiac glycosides were isolated and identified from the combined flowers, leaves, and twigs of Streblus asper collected in Vietnam, with the absolute configuration of 1 established from analysis of its ECD and NMR spectroscopic data and confirmed by computational ECD calculations. A new 14,21-epoxycardanolide (3a) was synthesized from 3 that was treated with base. A preliminary structure-activity relationship study indicated that the C-14 hydroxy group and the C-17 lactone unit and the established conformation are important for the mediation of the cytotoxicity of 3. Molecular docking profiles showed that the cytotoxic 3 and its non-cytotoxic analogue 1 bind differentially to Na+/K+-ATPase. Compound 3 docks deeply in the Na+/K+-ATPase pocket with a sole pose, and its C-10 formyl and C-5, C-14, and C-4' hydroxy groups may form hydrogen bonds with the side-chains of Glu111, Glu117, Thr797, and Arg880 of Na+/K+-ATPase, respectively. However, 1 fits the cation binding sites with at least three different poses, which all depotentiate the binding between 1 and Na+/K+-ATPase. Thus, 3 was found to inhibit Na+/K+-ATPase, but 1 did not. In addition, the cytotoxic and Na+/K+-ATPase inhibitory 3 did not affect glucose uptake in human lung cancer cells, against which it showed potent activity, indicating that this cardiac glycoside mediates its cytotoxicity by targeting Na+/K+-ATPase but not by interacting with glucose transporters.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Qingwei Tan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Kimberly Heath
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Sijin Wu
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - James R Wilson
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Jinhong Ren
- Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Pratik Shriwas
- Department of Biological Sciences, Ohio University, Athens, OH 45701, United States; Edison Biotechnology Institute, Ohio University, Athens, OH 45701, United States; Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States
| | - Chunhua Yuan
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH 43210, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Xiaozhuo Chen
- Department of Biological Sciences, Ohio University, Athens, OH 45701, United States; Edison Biotechnology Institute, Ohio University, Athens, OH 45701, United States; Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States; Department of Biomedical Sciences, Ohio University, Athens, OH 45701, United States
| | - Djaja D Soejarto
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States; Science and Education, Field Museum of Natural History, Chicago, IL 60605, United States
| | - Michael E Johnson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States; Center for Biomolecular Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Xiaolin Cheng
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Joanna E Burdette
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States.
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2
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Benatrehina PA, Chen WL, Czarnecki AA, Kurina S, Chai HB, Lantvit DD, Ninh TN, Zhang X, Soejarto DD, Burdette JE, Kinghorn AD, Rakotondraibe LH. Bioactivity-Guided Isolation of Totarane-Derived Diterpenes from Podocarpus neriifolius and Structure Revision of 3-Deoxy-2α-hydroxynagilactone E. Nat Prod Bioprospect 2019; 9:157-163. [PMID: 30783922 PMCID: PMC6426912 DOI: 10.1007/s13659-019-0198-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 01/28/2019] [Indexed: 05/03/2023]
Abstract
Bioactivity-guided phytochemical investigation of Podocarpus neriifolius D. Don. (Podocarpaceae) has led to the isolation of one new (2) and three known (1, 3, and 4) B-type podolactones, along with three totarane-type diterpenes (5-7). Their structures were determined by interpretation of High Resolution ElectroSpray Ionization Mass Spectrometry (HRESIMS) and 1D and 2D NMR data, and comparison with the values reported in the literature. The structure of compound 1, previously identified as 3-deoxy-2α-hydroxynagilactone E (8), was revised as its 2β-epimer, which has been reported recently as a new compound. All of the isolates were evaluated for their antiproliferative activity against a panel of four human cancer cell lines, namely, ovarian (OVCAR3), breast (MDA-MB-231), colon (HT-29), and melanoma (MDA-MB-435), and compounds 1 and 3 were found to be cytotoxic with IC50 values in the low micromolar range for most of the cell lines used. The major compound, inumakilactone A (3), was further tested in vivo using the HT-29, MDA-MB-435, and OVCAR3 cells in a murine hollow fiber model, for the first time.
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Affiliation(s)
- P Annécie Benatrehina
- Division of Medicinal Chemistry and Pharmacognosy, The Ohio State University, College of Pharmacy, Columbus, OH, USA
| | - Wei-Lun Chen
- College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Austin A Czarnecki
- College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Steven Kurina
- College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, The Ohio State University, College of Pharmacy, Columbus, OH, USA
| | - Daniel D Lantvit
- College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Tran N Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology Hanoi, Hanoi, Vietnam
| | - Xiaoli Zhang
- Center for Biostatistics, The Ohio State University, Columbus, OH, USA
| | - Djaja D Soejarto
- College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
- John G. Searle Herbarium of the Field Museum of Natural History, Chicago, IL, USA
| | - Joanna E Burdette
- College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, The Ohio State University, College of Pharmacy, Columbus, OH, USA
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3
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Ren Y, Anaya-Eugenio GD, Czarnecki AA, Ninh TN, Yuan C, Chai HB, Soejarto DD, Burdette JE, de Blanco EJC, Kinghorn AD. Cytotoxic and NF-κB and mitochondrial transmembrane potential inhibitory pentacyclic triterpenoids from Syzygium corticosum and their semi-synthetic derivatives. Bioorg Med Chem 2018; 26:4452-4460. [PMID: 30057155 PMCID: PMC6177235 DOI: 10.1016/j.bmc.2018.07.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/07/2018] [Accepted: 07/14/2018] [Indexed: 12/19/2022]
Abstract
Syzygium is a large genus of flowering plants, with several species, including the clove tree, used as important resources in the food and pharmaceutical industries. In our continuing search for anticancer agents from higher plants, a chloroform extract of the leaves and twigs of Syzygium corticosum collected in Vietnam was found to be active toward the HT-29 human colon cancer cell line. Separation of this extract guided by HT-29 cells and nuclear factor-kappa B (NF-κB) inhibition yielded 19 known natural products, including seven triterpenoids, three ellagic acid derivatives, two methylated flavonoids, a cyclohexanone, four megastigmanes, a small lactone, and an aromatic aldehyde. The full stereochemistry of (+)-fouquierol (2) was defined for the first time. Biological investigations showed that (+)-ursolic acid (1) is the major cytotoxic component of S. corticosum, which exhibited also potent activities in the NF-κB and mitochondrial transmembrane potential (MTP) inhibition assays conducted, with IC50 values of 31 nM and 3.5 µM, respectively. Several analogues of (+)-ursolic acid (1) were synthesized, and a preliminary structure-activity relationship (SAR) study indicated that the C-3 hydroxy and C-28 carboxylic acid groups and 19,20-dimethyl substitution are all essential in the mediation of the bioactivities observed for this triterpenoid.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Gerardo D Anaya-Eugenio
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Austin A Czarnecki
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Chunhua Yuan
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Djaja D Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States; Science and Education, Field Museum of Natural History, Chicago, IL 60605, United States
| | - Joanna E Burdette
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Esperanza J Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States.
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4
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Woodard JL, Huntsman AC, Patel PA, Chai HB, Kanagasabai R, Karmahapatra S, Young AN, Ren Y, Cole MS, Herrera D, Yalowich JC, Kinghorn AD, Burdette JE, Fuchs JR. Synthesis and antiproliferative activity of derivatives of the phyllanthusmin class of arylnaphthalene lignan lactones. Bioorg Med Chem 2018; 26:2354-2364. [PMID: 29656990 DOI: 10.1016/j.bmc.2018.03.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/14/2018] [Accepted: 03/21/2018] [Indexed: 01/08/2023]
Abstract
A series of arylnaphthalene lignan lactones based on the structure of the phyllanthusmins, a class of potent natural products possessing diphyllin as the aglycone, has been synthesized and screened for activity against multiple cancer cell lines. SAR exploration was performed on both the carbohydrate and lactone moieties of this structural class. These studies have revealed the importance of functionalization of the carbohydrate hydroxy groups with both acetylated and methylated analogues showing increased potency relative to those with unsubstituted sugar moieties. In addition, the requirement for the presence and position of the C-ring lactone has been demonstrated through reduction and selective re-oxidation of the lactone ring. The most potent compound in this study displayed an IC50 value of 18 nM in an HT-29 assay with several others ranging from 50 to 200 nM. In an effort to elucidate their potential mechanism(s) of action, the DNA topoisomerase IIa inhibitory activity of the most potent compounds was examined based on previous reports of structurally similar compounds, but does not appear to contribute significantly to their antiproliferative effects.
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Affiliation(s)
- John L Woodard
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Andrew C Huntsman
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Pratiq A Patel
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Ragu Kanagasabai
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | | | - Alexandria N Young
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois-Chicago, Chicago, IL 60612, United States
| | - Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Malcolm S Cole
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Denisse Herrera
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois-Chicago, Chicago, IL 60612, United States
| | - Jack C Yalowich
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Joanna E Burdette
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois-Chicago, Chicago, IL 60612, United States
| | - James R Fuchs
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States.
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5
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Ali T, Inagaki M, Chai HB, Wieboldt T, Rapplye C, Rakotondraibe LH. Halogenated Compounds from Directed Fermentation of Penicillium concentricum, an Endophytic Fungus of the Liverwort Trichocolea tomentella. J Nat Prod 2017; 80:1397-1403. [PMID: 28409637 DOI: 10.1021/acs.jnatprod.6b01069] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
One new chlorinated xanthone, 6-chloro-3,8-dihydroxy-1-methylxanthone (1), a new 2-bromo-gentisyl alcohol (2), and a mixture of 6-epimers of 6-dehydroxy-6-bromogabosine C (3a and 3b), together with 19 previously identified compounds, epoxydon (4), norlichexanthone (5), 2-chlorogentisyl alcohol (6), hydroxychlorogentisyl quinone (7), 6-dehydroxy-6α-chlorogabosine C (8a), 6-dehydroxy-6β-chlorogabosine C (8b), gentisyl alcohol (9), gentisyl quinone (10), (R,S)-1-phenyl-1,2-ethanediol (11), dehydrodechlorogriseofulvin (12), dechlorogriseofulvin (13), dehydrogriseofulvin (14), griseofulvin (15), ethylene glycol benzoate (16), alternariol (17), griseoxanthone C (18), drimiopsin H (19), griseophenone C (20), and griseophenone B (21), were isolated from cultures of Penicillium concentricum, a fungal endophyte of the liverwort Trichocolea tomentella. The structures of the new compounds (1, 2, 3a, and 3b) were elucidated by interpretation of spectroscopic data including one- and two-dimensional NMR techniques. Among these, compounds 2-4 displayed modest cytotoxicity to the MCF-7 hormone-dependent breast cancer cell line with IC50 values of 8.4, 9.7, and 5.7 μM, respectively, whereas compound 9 exhibited selective cytotoxicity against the HT-29 colon cancer cell line with an IC50 value of 6.4 μM. During this study we confirmed that the brominated gentisyl alcohol (2) was formed by chemical conversion of 4 during bromide salt addition to culture media.
