51
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Synthesis, cytotoxic activity and structure–activity relationships of hedychenone analogues. Bioorg Med Chem Lett 2010; 20:2525-8. [DOI: 10.1016/j.bmcl.2010.02.101] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 02/04/2010] [Accepted: 02/26/2010] [Indexed: 11/19/2022]
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52
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Kumrit I, Suksamrarn A, Meepawpan P, Songsri S, Nuntawong N. Labdane-type diterpenes from Hedychium gardnerianum
with potent cytotoxicity against human small cell lung cancer cells. Phytother Res 2009; 24:1009-13. [DOI: 10.1002/ptr.3057] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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53
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Prabhakar Reddy P, Ranga Rao R, Shashidhar J, Sastry B, Madhusudana Rao J, Suresh Babu K. Phytochemical investigation of labdane diterpenes from the rhizomes of Hedychium spicatum and their cytotoxic activity. Bioorg Med Chem Lett 2009; 19:6078-81. [DOI: 10.1016/j.bmcl.2009.09.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Revised: 09/07/2009] [Accepted: 09/10/2009] [Indexed: 10/20/2022]
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54
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Villamizar J, Pittelaud JP, Rodrigues JR, Gamboa N, Canudas N, Tropper E, Salazar F, Fuentes J. Synthesis and antimalarial activities of optically active labdane-type diterpenes. Nat Prod Res 2009; 23:891-902. [DOI: 10.1080/14786410802164048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- José Villamizar
- a Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC) , Apartado 21827, Caracas 1020-A, Venezuela
| | - Jean P. Pittelaud
- b Departamento de Química , Universidad Simón Bolívar , Caracas, Venezuela
| | - Juan R. Rodrigues
- c Facultad de Farmacia , Universidad Central de Venezuela , Caracas, Venezuela
| | - Neira Gamboa
- c Facultad de Farmacia , Universidad Central de Venezuela , Caracas, Venezuela
| | - Nieves Canudas
- b Departamento de Química , Universidad Simón Bolívar , Caracas, Venezuela
| | - Eleonora Tropper
- a Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC) , Apartado 21827, Caracas 1020-A, Venezuela
| | - Franklin Salazar
- a Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC) , Apartado 21827, Caracas 1020-A, Venezuela
| | - Juan Fuentes
- b Departamento de Química , Universidad Simón Bolívar , Caracas, Venezuela
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Maulidiani, Shaari K, Paetz C, Stanslas J, Abas F, Lajis NH. Naturally Occurring Labdane Diterpene and Benzofuran from Globba pendula. Nat Prod Commun 2009. [DOI: 10.1177/1934578x0900400803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Phytochemical investigation on Globba pendula resulted in the isolation of a new naturally occurring 16-oxo-(8)17-12-labdadien-15,11-olide 1 and benzofuran-2-carboxaldehyde 2. Other known compounds including isoandrographolide, indirubin, vanillin, vanillic acid, 2(3H)-benzoxazolone, as well as β-sitosteryl-β-D-glucopyranoside, β-sitosterol, and 7α-hydroxysitosterol were also isolated. The structures were established based on spectroscopic data and comparison with the literature. Furthermore, the compound isoandrographolide has demonstrated strong cytotoxic properties towards a panel of cancer cell lines (MCF-7, PC-3, and H-460) with the IC50 values of 7.9, 8.7, and 9.0 μM, respectively.
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Affiliation(s)
- Maulidiani
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Khozirah Shaari
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Christian Paetz
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, Shido, Sanuki-shi, Kagawa 769-2193, Japan
| | - Johnson Stanslas
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Faridah Abas
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Nordin Haji Lajis
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
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56
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Nakamura S, Okazaki Y, Ninomiya K, Morikawa T, Matsuda H, Yoshikawa M. Medicinal flowers. XXIV. Chemical structures and hepatoprotective effects of constituents from flowers of Hedychium coronarium. Chem Pharm Bull (Tokyo) 2009; 56:1704-9. [PMID: 19043243 DOI: 10.1248/cpb.56.1704] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The 80% aqueous acetone extract from the flowers of Hedychium coronarium was found to show a protective effect on D-galactosamine-induced cytotoxicity in primary cultured mouse hepatocytes. On the other hand, two new labdane-type diterpene glycosides, coronalactosides I (1) and II (2), and a new labdane-type trinorditerpene, coronadiene (3), were isolated together with 8 known compounds from the extracts, which were obtained with chloroform and 80% aqueous acetone from the flowers of H. coronarium. The structures of new constituents were elucidated on the basis of chemical and physicochemical evidence. In addition, the principal constituents, coronaririn C and 15-hydroxylabda-8(17),11,13-trien-16,15-olide, displayed hepatoprotective effects, which were stronger than that of the hepatoprotective agent, silybin.
