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Yokosuka A, Yamada C, Saito M, Yokogawa S, Mimaki Y. Chemical Constituents of the Leaves of Thujopsis dolabrata and Their Cytotoxicity. Chem Pharm Bull (Tokyo) 2022; 70:720-725. [PMID: 36184455 DOI: 10.1248/cpb.c22-00286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Five podophyllotoxin derivatives (1-5), two diterpenoids (6 and 7), three diterpenoid xylosides (8-10), a flavanonol glycoside (11), flavonol (12), and biflavonoid (13) were isolated from the leaves of Thujopsis dolabrata (Cupressaceae). Compounds 1, 6, and 8 were named (-)-β-isopeltatin, epi-nootkastatin 2, and acetoxyanticopalol 15-O-β-D-xylopyranoside, respectively. The structures of the isolated compounds were determined based on a detailed analysis of NMR spectroscopic data and through chromatographic and spectroscopic analyses following specific chemical transformations. The isolated compounds (1-5 and 7-11) were evaluated for their cytotoxicity toward HL-60 human promyelocytic leukemia cells and Caki-1 human kidney carcinoma cells. The podophyllotoxin derivatives (1-5) exhibited cytotoxicity against both HL-60 and Caki-1 cells with IC50 values ranging from 0.00069 to 5.4 µM, and the diterpenoid derivatives (7-10) demonstrated cytotoxicity against HL-60 cells with IC50 values ranging from 4.5 to 11 µM. HL-60 cells treated with 8 exhibited apoptosis characteristics, such as accumulation of sub-G1 cells and nuclear chromatin condensation.
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Affiliation(s)
- Akihito Yokosuka
- Department of Medicinal Pharmacognosy, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| | - Chiaki Yamada
- Department of Medicinal Pharmacognosy, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| | - Makoto Saito
- Department of Medicinal Pharmacognosy, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| | - Shohei Yokogawa
- Department of Medicinal Pharmacognosy, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| | - Yoshihiro Mimaki
- Department of Medicinal Pharmacognosy, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
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Laamari Y, Ait Itto MY, Riahi A, Chevreux S, Auhmani A, Ketatni EM. Crystal structure of (4b S,8a R)-1-isopropyl-4b,8,8-trimethyl-7-oxo-4b,7,8,8a,9,10-hexa-hydro-phenanthren-2-yl acetate. Acta Crystallogr E Crystallogr Commun 2018; 74:728-730. [PMID: 29850101 PMCID: PMC5947497 DOI: 10.1107/s2056989018005510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 04/09/2018] [Indexed: 11/29/2022]
Abstract
The title compound, C22H28O3, was prepared by a direct acetyl-ation reaction of naturally occurring totarolenone. The mol-ecule contains three fused rings, which exhibit different conformations. The central ring has a half-chair conformation, while the non-aromatic oxo-substituted ring has a screw-boat conformation. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds and C-H⋯π inter-actions, forming sheets parallel to the bc plane. The carbonyl O atoms and the C atom at the 6-position of the cyclo-hexene ring are each disordered over two sets of sites with major occupancy components of 0.63 (7) and 0.793 (14), respectively.