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Affiliation(s)
| | | | | | - Thomas Wieboldt
- Department of Biological Sciences, Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24061, United States
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6
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Ren Y, Chen WL, Lantvit DD, Sass EJ, Shriwas P, Ninh TN, Chai HB, Zhang X, Soejarto DD, Chen X, Lucas DM, Swanson SM, Burdette JE, Kinghorn AD. Cardiac Glycoside Constituents of Streblus asper with Potential Antineoplastic Activity. J Nat Prod 2017; 80:648-658. [PMID: 27983842 PMCID: PMC5365359 DOI: 10.1021/acs.jnatprod.6b00924] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Three new (1-3) and two known (4 and 5) cytotoxic cardiac glycosides were isolated and characterized from a medicinal plant, Streblus asper Lour. (Moraceae), collected in Vietnam, with six new analogues and one known derivative (5a-g) synthesized from (+)-strebloside (5). A preliminary structure-activity relationship study indicated that the C-10 formyl and C-5 and C-14 hydroxy groups and C-3 sugar unit play important roles in the mediation of the cytotoxicity of (+)-strebloside (5) against HT-29 human colon cancer cells. When evaluated in NCr nu/nu mice implanted intraperitoneally with hollow fibers facilitated with either MDA-MB-231 human breast or OVCAR3 human ovarian cancer cells, (+)-strebloside (5) showed significant cell growth inhibitory activity in both cases, in the dose range 5-30 mg/kg.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Wei-Lun Chen
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Daniel D. Lantvit
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Ellen J. Sass
- Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, United States
| | - Pratik Shriwas
- Department of Biological Sciences, Ohio University, Athens, OH 45701, United States
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, United States
- Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Xiaoli Zhang
- Center for Biostatistics, The Ohio State University, Columbus, OH 43210, United States
| | - Djaja D. Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
- Science and Education, Field Museum of Natural History, Chicago, IL 60605, United States
| | - Xiaozhuo Chen
- Department of Biological Sciences, Ohio University, Athens, OH 45701, United States
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, United States
- Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States
- Department of Biomedical Sciences, Ohio University, Athens, OH 45701, United States
| | - David M. Lucas
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
- Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, United States
| | - Steven M. Swanson
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, United States
| | - Joanna E. Burdette
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
- Corresponding Author.
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7
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Ren Y, Benatrehina PA, Acuña UM, Yuan C, Chai HB, Ninh TN, Carcache de Blanco EJ, Soejarto DD, Kinghorn AD. Isolation of Bioactive Rotenoids and Isoflavonoids from the Fruits of Millettia caerulea. Planta Med 2016; 82:1096-104. [PMID: 27280936 PMCID: PMC4956498 DOI: 10.1055/s-0042-108059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Three new rotenoids (1-3), two new isoflavonoids (4 and 5), and six known analogues (6-11) were isolated from an n-hexane partition of a methanol extract of the fruits of Millettia caerulea, with the structures of the new compounds elucidated by analysis of their spectroscopic data. The relative configurations of the rotenoids were determined by interpretation of their NMR spectroscopic data, and their absolute configurations were established using electronic circular dichroism spectra and specific rotation values. All compounds isolated were evaluated for their cell growth inhibitory activity against the HT-29 human colon cancer cell line, and the known compounds, (-)-3-hydroxyrotenone (6) and (-)-rotenone (7), were found to be potently active. When tested in an NF-κB inhibition assay, compound 6 showed activity. This compound, along with the new compound, (-)-caeruleanone D (1), and the known compound, ichthynone (8), exhibited K-Ras inhibitory potency. Further bioactivity studies showed that the new compounds, (-)-3-deoxycaeruleanone D (2) and (-)-3-hydroxycaeruleanone A (3), and the known compounds 8 and 11 induced quinone reductase in murine Hepa 1c1c7 cells.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - P. Annécie Benatrehina
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ulyana Muñoz Acuña
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Chunhua Yuan
- Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Esperanza J. Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Djaja D. Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Science and Education, Field Museum of Natural History, Chicago, IL 60605, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
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8
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Ren Y, VanSchoiack A, Chai HB, Goetz M, Kinghorn AD. Cytotoxic Barrigenol-like Triterpenoids from an Extract of Cyrilla racemiflora Housed in a Repository. J Nat Prod 2015; 78:2440-6. [PMID: 26422131 PMCID: PMC4619146 DOI: 10.1021/acs.jnatprod.5b00532] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Two new [(+)-cyrillins A (1) and B (2)] and four known barrigenol-like triterpenoids (3-6), along with betulinic acid and (+)-3β-O-trans-feruloylbetulinic acid, were isolated from a sample-restricted CH2Cl2-soluble extract of the bark of Cyrilla racemiflora, collected in Dominica. The structures of the new compounds were elucidated by interpretation of their spectroscopic data, and the absolute configuration of the cyclic 1,2-diol unit of (+)-cyrillin A (1) was ascertained by analysis of the electronic circular dichroism (ECD) spectrum induced with [Mo2(OAc)4]. In the case of (+)-cyrillin B (2), which was found to contain a diangeloylated glucose residue, the structure proposed was supported by analysis of its MS(2) and MS(3) spectra. All compounds isolated were evaluated for their cytotoxicity against HT-29 human colon cancer cells, and the known compound, (+)-barringtogenol B (3), was found to be the most potent, exhibiting an IC50 value of 1.7 μM. This compound also showed inhibitory activity toward the CCD-112CoN human normal colon cell line, with an IC50 value of 5.9 μM, indicating a lack of cytotoxic selectivity.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Andrew VanSchoiack
- Mass Spectrometry and Proteomics Facility, Campus Chemical Instrument Center, The Ohio State University, Columbus, OH 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Michael Goetz
- Natural Products Discovery Institute, Baruch S. Blumberg Institute, Doylestown, PA 18902, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
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9
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Addo EM, Chai HB, Hymete A, Yeshak MY, Slebodnick C, Kingston DGI, Rakotondraibe LH. Antiproliferative Constituents of the Roots of Ethiopian Podocarpus falcatus and Structure Revision of 2α-Hydroxynagilactone F and Nagilactone I. J Nat Prod 2015; 78:827-35. [PMID: 25807242 DOI: 10.1021/np501062f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Bioassay-guided fractionation using the human colorectal adenocarcinoma (HT-29) cell line of the methanol extract of dried roots of Podocarpus falcatus led to the isolation of two new type C nagilactones, 16-hydroxynagilactone F (1) and 2β,16-dihydroxynagilactone F (2), and the new totarane-type bisditerpenoid 7β-hydroxymacrophyllic acid (4), along with the seven known compounds 2β-hydroxynagilactone F (3), macrophyllic acid (5), nagilactone D (6), 15-hydroxynagilactone D (7), nagilactone I (8), inumakiol D (9), and ponasterone A (10). The structures of the new compounds were determined by 1D and 2D NMR, HRESIMS, UV, and IR and by comparison with the reported spectroscopic data of their congeners. The orientation of the C-2 hydroxy group of 3 and 8 was revised to be β based on evidence from detailed analysis of 1D and 2D NMR data and single-crystal X-ray diffraction studies. Among the isolated compounds, the nagilactones, including the new dilactones 16-hydroxynagilactone F (1) and 2β,16-dihydroxynagilactone F (2), were the most active (IC50 0.3-5.1 μM range) against the HT-29 cell line, whereas the bisditerpenoids (4 and 5) and the other known compounds 9 and 10 were inactive. The presence of the bioactive nagilactones in P. falcatus supports its traditional use.
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Affiliation(s)
- Ermias Mekuria Addo
- †Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- ‡Department of Pharmaceutical Chemistry and Pharmcognosy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Hee-Byung Chai
- †Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ariaya Hymete
- ‡Department of Pharmaceutical Chemistry and Pharmcognosy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Mariamawit Yonathan Yeshak
- ‡Department of Pharmaceutical Chemistry and Pharmcognosy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Carla Slebodnick
- §Department of Chemistry and Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - David G I Kingston
- §Department of Chemistry and Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - L Harinantenaina Rakotondraibe
- †Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
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10
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Ren Y, Yuan C, Deng Y, Kanagasabai R, Ninh TN, Tu VT, Chai HB, Soejarto DD, Fuchs JR, Yalowich JC, Yu J, Kinghorn AD. Cytotoxic and natural killer cell stimulatory constituents of Phyllanthus songboiensis. Phytochemistry 2015; 111:132-40. [PMID: 25596805 PMCID: PMC4333069 DOI: 10.1016/j.phytochem.2014.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/05/2014] [Accepted: 12/11/2014] [Indexed: 05/04/2023]
Abstract
A dichapetalin-type triterpenoid and a dibenzylbutyrolactone-type lignan, together with five known lignans, a known aromatic diterpenoid, and a known acylated phytosterol, were isolated from the aerial parts of Phyllanthus songboiensis, collected in Vietnam. Their structures were determined by interpretation of the spectroscopic data, and the inhibitory activity toward HT-29 human colon cancer cells of all isolates was evaluated by a cytotoxicity assay. The known arylnaphthalene lignan, (+)-acutissimalignan A, was highly cytotoxic toward HT-29 cells, with an IC50 value of 19 nM, but this compound was inactive as a DNA topoisomerase IIα (topo IIα) poison. The known phytosterol, (-)-β-sitosterol-3-O-β-D-(6-O-palmitoyl)glucopyranoside, was found to stimulate natural killer (NK) cells at a concentration of 10μM in the presence of interleukin 12 (IL-12).
