1
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Wang M, Jia Y, Wu F, Li Z, Shao L, Chen X. Asymmetric synthesis of penostatins A-D from L-ascorbic acid. Org Biomol Chem 2024; 22:7649-7658. [PMID: 39190450 DOI: 10.1039/d4ob01186d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
The first asymmetric synthesis of (-)-penostatins B and D and the practical synthesis of (+)-penostatins A and C have been accomplished through a flexible strategy. The features of the synthesis are a BF3·OEt2-mediated Diels-Alder reaction of chiral dienophiles and methylcyclopentadienes with high chemo-, regio-, and stereoselectivity, followed by ozonolysis to install the common trisubstituted cyclopentane intermediate, and a hetero-Diels-Alder reaction with easily tunable facial selectivity, followed by sulfonate elimination to construct both enantiomeric tricyclic systems for penostatins A/C and B/D, respectively.
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Affiliation(s)
- Maolin Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Yuanliang Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Folei Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Zupei Li
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Lijun Shao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
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2
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Wang W, Ma F, Cheung YT, Zeng G, Zhou Y, Chen Z, Liang L, Luo T, Tong R. Marine Alkaloid Lepadins E and H Induce Ferroptosis for Cancer Chemotherapy. J Med Chem 2023; 66:11201-11215. [PMID: 37578947 DOI: 10.1021/acs.jmedchem.3c00659] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Induction of ferroptosis emerges as an effective method for cancer treatment. With massive efforts to elucidate the ferroptosis mechanism, the development of new ferroptosis inducers proceeds rather slowly, with only a few small molecules identified. Herein, we report our discovery of marine alkaloid lepadins E and H as a new class of ferroptosis inducers. Our in vitro studies show that lepadins E and H exhibit significant cytotoxicity, promote p53 expression, increase ROS production and lipid peroxides, reduce SLC7A11 and GPX4 levels, and upregulate ACSL4 expression, all of which consistently support induction of ferroptosis through the classical p53-SLC7A11-GPX4 pathway. Our animal model study of lepadin H confirms its in vivo antitumor efficacy with negligible toxicity to normal organs. This work elucidates the mode of action of lepadins (E and H) and verifies their in vivo efficacy as a new class of ferroptosis inducers for anticancer therapy with translational potential.
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Affiliation(s)
- Wenjun Wang
- Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong 999077, China
- Institute of Molecular Physiology, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518055, China
| | - Foqing Ma
- Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong 999077, China
| | - Yuen Tsz Cheung
- Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong 999077, China
| | - Guihua Zeng
- Institute of Molecular Physiology, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518055, China
| | - Yiqin Zhou
- Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong 999077, China
| | - Zijing Chen
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Lixin Liang
- Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong 999077, China
| | - Tuoping Luo
- Institute of Molecular Physiology, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518055, China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Rongbiao Tong
- Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong 999077, China
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3
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Jia J, Wang Y, Zhou Q, Chen R, Chen X. Formal Synthesis of Ecteinascidin 743 from N-Cbz-l-tyrosine. J Org Chem 2023. [PMID: 37463501 DOI: 10.1021/acs.joc.3c00931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
A formal total synthesis of ecteinascidin 743 and lurbinectedin is achieved. Key features involve a Pictet-Spengler cyclization coupling of the tetrahydroisoquinoline and phenylalaninol moieties prepared by a common route with high yield and selectivity, a Parikh-Doering oxidation with good chemoselectivity and functionality tolerance, and a light-mediated A-ring elaboration of pentacyclic methoxyquinone substrates. By the approach, the known advanced intermediate (4-step conversion to Et-743) can be obtained conveniently in 21 total steps from N-Cbz-l-tyrosine.
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Affiliation(s)
- Junhao Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Yue Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Qin Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | | | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
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4
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Jia Y, Wang M, Wu F, Chen X. Enantioselective Total Synthesis of (+)-Penostatins A and C. Org Lett 2023; 25:1941-1945. [PMID: 36926890 DOI: 10.1021/acs.orglett.3c00485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
A stereoselective and column-economic approach to (+)-penostatins A and C has been developed. The multisubstituted A ring and B/C rings in their unique tricyclic framework are constructed through a Diels-Alder reaction/ozonolysis sequence and an exo intramolecular hetero-Diels-Alder reaction with high chemo-, regio-, and stereoselectivity. Using this route, (+)-penostatins A and C can be synthesized in 19 and 20 steps, respectively, with a good overall yield involving only five or six column chromatographic purifications.