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Affiliation(s)
- Yassine Laamari
- Laboratory of Organic Synthesis and Physico-Molecular Chemistry, Department of Chemistry, Faculty of Sciences Semlalia, BP 2390, Marrakech 40001, Morocco
| | - Moulay Youssef Ait Itto
- Laboratory of Organic Synthesis and Physico-Molecular Chemistry, Department of Chemistry, Faculty of Sciences Semlalia, BP 2390, Marrakech 40001, Morocco
| | - Abdelkhalek Riahi
- Institute of Molecular Chemistry of Reims, CNRS UMR 7312 Bat. Europol’Agro, Moulin of the Housse UFR Sciences, BP 1039-51687 Reims Cedex 2, France
| | - Sylviane Chevreux
- Institute of Molecular Chemistry of Reims, CNRS UMR 7312 Bat. Europol’Agro, Moulin of the Housse UFR Sciences, BP 1039-51687 Reims Cedex 2, France
| | - Aziz Auhmani
- Laboratory of Organic Synthesis and Physico-Molecular Chemistry, Department of Chemistry, Faculty of Sciences Semlalia, BP 2390, Marrakech 40001, Morocco
| | - El Mostafa Ketatni
- Laboratory of Applied Spectro-Chemistry and Environment, University Sultan Moulay Slimane, Faculty of Science and Technology, PO Box 523, Beni-Mellal, Morocco
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Yellow-Cedar, Callitropsis (Chamaecyparis) nootkatensis, Secondary Metabolites, Biological Activities, and Chemical Ecology. J Chem Ecol 2018; 44:510-524. [PMID: 29654493 DOI: 10.1007/s10886-018-0956-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/26/2018] [Accepted: 03/28/2018] [Indexed: 10/17/2022]
Abstract
Yellow-cedar, Callitropsis nootkatensis, is prevalent in coastal forests of southeast Alaska, western Canada, and inland forests along the Cascades to northern California, USA. These trees have few microbial or animal pests, attributable in part to the distinct groups of biologically active secondary metabolites their tissues store for chemical defense. Here we summarize the new yellow-cedar compounds identified and their biological activities, plus new or expanded activities for tissues, extracts, essential oils and previously known compounds since the last review more than 40 years ago. Monoterpene hydrocarbons are the most abundant compounds in foliage, while heartwood contains substantial quantities of oxygenated monoterpenes and oxygenated sesquiterpenes, with one or more tropolones. Diterpenes occur in foliage and bark, whereas condensed tannins have been isolated from inner bark. Biological activities expressed by one or more compounds in these groups include fungicide, bactericide, sporicide, acaricide, insecticide, general cytotoxicity, antioxidant and human anticancer. The diversity of organisms impacted by whole tissues, essential oils, extracts, or individual compounds now encompasses ticks, fleas, termites, ants, mosquitoes, bacteria, a water mold, fungi and browsing animals. Nootkatone, is a heartwood component with sufficient activity against arthropods to warrant research focused toward potential development as a commercial repellent and biopesticide for ticks, mosquitoes and possibly other arthropods that vector human and animal pathogens.
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Cytotoxic Terpenoids from the Roots of Dracocephalum taliense. Molecules 2017; 23:molecules23010057. [PMID: 29280951 PMCID: PMC6017833 DOI: 10.3390/molecules23010057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 12/12/2017] [Accepted: 12/14/2017] [Indexed: 01/08/2023] Open
Abstract
A chemical investigation of methanol extract from the roots of Dracocephalum taliense led to the isolation of a new aromatic abietane diterpenoid, 12-methoxy-18-hydroxy-sugiol (1), and one highly-oxygenated ursane triterpenoid, 2α,3α-dihydroxy-11α,12α-epoxy-urs-28,13β-olide (2), together with 15 known natural products (3–17). Among these, compounds 1–13 and 15–17 were detected for the first time in the genus of Dracocephalum. The structures of all of these isolates were determined by extensively spectroscopic analyses. In the anti-inflammatory assay, compounds 1 and 2 had no obvious inhibitory activity on the release of cytokine IL-2 in lipopolysaccharide-induced RAW 264.7 macrophages. However, compound 2 exhibited significant cytotoxic activity against cell lines HepG2 (IC50 = 6.58 ± 0.14 μM) and NCI-H1975 (IC50 = 7.17 ± 0.26 μM).