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Chunhua Yuan
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH 43210, USA
| | - Youcai Deng
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Ragu Kanagasabai
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Vuong Tan Tu
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Djaja D Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA; Science and Education, Field Museum of Natural History, Chicago, IL 60605, USA
| | - James R Fuchs
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Jack C Yalowich
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Jianhua Yu
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA; Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA.
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11
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Pérez LB, Still PC, Naman CB, Ren Y, Pan L, Chai HB, Carcache de Blanco EJ, Ninh TN, Van Thanh B, Swanson SM, Soejarto DD, Kinghorn AD. Investigation of Vietnamese plants for potential anticancer agents. Phytochem Rev 2014; 13:727-739. [PMID: 25395897 PMCID: PMC4225705 DOI: 10.1007/s11101-014-9335-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Higher plants continue to afford humankind with many new drugs, for a variety of disease types. In this review, recent phytochemical and biological progress is presented for part of a collaborative multi-institutional project directed towards the discovery of new antitumor agents. The specific focus is on bioactive natural products isolated and characterized structurally from tropical plants collected in Vietnam. The plant collection, identification, and processing steps are described, and the natural products isolated from these species are summarized with their biological activities.
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Affiliation(s)
- Lynette Bueno Pérez
- College of Pharmacy, The Ohio State University, 500 West 12 Avenue, Columbus, OH 43210, USA
| | - Patrick C Still
- College of Pharmacy, The Ohio State University, 500 West 12 Avenue, Columbus, OH 43210, USA
| | - C Benjamin Naman
- College of Pharmacy, The Ohio State University, 500 West 12 Avenue, Columbus, OH 43210, USA
| | - Yulin Ren
- College of Pharmacy, The Ohio State University, 500 West 12 Avenue, Columbus, OH 43210, USA
| | - Li Pan
- College of Pharmacy, The Ohio State University, 500 West 12 Avenue, Columbus, OH 43210, USA
| | - Hee-Byung Chai
- College of Pharmacy, The Ohio State University, 500 West 12 Avenue, Columbus, OH 43210, USA
| | | | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Bui Van Thanh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Steven M Swanson
- College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
| | - Djaja D Soejarto
- College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA. Department of Botany, Field Museum, 1400 South Lake Shore Drive, Chicago, IL 60605, USA
| | - A Douglas Kinghorn
- College of Pharmacy, The Ohio State University, 500 West 12 Avenue, Columbus, OH 43210, USA
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12
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Ren Y, Lantvit D, Deng Y, Kanagasabai R, Gallucci JC, Ninh TN, Chai HB, Soejarto DD, Fuchs J, Yalowich JC, Yu J, Swanson SM, Kinghorn AD. Potent cytotoxic arylnaphthalene lignan lactones from Phyllanthus poilanei. J Nat Prod 2014; 77:1494-504. [PMID: 24937209 PMCID: PMC4073661 DOI: 10.1021/np5002785] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Indexed: 05/19/2023]
Abstract
Two new (1 and 2) and four known arylnaphthalene lignan lactones (3-6) were isolated from different plant parts of Phyllanthus poilanei collected in Vietnam, with two further known analogues (7 and 8) being prepared from phyllanthusmin C (4). The structures of the new compounds were determined by interpretation of their spectroscopic data and by chemical methods, and the structure of phyllanthusmin D (1) was confirmed by single-crystal X-ray diffraction analysis. Several of these arylnaphthalene lignan lactones were cytotoxic toward HT-29 human colon cancer cells, with compounds 1 and 7-O-[(2,3,4-tri-O-acetyl)-α-L-arabinopyranosyl)]diphyllin (7) found to be the most potent, exhibiting IC50 values of 170 and 110 nM, respectively. Compound 1 showed activity when tested in an in vivo hollow fiber assay using HT-29 cells implanted in immunodeficient NCr nu/nu mice. Mechanistic studies showed that this compound mediated its cytotoxic effects by inducing tumor cell apoptosis through activation of caspase-3, but it did not inhibit DNA topoisomerase IIα activity.
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Affiliation(s)
- Yulin Ren
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Daniel
D. Lantvit
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Youcai Deng
- Division
of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ragu Kanagasabai
- Division
of Pharmacology, College of Pharmacy, The
Ohio State University, Columbus, Ohio 43210, United States
| | - Judith C. Gallucci
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United States
| | - Tran Ngoc Ninh
- Institute
of Ecology and Biological Resources, Vietnam
Academy of Science and Technology, Hoang
Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hee-Byung Chai
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Djaja D. Soejarto
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Department
of Botany, Field Museum of Natural History, Chicago, Illinois 60605, United States
| | - James
R. Fuchs
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jack C. Yalowich
- Division
of Pharmacology, College of Pharmacy, The
Ohio State University, Columbus, Ohio 43210, United States
| | - Jianhua Yu
- Division
of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
- Comprehensive
Cancer Center, The Ohio State University, Columbus, Ohio 43210, United States
| | - Steven M. Swanson
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - A. Douglas Kinghorn
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Tel: +1 614 247-8094. Fax: +1 614 247-8642. E-mail:
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13
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Ren Y, Yuan C, Qian Y, Chai HB, Chen X, Goetz M, Kinghorn AD. Constituents of an extract of Cryptocarya rubra housed in a repository with cytotoxic and glucose transport inhibitory effects. J Nat Prod 2014; 77:550-6. [PMID: 24344605 PMCID: PMC4047178 DOI: 10.1021/np400809w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A new alkylated chalcone (1), a new 1,16-hexadecanediol diester (2), and eight known compounds were isolated from a dichloromethane-soluble repository extract of the leaves and twigs of Cryptocarya rubra collected in Hawaii. The structures of the new compounds were determined by interpretation of their spectroscopic data, and the absolute configurations of the two known cryptocaryanone-type flavonoid dimers, (+)-bicaryanone A (3) and (+)-chalcocaryanone C (4), were ascertained by analysis of their electronic circular dichroism and NOESY NMR spectra. All compounds isolated were evaluated against HT-29 human colon cancer cells, and, of these, (+)-cryptocaryone (5) was found to be potently cytotoxic toward this cancer cell line, with an IC50 value of 0.32 μM. This compound also exhibited glucose transport inhibitory activity when tested in a glucose uptake assay.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Chunhua Yuan
- Campus Chemical Instrument Center, The Ohio State University, Columbus, OH 43210, United States
| | - Yanrong Qian
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, United States
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, United States
- Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Xiaozhuo Chen
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH 45701, United States
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, United States
- Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States
- Department of Biomedical Sciences, Ohio University, Athens, OH 45701, United States
| | - Michael Goetz
- Natural Products Discovery Institute, Institute for Hepatitis and Virus Research, Doylestown, PA 18902, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
- Corresponding Author. Tel.: +1 614 247-8094. Fax: +1 614 247-8642.
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14
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Bueno Pérez L, Pan L, Muñoz Acuña U, Li J, Chai HB, Gallucci JC, Ninh TN, Carcache de Blanco EJ, Soejarto DD, Kinghorn AD. Caeruleanone A, a rotenoid with a new arrangement of the D-ring from the fruits of Millettia caerulea. Org Lett 2014; 16:1462-5. [PMID: 24552419 PMCID: PMC3954433 DOI: 10.1021/ol500266z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Caeruleanone A (1), a novel rotenoid with an unprecedented
arrangement of the D-ring, was isolated with another two new analogues,
caeruleanones B (2) and C (3), together
with 11 known rotenoids from the fruits of Millettia caerulea. The structures of the new compounds were determined by spectroscopic
data analysis, with that of 1 being confirmed by single-crystal
X-ray diffraction. Compounds 2 and 3 displayed
potent mitochondrial transmembrane potential inhibitory and quinone
reductase induction activities.
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Affiliation(s)
- Lynette Bueno Pérez
- Division of Medicinal Chemistry and Pharmacognosy, ‡Division of Pharmacy Practice and Administration, College of Pharmacy, §Department of Chemistry and Biochemistry, The Ohio State University , Columbus, Ohio 43210, United States
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15
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Pérez LB, Li J, Lantvit DD, Pan L, Ninh TN, Chai HB, Soejarto DD, Swanson SM, Lucas DM, Kinghorn AD. Bioactive constituents of Indigofera spicata. J Nat Prod 2013; 76:1498-504. [PMID: 23895019 PMCID: PMC3806331 DOI: 10.1021/np400567c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Four new flavanones, designated as (+)-5″-deacetylpurpurin (1), (+)-5-methoxypurpurin (2), (2S)-2,3-dihydrotephroglabrin (3), and (2S)-2,3-dihydrotephroapollin C (4), together with two known flavanones (5 and 6), three known rotenoids (7-9), and one known chalcone (10) were isolated from a chloroform-soluble partition of a methanol extract from the combined flowers, fruits, leaves, and twigs of Indigofera spicata, collected in Vietnam. The compounds were obtained by bioactivity-guided isolation using the HT-29 human colon cancer, 697 human acute lymphoblastic leukemia, and Raji human Burkitt's lymphoma cell lines. The structures of 1-4 were established by extensive 1D- and 2D-NMR experiments, and the absolute configurations were determined by the measurement of specific rotations and CD spectra. The cytotoxic activities of the isolated compounds were tested against the HT-29, 697, Raji, and CCD-112CoN human normal colon cells. Also, the quinone reductase induction activities of the isolates were determined using the Hepa 1c1c7 murine hepatoma cell line. In addition, cis-(6aβ,12aβ)-hydroxyrotenone (7) was evaluated in an in vivo hollow fiber bioassay using HT-29, MCF-7 human breast cancer, and MDA-MB-435 human melanoma cells.
