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Nazarski RB. Summary of DFT calculations coupled with current statistical and/or artificial neural network (ANN) methods to assist experimental NMR data in identifying diastereomeric structures. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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2
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Latypov SK, Kondrashova SA, Polyancev FM, Sinyashin OG. Quantum Chemical Calculations of 31P NMR Chemical Shifts in Nickel Complexes: Scope and Limitations. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Shamil K. Latypov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
| | - Svetlana A. Kondrashova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
| | - Fedor M. Polyancev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
| | - Oleg G. Sinyashin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
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3
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Di Micco S, Giannini C, Previtali A, Lucenti E, Bifulco G. Chemical shift assignment of mono- and di-bromo triimidazo[1,2-a:1',2'-c:1″,2″-e][1,3,5]triazine derivatives by DFT/NMR integrated approach. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2018; 57:82-92. [PMID: 30421826 DOI: 10.1002/mrc.4804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/19/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
Mono- and di-bromo derivatives of triimidazo[1,2-a:1',2'-c:1″,2″-e][1,3,5]triazine have been proposed as new organic molecules presenting a very rich and complex photophysical behavior. Thus, we afforded the correct chemical shift assignment by integrating the experimental data with DFT calculation of NMR parameters. Our findings lay foundation for a structural reference in the organic synthesis and characterization of new congeners of this intriguing class of molecules.
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Affiliation(s)
- Simone Di Micco
- Department of Pharmacy, University of Salerno, Fisciano (SA), Italy
| | - Clelia Giannini
- Department of Chemistry, Università degli Studi di Milano, Milan, Italy
| | - Andrea Previtali
- Department of Chemistry, Università degli Studi di Milano, Milan, Italy
| | - Elena Lucenti
- ISTM-CNR, Institute of Molecular Science and Technologies, INSTM RU, National Interuniversity Consortium of Material Science and Technology, Milan, Italy
| | - Giuseppe Bifulco
- Department of Pharmacy, University of Salerno, Fisciano (SA), Italy
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4
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Oliveira RP, Demuner AJ, Alvarenga ES, Barbosa LCA, de Melo Silva T. A novel alkaloid isolated from Crotalaria paulina and identified by NMR and DFT calculations. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Hu L, Liu Y, Wang Y, Wang Z, Huang J, Xue Y, Liu J, Liu Z, Chen Y, Zhang Y. Discovery of acylphloroglucinol-based meroterpenoid enantiomers as KSHV inhibitors from Hypericum japonicum. RSC Adv 2018; 8:24101-24109. [PMID: 35539193 PMCID: PMC9081833 DOI: 10.1039/c8ra04073g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 06/26/2018] [Indexed: 11/28/2022] Open
Abstract
Kaposi's sarcoma associated herpesvirus (KSHV) has gained considerable attention as a type of carcinogenic pathogen. Recent research suggests that KSHV has participated in the pathogenesis of Kaposi's sarcoma-related malignant neoplastic diseases. Viral lytic infection might be pivotal for the etiopathogenesis of KSHV-induced diseases; however, most clinical KSHV lytic replication inhibitors like ganciclovir, nelfinavir, or cidofovir do not restrain virus replication effectively enough to achieve clinical efficacy. In our continued pharmaceutical studies on Chinese herbal medicines, new acylphloroglucinol-based meroterpenoid enantiomers have been discovered from Hypericum japonicum. Most of these metabolites have potential inhibitory activities that target KSHV lytic replication. Amongst these analogues, compounds 1a and 1b possess an unreported ring system cyclopenta[b]chromene. Compounds 1a with 4a exhibit stronger inhibitory activities towards the lytic replication of KSHV in Vero cells. In addition, 1a and 4a have IC50 values of 8.30 and 4.90 μM and selectivity indexes of 23.49 and 25.70, respectively. Qualitative and quantitative SAR and molecular docking studies for acylphloroglucinol-based meroterpenoids with regard to anti-KSHV activity were conducted. An explanation for the variation in the activity and selectivity indexes was proposed in accordance with the predicted binding pose found with molecular docking to a putative target, thymidylate synthase (kTS). Compounds 1a and 4a have potential for further development and optimization of their anti-KSHV activities which could lead to new candidate drugs. New enantiomers (1a/1b–4a/4b) were discovered from Hypericum japonicum. 1a/1b possessed a novel ring system cyclopenta[b]chromene. 1a and 4a exhibited promising anti-KSHV activities. QSAR studies for enantiomers on anti-KSHV activity were conducted.![]()