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Liu CX, Lin ZX, Zhou AM. Design, synthesis, cytotoxicities and DNA cleavage activities of dibenzoxepine and isoquinoline derivatives starting from dehydroabietylamine. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2016; 18:1169-1177. [PMID: 27696913 DOI: 10.1080/10286020.2016.1232251] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 08/26/2016] [Indexed: 06/06/2023]
Abstract
A series of novel hexahydrodibenzoxepine and quinazoline derivatives were designed and synthesized starting from dehydroabietylamine. The cytotoxicities of the compounds against L02 and HepG2 cell lines were investigated. Meanwhile, the plasmid DNA (Escherichia coli) cleavage of several heterocyclic derivatives was studied. These compounds exhibit remarkable activities on plasmid DNA pBR322. Our study provides useful information for developing new and more potent antitumor agents.
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Affiliation(s)
- Chao-Xiang Liu
- a Department of Pharmacy , Bozhou Vocational and Technical College , Bozhou 236800 , China
| | - Zhong-Xiang Lin
- b College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , China
| | - Ai-Min Zhou
- c Department of Chemistry , Cleveland State University , Cleveland , OH 44115 , USA
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Synthesis, Characterization, and Crystal Structure of a Phenanthroindolizine Skeleton from 18-Acetamino-7-Oxo-Dehydroabietane by Vilsmeier-Haack Reaction. Chem Nat Compd 2015. [DOI: 10.1007/s10600-015-1266-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Oubabi R, Auhmani A, Ait Itto MY, Auhmani A, Daran JC. (4bS,8aS)-1-Isopropyl-4b,8,8-trimethyl-4b,5,6,7,8,8a,9,10-octa-hydro-phenan-thren-2-yl benzoate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o866-7. [PMID: 25249914 PMCID: PMC4158506 DOI: 10.1107/s1600536814015827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 07/07/2014] [Indexed: 11/11/2022]
Abstract
The title compound, C27H34O2, was hemisynthesized through direct benzoyl-ation of the naturally occurring meroterpene totarol. The central fused six-membered ring has a half-chair conformation, whereas the terminal six-membered ring displays a chair conformation. The dihedral angle between the fused benzene ring and the benzoyl benzene ring is 73.05 (14)°. The S,S chirality of the mol-ecule is consistent with the synthetic pathway, and confirmed by the refinement of the Flack parameter.
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Affiliation(s)
- Radouane Oubabi
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences Semlalia, BP 2390 Marrakech 40000, Morocco
| | - Aziz Auhmani
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences Semlalia, BP 2390 Marrakech 40000, Morocco
| | - My Youssef Ait Itto
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences Semlalia, BP 2390 Marrakech 40000, Morocco
| | - Abdelwahed Auhmani
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences Semlalia, BP 2390 Marrakech 40000, Morocco
| | - Jean-Claude Daran
- Laboratoire de Chimie de Coordination, 205 route de Narbonne, 31077 Toulouse Cedex 04, France
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Oubabi R, Auhmani A, Ait Itto MY, Auhmani A, Daran JC. (4bS,8aS)-1-Isopropyl-4b,8,8-trimethyl-4b,5,6,7,8,8a,9,10-octa-hydro-phenan-thren-2-yl acetate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o317. [PMID: 24765017 PMCID: PMC3998421 DOI: 10.1107/s1600536814002748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 02/05/2014] [Indexed: 11/17/2022]
Abstract
The hemisynthesis of the title compound, C22H32O2, was carried out through direct acetylation reaction of the naturally occurring diterpene totarol [systematic name: (4bS,8aS)-4b,8,8-trimethyl-1-propan-2-yl-5,6,7,8a,9,10-hexahydrophenanthren-2-ol]. The molecule is built up from three fused six membered rings, one saturated and two unsaturated. The central unsaturated ring has a half-chair conformation, whereas the other unsaturated ring displays a chair conformation. The absolute configuration is deduced from the chemical pathway. The value of the Hooft parameter [−0.10 (6)] allowed this absolute configuration to be confirmed.