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Affiliation(s)
- Lynette Bueno Pérez
- Division of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United
States
| | - Jie Li
- Division of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United
States
| | - Daniel D. Lantvit
- Department of Medicinal Chemistry and
Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL
60612, United States
| | - Li Pan
- Division of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United
States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources,
Vietnamese Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi,
Vietnam
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United
States
| | - Djaja Djendoel Soejarto
- Department of Medicinal Chemistry and
Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL
60612, United States
- Science and Education, Field Museum, 1400 S. Lake
Shore Dr., Chicago, IL 60605, United States
| | - Steven M. Swanson
- Department of Medicinal Chemistry and
Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL
60612, United States
| | - David M. Lucas
- Division of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United
States
- Division of Hematology, College of Medicine, The
Ohio State University, Columbus, Ohio 43210, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy,
College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United
States
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16
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Still PC, Yi B, González-Cestari TF, Pan L, Pavlovicz RE, Chai HB, Ninh TN, Li C, Soejarto DD, McKay DB, Kinghorn AD. Alkaloids from Microcos paniculata with cytotoxic and nicotinic receptor antagonistic activities. J Nat Prod 2013; 76:243-9. [PMID: 23327794 PMCID: PMC3580017 DOI: 10.1021/np3007414] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Microcos paniculata is a large shrub or small tree that grows in several countries in South and Southeast Asia. In the present study, three new piperidine alkaloids, microgrewiapines A-C (1-3), as well as three known compounds, inclusive of microcosamine A (4), 7'-(3',4'-dihydroxyphenyl)-N-[4-methoxyphenyl)ethyl]propenamide (5), and liriodenine (6), were isolated from cytotoxic fractions of the separate chloroform-soluble extracts of the stem bark, branches, and leaves of M. paniculata. Compounds 1-6 and 1a (microgrewiapine A 3-acetate) showed a range of cytotoxicity values against the HT-29 human colon cancer cell line. When evaluated for their effects on human α3β4 or α4β2 nicotinic acetylcholine receptors (nAChRs), several of these compounds were shown to be active as nAChR antagonists. As a result of this study, microgrewiapine A (1) was found to be a selective cytotoxic agent for colon cancer cells over normal colon cells and to exhibit nicotinic receptor antagonistic activity for both the hα3β4 and hα4β2 receptor subtypes.
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Affiliation(s)
- Patrick C. Still
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Bitna Yi
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Tatiana F. González-Cestari
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ryan E. Pavlovicz
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Biophysics Graduate Program, The Ohio State University, Columbus, Ohio 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnamese Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Chenglong Li
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Djaja Djendoel Soejarto
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Department of Botany, Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, United States
| | - Dennis B. McKay
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
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17
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Abstract
Small organic molecules derived from higher plants have been one of the mainstays of cancer chemotherapy for approximately the past half a century. In the present review, selected single chemical entity natural products of plant origin and their semi-synthetic derivatives currently in clinical trials are featured as examples of new cancer chemotherapeutic drug candidates. Several more recently isolated compounds obtained from plants showing promising in vivo biological activity are also discussed in terms of their potential as anticancer agents, with many of these obtained from species that grow in tropical regions. Since extracts of only a relatively small proportion of the ca. 300,000 higher plants on earth have been screened biologically to date, bioactive compounds from plants should play an important role in future anticancer drug discovery efforts.
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Affiliation(s)
- Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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18
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Abstract
Small organic molecules derived from higher plants have been one of the mainstays of cancer chemotherapy for approximately the past half a century. In the present review, selected single chemical entity natural products of plant origin and their semi-synthetic derivatives currently in clinical trials are featured as examples of new cancer chemotherapeutic drug candidates. Several more recently isolated compounds obtained from plants showing promising in vivo biological activity are also discussed in terms of their potential as anticancer agents, with many of these obtained from species that grow in tropical regions. Since extracts of only a relatively small proportion of the ca. 300,000 higher plants on earth have been screened biologically to date, bioactive compounds from plants should play an important role in future anticancer drug discovery efforts.
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Affiliation(s)
- Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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19
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Deng Y, Chin YW, Chai HB, de Blanco EC, Kardono LBS, Riswan S, Soejarto DD, Farnsworth NR, Kinghorn AD. Phytochemical and Bioactivity Studies on Constituents of the Leaves of Vitex Quinata. Phytochem Lett 2011; 4:213-217. [PMID: 21966342 PMCID: PMC3182149 DOI: 10.1016/j.phytol.2011.03.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A phytochemical investigation of the leaves of Vitex quinata (Lour.) F.N. Williams (Verbenaceae), guided by the MCF-7 human breast cancer cell line, led to the isolation of a new δ-truxinate derivative (1) and a new phytonoic acid derivative (2), together with 12 known compounds. The structures of the new compounds were determined by spectroscopic methods as dimethyl 3,4,3',4'-tetrahydroxy-δ-truxinate (1) and methyl 10R-methoxy-12-oxo-9(13),16E-phytodienoate (2), respectively. In a cytotoxicity assay, (S)-5-hydroxy-7,4'-dimethoxyflavanone (3) was found to be the sole active principle, with ED(50) values of 1.1-6.7 μM, respectively, when tested against a panel of three human cancer cells. Methyl 3,4,5-O-tricaffeoyl quinate (4) showed activity in an enzyme-based ELISA NF-κB p65 assay, with an ED(50) value of 10.3 μM.
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Affiliation(s)
- Ye Deng
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Young-Won Chin
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Esperanza Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Leonardus B. S. Kardono
- Research and Development Chemistry, Indonesian Institute of Science, Serpong, 15310 Tangerang, Indonesia
| | - Soedarsano Riswan
- Herbarium Bogoriense, Research Center for Biology, Indonesian Institute of Science, 16122 Bogor, Indonesia
| | - Djaja D. Soejarto
- College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | | | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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Pan L, Lantvit DD, Riswan S, Kardono LB, Chai HB, Carcache de Blanco EJ, Farnsworth NR, Soejarto DD, Swanson SM, Kinghorn AD. Bioactivity-guided isolation of cytotoxic sesquiterpenes of Rolandra fruticosa. Phytochemistry 2010; 71:635-40. [PMID: 20189206 PMCID: PMC2847506 DOI: 10.1016/j.phytochem.2010.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Revised: 01/06/2010] [Accepted: 01/21/2010] [Indexed: 05/10/2023]
Abstract
Cytotoxicity-guided fractionation of a methanol extract of the leaves and twigs of Rolandra fruticosa using the HT-29 human colon cancer cell line led to the isolation of seven sesquiterpene lactones, including the hitherto unknown isorolandrolide, 13-methoxyisorolandrolide (1), and bourbonenolide, 2alpha,13-diacetoxy-4alpha-hydroxy-8alpha-isobutyroyloxybourbonen-12,6alpha-olide (2), as well as five known compounds, 13-acetoxyrolandrolide (3), 8-desacyl-13-acetoxyrolandrolide-8-O-tiglate (4), 2-epi-glaucolide E (5), 2alpha,13-diacetoxy-4alpha-hydroxy-8alpha-methacryloyloxybourbonen-12,6alpha-olide (6), and 2alpha,13-diacetoxy-4alpha-hydroxy-8alpha-tigloyloxybourbonen-12,6alpha-olide (7). The structures of the two sesquiterpenes were elucidated on the basis of spectroscopic methods. All isolates were evaluated for their cytotoxicity using the HT-29 cell line, and only 13-acetoxyrolandrolide (3) was found to possess a potent inhibitory effect against this cell line. Compounds 3, 5 and 6 were also tested in a NF-kappaB (p65) inhibition assay, and 3 was assessed in an in vivo hollow fiber assay.
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Affiliation(s)
- Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, OH 43210, USA
| | - Daniel D. Lantvit
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, IL 60612, USA
| | - Soedarsono Riswan
- Research Center for Chemistry, Indonesian Institute of Science, Tangerang 15310, Indonesia
| | - Leonardus B.S. Kardono
- Herbarium Bogoriense, Research Center for Biology, Indonesian Institute of Science, Bogor 16122, Indonesia
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, OH 43210, USA
| | | | - Norman R. Farnsworth
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, IL 60612, USA
| | - Djaja Doel Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, IL 60612, USA
- Department of Botany, Field Museum, 1400 S. Lake Shore Dr., Chicago, IL 60605, USA
| | - Steven M. Swanson
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, IL 60612, USA
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, OH 43210, USA
- Corresponding author. Tel.: +1-614-247-8094; Fax: +1-614-247-8642. (A. D. Kinghorn)
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Kinghorn AD, Carcache de Blanco EJ, Chai HB, Orjala J, Farnsworth NR, Soejarto DD, Oberlies NH, Wani MC, Kroll DJ, Pearce CJ, Swanson SM, Kramer RA, Rose WC, Fairchild CR, Vite GD, Emanuel S, Jarjoura D, Cope FO. Discovery of anticancer agents of diverse natural origin. ACTA ACUST UNITED AC 2009; 81:1051-1063. [PMID: 20046887 DOI: 10.1351/pac-con-08-10-16] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A collaborative multidisciplinary research project is described in which new natural product anticancer drug leads are obtained from a diverse group of organisms, constituted by tropical plants, aquatic cyanobacteria, and filamentous fungi. Information is provided on how these organisms are collected and processed. The types of bioassays are indicated in which crude extracts of these acquisitions are tested. Progress made in the isolation of lead bioactive secondary metabolites from three tropical plants is discussed.
