1
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Nallappan S, Lapinskaite R, Hájíček J, Kunák D, Čambal P, Nečas D, Císařová I, Atalay HN, Tumer TB, Tarábek J, Schwarzová-Pecková K, Rycek L. The Biomimetic Synthesis of Polyarylated Fluorenes, Relevant to Selaginellaceae Polyphenols, Leading to the Spontaneous Formation of Stable Radicals. Chempluschem 2024; 89:e202300410. [PMID: 37943550 DOI: 10.1002/cplu.202300410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/31/2023] [Accepted: 11/08/2023] [Indexed: 11/10/2023]
Abstract
This work reports a biomimetic synthesis of polyarylated fluorene derivatives. The molecules are formed via intramolecular electrophilic aromatic substitution, resembling a cyclization leading towards the natural selaginpulvilins from selaginellins. The scope of the reaction was investigated, and the products were obtained in 60-95 % yields. Some of the compounds decompose to a stable radical. We investigated the nature and the origin of the radical using experimental methods, including EPR or electrochemical measurements, as well as theoretical methods, such as DFT calculations. Based on our observations, we hypothesize, that phenoxy radicals are formed in the first instance, which however undergo internal rearrangement to thermodynamically more stable carbon-centered radicals. The preliminary data also show the cytotoxic properties of some of the molecules.
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Affiliation(s)
- Sundaravelu Nallappan
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
| | - Ringaile Lapinskaite
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
- Department of Organic Chemistry, Center for Physical Sciences and Technology, Akademijos g. 7, Vilnius, 08412, Lithuania
| | - Josef Hájíček
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
| | - Dominik Kunák
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
| | - Peter Čambal
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
| | - David Nečas
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
| | - Hazal Nazlıcan Atalay
- Department of Molecular Biology and Genetics, Faculty of Arts and Science, Canakkale Onsekiz Mart University, Canakkale, 17020, Turkey
| | - Tugba B Tumer
- Department of Molecular Biology and Genetics, Faculty of Arts and Science, Canakkale Onsekiz Mart University, Canakkale, 17020, Turkey
| | - Ján Tarábek
- Institute of Organic Chemistry and Biochemistry, Academy of Science of the Czech Republic, Flemingovo nám. 2, 166 10, Prague, Czech Republic
| | - Karolina Schwarzová-Pecková
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
| | - Lukas Rycek
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 00, Prague, Czech Republic
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2
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Wen J, Sha DM, He XY, Tian YH, Ni SC, He B, Liu Y, Yan XJ. Selaginellin derivatives from Selaginella tamariscina and evaluation for anti-breast cancer activity. PHYTOCHEMISTRY 2024; 217:113919. [PMID: 37952708 DOI: 10.1016/j.phytochem.2023.113919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023]
Abstract
A phytochemical investigation of Selaginella tamariscina led to the isolation of 17 selaginellin derivatives. Their inhibitory activities against breast cancer cells were screened, and preliminary structure-activity relationships were also established. Among them, dimeric selaginellin 17 showed potential activity against MDA-MB-231 cells with an IC50 value of 3.2 ± 0.1 μM, corresponding to 4-fold higher potency than the reference compound 5-FU (IC50 14.8 ± 0.2 μM). Mechanistic studies indicated that 17 could cause G2/M phase arrest in MDA-MB-231 cells and induce apoptosis accompanied by increased ROS levels.
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Affiliation(s)
- Jing Wen
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China; School of Pharmacy, Sichuan College of Traditional Chinese Medicine, Mianyang, 621000, China
| | - Dong-Mei Sha
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China
| | - Xiao-Yong He
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China
| | - Yu-Han Tian
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China
| | - Shuai-Cong Ni
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China
| | - Bin He
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China
| | - Yuan Liu
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China
| | - Xin-Jia Yan
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, 610225, China.
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3
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Long J, Mao Q, Peng Y, Liu L, Hong Y, Xiang H, Ma M, Zou H, Kuang J. Three New Benzophenone Derivatives from Selaginella tamariscina. Molecules 2023; 28:4582. [PMID: 37375139 DOI: 10.3390/molecules28124582] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 05/31/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Six compounds including three new benzophenones, selagibenzophenones D-F (1-3), two known selaginellins (4-5) and one known flavonoid (6), were isolated from Selaginella tamariscina. The structures of new compounds were established by 1D-, 2D-NMR and HR-ESI-MS spectral analyses. Compound 1 represents the second example of diarylbenzophenone from natural sources. Compound 2 possesses an unusual biphenyl-bisbenzophenone structure. Their cytotoxicity against human hepatocellular carcinoma HepG2 and SMCC-7721 cells and inhibitory activities on lipopolysaccharide-induced nitric oxide (NO) production in RAW264.7 cells were evaluated. Compound 2 showed moderate inhibitory activity against HepG2 and SMCC-7721 cells, and compounds 4 and 5 showed moderate inhibitory activity to HepG2 cells. Compounds 2 and 5 also exhibited inhibitory activities on lipopolysaccharide-induced nitric oxide (NO) production.