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57
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Hagiwara H, Nozawa M. Highly Oxygenated Diterpenoids Associated to the Central Nervous System: Syntheses of Salvinorin and Forskolin. J SYN ORG CHEM JPN 2009. [DOI: 10.5059/yukigoseikyokaishi.67.1115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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58
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Kunnumakkara AB, Ichikawa H, Anand P, Mohankumar CJ, Hema PS, Nair MS, Aggarwal BB. Coronarin D, a labdane diterpene, inhibits both constitutive and inducible nuclear factor-kappa B pathway activation, leading to potentiation of apoptosis, inhibition of invasion, and suppression of osteoclastogenesis. Mol Cancer Ther 2008; 7:3306-17. [PMID: 18852134 DOI: 10.1158/1535-7163.mct-08-0432] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Compounds isolated from members of the Zingiberaceae family are traditionally used as a medicine against inflammatory diseases, but little is known about the mechanism. Here, we report the isolation and structural identification of coronarin D [E-labda-8(17),12-diene-15-ol], a labdane-type diterpene, from Hedychium coronarium and delineate its mechanism of action. Because the transcription factor nuclear factor-kappaB (NF-kappaB) is a key mediator of inflammation, apoptosis, invasion, and osteoclastogenesis, we investigated the effect of coronarin D on NF-kappaB activation pathway, NF-kappaB-regulated gene products, and NF-kappaB-regulated cellular responses. The coronarin D inhibited NF-kappaB activation induced by different inflammatory stimuli and carcinogens. This labdane also suppressed constitutive NF-kappaB activity in different cell lines and inhibited IkappaBalpha kinase activation, thus leading to the suppression of IkappaBalpha phosphorylation, degradation, p65 nuclear translocation, and reporter gene transcription. Coronarin D also inhibited the NF-kappaB-regulated gene products involved in cell survival (inhibitor of apoptosis protein 1, Bcl-2, survivin, and tumor necrosis factor receptor-associated factor-2), proliferation (c-myc, cyclin D1, and cyclooxygenase-2), invasion (matrix metalloproteinase-9), and angiogenesis (vascular endothelial growth factor). Suppression of these gene products by the diterpene enhanced apoptosis induced by TNF and chemotherapeutic agents, suppressed TNF-induced cellular invasion, and abrogated receptor activator of NF-kappaB ligand-induced osteoclastogenesis. Coronarin D was found to be more potent than its analogue coronarin D acid. Overall, our results show that coronarin D inhibited NF-kappaB activation pathway, which leads to inhibition of inflammation, invasion, and osteoclastogenesis, as well as potentiation of apoptosis.
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Affiliation(s)
- Ajaikumar B Kunnumakkara
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas M. D. Anderson Cancer Center, Unit 143, 1515 Holcombe Boulevard, Houston, TX 77030, USA
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59
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Miyake T, Uda K, Kinoshita M, Fujii M, Akita H. Concise Syntheses of Coronarin A, Coronarin E, Austrochaparol and Pacovatinin A. Chem Pharm Bull (Tokyo) 2008; 56:398-403. [DOI: 10.1248/cpb.56.398] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takahiro Miyake
- Faculty of Pharmaceutical Sciences, Toho University
- Tsukuba Research Institute, Novartis Pharma Co., Ltd
| | - Keisuke Uda
- Faculty of Pharmaceutical Sciences, Toho University
| | | | - Mikio Fujii
- Faculty of Pharmaceutical Sciences, Toho University
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61
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Akiyama K, Kikuzaki H, Aoki T, Okuda A, Lajis NH, Nakatani N. Terpenoids and a diarylheptanoid from Zingiber ottensii. JOURNAL OF NATURAL PRODUCTS 2006; 69:1637-40. [PMID: 17125238 DOI: 10.1021/np0603119] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Four new terpenoids and a diarylheptanoid were isolated together with 16 known compounds from rhizomes of Zingiber ottensii. The structures of the new compounds were determined to be 1,10,10-trimethylbicyclo[7,4,0]tridecane-3,6-dione (1), (E)-14-hydroxy-15-norlabda-8(17),12-dien-16-al (2), (E)-labda-8(17),12,14-trien-15(16)-olide (3), (E)-14,15,16-trinorlabda-8(17),11-dien-13-oic acid (4), and rel-(3R,5S)-3,5-dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-7-(3, 4-dihydroxyphenyl)heptane (5) by spectroscopic evidence.
