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Zhang ZQ, Zhang ZK, Wang YH, Chen BT, He FK, Wang YL, Shu T, Huang YY. Trivalent Phosphine-Catalyzed [4+1] Spiro-annulation Reaction Using Allenyl Imide and Methylene Cyclocompounds. J Org Chem 2024; 89:6607-6614. [PMID: 38624206 DOI: 10.1021/acs.joc.4c00388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
The trivalent phosphine-catalyzed [4+1] spiro-annulation reaction of allenyl imide and activated methylene cyclocompounds has been developed for the construction of various spiro-2-cyclopenten-1-ones. Oxindoles, 3-isochromanones, and 2-indanones are selected as 1C synthons to capture the in situ-generated bis-electrophilic α,β-unsaturated ketenyl phosphonium intermediate, affording the corresponding monospiro- and bispiro-cyclopentenones in good to excellent yields (≤91%) under mild conditions. The primary attempt at asymmetric catalysis using monophosphine (R)-SITCP provides promising enantioselectivity (45% ee). A plausible reaction mechanism is also proposed.
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Affiliation(s)
- Zi-Qiu Zhang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Zhen-Kai Zhang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Yu-Hao Wang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Bo-Ting Chen
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Feng-Kai He
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Yi-Long Wang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Tao Shu
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Yi-Yong Huang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
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Zhou M, Zhou J, Peng X, Duan F, Gao Y, Meng X, Ruan H. Isomeric eremophilane lactones from the whole plant of Parasenecio albus and their cytotoxic and immunosuppressive activities. PHYTOCHEMISTRY 2023; 214:113821. [PMID: 37567352 DOI: 10.1016/j.phytochem.2023.113821] [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: 05/05/2023] [Revised: 08/03/2023] [Accepted: 08/07/2023] [Indexed: 08/13/2023]
Abstract
Ten previously unreported eremophilane lactones (parasalbolides A-J), including three pairs of C-10 epimers (parasalbolides A and G, B and H, and F and I, respectively), were isolated and identified from the whole plant of Parasenecio albus. Their structures were established on the basis of the HRESIMS and NMR spectroscopic analyses, combined with the comparison of the ECD spectra. The absolute configuration of parasalbolide A was confirmed by single-crystal X-ray diffraction using Cu Kα radiation. Parasalbolides A-J represent the first examples of 1,2,10-trioxygenated eremophila-7(11),8-dien-12,8-olides. The cytotoxic and immunosuppressive activities of selected isolates were evaluated and the (10S)-eremophilane lactones (parasalbolides A, B, and F) showed more potent activities than the (10R)-ones (parasalbolides G, H, and I).
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Affiliation(s)
- Ming Zhou
- 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; Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, People's Republic of China
| | - Jia Zhou
- 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
| | - Xiaogang Peng
- 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
| | - Fangfang Duan
- 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
| | - Ying Gao
- 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
| | - Xianggao Meng
- College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
| | - Hanli Ruan
- 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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Jin A, Duan F, Chang J, Liu S, Ruan H. Chlorinated bisabolene sesquiterpenoids from the whole plant of Parasenecio rubescens. Fitoterapia 2021; 156:105093. [PMID: 34856341 DOI: 10.1016/j.fitote.2021.105093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 12/01/2022]
Abstract
Four new chlorinated bisabolene-type sesquiterpenoids (1-4) were isolated during the phytochemical investigation of an acetone extract of the whole plant of Parasenecio rubescens. The structures of 1-4 were determined by analysis of their HRESIMS and NMR spectroscopic data, and the absolute configuration of 1 was established through single-crystal X-ray diffraction. All isolates were evaluated for their cytotoxicity against three cancer cell lines (B16 mouse melanoma, HepG2 human hepatocellular carcinoma, and MCF7 human breast adenocarcinoma), as well as their antimicrobial effects against Staphylococcus aureus, Escherichia coli, and Monilia albicans. As a result, compounds 1-4 displayed a certain degree of antimicrobial activities.
