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Xu K, Zhou Q, Li XQ, Luo T, Yuan XL, Zhang ZF, Zhang P. Cadinane- and drimane-type sesquiterpenoids produced by Paecilomyces sp. TE-540, an endophyte from Nicotiana tabacum L., are acetylcholinesterase inhibitors. Bioorg Chem 2020; 104:104252. [PMID: 32911187 DOI: 10.1016/j.bioorg.2020.104252] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 12/22/2022]
Abstract
Sesquiterpenoids with diverse skeleton types are regarded as potential lead compounds in pharmacological and other applications. Herein, we report the discovery of two new cadinane-type sesquiterpenoids, paecilacadinol A (1) and B (2); two new drimane-type sesquiterpenoids, ustusol D (3) and ustusol E (4); and six known analogs (5-10) from the endophytic fungus Paecilomyces sp. TE-540, enriching the structural diversity of naturally occurring sesquiterpenoids. Their planar structures were determined on the basis of detailed interpretation of 1D and 2D NMR spectroscopy and HRESIMS data, while their stereochemical structures were established by X-ray crystallographic analyses for 1 and 3-8 and theoretical calculations for 2. Notably, compounds 1 and 2 represent novel examples of cadinane-type sesquiterpenoids with ether bonds formed by intramolecular dehydration. Compounds 5 and 6 showed moderate activities against acetylcholinesterase (AChE), with IC50 values of 43.02 ± 6.01 and 35.97 ± 2.12 μM, respectively. Docking analysis predicted that 5 bound well in the catalytic pocket of AChE via hydrophobic interactions with Trp84, Gly117, Ser122, and Tyr121 residues, while 6 was located with Asp72 and Ser122 residues.
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Affiliation(s)
- Kuo Xu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Qi Zhou
- Hubei University of Chinese Medicine, Wuhan 430070, China
| | - Xiu-Qi Li
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Tian Luo
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Xiao-Long Yuan
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Zhong-Feng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Peng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
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He D, Slebodnick C, Rakotondraibe LH. Bioactive drimane sesquiterpenoids and aromatic glycosides from Cinnamosma fragrans. Bioorg Med Chem Lett 2017; 27:1754-1759. [PMID: 28274626 DOI: 10.1016/j.bmcl.2017.02.067] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 12/29/2016] [Revised: 02/22/2017] [Accepted: 02/26/2017] [Indexed: 11/17/2022]
Abstract
Phytochemical investigation of the ethyl acetate and methanol extracts of the bark of Madagascan endemic and medicinal plant Cinnamosma fragrans led to the isolation of two drimane sesquiterpene derivatives: cinnafragroside A (1) and cinnafragrin E (2), two aromatic glycosides: 3,4,5-trimethoxyphenol 1-O-β-d-apiofuranosyl-(1→6)-β-d-glucopyranoside (3) and 3,4-dimethoxyphenyl-1-O-β-d-apiofuranosyl-(1→6)-β-d-glucopyranoside (4), together with 12 known compounds identified as: helicide (6), 1-(α-l-rhamnosyl(1→6)-β-d-glucopyranosyloxy)-3,4,5-trimethoxybenzene (7), vanilloloside (8), cinnamadin (9), ugandensolide (10), cinnamosmolide (11), cinnamolide (12), polygodial (13), cinnamodial (14), bemadienolide (15), 4-isopropyl-6-methyl-α-tetralone (16), and capsicodendrin (17). Another new compound, 11-norcinnafragrolide-9-one (5), was obtained during chemical derivatization of capsicodendrin and gave a hint to understanding the structure required for the antiproliferative activity of 17. The structures of the new compounds were elucidated based on the interpretation of their spectroscopic data including one and two dimensional nuclear magnetic resonance (1D- and 2D-NMR) and mass spectroscopic data. All isolated compounds were evaluated against the hormone dependent breast cancer cell line MCF-7. Compound 17 exhibited the most potent activity with an IC50 value of 0.6μM. Our preliminary SAR study showed that the hydroxyl group at C-12' and the presence of conjugated carbonyl contribute to the antiproliferative activity.
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Affiliation(s)
- Dahai He
- College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States; College of Pharmacy, Southwest University for Nationalities, Chengdu, Sichuan 610041, China
| | - Carla Slebodnick
- Department of Chemistry, ILSB, Virginia Tech, Blacksburg, VA 24061, United States
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Prota N, Mumm R, Bouwmeester HJ, Jongsma MA. Comparison of the chemical composition of three species of smartweed (genus Persicaria) with a focus on drimane sesquiterpenoids. Phytochemistry 2014; 108:129-136. [PMID: 25453911 DOI: 10.1016/j.phytochem.2014.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 09/26/2014] [Accepted: 10/01/2014] [Indexed: 06/04/2023]
Abstract
The genus Persicaria is known to include species accumulating drimane sesquiterpenoids, but a comparative analysis highlighting the compositional differences has not been done. In this study, the secondary metabolites of both flowers and leaves of Persicariahydropiper, Persicariamaculosa and Persicariaminor, three species which occur in the same habitat, were compared. Using gas chromatography-mass spectrometry (GC-MS) analysis of extracts, overall 21/29 identified compounds in extracts were sesquiterpenoids and 5/29 were drimanes. Polygodial was detected in all species, though not in every sample of P. maculosa. On average, P. hydropiper flowers contained about 6.2 mg g FW(-1) of polygodial, but P. minor flowers had 200-fold, and P. maculosa 100,000 fold lower concentrations. Comparatively, also other sesquiterpenes were much lower in those species, suggesting the fitness benefit to depend on either investing a lot or not at all in terpenoid-based secondary defences. For P. hydropiper, effects of flower and leaf development and headspace volatiles were analysed as well. The flower stage immediately after fertilisation was the one with the highest content of drimane sesquiterpenoids and leaves contained about 10-fold less of these compounds compared to flowers. The headspace of P. hydropiper contained 8 compounds: one monoterpene, one alkyl aldehyde and six sesquiterpenes, but none were drimanes. The potential ecological significance of the presence or absence of drimane sesquiterpenoids and other metabolites for these plant species are discussed.
