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Tsuchimoto T, Johshita T, Sambai K, Saegusa N, Hayashi T, Tani T, Osano M. In(ONf) 3-catalyzed 7-membered carbon-ring-forming annulation of heteroarylindoles with α,β-unsaturated carbonyl compounds. Org Chem Front 2021. [DOI: 10.1039/d1qo00050k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We developed the two recipes, on the indium-catalyzed reductive and oxidative 7-membered carbon-ring-forming annulations of heteroarylindoles with a,β-unsaturated carbonyl compounds.
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Affiliation(s)
- Teruhisa Tsuchimoto
- Department of Applied Chemistry
- School of Science and Technology
- Meiji University
- Tama-ku
- Japan
| | - Takahiro Johshita
- Department of Applied Chemistry
- School of Science and Technology
- Meiji University
- Tama-ku
- Japan
| | - Kazuhiro Sambai
- Department of Applied Chemistry
- School of Science and Technology
- Meiji University
- Tama-ku
- Japan
| | - Naoki Saegusa
- Department of Applied Chemistry
- School of Science and Technology
- Meiji University
- Tama-ku
- Japan
| | - Takumi Hayashi
- Department of Applied Chemistry
- School of Science and Technology
- Meiji University
- Tama-ku
- Japan
| | - Tomohiro Tani
- Department of Applied Chemistry
- School of Science and Technology
- Meiji University
- Tama-ku
- Japan
| | - Mana Osano
- Department of Applied Chemistry
- School of Science and Technology
- Meiji University
- Tama-ku
- Japan
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Abstract
Cinnamomum is a genus of the family Lauraceae, which has been recognized worldwide as an important genus due to its beneficial uses. A great deal of research on its phytochemistry and pharmacological effects has been conducted. It is noteworthy that terpenoids are the characteristic of Cinnamomum due to the peculiar structures and significant biological effects. For a more in-depth study and the better use of Cinnamomum plants in the future, the chemical structures and biological effects of terpenoids obtained from Cinnamomum were summarized in the present study. To date, a total of 181 terpenoids with various skeletons have been isolated from Cinnamomum. These compounds have been demonstrated to play an important role in immunomodulatory, anti-inflammatory, antimicrobial, antioxidant, and anticancer activities. However, studies on the bioactive components from Cinnamomum plants have only focused on a dozen species. Hence, further studies on the potential pharmacological effects need to be conducted in the future.
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Yang S, Hu H, Hu T, Wang Q, Ye M, Luo J, Peng Y, Zhang R. Chemical constituents of Cinnamomum septentrionale leaf litter and its allelopathic activity on the growth of maize (Zea mays). Nat Prod Res 2016; 31:1314-1317. [PMID: 27690641 DOI: 10.1080/14786419.2016.1236102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A pot experiment was conducted to study the effect of decomposing Cinnamomum septentrionale leaf litter on the growth of maize. In this study, the morphological traits of maize were significantly inhibited when the leaf litter amount reached or exceeded 40 g per pot; Furthermore, during the early growth stage or with a large amount of litter addition, the pigment contents were inhibited by C. septentrionale leaf litter. Gas chromatography-mass spectrometry was used to determine the volatile substances of leaf litter and 34 compounds were identified, several of which were reported to be phytotoxic. In conclusion, the leaf litter of C. septentrionale showed a strong allelopathic effect on the growth of maize. Thus, it is better to avoid the growing of maize under or near the C. septentrionale plantation unless the leaf litter could be eliminated in time or other effective leaf litter processing methods could be implemented.
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Affiliation(s)
- Shanshan Yang
- a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China
| | - Hongling Hu
- a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China
| | - Tingxing Hu
- a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China
| | - Qian Wang
- b Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education , College of Life Science, Southwest University , Chongqing , China
| | - Mao Ye
- a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China
| | - Jie Luo
- a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China
| | - Yong Peng
- a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China
| | - Ruyi Zhang
- a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China
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Sriramavaratharajan V, Sudha V, Murugan R. Characterization of the leaf essential oils of an endemic species Cinnamomum perrottetii from Western Ghats, India. Nat Prod Res 2015; 30:1085-7. [PMID: 26453373 DOI: 10.1080/14786419.2015.1095746] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Essential oils from the leaf of Cinnamomum perrottetii Meissn. collected from three distinct populations in the southern Western Ghats, India were analysed by GC-FID and GC-MS. A total of 56 volatile constituents representing 92.2-96.3% of the oils were identified. Variations in the chemical constituents of the oils were found. Only three major components namely, α-pinene (5.1-6.6%), tau-cadinol (8.7-20.5%) and α-cadinol (7.3-13%) out of 10 were found in all three samples. To the best of our knowledge, this is the first report on the chemical compositions of leaf essential oil of C. perrottetii.