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Affiliation(s)
- Kayo Akiyama
- Graduate School of Human Life Science, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi, Osaka, Japan
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62
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Xu HX, Hui D, Sim KY. The Isolation of A New Labdane Diterpene from the Seeds of Alpinia zerumbet. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10575639508043183] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Hong-Xi Xu
- a Department of Chemistry , National University of Singapore , 10 Kent Ridge Crescent, Singapore , 0511
| | - Dong Hui
- b Department of Pharmacognosy , China Pharmaceutical University , Nanjing, 210038, P. R. China
| | - Keng-Yeow Sim
- a Department of Chemistry , National University of Singapore , 10 Kent Ridge Crescent, Singapore , 0511
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63
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Aslaoui J, Li H, Morin C. Synthesis of hedychenone, yunnancoronarins and aframodial derivatives. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.01.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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64
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Mohamad H, Lajis NH, Abas F, Ali AM, Sukari MA, Kikuzaki H, Nakatani N. Antioxidative constituents of Etlingera elatior. JOURNAL OF NATURAL PRODUCTS 2005; 68:285-288. [PMID: 15730265 DOI: 10.1021/np040098l] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Phytochemical studies on the rhizomes of Etlingera elatior have resulted in the isolation of 1,7-bis(4-hydroxyphenyl)-2,4,6-heptatrienone (1), demethoxycurcumin (2), 1,7-bis(4-hydroxyphenyl)-1,4,6-heptatrien-3-one (3), 16-hydroxylabda-8(17),11,13-trien-15,16-olide (4), stigmast-4-en-3-one, stigmast-4-ene-3,6-dione, stigmast-4-en-6beta-ol-3-one, and 5alpha,8alpha-epidioxyergosta-6,22-dien-3beta-ol. Compounds 1 and 4 are new, and their structures were elucidated by analysis of spectroscopic data. Diarylheptanoids 1-3 were found to inhibit lipid peroxidation in a more potent manner than alpha-tocopherol.
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Affiliation(s)
- Habsah Mohamad
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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65
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Sakai K, Fukuda Y, Matsunaga S, Tanaka R, Yamori T. New cytotoxic oleanane-type triterpenoids from the cones of Liquidamber styraciflua. JOURNAL OF NATURAL PRODUCTS 2004; 67:1088-1093. [PMID: 15270558 DOI: 10.1021/np0305369] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two new oleanane-type triterpenoids (1 and 2), together with two known compounds, 6beta-hydroxy-3-oxo-lup-20(29)-en-28-oic acid (3) and 3,11-dioxoolean-12-en-28-oic acid (4), were isolated from the stem bark of Liquidamber styraciflua. The structures of 1 and 2 were determined to be 25-acetoxy-3alpha-hydroxyolean-12-en-28-oic acid (1) and 3alpha,25-dihydroxyolean-12-en-28-oic acid (2) on the basis of spectroscopic methods and chemical conversion. Compound 1 showed strong cytotoxicity against a disease-oriented panel of 39 human cancer cell lines, although compounds 2, 3, and 4 showed weaker activity compared to 1.
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Affiliation(s)
- Kuniyoshi Sakai
- Department of Medicinal Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
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67
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Villamizar J, Fuentes J, Salazar F, Tropper E, Alonso R. Facile access to optically active labdane-type diterpenes from (+)-manool. Synthesis of (+)-coronarin E, (+)-15,16-epoxy-8(17),13(16),14-labdatriene, and (+)-labda-8(17),13(Z)-diene-15,16-diol. JOURNAL OF NATURAL PRODUCTS 2003; 66:1623-1627. [PMID: 14695810 DOI: 10.1021/np030166o] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
An efficient method for the synthesis of (+)-coronarin E (1), (+)-15,16-epoxy-8(17),13(16),14-labdatriene (2), and (+)-labda-8(17),13(Z)-diene-15,16-diol (3) from (+)-manool is described.
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Affiliation(s)
- José Villamizar
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Apartado 21827, Caracas, 1020-A, Venezuela.