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6
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Wang M, Yu BW, Yu MH, Gao LX, Li JY, Wang HY, Li J, Hou AJ. New Isoprenylated Phenolic Compounds fromMorus laevigata. Chem Biodivers 2015; 12:937-45. [DOI: 10.1002/cbdv.201400210] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Indexed: 11/08/2022]
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7
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Hanáková Z, Hošek J, Babula P, Dall'Acqua S, Václavík J, Šmejkal K. C-Geranylated Flavanones from Paulownia tomentosa Fruits as Potential Anti-inflammatory Compounds Acting via Inhibition of TNF-α Production. JOURNAL OF NATURAL PRODUCTS 2015; 78:850-863. [PMID: 25735399 DOI: 10.1021/acs.jnatprod.5b00005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Eleven new C-geranylated flavonoids, tomentodiplacones L, M, and N (1, 2, 10), tomentodiplacol B (3), 3',4'-O-dimethyl-5'-hydroxydiplacone (4), mimulones F, G, and H (5, 6, 7), paulowniones A (8) and B (9), tomentone (11), and 3',4',5'-trimethoxyflavanone (12), together with 11 known flavonoids (13-23), were isolated from fruits of Paulownia tomentosa. The structures of the compounds isolated were determined by spectroscopic data interpretation. The ability of compounds 1-23, together with the nonprenylated flavanones eriodictyol (24) and naringenin (25), to reduce the production of the pro-inflammatory cytokine TNF-α in THP-1 cells after bacterial lipopolysaccharide stimulation was evaluated using an in vitro screening test. The preliminary structure-activity relationships of these derivatives were also studied, and the correlation of their TNF-α inhibitory activity with their lipophilicity was investigated. The mechanism of action of compounds with significant antiphlogistic potential (4, 7, 10, 14, 22) was investigated. These compounds reduced both the secretion of TNF-α and the level of its corresponding mRNA. Compounds 4, 7, 10, 14, and 22 inhibited the nuclear translocation of NF-κB, which controls the expression of TNF-α, by blocking the degradation of IκB.
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Affiliation(s)
| | | | | | - Stefano Dall'Acqua
- §Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Via F. Marzolo 5, 35131 Padua, Italy
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8
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Latypov SK, Polyancev FM, Yakhvarov DG, Sinyashin OG. Quantum chemical calculations of31P NMR chemical shifts: scopes and limitations. Phys Chem Chem Phys 2015; 17:6976-87. [DOI: 10.1039/c5cp00240k] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
High level of theory is not necessarily needed to obtain rather accurate predictions of31P chemical shifts by GIAO method. For example, the PBE1PBE/6-311G(2d,2p)//PBE1PBE/6-31+G(d) combination allowed to obtain good results for variety of middle-size organophosphorus compounds (M= 200–700 Da).
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Affiliation(s)
- Shamil K. Latypov
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Fedor M. Polyancev
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Dmitry G. Yakhvarov
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Oleg G. Sinyashin
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
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9
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Zhang G, Wu G, Zhu T, Kurtán T, Mándi A, Jiao J, Li J, Qi X, Gu Q, Li D. Meroterpenoids with diverse ring systems from the sponge-associated fungus Alternaria sp. JJY-32. JOURNAL OF NATURAL PRODUCTS 2013; 76:1946-1957. [PMID: 24128115 DOI: 10.1021/np4005757] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Fifteen meroterpenoids (1-15) with diverse ring systems including an unprecedented oxaspiro[5.5]nonane-fused cyclohexenone (1), hydrogenated benzofurans (2-5), hydrogenated chromans (6, 7), hydrogenated cyclopenta[b]chromans (8-11), and four monocyclic structures (12-15) were isolated from the sponge-associated fungus Alternaria sp. JJY-32. The structures were elucidated by detailed spectroscopic analysis, including 2D NMR and electronic circular dichroism (ECD) calculations, and assisted by chemical derivatizations. On the basis of supplementation experiments with specific enzyme inhibitors and putative precursors, a shikimate-isoprenoid hybrid biosynthetic pathway is proposed. The NF-κB inhibitory activities of 1-15 were tested, and all of them, except 6 and 7 (IC50 > 100 μM), showed activities with IC50 values ranging from 39 to 85 μM in RAW264.7 cells.