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22
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Pan L, Chin YW, Chai HB, Ninh TN, Soejarto DD, Kinghorn AD. Bioactivity-guided isolation of cytotoxic constituents of Brucea javanica collected in Vietnam. Bioorg Med Chem 2009; 17:2219-24. [PMID: 19026551 PMCID: PMC2683946 DOI: 10.1016/j.bmc.2008.10.076] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2008] [Revised: 06/04/2008] [Accepted: 10/31/2008] [Indexed: 10/21/2022]
Abstract
Five new triterpenoids (1-5), together with two known quassinoids, bruceantin (6) and bruceine A (7), and a known flavonolignan, (-)-hydnocarpin (8), were isolated from the chloroform-soluble subfraction of a methanol extract of the combined twigs, leaves, and inflorescence of Brucea javanica collected in Vietnam. The structures of the new compounds 1-5 were established on the basis of spectroscopic methods. All isolates were evaluated for cytotoxicity against a small panel of human cancer cell lines. Quassinoids 6 and 7 were found to be highly active against these cell lines. (-)-Hydnocarpin (8) showed a potentiating effect when combined with both 6 and 7, during cytotoxicity testing using the MCF-7 human breast cancer cell line.
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Affiliation(s)
- Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 West 12th Avenue, Columbus, OH 43210, USA
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Chin YW, Chai HB, Keller WJ, Kinghorn AD. Lignans and other constituents of the fruits of Euterpe oleracea (Acai) with antioxidant and cytoprotective activities. J Agric Food Chem 2008; 56:7759-7764. [PMID: 18656934 DOI: 10.1021/jf801792n] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Using a hydroxyl radical scavenging assay, bioactivity-guided fractionation of a methanol-soluble extract of the fruits of Euterpe oleracea (acai) led to the isolation of 22 compounds of previously known structure. Altogether, 14 of these isolates were found to be active in an in vitro hydroxyl radical scavenging assay and seven of these isolates in a 1,1-diphenyl-2-picrylhydrazyl radical scavenging assay. Dihydroconiferyl alcohol, (+)-lariciresinol, (+)-pinoresinol, (+)-syringaresinol, and protocatechuic acid methyl ester exhibited cytoprotective activity in cultured MCF-7 cells stressed by H2O2. Lignans have not been previously reported as constituents of this species and were found to be representative of the aryltetrahydronaphthalene, dihydrobenzofuran, furofuran, 8-O-4'-neolignan, and tetrahydrofuran structural types.
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Affiliation(s)
- Young-Won Chin
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, 500 West 12th Avenue, Columbus, Ohio 43210, USA
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Chin YW, Salim AA, Su BN, Mi Q, Chai HB, Riswan S, Kardono LBS, Ruskandi A, Farnsworth NR, Swanson SM, Kinghorn AD. Potential anticancer activity of naturally occurring and semisynthetic derivatives of aculeatins A and B from Amomum aculeatum. J Nat Prod 2008; 71:390-5. [PMID: 18260638 PMCID: PMC2518721 DOI: 10.1021/np070584j] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Activity-guided fractionation of hexanes- and CHCl 3-soluble extracts of Amomum aculeatum leaves, collected in Indonesia, led to the isolation of three new dioxadispiroketal-type ( 3- 5) and two new oxaspiroketal-type ( 6 and 7) derivatives. Nine semisynthetic derivatives ( 1a- 1h and 2a) of the parent compounds, aculeatins A ( 1) and B ( 2), were prepared. All isolates and semisynthetic compounds were tested against a small panel of human cell lines. Of these, aculeatin A ( 1; ED 50 0.2-1.0 microM) was found to be among the most cytotoxic of the compounds tested and was further evaluated in an in vivo hollow fiber assay; it was found to be active against MCF-7 (human breast cancer) cells implanted intraperitoneally at doses of 6.25, 12.5, 25, and 50 mg/kg. However, when 1 was tested using P388 lymphocytic leukemia and human A2780 ovarian carcinoma in vivo models, it was deemed to be inactive at the doses used.
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Affiliation(s)
- Young-Won Chin
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210
| | - Angela A. Salim
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210
| | - Bao-Ning Su
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210
| | - Qiuwen Mi
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210
| | - Soedarsono Riswan
- Herbarium Bogoriense, Research Center for Biology, Indonesian Institute of Science, Bogor 16122, Indonesia
| | | | - Agus Ruskandi
- Herbarium Bogoriense, Research Center for Biology, Indonesian Institute of Science, Bogor 16122, Indonesia
| | - Norman R. Farnsworth
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612
| | - Steven M. Swanson
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210
- To whom correspondence should be addressed. Tel.: +1 614 247 8094. Fax: +1 614 247 8081. E-mail:
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Balunas MJ, Jones WP, Chin YW, Mi Q, Farnsworth NR, Soejarto DD, Cordell GA, Swanson SM, Pezzuto JM, Chai HB, Kinghorn AD. Relationships between inhibitory activity against a cancer cell line panel, profiles of plants collected, and compound classes isolated in an anticancer drug discovery project. Chem Biodivers 2007; 3:897-915. [PMID: 17193321 DOI: 10.1002/cbdv.200690092] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In an attempt to determine the relationships between the plant profiles (country of collection, taxonomy, plant part) and the compound classes isolated with cytotoxic activity against a panel of human tumor cell lines, the data compiled from a 15-year anticancer drug-discovery project were subjected to an analysis of variance (ANOVA). The results indicate significant trends in cytotoxic activity relative to collection location, taxonomy, plant part, and compound classes isolated. Plant collections were made in tropical forests in six countries, with collections from Ecuador resulting in higher activity than those from Indonesia and Peru. Interestingly, collections from Florida were not statistically different than those from the countries with higher biodiversity. One hundred and forty-five families were represented in the collections, with the Clusiaceae, Elaeocarpaceae, Meliaceae, and Rubiaceae having low ED50 (half maximal effective dose) values. Especially active genera included Aglaia, Casearia, Exostema, Mallotus, and Trichosanthes. Roots and below-ground plant materials were significantly more active than above-ground materials. Cucurbitacins, flavaglines, anthraquinones, fatty acids, tropane alkaloids, lignans, and sesquiterpenoids were significantly more active than xanthones and oligorhamnosides. The results from this study should serve as a guide for future plant collection endeavors for anticancer drug discovery.
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Affiliation(s)
- Marcy J Balunas
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street (M/C 781), Chicago, IL 60612, USA
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26
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Salim AA, Su BN, Chai HB, Riswan S, Kardono LBS, Ruskandi A, Farnsworth NR, Swanson SM, Kinghorn AD. Dioxadispiroketal Compounds and a Potential Acyclic Precursor from Amomum aculeatum. Tetrahedron Lett 2007; 48:1849-1853. [PMID: 18320008 PMCID: PMC1950142 DOI: 10.1016/j.tetlet.2007.01.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Four new compounds having an unusual 1,7-dioxadispiro[5.1.5.2]-12-ene-11-one tricyclic ring system (1-4), their potential precursor, 5R-hydroxy-1-(4-hydroxyl-phenyl)-eicosan-3-one (5), and two known compounds, aculeatins A (6) and B (7), have been isolated from Amomum aculeatum. All compounds were characterized by spectroscopic methods and the configurations were established by 2D NOE correlations. Compounds 1-4, 6 and 7 showed cytotoxic activity against several human cancer cell lines.
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Affiliation(s)
- Angela A. Salim
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Bao-Ning Su
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Soedarsono Riswan
- Research and Development Center for Biology, Indonesian Institute of Science, Bogor 16122, Indonesia
| | | | - Agus Ruskandi
- Research and Development Center for Biology, Indonesian Institute of Science, Bogor 16122, Indonesia
| | - Norman R. Farnsworth
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Steven M. Swanson
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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Salim AA, Pawlus AD, Chai HB, Farnsworth NR, Kinghorn AD, Carcache-Blanco EJ. Ponapensin, a cyclopenta[bc]benzopyran with potent NF-kappaB inhibitory activity from Aglaia ponapensis. Bioorg Med Chem Lett 2007; 17:109-12. [PMID: 17055270 PMCID: PMC2786496 DOI: 10.1016/j.bmcl.2006.09.084] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 09/22/2006] [Accepted: 09/27/2006] [Indexed: 11/25/2022]
Abstract
Two new compounds, a cyclopenta[bc]benzopyran, ponapensin (1), and an aglaialactone, 5,6-desmethylenedioxy-5-methoxy-aglalactone (2), together with nine known compounds were isolated from the CHCl(3) soluble extract of the leaves and twigs of Aglaia ponapensis. Their structures were established by spectroscopic data interpretation. Ponapensin (1) exhibited significant NF-kappaB inhibitory activity in an Elisa assay, and was found to be more potent than the positive control rocaglamide. All of the compounds isolated were also tested in a panel of human cancer cell lines, with the known sterol E-volkendousin (3) and methyl rocaglate (aglafoline) found to be the only active substances.
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Affiliation(s)
- Angela A. Salim
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, U.S.A
| | - Alison D. Pawlus
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, U.S.A
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, U.S.A
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, U.S.A
| | - Norman R. Farnsworth
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, U.S.A
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, U.S.A
| | - Esperanza J. Carcache-Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, U.S.A
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, OH 43210, U.S.A
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Chin YW, Mdee LK, Mbwambo ZH, Mi Q, Chai HB, Cragg GM, Swanson SM, Kinghorn AD. Prenylated flavonoids from the root bark of Berchemia discolor, a Tanzanian medicinal plant. J Nat Prod 2006; 69:1649-52. [PMID: 17125241 PMCID: PMC2471879 DOI: 10.1021/np060418w] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Five new prenylated flavonoids (1-5) were isolated from the root bark of Berchemia discolor, collected in Tanzania, along with 10 known compounds, by bioactivity-guided fractionation. The structures of compounds 1-5 were elucidated using various spectroscopic techniques. Of these isolates, compound 4, and the known compounds nitidulin (6), amorphigenin (7), and dabinol (8), exhibited cytotoxic activity when evaluated against a small panel of human cancer cells. Nitidulin (6) was further tested in an in vivo hollow fiber assay and found to be active against LNCaP (human hormone-dependent prostate cancer) cells implanted intraperitoneally, at doses of 10, 20, and 40 mg/kg.