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68
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Muhammad I, Dunbar DC, Khan SI, Tekwani BL, Bedir E, Takamatsu S, Ferreira D, Walker LA. Antiparasitic alkaloids from Psychotria klugii. JOURNAL OF NATURAL PRODUCTS 2003; 66:962-967. [PMID: 12880315 DOI: 10.1021/np030086k] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Psychotria klugii yielded two new benzoquinolizidine alkaloids, klugine (1) and 7'-O-demethylisocephaeline (2), together with the previously known cephaeline (3), isocephaeline (4), and 7-O-methylipecoside (5). The structures and stereochemistry of 1 and 2 were determined by 1D and 2D NMR data and circular dichroism experiments. Cephaeline (3) demonstrated potent in vitro antileishmanial activity against Leishmania donavani (IC(50) 0.03 microg/mL) and was >20- and >5-fold more potent than pentamidine and amphotericin B, respectively, while klugine (1) (IC(50) 0.40 microg/mL) and isocephaeline (4) (IC(50) 0.45 microg/mL) were <13- and <15-fold less potent than 3. In addition, emetine (6) (IC(50) 0.03 microg/mL) was found to be as equally potent as 3, but was >12-fold more toxic than 3 against VERO cells (IC(50) 0.42 vs 5.3 microg/mL). Alkaloids 1 and 3 exhibited potent antimalarial activity against Plasmodium falciparum clones W2 and D6 (IC(50) 27.7-46.3 ng/mL). Compound 3 was cytotoxic to SK-MEL, KB, BT-549, and SK-OV-3 human cancer cells, while 1 was inactive.
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Affiliation(s)
- Ilias Muhammad
- National Center for Natural Products Research and Department of Pharmacology, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, Mississippi 38677, USA.
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69
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Oh S, Jeong IH, Shin WS, Lee S. A study on the synthesis of antiangiogenic (+)-coronarin A and congeners from (+)-sclareolide. Bioorg Med Chem Lett 2003; 13:2009-12. [PMID: 12781184 DOI: 10.1016/s0960-894x(03)00345-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Coronarin A 1, epi-coronarin A 2 and some synthetic intermediates 14a and 14b synthesized from sclareolide exhibit good growth inhibition activities on HUVEC proliferation. In particular, coronarin A 1 and epi-coronarin A 2 effectively suppressed the growth factor induced tube formation of HUVEC at the concentration of 10 micro g/mL.
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Affiliation(s)
- Sangtae Oh
- Department of Chemistry, Yonsei University, Wonju 220-710, South Korea
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70
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Matsuda H, Morikawa T, Sakamoto Y, Toguchida I, Yoshikawa M. Labdane-type diterpenes with inhibitory effects on increase in vascular permeability and nitric oxide production from Hedychium coronarium. Bioorg Med Chem 2002; 10:2527-34. [PMID: 12057641 DOI: 10.1016/s0968-0896(02)00121-9] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The methanolic extract from the rhizome of Hedychium coronarium was found to inhibit the increase in vascular permeability induced by acetic acid in mice and nitric oxide production in lipopolysaccharide-activated mouse peritoneal macrophages. From the methanolic extract, three new labdane-type diterpenes, hedychilactones A, B, and C, were isolated together with six known diterpenes. The structures of hedychilactones were elucidated on the basis of chemical and physicochemical evidence. The diterpene constituents showed inhibitory effects on the increase in vascular permeability, nitric oxide production, and inducible nitric oxide synthase induction.
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Affiliation(s)
- Hisashi Matsuda
- Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan
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71
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Yoshikawa M, Matsuda H, Morikawa T, Sakamoto Y, Toguchida I. Antiinflammatory Principles and Three New Labdane-Type Diterpenes, Hedychilactones A, B, and C, from the Rhizome of Hedychium coronarium Koeng. HETEROCYCLES 2002. [DOI: 10.3987/com-01-s(k)10] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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72
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Wu TS, Shi LS, Kuo SC. Cytotoxicity of Ganoderma lucidum triterpenes. JOURNAL OF NATURAL PRODUCTS 2001; 64:1121-1122. [PMID: 11520245 DOI: 10.1021/np010115w] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two new triterpenoids, lucidenic acid N (1) and methyl lucidenate F (2), together with four known compounds, lucidenic acid A, lucidenolactone, lucidenic acid C, and ganoderic acid E, were isolated from the dried fruiting bodies of Ganoderma lucidum. Their structures were elucidated by spectral and chemical transformation studies. Among them, lucidenic acid N (1), lucidenic acid A, and ganoderic acid E showed significant cytotoxic activity against Hep G2, Hep G2,2,15, and P-388 tumor cells.
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Affiliation(s)
- T S Wu
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China.