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Affiliation(s)
- Jiayin Long
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Qingqing Mao
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Yujie Peng
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Lei Liu
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Yin Hong
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Honglin Xiang
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Ming Ma
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research of Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Hui Zou
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Junwei Kuang
- Key Laboratory of Phytochemical R&D of Hunan Province, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research of Ministry of Education, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
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4
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Lapinskaite R, Atalay HN, Malatinec Š, Donmez S, Cinar ZO, Schwarz PF, Perhal AF, Císařová I, Labanauskas L, Karpiński TM, Dirsch VM, Tumer TB, Rycek L. Synthesis of Selagibenzophenone A and Its Derivatives for Evaluation of Their Antiproliferative, RORγ Inverse Agonistic, and Antimicrobial Effect**. ChemistrySelect 2023. [DOI: 10.1002/slct.202204816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Ringaile Lapinskaite
- Department of Organic Chemistry Faculty of Science Charles University Hlavova 8 128 00 Praha 2 Czech Republic
- Department of Organic Chemistry Center for Physical Sciences and Technology Akademijos g. 7 Vilnius 08412 Lithuania
| | - Hazal Nazlıcan Atalay
- Graduate Program of Molecular Biology and Genetics School of Graduate Studies Canakkale Onsekiz Mart University Canakkale 17020 Turkey
| | - Štefan Malatinec
- Department of Organic Chemistry Faculty of Science Charles University Hlavova 8 128 00 Praha 2 Czech Republic
| | - Serhat Donmez
- Graduate Program of Molecular Biology and Genetics School of Graduate Studies Canakkale Onsekiz Mart University Canakkale 17020 Turkey
| | - Zeynep Ozlem Cinar
- Graduate Program of Molecular Biology and Genetics School of Graduate Studies Canakkale Onsekiz Mart University Canakkale 17020 Turkey
| | - Patrik F. Schwarz
- Department of Pharmaceutical Sciences University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
| | - Alexander F. Perhal
- Department of Pharmaceutical Sciences University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
| | - Ivana Císařová
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 128 00 Praha 2 Czech Republic
| | - Linas Labanauskas
- Department of Organic Chemistry Center for Physical Sciences and Technology Akademijos g. 7 Vilnius 08412 Lithuania
| | - Tomasz M. Karpiński
- Chair and Department of Medical Microbiology Poznań University of Medical Sciences Wieniawskiego 3 61-712 Poznań Poland
| | - Verena M. Dirsch
- Department of Pharmaceutical Sciences University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
| | - Tugba Boyunegmez Tumer
- Department of Molecular Biology and Genetics Faculty of Arts and Science Canakkale Onsekiz Mart University Canakkale 17020 Turkey
| | - Lukas Rycek
- Department of Organic Chemistry Faculty of Science Charles University Hlavova 8 128 00 Praha 2 Czech Republic
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5
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Lee H, Kim SY, Lee SW, Kwak S, Li H, Piao R, Park HY, Choi S, Jeong TS. Amentoflavone-Enriched Selaginella rossii Protects against Ultraviolet- and Oxidative Stress-Induced Aging in Skin Cells. LIFE (BASEL, SWITZERLAND) 2022; 12:life12122106. [PMID: 36556471 PMCID: PMC9787533 DOI: 10.3390/life12122106] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Selaginellaceae plants are used in cosmetics to limit skin aging. This study is the first to investigate the anti-aging effects of Selaginella rossii (SR) on ultraviolet B (UVB)- and oxidative stress-induced skin cells. The 95% ethanol extract of Selaginella rossii (SR95E) contained much higher amounts of amentoflavone (AMF), an active compound, than other Selaginellaceae plants and was more effective in inhibiting matrix metalloproteinase (MMP)-1 expression in CCD-986sk fibroblasts. SR95E significantly decreased UVB-induced MMP-1, MMP-2, MMP-3 and MMP-9 expression and enhanced procollagen type I C-peptide content and mRNA expression of collagen type I alpha (COL1A)1 and COL1A2 in CCD-986sk fibroblasts. In HaCaT keratinocytes, SR95E treatment also dose-dependently decreased UVB-induced MMP-1 concentration and MMP-1, MMP-2, MMP-3 and MMP-9 mRNA expression. Moreover, SR95E treatment markedly inhibited UVB-induced c-Jun N-terminal kinase and p38 mitogen-activated protein kinase signaling and nuclear factor kappa-B signaling in HaCaT cells. Furthermore, SR95E and AMF markedly regulated the 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH)-induced expression of cellular senescence-related markers, including p16, p21 and LMNB1, in HaCaT cells. Overall, this study indicates that SR may have potential as a functional material on preventing UVB- and AAPH-induced skin aging and wrinkles.