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Affiliation(s)
- Radouane Oubabi
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences, Semlalia, BP 2390, Marrakech 40000, Morocco
| | - Aziz Auhmani
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences, Semlalia, BP 2390, Marrakech 40000, Morocco
| | - My Youssef Ait Itto
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences, Semlalia, BP 2390, Marrakech 40000, Morocco
| | - Abdelwahed Auhmani
- Laboratoire de Synthése Organique et Physico-Chimie Moléculaire, Département de Chimie, Faculté des Sciences, Semlalia, BP 2390, Marrakech 40000, Morocco
| | - Jean-Claude Daran
- Laboratoire de Chimie de Coordination, 205 route de Narbonne, 31077 Toulouse Cedex 04, France
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Hu HB, Zheng XD, Jian YF, Liu JX, Zhu JH. Constituents of the root of Anemone tomentosa. Arch Pharm Res 2011; 34:1097-105. [DOI: 10.1007/s12272-011-0707-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Revised: 01/08/2011] [Accepted: 02/07/2011] [Indexed: 11/24/2022]
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Hu HB, Zheng XD, Zhu JH, Zhang XW. Two Glycosides and Other Constituents from Anemone tomentosa Roots. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Xiong Y, Wang K, Pan Y, Sun H, Tu J. Isolation, synthesis, and anti-tumor activities of a novel class of podocarpic diterpenes. Bioorg Med Chem Lett 2006; 16:786-9. [PMID: 16309905 DOI: 10.1016/j.bmcl.2005.11.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2005] [Revised: 10/26/2005] [Accepted: 11/08/2005] [Indexed: 10/25/2022]
Abstract
A novel unusual 17-carbon diterpenoid, named (+)-7-deoxynimbidiol, was isolated from the stalks of Celastrus hypoleucus (Oliv.) Warb. Its racemate and derivatives were synthesized, and the inhibitory activities of these compounds against four cultured human-tumor cell lines were evaluated. The structure-activity relationship was discussed.
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Affiliation(s)
- Yi Xiong
- Department of Chemistry, Zhejiang University 310027, PR China
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Pettit RK, Weber CA, Kean MJ, Hoffmann H, Pettit GR, Tan R, Franks KS, Horton ML. Microplate Alamar blue assay for Staphylococcus epidermidis biofilm susceptibility testing. Antimicrob Agents Chemother 2005; 49:2612-7. [PMID: 15980327 PMCID: PMC1168683 DOI: 10.1128/aac.49.7.2612-2617.2005] [Citation(s) in RCA: 232] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Biofilms are at the root of many infections largely because they are much more antibiotic resistant than their planktonic counterparts. Antibiotics that target the biofilm phenotype are desperately needed, but there is still no standard method to assess biofilm drug susceptibility. Staphylococcus epidermidis ATCC 35984 biofilms treated with eight different approved antibiotics and five different experimental compounds were exposed to the oxidation reduction indicator Alamar blue for 60 min, and reduction relative to untreated controls was determined visually and spectrophotometrically. The minimum biofilm inhibitory concentration was defined as < or = 50% reduction and a purplish well 60 min after the addition of Alamar blue. All of the approved antibiotics had biofilm MICs (MBICs) of >512 microg/ml (most >4,096 microg/ml), and four of the experimental compounds had MBICs of < or = 128 microg/ml. The experimental aaptamine derivative hystatin 3 was used to correlate Alamar blue reduction with 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) reduction and viable counts (CFU/ml) for S. epidermidis ATCC 35984, ATCC 12228, and two clinical isolates. For all four strains, Alamar blue results correlated well with XTT (r = 0.83 to 0.97) and with CFU/ml results (r = 0.85 to 0.94). Alamar blue's stability and lack of toxicity allowed CFU/ml to be determined from the same wells as Alamar blue absorbances. If the described method of microplate Alamar blue biofilm susceptibility testing, which is simple, reproducible, cost-effective, nontoxic, and amenable to high throughput, is applicable to other important biofilm forming species, it should greatly facilitate the discovery of biofilm specific agents.
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Affiliation(s)
- Robin K Pettit
- Cancer Research Institute, Arizona State University, Tempe, Arizona 85287-2404, USA.
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