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Affiliation(s)
- Guojian Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
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10
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Maggio A, Rosselli S, Brancazio CL, Spadaro V, Raimondo FM, Bruno M. Metabolites from the Aerial Parts of the Sicilian Population of Artemisia alba. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Phytochemical investigation of the CH2Cl2 extract of the aerial parts of Artemisia alba Turra afforded one new irregular sesquiterpenoid, artemiric acid, and five known metabolites: hydroxydavanone, the coumarins isofraxidin and scopoletin, (6 S*,7 S*,10 R*)–6,10-dimethyl-7,10-epoxyocta-11-enoic acid and artalbic acid. From the MeOH extract three flavonoids were identified: chrysoeriol, quercetin and isorhamnetin. The possible biogenetic pathways of artemiric and artalbic acids are discussed.
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Affiliation(s)
- Antonella Maggio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STeBiCEF), Palermo University, Viale delle Scienze Palermo 90128, Italy
| | - Sergio Rosselli
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STeBiCEF), Palermo University, Viale delle Scienze Palermo 90128, Italy
| | - Celeste Laura Brancazio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STeBiCEF), Palermo University, Viale delle Scienze Palermo 90128, Italy
| | - Vivienne Spadaro
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STeBiCEF), Palermo University, Viale delle Scienze Palermo 90128, Italy
| | - Francesco Maria Raimondo
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STeBiCEF), Palermo University, Viale delle Scienze Palermo 90128, Italy
| | - Maurizio Bruno
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STeBiCEF), Palermo University, Viale delle Scienze Palermo 90128, Italy
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11
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Computation of 3JHH coupling constants with a combination of density functional theory and semiempirical calculations. Application to complex molecules. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.10.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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12
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Rosselli S, Bruno M, Maggio A, Raccuglia RA, Safder M, Lai CY, Bastow KF, Lee KH. Cytotoxic geranylflavonoids from Bonannia graeca. PHYTOCHEMISTRY 2011; 72:942-5. [PMID: 21459391 PMCID: PMC3151324 DOI: 10.1016/j.phytochem.2011.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Revised: 01/27/2011] [Accepted: 03/02/2011] [Indexed: 05/14/2023]
Abstract
The analysis of the aerial parts of Bonannia graeca led to the isolation and characterization of polar geranylated flavonoids (6 and 7). The structure elucidation was performed by extensive spectroscopic methods (1D and 2D NMR) and comparison with literature data. All natural flavonoids isolated from B. graeca (1-7) and some synthetic derivatives (8-11) were tested for cytotoxic activity against four human tumor cell lines. Preliminary structure-activity relationship correlations are discussed.
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Affiliation(s)
- Sergio Rosselli
- Dipartimento di Chimica Organica, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Maurizio Bruno
- Dipartimento di Chimica Organica, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy
- Corresponding authors. Tel.: +1919-962-0066; fax: +1919-966-3893; (K. H. Lee); Tel.: +39091596905; fax: +39091596825; . (M. Bruno)
| | - Antonella Maggio
- Dipartimento di Chimica Organica, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Rosa Angela Raccuglia
- Dipartimento di Chimica Organica, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy
| | - Muhammad Safder
- Dipartimento di Chimica Organica, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy
- International Centre for Chemical and Biological Sciences, HEJ Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan
| | - Chin-Yu Lai
- Division of Medicinal Chemistry and Natural Products, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7568, USA
| | - Kenneth F. Bastow
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7568, USA
| | - Kuo-Hsiung Lee
- Division of Medicinal Chemistry and Natural Products, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7568, USA
- Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan
- Corresponding authors. Tel.: +1919-962-0066; fax: +1919-966-3893; (K. H. Lee); Tel.: +39091596905; fax: +39091596825; . (M. Bruno)
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13
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Hu X, Wu JW, Zhang XD, Zhao QS, Huang JM, Wang HY, Hou AJ. Isoprenylated flavonoids and adipogenesis-promoting constituents from Morus nigra. JOURNAL OF NATURAL PRODUCTS 2011; 74:816-824. [PMID: 21401118 DOI: 10.1021/np100907d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Ten new isoprenylated flavonoids, nigrasins A-J (1-10), and three known compounds were isolated from the twigs of Morus nigra. Compounds 8 and 9 promoted adipogenesis, characterized by increased lipid droplet and triglyceride content in 3T3L1 cells, and induced up-regulation of the expression of adipocyte-specific genes, aP2 and GLUT4.
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Affiliation(s)
- Xiao Hu
- Department of Pharmacognosy, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai 201203, People's Republic of China
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14
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Affiliation(s)
- Nigel C Veitch
- Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW93AB, UK.