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Affiliation(s)
- Hwa Lee
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Soo-Yong Kim
- International Biological Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Sang Woo Lee
- International Biological Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Sehan Kwak
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Hulin Li
- Department of Agronomy, Yanbian University Agriculture College, Yanji 133000, China
| | - Renzhe Piao
- Department of Agronomy, Yanbian University Agriculture College, Yanji 133000, China
| | - Ho-Yong Park
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Sangho Choi
- International Biological Material Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- Correspondence: (S.C.); (T.-S.J.); Tel.: +82-42-879-8340 (S.C.); +82-42-860-4558 (T.-S.J.); Fax: +82-42-861-8349 (S.C.); +82-42-861-2675 (T.-S.J.)
| | - Tae-Sook Jeong
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- Correspondence: (S.C.); (T.-S.J.); Tel.: +82-42-879-8340 (S.C.); +82-42-860-4558 (T.-S.J.); Fax: +82-42-861-8349 (S.C.); +82-42-861-2675 (T.-S.J.)
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6
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Chen M, Wang S, Cheng H, Wan D, Lu R, Yang X. Seladoeflavones G‐I, Three New flavonoids from
Selaginella doederleinii
Hieron. ChemistrySelect 2022. [DOI: 10.1002/slct.202202242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Min‐Yu Chen
- College of Pharmacy Guangxi University of Chinese Medicine Nanning Guangxi 530200 China
| | - Si.‐Si Wang
- School of Pharmaceutical Sciences South-Central Minzu University Wuhan Hubei 430074 China
| | - Hai‐Tao Cheng
- School of Pharmaceutical Sciences South-Central Minzu University Wuhan Hubei 430074 China
| | - Ding‐Rong Wan
- School of Pharmaceutical Sciences South-Central Minzu University Wuhan Hubei 430074 China
| | - Ru‐Mei Lu
- College of Pharmacy Guangxi University of Chinese Medicine Nanning Guangxi 530200 China
| | - Xin‐Zhou Yang
- College of Pharmacy Guangxi University of Chinese Medicine Nanning Guangxi 530200 China
- School of Pharmaceutical Sciences South-Central Minzu University Wuhan Hubei 430074 China
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7
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Zhang W, Li WB, Zou H, Xu KP, Long HP, Li J, Huang Q, Zou ZX, Wang YK, Tan GS. Screening and characterizing the quality markers of Selaginella tamariscina (P. Beauv.) Spring using metabonomics and molecular networking. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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8
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Zhou Y, Zeng HL, Wen XY, Jiang L, Fu CH, Hu YB, Lei XX, Zhang L, Yu X, Yang SY, Huang LH, Xiang H, Huang JH, Chen J, Lei L, Zeng QH. Selaginellin Inhibits Melanogenesis via the MAPK Signaling Pathway. JOURNAL OF NATURAL PRODUCTS 2022; 85:838-845. [PMID: 35290062 DOI: 10.1021/acs.jnatprod.1c00971] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hyperpigmented skin diseases such as melasma, freckles, and melanosis usually mar the appearance of patients. Traditional herbal medicines are highly accepted in inhibiting skin pigmentation, with advantages of high efficiency, low cost, and low side effects. Selaginellin (SEL), one of the active compounds of selaginella, has been proved to be exhibit antineoplastic, antioxidant, antisenescence, and antiapoptosis activities. In this study, we found that SEL can inhibit melanogenesis in vitro and in vivo. A mechanism study found that SEL inhibits melanogenesis through inhibiting the mitogen-activated protein kinase (MAPK) signaling pathway, then down-regulating the expression of microphthalmia-associated transcription factor (MITF) and downstream genes tyrosinase (TYR) and tyrosinase-related protein 2 (TYRP2). UVB-activated paracrine function of fibroblasts and keratinocytes promotes melanogenesis of melanocytes. Interestingly, SEL antagonizes UVB-activated paracrine function of fibroblasts and keratinocytes. These findings indicate that SEL can be a potential whitening compound to inhibit melanogenesis.