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Affiliation(s)
| | | | | | | | | | | | | | - A. Douglas Kinghorn
- *To whom correspondence should be addressed. Tel.: +1 614 247 8094. fax: +1 614 247 8081. E-mail address:
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Chin YW, Jones WP, Rachman I, Riswan S, Kardono LBS, Chai HB, Farnsworth NR, Cordell GA, Swanson SM, Cassady JM, Kinghorn AD. Cytotoxic lignans from the stems of Helicteres hirsuta collected in Indonesia. Phytother Res 2006; 20:62-5. [PMID: 16397845 DOI: 10.1002/ptr.1806] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Cytotoxicity-guided fractionation of the stems of Helicteres hirsuta, of Indonesian origin, led to the isolation and identification of six lignans, namely, (+/-)-pinoresinol, (+/-)-medioresinol, (+/-)-syringaresinol, (-)-boehmenan, (-)-boehmenan H and (+/-)-trans-dihydrodiconiferyl alcohol. Of these isolates, (+/-)-pinoresinol exhibited potent cytotoxic effects when evaluated against a small panel of cancer cell lines.
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Affiliation(s)
- Young-Won Chin
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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30
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Chin YW, Jones WP, Mi Q, Rachman I, Riswan S, Kardono LBS, Chai HB, Farnsworth NR, Cordell GA, Swanson SM, Cassady JM, Kinghorn AD. Cytotoxic clerodane diterpenoids from the leaves of Premna tomentosa. Phytochemistry 2006; 67:1243-8. [PMID: 16777158 DOI: 10.1016/j.phytochem.2006.04.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2006] [Revised: 04/07/2006] [Accepted: 04/12/2006] [Indexed: 05/10/2023]
Abstract
Three clerodane diterpenoids, premnones A-C (1-3), were isolated from a chloroform-soluble fraction of Premna tomentosa along with four known flavonoids and three known triterpenoids. Among these isolates, premnones A-C exhibited cytotoxic activity when evaluated against a small panel of tumor cell lines. However, premnone A was found to be inactive when evaluated in a follow-up in vivo hollow fiber assay at the highest dose tested (50mg/kg), using LNCaP, Lu1, and MCF-7 cells.
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Affiliation(s)
- Young-Won Chin
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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31
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Fang L, Ito A, Chai HB, Mi Q, Jones WP, Madulid DR, Oliveros MB, Gao Q, Orjala J, Farnsworth NR, Soejarto DD, Cordell GA, Swanson SM, Pezzuto JM, Kinghorn AD. Cytotoxic constituents from the stem bark of Dichapetalum gelonioides collected in the Philippines. J Nat Prod 2006; 69:332-7. [PMID: 16562829 PMCID: PMC2543135 DOI: 10.1021/np058083q] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Fractionation of an ethyl acetate-soluble extract of the stem bark of Dichapetalum gelonioides, collected in the Philippines, using the LNCaP (hormone-dependent human prostate) cell line as a monitor, led to the purification of three dichapetalin-type triterpenoids [dichapetalins A (1), I (2), and J (3)], along with two dolabrane norditerpenoids (6, 7), and the additional triterpenoids zeylanol (8), 28-hydroxyzeylanol (9), and betulinic acid. Since compounds 1-3 exhibited promising selectivity against the SW626 (human ovarian cancer) cell line, a re-collection of the plant material was carried out, to obtain more of these compounds for additional biological testing. Two further phenylpyranotriterpenoids [dichapetalins K (4) and L (5)] were isolated from the re-collected plant material. The structures of the new compounds 2-5 and 9 were determined on the basis of spectroscopic data interpretation, and the relative configuration of 6 was confirmed using X-ray crystallography. Compounds 4-6 and the methyl ester, 6a, exhibited broad cytotoxic activity when tested against a panel of human tumor cell lines. Dichapetalin A (1) was not active when evaluated in an in vivo hollow fiber assay in the dose range 1-6 mg/kg.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - A. Douglas Kinghorn
- Author to whom correspondence should be addressed. Tel.: (614) 247-8094. Fax: (614) 247-8642. E-mail:
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32
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Rivero-Cruz JF, Lezutekong R, Lobo-Echeverri T, Ito A, Mi Q, Chai HB, Soejarto DD, Cordell GA, Pezzuto JM, Swanson SM, Morelli I, Kinghorn AD. Cytotoxic constituents of the twigs of Simarouba glauca collected from a plot in Southern Florida. Phytother Res 2005; 19:136-40. [PMID: 15852485 DOI: 10.1002/ptr.1642] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Activity-guided fractionation of a chloroform-soluble extract of Simarouba glauca twigs collected from a plot in southern Florida, and monitored with a human epidermoid (KB) tumor cell line, afforded six canthin-6-one type alkaloid derivatives, canthin-6-one (1), 2-methoxycanthin-6-one (2), 9-methoxycanthin-6-one (3), 2-hydroxycanthin-6-one (4), 4,5-dimethoxycanthin-6-one (5) and 4,5-dihydroxycanthin-6-one (6), a limonoid, melianodiol (7), an acyclic squalene-type triterpenoid, 14-deacetyleurylene (8), two coumarins, scopoletin (9) and fraxidin (10), and two triglycerides, triolein (11) and trilinolein (12). Among these isolates, compounds 1-4, 7 and 8 exhibited cytotoxic activity against several human cancer cell lines. 14-Deacetyleurylene (8) was selectively active against the Lu1 human lung cancer cell line, but was inactive in an in vivo hollow fiber assay using this same cell type.
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Affiliation(s)
- J Fausto Rivero-Cruz
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 60612, USA
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33
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Lobo-Echeverri T, Rivero-Cruz JF, Su BN, Chai HB, Cordell GA, Pezzuto JM, Swanson SM, Soejarto DD, Kinghorn AD. Constituents of the leaves and twigs of Calyptranthes pallens collected from an experimental plot in Southern Florida. J Nat Prod 2005; 68:577-580. [PMID: 15844953 DOI: 10.1021/np0496688] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fractionation of the chloroform-soluble extract of the leaves and twigs of Calyptranthes pallens, collected from an experimental plot in a hardwood forest of southern Florida, using a hormone-dependent human prostate carcinoma (LNCaP) tumor cell line, led to the isolation of a phloroglucinol derivative with a novel carbon skeleton, pallenic acid (1), and a new triterpenoid, 3beta-hydroxy-18alpha,19alpha-urs-20-en-28-oic acid (2). The known compound methylene-bis-aspidinol (3) was selectively active against the human oral epidermoid carcinoma (KB) cell line. Several known compounds of the ellagic acid, lignan, phloroglucinol, sterol, and triterpene types were also obtained in the present investigation.
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MESH Headings
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Drug Screening Assays, Antitumor
- Florida
- Heterocyclic Compounds, 3-Ring/chemistry
- Heterocyclic Compounds, 3-Ring/isolation & purification
- Heterocyclic Compounds, 3-Ring/pharmacology
- Humans
- KB Cells
- Molecular Structure
- Myrtaceae/chemistry
- Nuclear Magnetic Resonance, Biomolecular
- Plant Leaves/chemistry
- Plants, Medicinal/chemistry
- Triterpenes/chemistry
- Triterpenes/isolation & purification
- Triterpenes/pharmacology
- Tumor Cells, Cultured
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Affiliation(s)
- Tatiana Lobo-Echeverri
- Program for Collaborative Research in the Pharmaceutical Sciences, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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34
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Gu JQ, Graf TN, Lee D, Chai HB, Mi Q, Kardono LBS, Setyowati FM, Ismail R, Riswan S, Farnsworth NR, Cordell GA, Pezzuto JM, Swanson SM, Kroll DJ, Falkinham JO, Wall ME, Wani MC, Kinghorn AD, Oberlies NH. Cytotoxic and antimicrobial constituents of the bark of Diospyros maritima collected in two geographical locations in Indonesia. J Nat Prod 2004; 67:1156-1161. [PMID: 15270571 DOI: 10.1021/np040027m] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Bioactivity-directed fractionation of extracts of two Diospyros maritima bark samples from Indonesia,one collected at sea level in a beach forest in Java and the other collected at a slight elevation away from the sea shore on the island of Lombok, yielded a diverse set of secondary metabolites. The naphthoquinone plumbagin (1), although found in extracts of both specimens, constituted a much larger percentage of the former sample, which also yielded a series of plumbagin dimers, maritinone (2), chitranone (3), and zeylanone (4). The latter sample yielded a new naphthoquinone derivative, (4S)-shinanolone (5), and a new natural product coumarin, 7,8-dimethoxy-6-hydroxycoumarin (6), along with three other analogues of plumbagin, 2-methoxy-7-methyljuglone (7), 3-methoxy-7-methyljuglone (8), and 7-methyljuglone (9). The structures of compounds 5 and 6 were elaborated by physical, spectral, and chemical methods. All of the isolates were evaluated in both cytotoxicity and antimicrobial assays, and structure-activity relationships of these naphthoquinones are proposed. Plumbagin (1) and maritinone (2) were evaluated also for in vivo antitumor activity in the hollow fiber assay, but both were found to be inactive.
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Affiliation(s)
- Jian-Qiao Gu
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
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35
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Braca A, Armenise A, Morelli I, Mendez J, Mi Q, Chai HB, Swanson SM, Kinghorn AD, De Tommasi N. Structure of kaurane-type diterpenes from Parinari sprucei and their potential anticancer activity. Planta Med 2004; 70:540-550. [PMID: 15229806 DOI: 10.1055/s-2004-827155] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Twenty-three kaurane-type diterpenes 1 - 23, including twenty new natural products 1 - 20, have been isolated from the leaves of Parinari sprucei and their structures elucidated by spectroscopic and chemical analysis. The isolated compounds were tested for their cytotoxic activity towards a panel of cancer cell lines. Compounds 9 and 10 showed activity against all cell lines with ED (50) values in the range of 10 - 20 microg/mL. The previously known 13-hydroxy-15-oxozoapatlin 21 was evaluated in an in vivo hollow fiber test, and found to be active with KB and LNCaP cells at the concentrations used.
