1
|
Pimarane Diterpenoids from Aerial Parts of Lycopus lucidus and Their Antimicrobial Activity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:5178880. [PMID: 35154345 PMCID: PMC8837446 DOI: 10.1155/2022/5178880] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 01/18/2022] [Indexed: 12/04/2022]
Abstract
The ethyl acetate fraction obtained from aerial parts of L. lucidus was subjected for isolation of new bioactive compounds, which enabled isolation of five new pimarane-type diterpenoids, namely, 3β, 8β, 12β, 18-tetrahydroxy pimar-15-ene (10), 7α, 8β, 12β, 18-tetrahydroxy pimar-15-ene (11), 3β, 8β, 11β, 12α, 18-pentahydroxy pimar-15-ene (12), 12β acetoxy, 8β, 3β, 18-trihydroxy pimar-15-ene (13), and 3β acetoxy, 8β, 12β, 18-trihydroxy pimar-15-ene (14), along with nine known compounds. The structures were elucidated by spectroscopic analysis and comparison with literature data. The isolated new pimarane diterpenoids were examined for antimicrobial activity against Gram-negative and Gram-positive bacteria strains. Among them, the compound 3β, 8β, 12β, 18-tetrahydroxy pimar-15-ene (10) was most effective, exhibiting minimum inhibitory concentration (MIC) values of 15.62 µg/mL against Staphylococcus epidermidis, 31.25 µg/mL against Staphylococcus aureus, 62.5 µg/mL against Pseudomonas aeruginosa, and 125 µg/mL against Escherichia coli.
Collapse
|
2
|
Chawengrum P, Boonsombat J, Mahidol C, Eurtivong C, Kittakoop P, Thongnest S, Ruchirawat S. Diterpenoids with Aromatase Inhibitory Activity from the Rhizomes of Kaempferia elegans. JOURNAL OF NATURAL PRODUCTS 2021; 84:1738-1747. [PMID: 34110821 DOI: 10.1021/acs.jnatprod.0c01292] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Investigation of bioactive compounds from the rhizomes of Kaempferia elegans led to the isolation and characterization of ten new diterpenoids, namely, five 12,13-seco-diterpenoids named elegansins A-E (1-5) and five new abietanes, elegansols A-E (6-10), together with seven known diterpenoids (11-17). The structure elucidation of the new compounds was achieved by HRESIMS, NMR, and ECD spectroscopic analysis. Compounds (1-5) are the first examples of 12,13-seco-diterpenoid-type compounds representing a decalin fused dihydropyran skeleton. Plausible biosynthetic pathways for compounds 1-5 are proposed. Aromatase inhibitory activities of all compounds were evaluated, and abieta-8,11,13-trien-11-ol (16) was found to be the most potent aromatase inhibitor with an IC50 value of 3.7 μM.
Collapse
Affiliation(s)
- Pornsuda Chawengrum
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
| | - Jutatip Boonsombat
- Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
| | - Chulabhorn Mahidol
- Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
| | - Chatchakorn Eurtivong
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
| | - Prasat Kittakoop
- Chemical Biology Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), CHE, Ministry of Education, Bangkok, Thailand
| | - Sanit Thongnest
- Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Chulabhorn Research Institute, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Kamphaeng Phet 6 Road, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), CHE, Ministry of Education, Bangkok, Thailand
| |
Collapse
|
3
|
Tungcharoen P, Wattanapiromsakul C, Tansakul P, Nakamura S, Matsuda H, Tewtrakul S. Anti-inflammatory effect of isopimarane diterpenoids from Kaempferia galanga. Phytother Res 2019; 34:612-623. [PMID: 31755164 DOI: 10.1002/ptr.6549] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/18/2019] [Accepted: 10/29/2019] [Indexed: 01/19/2023]
Abstract
Two new isopimarane diterpenes, 1α-hydroxy-14α-methoxyisopimara-8(9),15-diene (7) and 1α,14α-dihydroxyisopimara-8(9),15-diene (9) and eight known isopimarane diterpenes including (-)-sandaracopimaradiene (1), 6β-acetoxysandaracopimaradiene-9α-ol (2), sandaracopimaradiene-7β,9α-diol (3), sandaracopimaradiene-1α,9α-diol (4), 6β-acetoxysandaracopimaradiene-9α-ol-1-one (5), 6β-acetoxysandaracopimaradiene-1α,9α-diol (6), 6β,14α-dihydroxyisopimara-8(9),15-diene (8), and 6β,14β-dihydroxyisopimara-8(9),15-diene (10) were isolated from hexane fraction of Kaempferia galanga ethanol extract. Compounds 5, 6, 8, and 9 exerted the good anti-inflammatory effect on lipopolysaccharide-stimulated nitric oxide production from RAW264.7 cells with IC50 of 11.2, 7.7, 14.3, and 12.1 μM, respectively. These four compounds inhibited nitric oxide synthase (iNOS) mRNA expression. Compounds 5 and 6 also suppressed cyclooxygenase 2 (COX-2) mRNA expression; in addition, compound 6 had mild inhibitory effect on TNF-α mRNA. Among these compounds, 5 dramatically inhibited iNOS and COX-2 mRNA expression. The influential structures were proposed to be oxygen substitute at C-1, C-6, and α-OH at C-14.
Collapse
Affiliation(s)
- Pattreeya Tungcharoen
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Thailand
| | - Chatchai Wattanapiromsakul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Thailand.,Excellent Research laboratory, Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Thailand
| | - Pimpimon Tansakul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Thailand.,Excellent Research laboratory, Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Thailand
| | - Seikou Nakamura
- Department of Pharmacognosy, Division of Medicinal Chemical Sciences, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Hisashi Matsuda
- Department of Pharmacognosy, Division of Medicinal Chemical Sciences, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Supinya Tewtrakul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Thailand.,Excellent Research laboratory, Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Thailand
| |
Collapse
|
4
|
Yılmaz A, Çağlar P, Dirmenci T, Gören N, Topçu G. A Novel Isopimarane Diterpenoid with Acetylcholinesterase Inhibitory Activity from Nepeta sorgerae, an Endemic Species to the Nemrut Mountain. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700602] [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
From the dichloromethane extract of Nepeta sorgerae, the isolation and structure elucidation are now reported of a new isopimarane diterpenoid, named sorgerolone, and two known triterpenoids, oleanolic acid and ursolic acid. Antioxidant activity of the extracts and the isolated terpenoids was determined by the DPPH free radical scavenging and lipid peroxidation inhibition (β-carotene bleaching) methods. Anticholinesterase activity of the extracts and isolates was investigated by Ellman's method against AChE and BChE enzymes. Although the antioxidant activity results were low, the AChE enzyme inhibition of the extracts and terpenoids was very promising.
Collapse
Affiliation(s)
- Anıl Yılmaz
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul 34469, Turkey
- Department of Pharmacognosy, Faculty of Pharmacy, Bezmialem Vakif University, Istanbul 34093, Turkey
| | - Pınar Çağlar
- Department of Biology, Faculty of Arts & Science, Yildiz Technical University, Istanbul 34210, Turkey
| | - Tuncay Dirmenci
- Department of Science and Mathematics for Secondary Education, Necatibey Faculty of Education, Balikesir University, Balıkesir 10145, Turkey
| | - Nezhun Gören
- Department of Biology, Faculty of Arts & Science, Yildiz Technical University, Istanbul 34210, Turkey
| | - Gülaçtı Topçu
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul 34469, Turkey
- Department of Pharmacognosy, Faculty of Pharmacy, Bezmialem Vakif University, Istanbul 34093, Turkey
| |
Collapse
|