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Affiliation(s)
| | - Veerappan Sudha
- a School of Chemical and Biotechnology , SASTRA University , Thanjavur , India
| | - Ramar Murugan
- a School of Chemical and Biotechnology , SASTRA University , Thanjavur , India
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Lai Y, Liu T, Sa R, Wei X, Xue Y, Wu Z, Luo Z, Xiang M, Zhang Y, Yao G. Neolignans with a Rare 2-Oxaspiro[4.5]deca-6,9-dien-8-one Motif from the Stem Bark of Cinnamomum subavenium. JOURNAL OF NATURAL PRODUCTS 2015; 78:1740-1744. [PMID: 26087384 DOI: 10.1021/np5010533] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two pairs of racemic spirodienone neolignans with a rare 2-oxaspiro[4.5]deca-6,9-dien-8-one motif, named (±)-subaveniumins A (1) and B (2), were isolated from the bark of Cinnamomum subavenium. The chiral separation of the (+)-1, (-)-1, (+)-2, and (-)-2 enantiomers was accomplished via high-performance liquid chromatography on a chiral column. Their structures were elucidated using single-crystal X-ray diffraction and spectroscopic analyses (UV, IR, HRESIMS, and 1D and 2D NMR). The absolute configurations of the enantiomers were determined by comparing the experimental and calculated electronic circular dichroic spectra. The (+)-1, (-)-1, (+)-2, and (-)-2 enantiomers exhibited moderate inhibitory effects against NO production in RAW264.7 mouse macrophages induced by lipopolysaccharide, with IC50 values of 17.9, 5.6, 15.1, and 4.3 μM, respectively.
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Affiliation(s)
- Yongji Lai
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
- §Department of Pharmacy, The Central Hospital of Wuhan, Wuhan 430014, People's Republic of China
| | - Tingting Liu
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Rongjian Sa
- ‡Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Xialan Wei
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yongbo Xue
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Zhaodi Wu
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Zengwei Luo
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Ming Xiang
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yonghui Zhang
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guangmin Yao
- †Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
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Pflästerer D, Rettenmeier E, Schneider S, de Las Heras Ruiz E, Rudolph M, Hashmi ASK. Highly Efficient Gold-Catalyzed Synthesis of Dibenzocycloheptatrienes. Chemistry 2014; 20:6752-5. [DOI: 10.1002/chem.201402015] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Indexed: 01/05/2023]
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Subamolide a induces mitotic catastrophe accompanied by apoptosis in human lung cancer cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:828143. [PMID: 23533526 PMCID: PMC3595678 DOI: 10.1155/2013/828143] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 12/28/2012] [Accepted: 01/23/2013] [Indexed: 12/21/2022]
Abstract
This study investigated the anticancer effects of subamolide A (Sub-A), isolated from Cinnamomum subavenium, on human nonsmall cell lung cancer cell lines A549 and NCI-H460. Treatment of cancer cells with Sub-A resulted in decreased cell viability of both lung cancer cell lines. Sub-A induced lung cancer cell death by triggering mitotic catastrophe with apoptosis. It triggered oxidant stress, indicated by increased cellular reactive oxygen species (ROS) production and decreased glutathione level. The elevated ROS triggered the activation of ataxia-telangiectasia mutation (ATM), which further enhanced the ATF3 upregulation and subsequently enhanced p53 function by phosphorylation at Serine 15 and Serine 392. The antioxidant, EUK8, significantly decreased mitotic catastrophe by inhibiting ATM activation, ATF3 expression, and p53 phosphorylation. The reduction of ATM and ATF3 expression by shRNA decreased Sub-A-mediated p53 phosphorylation and mitotic catastrophe. Sub-A also caused a dramatic 70% reduction in tumor size in an animal model. Taken together, cell death of lung cancer cells in response to Sub-A is dependent on ROS generation, which triggers mitotic catastrophe followed by apoptosis. Therefore, Sub-A may be a novel anticancer agent for the treatment of nonsmall cell lung cancer.
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