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73
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Labdane-type diterpenes: Chemistry and biological activity. BIOACTIVE NATURAL PRODUCTS (PART F) 2001. [DOI: 10.1016/s1572-5995(01)80009-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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74
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de Medeiros JM, Macedo M, Contancia JP, Nguyen C, Cunningham G, Miles DH. Antithrombin activity of medicinal plants of the Azores. JOURNAL OF ETHNOPHARMACOLOGY 2000; 72:157-165. [PMID: 10967467 DOI: 10.1016/s0378-8741(00)00226-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A chromogenic bioassay was utilized to determine the antithrombin activity of methylene chloride and methanol extracts prepared from 50 plants of Azores. Extracts of the six plants Hedychium gardneranum, Tropaeolum majus, Gunnera tinctoria, Hedera helix, Festuca jubata and Laurus azorica demonstrated activity of 78% or higher in this bioassay system.
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Affiliation(s)
- J M de Medeiros
- Instituto de Inovacao Tecnologica Dos Azores, Azores, Portugal
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75
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Anti Tumor Compounds Isolated from Higher Plants. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1572-5995(00)80048-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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76
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Phytochemistry of the zingiberaceae. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1572-5995(00)80142-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
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77
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Jung M, Ko I, Lee S, Choi SJ, Youn BH, Kim SK. A concise synthesis and in vitro cytotoxicity of new labdane diterpenes. Bioorg Med Chem Lett 1998; 8:3295-8. [PMID: 9873721 DOI: 10.1016/s0960-894x(98)00603-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new series of labdane-related diterpenes have been synthesized from (-)-sclareol and assayed in vitro cytotoxicity against mouse and human cancer cells. A key intermediate, homodrimane and furanolabdane derivatives show good in vitro cytotoxicity comparable to those of mitomycin C and adriamycin.
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Affiliation(s)
- M Jung
- Department of Chemistry, Yonsei University, Seoul, Korea
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78
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79
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Wu TS, Liou MJ, Kuoh CS, Teng CM, Nagao T, Lee KH. Cytotoxic and antiplatelet aggregation principles from Aglaia elliptifolia. JOURNAL OF NATURAL PRODUCTS 1997; 60:606-8. [PMID: 9214732 DOI: 10.1021/np970163+] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Two related 1H-2,3,3a,8b-tetrahydrocyclopenta[b]benzofurans, aglafolin (1a) and rocaglamide (2), isolated from the stems of Aglaia elliptifolia, showed significant cytotoxicity in six cancer cell lines. Aglafolin (1a) was also found to completely block platelet aggregation caused by arachidonic acid and platelet-activating factor at 100 microM and 2 ng/mL, respectively.
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Affiliation(s)
- T S Wu
- Department of Chemistry, National Cheng-Kung University, Tainan, Taiwan, Republic of China
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Wang HK, Bastow KF, Cosentino LM, Lee KH. Antitumor agents. 166. Synthesis and biological evaluation of 5,6,7,8-substituted-2-phenylthiochromen-4-ones. J Med Chem 1996; 39:1975-80. [PMID: 8642556 DOI: 10.1021/jm960008c] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
As a continuation of our structure--activity relationship study of substituted 2-phenyl-4-quinolones and flavonoids as antitumor and antiviral agents, a series of 5,6,7,8-substituted-2-phenylthiochromen-4-ones has been synthesized by condensation of substituted thiophenols and ethyl benzoylacetates. Target compounds were evaluated for biological activity. Among them, compounds 7, 10, 12, and 13 displayed significant growth inhibitory action against a panel of tumor cell lines including human ileocecal carcinoma (HCT-8), murine leukemia (P-388), human melanoma (RPMI), and human central nervous system tumor (TE671) cells. Compounds 10, 12, and 19 displayed DNA topoisomerase I inhibitory activity in vitro and compound 11 was an in vitro, inhibitor of DNA topoisomerase II. Compound 11 was most active (ED50 value, 0.65 microM) against HIV in acutely infected H9 lymphocytes and had a therapeutic index of about 5.
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Affiliation(s)
- H K Wang
- Division of Medicinal Chemistry and Natural Products, School of Pharmacy, University of North Carolina, Chapel Hill 27599, USA
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Singh S, Gray AI, Waterman PG. 14,15,16-Trinorlabda-8(17),11-(E)-dien-13-al: A Trinorlabdane Diterpene from the Rhizome ofHedychium coronarium. ACTA ACUST UNITED AC 1993. [DOI: 10.1080/10575639308043856] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lechat-Vahirua I, François P, Menut C, Lamaty G, Bessiere JM. Aromatic Plants of French Polynesia. I. Constituents of the Essential Oils of Rhizomes of Three Zingiberaceae:Zingiber zerumbetSmith,Hedychium coronariumKoenig andEtlingera cevugaSmith. JOURNAL OF ESSENTIAL OIL RESEARCH 1993. [DOI: 10.1080/10412905.1993.9698170] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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