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Xun L, Zhang Z, Zhou Y, Qin S, Fu S, Liu B. Stereodivergent Construction of [5,5]-Oxaspirolactones of Phainanoids. J Org Chem 2023; 88:3987-3991. [PMID: 36883240 DOI: 10.1021/acs.joc.2c03091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
A stereodivergent synthesis of [5,5]-oxaspirolactones of phainanoids is presented herein. Through precisely tuning the inherent substitution differences on cyclopropanol, a palladium-catalyzed cascade carbonylative lactonization enables the stereodivergent synthesis of [5,5]-oxaspirolactones of phainanoids.
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Affiliation(s)
- Lizhi Xun
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Zhijiang Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Song Qin
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Bo Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
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Isoprenyl phenolic ethers from the termite nest-derived medicinal fungus Xylaria fimbriata. J Food Drug Anal 2018; 27:111-117. [PMID: 30648564 PMCID: PMC9298632 DOI: 10.1016/j.jfda.2018.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/20/2018] [Accepted: 05/24/2018] [Indexed: 01/01/2023] Open
Abstract
Seven new isoprenyl phenolic ethers, namely fimbriethers A–G (1–7), were isolated from the fermented broth of the termite nest-derived medicinal fungus Xylaria fimbriata YMJ491. Their structures were determined by spectroscopic data analysis and compared with those reported. The effects of all the isolates at a concentration of 100 μM on the inhibition of nitric oxide (NO) production in lipopolysaccharide (LPS)-induced murine macrophage RAW 264.7 cells were evaluated, and all of them exhibited NO production inhibitory activity with Emax values ranging from 4.6 ± 2.0% to 49.7 ± 0.5% without significant cytotoxicity. In addition, these seven compounds did not alter phenylephrine-induced vasocontraction in isolated intact thoracic aortic rings from C57BL/6J mouse, indicating 1–7 were not involved in the regulation of endothelial NOS-mediated NO production.
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Gadetskaya AV, Mohamed SM, Tarawneh AH, Mohamed NM, Ma G, Ponomarev BN, Zhusupova GE, Cantrell CL, Cutler SJ, Ross SA. Phytochemical characterization and biological activity of secondary metabolites from three Limonium species. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1973-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Lee CL, Lee SL, Chen CJ, Chen HC, Kao MC, Liu CH, Chen JY, Lai YT, Wu YC. Characterization of Secondary Metabolites from Purple Ipomoea batatas Leaves and Their Effects on Glucose Uptake. Molecules 2016; 21:molecules21060745. [PMID: 27338312 PMCID: PMC6273172 DOI: 10.3390/molecules21060745] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 05/28/2016] [Accepted: 06/03/2016] [Indexed: 11/16/2022] Open
Abstract
Ipomoea batatas has long been used in folk medicine for the treatment of hyperglycemia or as a food additive for the prevention of type 2 diabetes. However, neither the plant extract nor its active components have been evaluated systematically. In this work four crude extracts, including n-hexane- (IBH), 95% MeOH- (IBM), n-BuOH- (IBB), and H₂O-soluble (IBW) fractions, were prepared by fractionation of a methanolic extract of purple I. batatas leaves. Twenty-four pure compounds 1-24 were then isolated by various chromatographic techniques and their structures identified from NMR and MS data. Glucose uptake assays in differentiated 3T3-L1 adipocytes and rat primary hepatocytes, as well as western blot analysis, were carried out to evaluate the antidiabetic activity of this species. The IBH crude fraction, with methyl decanoate (22) as a major and active compound, showed the greatest effect on glucose uptake, most likely via activation of Glut4 and regulation of the PI3K/AKT pathway. Quercetin 3-O-β-d-sophoroside (1), quercetin (3), benzyl β-d-glucoside (10), 4-hydroxy-3-methoxybenzaldehyde (12), and methyl decanoate (22) could be important components contributing to the antidiabetic effects. We conclude that purple I. batatas leaves have potential as an antidiabetic plant source and the active constituents 1, 3, 10, 12, and 22 are promising lead candidates for future investigation.
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Affiliation(s)
- Chia-Lin Lee
- Department of Cosmeceutics, China Medical University, Taichung 40402, Taiwan.
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40447, Taiwan.
| | - Shou-Lun Lee
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan.
| | - Chao-Jung Chen
- Graduate Institute of Integrated Medicine, China Medical University, Taichung 40402, Taiwan.
- Proteomics Core Laboratory, Department of Medical Research, China Medical University Hospital, Taichung 40447, Taiwan.
| | - Hsin-Chun Chen
- Department of Cosmeceutics, China Medical University, Taichung 40402, Taiwan.
| | - Ming-Ching Kao
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan.
- Department of Biochemistry, National Defense Medical Center, Taipei 11466, Taiwan.
| | - Chuan-Hao Liu
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40447, Taiwan.
| | - Jau-Yang Chen
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40447, Taiwan.
| | - Yen-Ting Lai
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan.
| | - Yang-Chang Wu
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40447, Taiwan.
- School of Pharmacy, China Medical University, Taichung 40402, Taiwan.
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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Kotturi SR, Somanadhan B, Ch’ng JH, Tan KSW, Butler MS, Lear MJ. Diverted total synthesis of falcitidin acyl tetrapeptides as new antimalarial leads. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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