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Affiliation(s)
- Ying Zhou
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Hong-Liang Zeng
- Institute of Chinese Materia Medica, Hunan Academy of Chinese Medicine, No. 8 Yuehua Road, Yuelu District, Changsha 410013, China
| | - Xin-Yue Wen
- Institute of Chinese Materia Medica, Hunan Academy of Chinese Medicine, No. 8 Yuehua Road, Yuelu District, Changsha 410013, China
| | - Ling Jiang
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Chu-Han Fu
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Yi-Bo Hu
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Xin-Xin Lei
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Li Zhang
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Xing Yu
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Si-Yu Yang
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Li-Hua Huang
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Hong Xiang
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Jin-Hua Huang
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Jing Chen
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Li Lei
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
| | - Qing-Hai Zeng
- Department of Dermatology, Third Xiangya Hospital, Central South University, No. 138 Tongzipo Road, Yuelu District, Changsha 410013, China
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9
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Amentoflavone-Enriched Selaginella rossii Warb. Suppresses Body Weight and Hyperglycemia by Inhibiting Intestinal Lipid Absorption in Mice Fed a High-Fat Diet. Life (Basel) 2022; 12:life12040472. [PMID: 35454963 PMCID: PMC9024644 DOI: 10.3390/life12040472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 11/17/2022] Open
Abstract
Many Selaginellaceae species are used as traditional medicines in Asia. This study is the first to investigate the anti-obesity and anti-diabetic effects of Selaginella rossii (SR) in high-fat diet (HFD)–fed C57BL/6J mice. Seven-day oral administration of ethanol extract (100 mg/kg/day) or ethyl acetate (EtOAc) extract (50 mg/kg/day) from SR improved oral fat tolerance by inhibiting intestinal lipid absorption; 10-week long-term administration of the EtOAc extract markedly reduced HFD-induced body weight gain and hyperglycemia by reducing adipocyte hypertrophy, glucose levels, HbA1c, and plasma insulin levels. Treatment with SR extracts reduced the expression of intestinal lipid absorption-related genes, including Cd36, fatty acid-binding protein 6, ATP-binding cassette subfamily G member 8, NPC1 like intracellular cholesterol transporter 1, and ATP-binding cassette subfamily A member 1. In addition, the EtOAc extract increased the expression of protein absorption–related solute carrier family genes, including Slc15a1, Slc8a2, and Slc6a9. SR extracts reduced HFD-induced hepatic steatosis by suppressing fatty acid transport to hepatocytes and hepatic lipid accumulation. Furthermore, amentoflavone (AMF), the primary compound in SR extracts, reduced intestinal lipid absorption by inhibiting fatty acid transport in HFD-fed mice. AMF-enriched SR extracts effectively protected against HFD-induced body weight gain and hyperglycemia by inhibiting intestinal lipid absorption.
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10
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Kunák D, Mateus M, Rycek L. Synthesis and Structure Confirmation of Selagibenzophenone C. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dominik Kunák
- Charles University Faculty of Science: Univerzita Karlova Prirodovedecka fakulta Department of Organic Chemistry CZECH REPUBLIC
| | - Miguel Mateus
- Charles University Faculty of Science: Univerzita Karlova Prirodovedecka fakulta Department of Organic Chemistry CZECH REPUBLIC
| | - Lukas Rycek
- Charles University Faculty of Science: Univerzita Karlova Prirodovedecka fakulta Departmet of Organic Chemistry Hlavova 8 128 40 Prague CZECH REPUBLIC
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11
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Pankhade YA, Pandey R, Fatma S, Ahmad F, Anand RV. TfOH-Catalyzed Intramolecular Annulation of 2-(Aryl)-Phenyl-Substituted p-Quinone Methides under Continuous Flow: Total Syntheses of Selaginpulvilin I and Isoselagintamarlin A. J Org Chem 2022; 87:3363-3377. [PMID: 35107013 DOI: 10.1021/acs.joc.1c02980] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this article, we describe a convenient method to access 9-aryl fluorene derivatives through a TfOH-catalyzed intramolecular 1,6-conjugate arylation of 2-(aryl)-phenyl-substituted p-quinone methides (QMs) under continuous flow using the microreaction technique. This method was found to be very effective for most of the p-QMs, and the corresponding 9-aryl fluorene derivatives were obtained in moderate to excellent yields. Moreover, this protocol was further elaborated to the first total syntheses of selaginpulvilin I and isoselagintamarlin A.