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Affiliation(s)
- An Jin
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Hangkonglu 13, Wuhan 430030, China; School of Pharmaceutical Sciences, Hunan University of Medicine, Jinxinanlu 492, Huaihua 418000, China
| | - Fangfang Duan
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Hangkonglu 13, Wuhan 430030, China
| | - Jinling Chang
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Hangkonglu 13, Wuhan 430030, China
| | - Si Liu
- School of Pharmaceutical Sciences, Hunan University of Medicine, Jinxinanlu 492, Huaihua 418000, China
| | - Hanli Ruan
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Hangkonglu 13, Wuhan 430030, China.
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Zhou M, Duan F, Gao Y, Peng X, Meng X, Ruan H. Eremophilane sesquiterpenoids from the whole plant of Parasenecio albus with immunosuppressive activity. Bioorg Chem 2021; 115:105247. [PMID: 34411979 DOI: 10.1016/j.bioorg.2021.105247] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/21/2021] [Accepted: 08/03/2021] [Indexed: 11/27/2022]
Abstract
Fifteen new highly oxygenated eremophilane sesquiterpenoids, parasubolides A-O (1-15), were obtained from the whole plant of Parasenecio albus. The structures of 1-15 were elucidated based on the interpretation of NMR and HRESIMS data, along with experimental electronic circular dichroism (ECD) and single-crystal X-ray diffraction analysis. Compounds 1-6, and 9-14 represent the first class of 1,2,10-trioxygenated eremophilane lactones. Selected isolates were evaluated for their immunosuppressive activities. Compounds 4, 5, and 12 exhibited moderate inhibition against LPS-induced B-cell proliferation with IC50 values of 23.1, 33.8, and 26.6 μM, respectively.
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Affiliation(s)
- Ming Zhou
- 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; Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, People's Republic of China
| | - Fangfang Duan
- 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
| | - Ying Gao
- 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
| | - Xiaogang Peng
- 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
| | - Xianggao Meng
- College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
| | - Hanli Ruan
- 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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Zhou J, Gao Y, Chang JL, Yu HY, Chen J, Zhou M, Meng XG, Ruan HL. Resorcylic Acid Lactones from an Ilyonectria sp. JOURNAL OF NATURAL PRODUCTS 2020; 83:1505-1514. [PMID: 32323537 DOI: 10.1021/acs.jnatprod.9b01167] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Twelve new resorcylic acid lactones (RALs) including three new 16-membered RALs (1a, 1b and 2), eight new 14-membered RALs (3-10), and one new 12-membered RAL (11), along with five known 14-membered RALs (12-16), were identified from the fermentation of the soil-derived fungus Ilyonectria sp. sb65. Their structures were established by detailed analyses of 1D and 2D NMR, HRESIMS, and X-ray diffraction crystallography. All new compounds were evaluated for their cytotoxic effects against three human cancer cell lines, along with their potential as TRAIL sensitizers in TRAIL-resistant A549 human lung adenocarcinoma cells and their in vitro immunosuppressive effects against ConA-induced T-cell and LPS-induced B-cell proliferation.
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Affiliation(s)
- Jia Zhou
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Ying Gao
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Jin-Ling Chang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Heng-Yi Yu
- Department of Pharmacy, Tongji Hospital Affiliated Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Juan Chen
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Ming Zhou
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Xiang-Gao Meng
- College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
| | - Han-Li Ruan
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
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Liu YF, Yu SS. Survey of natural products reported by Asian research groups in 2018. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2019; 21:1129-1150. [PMID: 31736363 DOI: 10.1080/10286020.2019.1684474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/18/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
The new natural products reported in 2018 in peer-reviewed articles in journals with good reputations were reviewed and analyzed. The advances made by Asian research groups in the field of natural products chemistry in 2018 were summarized. Compounds with unique structural features and/or promising bioactivities originating from Asian natural sources were discussed based on their structural classification.
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Affiliation(s)
- Yan Fei Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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