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Affiliation(s)
- N Prota
- Plant Research International, PO Box 619, 6700 AP Wageningen, The Netherlands; Laboratory of Plant Physiology, Wageningen University, PO Box 658, 6700 AR Wageningen, The Netherlands
| | - R Mumm
- Plant Research International, PO Box 619, 6700 AP Wageningen, The Netherlands; Centre for BioSystems Genomics, PO Box 98, 6700 AB Wageningen, The Netherlands
| | - H J Bouwmeester
- Laboratory of Plant Physiology, Wageningen University, PO Box 658, 6700 AR Wageningen, The Netherlands
| | - M A Jongsma
- Plant Research International, PO Box 619, 6700 AP Wageningen, The Netherlands.
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Ying YM, Zhang LY, Zhang X, Bai HB, Liang DE, Ma LF, Shan WG, Zhan ZJ. Terpenoids with alpha-glucosidase inhibitory activity from the submerged culture of Inonotus obliquus. Phytochemistry 2014; 108:171-176. [PMID: 25446238 DOI: 10.1016/j.phytochem.2014.09.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 09/17/2014] [Accepted: 09/01/2014] [Indexed: 06/04/2023]
Abstract
Lanostane-type triterpenoids, inotolactones A and B, a drimane-type sesquiterpenoid, inotolactone C, and five known terpenoids 6β-hydroxy-trans-dihydroconfertifolin, inotodiol, 3β,22-dihydroxyanosta-7,9(11),24-triene, 3β-hydroxycinnamolide, and 17-hydroxy-ent-atisan-19-oic acid, were isolated from the submerged culture of chaga mushroom, Inonotus obliquus. Their structures were characterized by spectroscopic methods, including MS and NMR (1D and 2D) spectroscopic techniques. Inotolactones A and B, examples of lanostane-type triterpenoids bearing α,β-dimethyl, α,β-unsaturated δ-lactone side chains, exhibited more potent alpha-glucosidase inhibitory activities than the positive control acarbose. This finding might be related to the anti-hyperglycemic properties of the fungus and to its popular role as a diabetes treatment. In addition, a drimane-type sesquiterpenoid and an atisane-type diterpenoid were isolated from I. obliquus.
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Affiliation(s)
- You-Min Ying
- College of Pharmaceutical Science, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Lin-Yan Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Xia Zhang
- Institute of Biotechnology, Hangzhou East China Pharmaceutical Group, 866 Moganshan Road, Hangzhou 310011, PR China
| | - Hai-Bo Bai
- Institute of Biotechnology, Hangzhou East China Pharmaceutical Group, 866 Moganshan Road, Hangzhou 310011, PR China
| | - Dong-E Liang
- College of Pharmaceutical Science, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Lie-Feng Ma
- College of Pharmaceutical Science, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China
| | - Wei-Guang Shan
- College of Pharmaceutical Science, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China.
| | - Zha-Jun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, PR China.
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Hansson D, Wubshet S, Olson Å, Karlsson M, Staerk D, Broberg A. Secondary metabolite comparison of the species within the Heterobasidion annosum s.l. complex. Phytochemistry 2014; 108:243-51. [PMID: 25260338 DOI: 10.1016/j.phytochem.2014.08.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/25/2014] [Accepted: 08/30/2014] [Indexed: 05/20/2023]
Abstract
The metabolite production of the five members of the fungal species complex Heterobasidion annosum s.l., i.e. H. annosum s.s., H. abietinum, H. parviporum, H. occidentale and H. irregulare, was analyzed by LC-HRMS. The five members are described to have differences in host preferences: H. annosum s.s. and H. irregulare are pine infecting species, and H. parviporum, H. occidentale and H. abietinum are non-pine infecting. Principal component analysis (PCA) of the LC-HRMS data showed that samples from the five species could be separated into five groups and in accordance with the differences in host preferences. Twenty-three compounds, important to the observed PCA grouping, were isolated and identified. The main contributor to the separation of the pine infecting species from the non-pine infecting species in PC1 was the benzohydrofuran fomannoxin, which was only detected in the pine infecting species H. annosum s.s. and H. irregulare. These two species were further separated in PC3, and one major contributor here was the sesquiterpene deoxyfomannosin A. The three non-pine infecting species were separated in PC2, by epoxydrimenol that was detected in only two of the species and further in PC4, where a few fomannoxin related compounds were important for the grouping. During the work, three unknown compounds were isolated and described: 3-hydroxy-2-(1,3-dihydroxypropan-2-yl)-2,3-dihydrobenzofuran-5-carbaldehyde, 3-hydroxy-2-(1,2,3-trihydroxypropan-2-yl)-2,3-dihydrobenzofuran-5-carbaldehyde and 3-hydroxy-2,3-dihydrobenzofuran-5-carboxylic acid.
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Affiliation(s)
- David Hansson
- Department of Chemistry and Biotechnology, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-75007 Uppsala, Sweden
| | - Sileshi Wubshet
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Åke Olson
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7026, SE-75007 Uppsala, Sweden
| | - Magnus Karlsson
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7026, SE-75007 Uppsala, Sweden
| | - Dan Staerk
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Anders Broberg
- Department of Chemistry and Biotechnology, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-75007 Uppsala, Sweden.
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