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Affiliation(s)
- Alessandra Braca
- Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Pisa, Italy
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36
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Veras ML, Bezerra MZB, Lemos TLG, Uchoa DEDA, Braz-Filho R, Chai HB, Cordell GA, Pessoa ODL. Cytotoxic withaphysalins from the leaves of Acnistus arborescens. J Nat Prod 2004; 67:710-713. [PMID: 15104512 DOI: 10.1021/np0340347] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Three withaphysalins, rel-(17S,20R,22R)-5 beta,6 beta:18,20-diepoxy-4 beta-hydroxy-1,18-dioxowitha-2,24-dienolide(withaphysalin M) (1), rel-(17S,20R,22R)-5 beta,6 beta:18,20-diepoxy-4 beta-hydroxy-18-ethoxy-1-oxowitha-2,24-dienolide (withaphysalin F ethyl ether, withaphysalin O) (2), and rel-(17S,20R,22R)-5 beta,6 beta:18,20-diepoxy-4 beta-hydroxy-1,18-dioxowitha-24-enolide (withaphysalin N) (3), were isolated from the leaves of Acnistus arborescens. The structures were deduced from 1D ((1)H NMR, (13)C NMR, DEPT-(13)C NMR) and 2D (COSY, HMQC, HMBC) NMR analysis and the relative stereochemical assignments based on 1D NOESY correlations and analysis of coupling constants. Compounds 1 and 2 displayed potent cytotoxic activity against a panel of human cancer cell lines.
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Affiliation(s)
- Maria Leopoldina Veras
- Curso de Pós-Graduação em Química Orgânica, Departamento de Química Orgânica e Inorgânica, Centro de Ciências, Universidade Federal do Ceará, 12.200, Fortaleza, CE, 60021-970, Brazil
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37
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Rivero-Cruz JF, Chai HB, Kardono LBS, Setyowati FM, Afriatini JJ, Riswan S, Farnsworth NR, Cordell GA, Pezzuto JM, Swanson SM, Kinghorn AD. Cytotoxic constituents of the twigs and leaves of Aglaia rubiginosa. J Nat Prod 2004; 67:343-7. [PMID: 15043407 DOI: 10.1021/np0304417] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Activity-guided fractionation of a CHCl(3)-soluble extract of the twigs of Aglaia rubiginosa, using human oral epidermoid carcinoma (KB) cells as a monitor, led to the isolation of a new naturally occurring cyclopenta[b]benzofuran, 1-O-acetylrocaglaol (1), along with seven known compounds, methyl rocaglate (2), rocagloic acid (3), 1-O-acetylmethyl rocaglate (4), desyclamide, eryodictiol, 5-hydroxy-3,7,4'-trimethoxyflavone, and naringenin. A CHCl(3) extract of the leaves of A. rubiginosa yielded the new compound (3S,4R,22R)-cholest-7,24-diene-3,4,22-triol (5), as well as 11 known compounds, including 2 and 4 and cabraleone, dammarelonic acid, (20S,23E)-20,25-dihydroxy-3,4-secodammara-4(28),23-dienoic acid, (20S,23E)-20,25-dihydroxy-3,4-secodammara-4(28),23-dienoic acid methyl ester, (3beta,4beta,22R)-ergosta-5,24(24')-diene-3,4,22-triol, ocotillone, shoreic acid, beta-sitosterol, and beta-sitosterol glycoside. The structures of 1 and 5 were elucidated by spectral and chemical methods. Isolates were evaluated with a human cancer cell panel, and compounds 1-4 were found to exhibit potent cytotoxic activity.
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Affiliation(s)
- J Fausto Rivero-Cruz
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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38
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Diaz F, Chai HB, Mi Q, Su BN, Vigo JS, Graham JG, Cabieses F, Farnsworth NR, Cordell GA, Pezzuto JM, Swanson SM, Kinghorn AD. Anthrone and oxanthrone C-glycosides from Picramnia latifolia collected in Peru. J Nat Prod 2004; 67:352-356. [PMID: 15043409 DOI: 10.1021/np030479j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cytotoxicity-based, bioassay-guided fractionation of the chloroform-soluble extracts of both the roots and leaves of Picramnia latifolia led to the isolation of two new anthrone C-glycosides, picramniosides G (1) and H (2), two new oxanthrone C-glycosides, mayosides D (3) and E (4), and a new benzanthrone natural product, 6,8-dihydroxy-10-methyl-7H-benz[de]anthracen-7-one (5), together with 10 known compounds, 6,8-dihydroxy-4-methyl-7H-benz[de]anthracen-7-one (6), nataloe-emodin (7), chrysophanein, chrysophanol, 1,5-dihydroxy-7-methoxy-3-methylanthraquinone, pulmatin, 7-hydroxycoumarin, 7-hydroxy-6-methoxycoumarin, beta-sitosterol, and beta-sitosterol glucoside. The structures of 1-5 were established by spectroscopic methods, including 1D and 2D NMR, HRMS, and CD data interpretation. The cytotoxic activity of all isolates was evaluated in a small panel of human cancer cell lines. Compound 7 exhibited significant in vitro cytotoxic activity in the tested cell lines, but no significant activity was observed with an in vivo hollow fiber model at doses of 6.25, 12.5, 25, and 50 mg/kg/injection.
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Affiliation(s)
- Fredyc Diaz
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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39
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Ito A, Chai HB, Kardono LBS, Setowati FM, Afriastini JJ, Riswan S, Farnsworth NR, Cordell GA, Pezzuto JM, Swanson SM, Kinghorn AD. Saponins from the bark of Nephelium maingayi. J Nat Prod 2004; 67:201-5. [PMID: 14987059 DOI: 10.1021/np030389e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Activity-guided fractionation of the bark of Nephelium maingayi, collected in Indonesia, led to the isolation of six new saponins (1-6). The aglycon of 4 was determined to be a new compound, 7alpha-methoxyerythrodiol, and those of 1-3 and of 5 and 6 were identified as erythrodiol and maniladiol (16beta-hydroxyamyrin), respectively. The structures of 1-6 were determined on the basis of spectral data interpretation, and the absolute configurations of their component monosaccharides were determined as their thiazolidine derivatives after acid hydrolysis. Of the isolates, only compounds 1 and 5 showed very weak cytotoxic activity against a panel of human tumor cell lines.
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Affiliation(s)
- Aiko Ito
- Program for Collaborative Research in the Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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40
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Abstract
Four coumarin derivatives, theraphins A (1), B (2), C (3), and D (4), along with three known xanthones, 2-hydroxyxanthone, 1,7-dihydroxyxanthone, and 5-hydroxy-1-methoxyxanthone, were isolated from the bark of Kayea assamica (Clusiaceae) native to Myanmar. Their structures were determined using spectroscopic and chemical techniques. The absolute configuration of 1 was established by the modified Mosher ester method. Theraphins A (1), B (2), and C (3) exhibited good cytotoxicity against Col2, KB, and LNCaP human cancer cell lines. Theraphin D (4) showed mild activity only against the KB cell line. The coumarins also exhibited mild antimalarial activities.
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Affiliation(s)
- Kyung-Hee Lee
- Program for Collaborative Research in the Pharmaceutical Sciences, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
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41
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Díaz F, Chávez D, Lee D, Mi Q, Chai HB, Tan GT, Kardono LBS, Riswan S, Fairchild CR, Wild R, Farnsworth NR, Cordell GA, Pezzuto JM, Kinghorn AD. Cytotoxic flavone analogues of vitexicarpin, a constituent of the leaves of Vitex negundo. J Nat Prod 2003; 66:865-867. [PMID: 12828478 DOI: 10.1021/np0300784] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Bioassay-guided fractionation of the chloroform-soluble extract of the leaves of Vitex negundo led to the isolation of the known flavone vitexicarpin (1), which exhibited broad cytotoxicity in a human cancer cell line panel. In an attempt to increase the cytotoxic potency of 1, a series of acylation reactions was performed on this compound to obtain its methylated (2), acetylated (3), and six new acylated (4-9) derivatives. Compound 9, the previously unreported 5,3'-dihexanoyloxy-3,6,7,4'-tetramethoxyflavone, showed comparative cytotoxic potency to compound 1 and was selected for further evaluation. However, this compound was found to be inactive when evaluated in the in vivo hollow fiber assay with Lu1, KB, and LNCaP cells at the highest dose (40 mg/kg/body weight) tested, and in the in vivo P-388 leukemia model (135 mg/kg), using the ip administration route.
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Affiliation(s)
- Fredyc Díaz
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
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42
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Fang L, Chai HB, Castillo JJ, Soejarto DD, Farnsworth NR, Cordell GA, Pezzuto JM, Kinghorn AD. Cytotoxic constituents of Brachistus stramoniifolius. Phytother Res 2003; 17:520-3. [PMID: 12748990 DOI: 10.1002/ptr.1315] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Phytochemical investigation of Brachistus stramoniifolius (Kunth) Miers (formerly Witheringia stramoniifolia Kunth) (Solanaceae) was initiated following primary biological screening and in view of the absence of prior phytochemical studies conducted on this species. Fractionation of an ethyl acetate extract from the roots of the plant, guided by in vitro cytotoxic activity using cultured KB (human nasopharyngeal carcinoma) cells, led to the isolation of three known compounds of the 13,14-seco-16,24-cyclosteroid type, physalins B (1), F (2) and H (3). Their structures were characterized by comparison of their physical and spectral data to published values, with 1D- and 2D-NMR experiments being performed to assure unambiguous resonance assignments. Biological evaluation of these three compounds against a panel of human and murine cancer cell lines demonstrated their broad cytotoxic activity.
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Affiliation(s)
- Liqiong Fang
- Program for Collaborative Research in the Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA
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43
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Seo EK, Lee D, Shin YG, Chai HB, Navarro HA, Kardono LBS, Rahman I, Cordell GA, Farnsworth NR, Pezzuto JM, Kinghorn AD, Wani MC, Wall ME. Bioactive prenylated flavonoids from the stem bark of Artocarpus kemando. Arch Pharm Res 2003; 26:124-7. [PMID: 12643587 DOI: 10.1007/bf02976656] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Four known prenylated flavonoids, artonins E (1) and O (2), artobiloxanthone (3), and cycloartobiloxanthone (4), were isolated from the stem bark of Artocarpus kemando by bioassay-guided fractionation using the DNA strand-scission and the KB cytotoxicity assays as monitors. Compounds 1 and 3 exhibited strong DNA strand-scission activity, and all four compounds were found to be cytotoxic.