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Affiliation(s)
- Yogesh A Pankhade
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Rajat Pandey
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Shaheen Fatma
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Feroz Ahmad
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli, Punjab 140306, India
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12
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Bailly C. The traditional and modern uses of Selaginella tamariscina (P.Beauv.) Spring, in medicine and cosmetic: Applications and bioactive ingredients. JOURNAL OF ETHNOPHARMACOLOGY 2021; 280:114444. [PMID: 34302944 DOI: 10.1016/j.jep.2021.114444] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 07/08/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Extracts of the plant Selaginella tamariscina (P.Beauv.) Spring (spike moss) are used for a long time in Asia, for the treatment of multiple diseases and conditions. Aqueous and alcoholic leave extracts are used by local communities. In China, the plant (Juan bai) is listed on the Pharmacopoeia. In South Korea, the use of this plant (Kwon Baek) is mentioned in the book Dongui-Bogam (Heo Jun 1613), at the origin of the Hyungsang medicine. S. tamariscina is traditionally used in Vietnam (mong lung rong), Thailand (dok hin), Philippines (pakong-tulog) and other Asian countries. AIM OF THE STUDY To provide an analysis of the multiple traditional and current uses of S. tamariscina extracts (STE) in the field of medicine and cosmetic. The review is also intended at identifying the main natural products at the origin of the many pharmacological properties reported with these extracts (anti-inflammatory, antioxidant, antidiabetic, antibacterial, antiallergic, anticancer effects). METHODS Extensive database retrieval, such as SciFinder and PubMed, was performed by using keywords like " Selaginella tamariscina", "spike moss", "Selaginellaceae ". Relevant textbooks, patents, reviews, and digital documents were consulted to collate all available scientific literature and to provide a complete science-based survey of the topic. RESULTS Different solvents and methods are used to prepare STE. The process can largely modify the natural product content and properties of the extracts. STE display a range of pharmacological effects, useful to treat metabolic disorders, several inflammatory diseases and various cancers. A specific carbonized extract (S. tamariscina carbonisatus) has shown hemostatic effects, whereas standard STE can promote blood circulation. Many patented STE-containing cosmetic preparations are reviewed here. Several biflavonoids (chiefly amentoflavone) and phenolic compounds (selaginellin derivatives) are primarily responsible for the observed pharmacological properties. Potent inhibitors of protein tyrosine phosphatase 1 B (PTP1B), phosphodiesterase-4 (PDE4), and repressor of pro-inflammatory cytokines expression have been identified from STE. CONCLUSION The traditional use of STE supports the research performed with this plant. There are robust experimental data, based on in vitro and in vivo models, documenting the use of STE to treat type 2 diabetes, several inflammatory diseases, and some cancers (in combination with standard chemotherapy). Selaginella tamariscina (P.Beauv.) is a prime reservoir for amentoflavone, and many other bioactive natural products. The interest of the plant in medicine and cosmetic is amply justified.
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Fujiwara K, Itagaki T, Tokiwano T. Total synthesis of selaginellin A. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Cross-Coupling as a Key Step in the Synthesis and Structure Revision of the Natural Products Selagibenzophenones A and B. Catalysts 2021. [DOI: 10.3390/catal11060708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Selagibenzophenone A (1) and its isomer selagibenzophenone B (2) were recently described as natural products from Selaginella genus plants with PDE4 inhibitory activity. Herein, we report the first total syntheses of both compounds. By comparing spectroscopic data of the synthetic compounds with reported data for the isolated material, we demonstrate that the structure of one of the two natural products was incorrectly assigned, and that in fact isolated selagibenzophenone A and selagibenzophenone B are identical compounds. The synthetic strategy for both 1 and 2 is based on a cross-coupling reaction and on the addition of organometallic species to assemble the framework of the molecules. Identifying a suitable starting material with the correct substitution pattern is crucial because its pattern is reflected in that of the targeted compounds. These syntheses are finalized via global deprotection. Protecting the phenols as methoxy groups provides the possibility for partial control over the selectivity in the demethylation thanks to differences in the reactivity of the various methoxy groups. Our findings may help in future syntheses of derivatives of the biologically active natural product and in understanding the structure–activity relationship.
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