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15
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Chimichi S, Boccalini M, Matteucci A, Kharlamov SV, Latypov SK, Sinyashin OG. GIAO DFT 13C/15N chemical shifts in regioisomeric structure determination of fused pyrazoles. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:607-613. [PMID: 20589725 DOI: 10.1002/mrc.2633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The combined use of two-dimensional NMR correlation experiments and gauge including atomic orbital density functional theory in (13)C NMR chemical shift (CS) calculations allowed reliable and simple structural determination of regioisomeric heterocyclic systems that originate from the reactions of acylquinolinones with substituted hydrazines. Moreover, the results of differential analysis between the calculated (15)N NMR CSs for hypothetical structures and the experimental data of the title azaheterocyclic systems were even more advantageous with respect to (13)C because there was no need for correlational analysis: structures of the regioisomeric compounds could be determined just by direct comparison.
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16
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Petiolins J-M, prenylated acylphloroglucinols from Hypericum pseudopetiolatum var. kiusianum. Bioorg Med Chem Lett 2010; 20:4451-5. [PMID: 20598881 DOI: 10.1016/j.bmcl.2010.06.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Revised: 06/07/2010] [Accepted: 06/08/2010] [Indexed: 11/24/2022]
Abstract
Four new prenylated acylphloroglucinols, petiolins J-M (1-4), were isolated from aerial parts of Hypericum pseudopetiolatum var. kiusianum, and the structures were elucidated by spectroscopic data and a single-crystal X-ray diffraction analysis. Petiolin J (1) exhibited antimicrobial activity.
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17
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Jung D, Lee Y, Kim S. New Synthetic Routes to Biologically Interesting Geranylated Flavanones and Geranylated Chalcones: First Total Synthesis of (±)-Prostratol F, Xanthoangelol, and (±)-Lespeol. Helv Chim Acta 2010. [DOI: 10.1002/hlca.200900251] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Di Micco S, Chini MG, Riccio R, Bifulco G. Quantum Mechanical Calculation of NMR Parameters in the Stereostructural Determination of Natural Products. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901255] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Simone Di Micco
- Department of Pharmaceutical Science, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy, Fax: +39‐089969602
| | - Maria Giovanna Chini
- Department of Pharmaceutical Science, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy, Fax: +39‐089969602
| | - Raffaele Riccio
- Department of Pharmaceutical Science, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy, Fax: +39‐089969602
| | - Giuseppe Bifulco
- Department of Pharmaceutical Science, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy, Fax: +39‐089969602
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Chini MG, Riccio R, Bifulco G. DFT/NMR integrated approach: a valid support to the total synthesis of chiral molecules. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2008; 46:962-968. [PMID: 18720447 DOI: 10.1002/mrc.2288] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The analysis of the configuration of kedarcidin chromophore and palau'amine through quantum chemical calculation of Js and chemical shifts suggests a fast and convenient quantum chemical approach that can be applied prior to proceeding to the total synthesis of complex natural compounds in order to avoid loss of time and resources employed in the total synthesis of wrong diastereoisomers.
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Affiliation(s)
- Maria Giovanna Chini
- Dipartimento di Scienze Farmaceutiche, Università di Salerno, Via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy
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20
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Latypov S, Balandina A, Boccalini M, Matteucci A, Usachev K, Chimichi S. Structure Determination of Regioisomeric Fused Heterocycles by the Combined Use of 2D NMR Experiments and GIAO DFT13C Chemical Shifts. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800550] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Tanaka N, Kubota T, Ishiyama H, Araki A, Kashiwada Y, Takaishi Y, Mikami Y, Kobayashi J. Petiolins A-C, phloroglucinol derivatives from Hypericum pseudopetiolatum var. kiusianum. Bioorg Med Chem 2008; 16:5619-23. [PMID: 18430575 DOI: 10.1016/j.bmc.2008.03.076] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2008] [Revised: 03/27/2008] [Accepted: 03/28/2008] [Indexed: 11/18/2022]
Abstract
Two new phloroglucinol derivatives possessing chromane skeleton, petiolins A (1) and B (2), and a new phloroglucinol derivative containing a dihydrofuran ring, petiolin C (3), were isolated from aerial parts of Hypericum pseudopetiolatum var. kiusianum. The gross structures of 1-3 were elucidated by spectroscopic data, and the relative stereochemistry of 3 was elucidated by NOESY data. Petiolins A-C (1-3) showed modest cytotoxicity, while petiolin C (3) exhibited antifungal activity.
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Affiliation(s)
- Naonobu Tanaka
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
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