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Affiliation(s)
- Eun-Kyoung Seo
- Chemistry and Life Sciences, Research Triangle Institute, PO Box 12194, Research Triangle Park, North Carolina 27709, USA
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44
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Hwang BY, Chai HB, Kardono LBS, Riswan S, Farnsworth NR, Cordell GA, Pezzuto JM, Kinghorn AD. Cytotoxic triterpenes from the twigs of Celtis philippinensis. Phytochemistry 2003; 62:197-201. [PMID: 12482456 DOI: 10.1016/s0031-9422(02)00520-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two triterpene esters, 3beta-trans-sinapoyloxylup-20(29)-en-28-ol (1) and 3beta-trans-feruloyloxy-16 beta-hydroxylup-20(29)-ene (2), were isolated as cytotoxic constituents from the chloroform-soluble extract of the twigs of Celtis philippinensis, along with five known triterpenes, 3beta-O-(E)-feruloylbetulin (3), 3beta-O-(E)-coumaroylbetulin (4), betulin (5), 20-epibryonolic acid (6), and ursolic acid (7). The structures of 1 and 2 were assigned from their 1D and 2D NMR spectroscopic data. All isolates were evaluated for cytotoxicity against several human cancer cell lines.
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Affiliation(s)
- Bang Yeon Hwang
- Program for Collaborative Research in the Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
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45
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Ito A, Chai HB, Lee D, Kardono LBS, Riswan S, Farnsworth NR, Cordell GA, Pezzuto JM, Kinghorn AD. Ellagic acid derivatives and cytotoxic cucurbitacins from Elaeocarpus mastersii. Phytochemistry 2002; 61:171-174. [PMID: 12169311 DOI: 10.1016/s0031-9422(02)00232-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Bioassay-guided investigation of the bark of Elaeocarpus mastersii using KB (human oral epidermoid carcinoma) cells as a monitor led to the isolation of two cucurbitacins, cucurbitacin D and cucurbitacin F as cytotoxic principles, together with two ellagic acid derivatives, 4'-O-methylellagic acid 3-(2",3"-di-O-acetyl)-alpha-L-rhamnoside (1) and 4,4'-O-dimethylellagic acid 3-(2",3"-di-O-acetyl)-alpha-L-rhamnoside (2). These compounds were evaluated against a panel of human tumor cell lines.
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Affiliation(s)
- Aiko Ito
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
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46
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Chávez D, Cui B, Chai HB, García R, Mejía M, Farnsworth NR, Cordell GA, Pezzuto JM, Kinghorn AD. Reversal of multidrug resistance by tropane alkaloids from the stems of Erythroxylum rotundifolium. J Nat Prod 2002; 65:606-610. [PMID: 11975514 DOI: 10.1021/np0104774] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Six tropane alkaloid esters were isolated from the stems of Erythroxylum rotundifolium. The structures of three new tropane esters, 7beta-hydroxy-6beta-(3,4,5-trimethoxybenzoyloxy)-3alpha-(E)-(3,4,5-trimethoxycinnamoyloxy)tropane (1), 6beta-benzoyloxy-3alpha-(Z)-(3,4,5-trimethoxycinnamoyloxy)tropane (2), and (-)-6beta-benzoyloxy-3alpha-hydroxytropane (3), were established by spectroscopic techniques. When alkaloids 1-6 were evaluated against a panel of human cancer cell lines, the new compound 6beta-benzoyloxy-3alpha-(Z)-(3,4,5-trimethoxycinnamoyloxy)tropane (2) and three known compounds, 6beta-benzoyloxy-3alpha-(3,4,5-trimethoxycinnamoyloxy)tropane (4), 6beta-benzoyloxy-3alpha-(E)-(3,4,5-trimethoxycinnamoyloxy)tropane-7beta-ol (5), and 7beta-acetoxy-6beta-benzoyloxy-3alpha-(E)-(3,4,5-trimethoxycinnamoyloxy)tropane (6), demonstrated greatest activity with multidrug-resistant oral epidermoid carcinoma (KB-V1) cells incubated in the presence of vinblastine. Thus, tropane esters of this type can reverse the multidrug-resistance phenotype, presumably by interacting with P-glycoprotein.
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Affiliation(s)
- Daniel Chávez
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 60612, USA
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47
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Zhang H, Fan Z, Tan GT, Chai HB, Pezzuto JM, Sun H, Fong HHS. Pseudoirroratin A, a new cytotoxic ent-kaurene diterpene from Isodon pseudo-irrorata. J Nat Prod 2002; 65:215-217. [PMID: 11858760 DOI: 10.1021/np010420h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new ent-kaurene diterpene, pseudoirroratin A (1), and a known diterpene, pseurata A, were isolated from Isodon pseudo-irrorata. Compound 1 showed significant cytotoxicity against the Lu1, SW626, LNCaP, KB, and HOS cancer cell lines with IC(50) values of 0.26 (0.75), 0.20 (0.57), 0.90 (2.59), 0.90 (2.59), and 0.50 (1.44) microg/mL (microM), respectively. The structure of 1 was elucidated by spectroscopic means including 1D and 2D NMR techniques.
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MESH Headings
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Carcinoma, Squamous Cell
- Chromatography, High Pressure Liquid
- Diterpenes/chemistry
- Diterpenes/isolation & purification
- Diterpenes/pharmacology
- Drug Screening Assays, Antitumor
- Drugs, Chinese Herbal/chemistry
- Female
- Humans
- Inhibitory Concentration 50
- KB Cells
- Lamiaceae/chemistry
- Lung Neoplasms
- Male
- Molecular Conformation
- Molecular Structure
- Nuclear Magnetic Resonance, Biomolecular
- Osteosarcoma
- Ovarian Neoplasms
- Plants, Medicinal/chemistry
- Prostatic Neoplasms
- Spectrophotometry, Ultraviolet
- Stereoisomerism
- Tumor Cells, Cultured/drug effects
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Affiliation(s)
- Hongjie Zhang
- Program for Collaborative Research in Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, Illinois 60612, USA
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48
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Peraza-Sánchez SR, Chai HB, Shin YG, Santisuk T, Reutrakul V, Farnsworth NR, Cordell GA, Pezzuto JM, Kinghorn AD. Constituents of the leaves and twigs of Ficus hispida. Planta Med 2002; 68:186-188. [PMID: 11859479 DOI: 10.1055/s-2002-20257] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new norisoprenoid, ficustriol (1), and the known phenanthroindolizidine alkaloid O-methyltylophorinidine (2), were isolated from a CHCl3 extract of the leaves and twigs of Ficus hispida. O-Methyltylophorinidine showed potent cytotoxic activity when tested against a small panel of human cancer cells, while ficustriol was inactive. The structure and stereochemistry of 1 were determined using chemical and spectral methods.
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Silva GL, Cui B, Chávez D, You M, Chai HB, Rasoanaivo P, Lynn SM, O'Neill MJ, Lewis JA, Besterman JM, Monks A, Farnsworth NR, Cordell GA, Pezzuto JM, Kinghorn AD. Modulation of the multidrug-resistance phenotype by new tropane alkaloid aromatic esters from Erythroxylum pervillei. J Nat Prod 2001; 64:1514-1520. [PMID: 11754602 DOI: 10.1021/np010295+] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nine tropane alkaloid aromatic esters (1-9) were isolated from the roots of Erythroxylum pervillei by following their potential to reverse multidrug-resistance with vinblastine-resistant oral epidermoid carcinoma (KB-V1) cells. All isolates, including seven new structures (3-9), were evaluated against a panel of human cancer cell lines, and it was found that alkaloids 3 and 5-9 showed the greatest activity with KB-V1 cells assessed in the presence of vinblastine, suggesting that these new compounds are potent modulators of P-glycoprotein. Confirmatory results were obtained with human ovarian adenocarcinoma (SKVLB) cells evaluated in the presence of adriamycin and synergistic studies performed with several cell lines from the NCI tumor panel. The structures of the new compounds were determined using spectroscopic techniques. Single-crystal X-ray analysis was performed on the monoester, tropane-3 alpha,6 beta,7 beta-triol 3-phenylacetate (1).
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/metabolism
- Alkaloids/chemistry
- Alkaloids/isolation & purification
- Alkaloids/pharmacology
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Crystallography, X-Ray
- Doxorubicin/pharmacology
- Drug Resistance, Multiple
- Drug Screening Assays, Antitumor
- Erythroxylaceae/chemistry
- Esters/chemistry
- Esters/isolation & purification
- Esters/pharmacology
- Female
- Humans
- Madagascar
- Medicine, Traditional
- Molecular Conformation
- Molecular Structure
- Nuclear Magnetic Resonance, Biomolecular
- Ovarian Neoplasms
- Plant Roots/chemistry
- Plants, Medicinal/chemistry
- Spectrophotometry, Infrared
- Stereoisomerism
- Tropanes/chemistry
- Tropanes/isolation & purification
- Tropanes/pharmacology
- Tumor Cells, Cultured/drug effects
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Affiliation(s)
- G L Silva
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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Topçu G, Ayral MN, Aydin A, Gören AC, Chai HB, Pezzuto JM. Triterpenoids of the roots of Lavandula stoechas ssp. stoechas. Pharmazie 2001; 56:892-5. [PMID: 11817178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The roots of Lavandula stoechas ssp. stoechas afforded eleven known triterpenes, two steroids and two aromatics, in addition to two new triterpenes, 18-hydroxy-27-norolean-12,14-dien-30-al-28-oic acid and 3 beta-hydroxy-1-oxo-olean-12-ene-30-al-28-oic acid. Their structures were determined by spectroscopic analyses. The chloroform extract and some isolated compounds were evaluated for their growth inhibitory activity against several mammalian cell lines.
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Affiliation(s)
- G Topçu
- Faculty of Pharmacy, University of Istanbul.
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