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Affiliation(s)
- Yuanliang Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Maolin Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Folei Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
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5
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Luo G, Jia Y, Hu Y, Wu F, Wang M, Chen X. Practical synthesis of ECH and epoxyquinols A and B from (-)-shikimic acid. Org Biomol Chem 2022; 20:4608-4615. [PMID: 35608102 DOI: 10.1039/d2ob00559j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient synthesis of ECH, epoxyquinols A and B, and two bioactive analogs EqM and RKTS-33 has been completed starting from (-)-shikimic acid. Rapid establishment of the desired epoxyquinol core is facilitated through a key allylic oxidation with high stereoselectivity, which is achieved by fine tuning the cyclohexene substrate structure and reaction conditions.
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Affiliation(s)
- Guiyin Luo
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Yuanliang Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Yue Hu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Folei Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Maolin Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
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6
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Chen X, Hu Y, Gu H, Jia Y, Luo G. A Flexible Approach to the Synthesis of Type II and III Lepadin Alkaloids. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1681-4067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractA flexible approach to both type II and III lepadin alkaloids is developed for the first time. A key Diels–Alder reaction based on a novel chiral ketolactone dienophile is employed to obtain the desirable all-cis-trisubstituted cyclohexene with excellent regio- and stereoselectivity. As the subsequent closure of the piperidine ring is devised at the N1 and C2 position via an intramolecular nucleophilic amination, the two stereochemical types of lepadin frameworks with the opposite configuration at C2 can be conveniently accessible from a common intermediate. By the approach, lepadins D, E (type II) and F (type III) are stereoselectively synthesized from ethyl l-lactate.
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7
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Casertano M, Genovese M, Paoli P, Santi A, Aiello A, Menna M, Imperatore C. Insights into Cytotoxic Behavior of Lepadins and Structure Elucidation of the New Alkaloid Lepadin L from the Mediterranean Ascidian Clavelina lepadiformis. Mar Drugs 2022; 20:md20010065. [PMID: 35049920 PMCID: PMC8782007 DOI: 10.3390/md20010065] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/07/2022] [Accepted: 01/07/2022] [Indexed: 12/10/2022] Open
Abstract
The chemical investigation of the Mediterranean ascidian Clavelina lepadiformis has led to the isolation of a new lepadin, named lepadin L, and two known metabolites belonging to the same family, lepadins A and B. The planar structure and relative configuration of the decahydroquinoline ring of lepadin L were established both by means of HR-ESIMS and by a detailed as extensive analysis of 1D and 2D NMR spectra. Moreover, microscale derivatization of the new alkaloid lepadin L was performed to assess the relative configuration of the functionalized alkyl side chain. Lepadins A, B, and L were tested for their cytotoxic activity on a panel of cancer cell lines (human melanoma [A375], human breast [MDA-MB-468], human colon adenocarcinoma [HT29], human colorectal carcinoma [HCT116], and mouse myoblast [C2C12]). Interestingly, a deeper investigation into the mechanism of action of the most cytotoxic metabolite, lepadin A, on the A375 cells has highlighted its ability to induce a strongly inhibition of cell migration, G2/M phase cell cycle arrest and a dose-dependent decrease of cell clonogenity, suggesting that it is able to impair self-renewing capacity of A375 cells.
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Affiliation(s)
- Marcello Casertano
- Department of Pharmacy, University of Naples “Federico II”, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (A.A.); (C.I.)
| | - Massimo Genovese
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134 Florence, Italy; (M.G.); (P.P.); (A.S.)
| | - Paolo Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134 Florence, Italy; (M.G.); (P.P.); (A.S.)
| | - Alice Santi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134 Florence, Italy; (M.G.); (P.P.); (A.S.)
| | - Anna Aiello
- Department of Pharmacy, University of Naples “Federico II”, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (A.A.); (C.I.)
| | - Marialuisa Menna
- Department of Pharmacy, University of Naples “Federico II”, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (A.A.); (C.I.)
- Correspondence: ; Tel.: +39-081-678-518
| | - Concetta Imperatore
- Department of Pharmacy, University of Naples “Federico II”, Via D. Montesano 49, 80131 Naples, Italy; (M.C.); (A.A.); (C.I.)
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9
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Ma F, He C, Wang E, Tong R. Collective Asymmetric Total Syntheses of Marine Decahydroquinoline Alkaloid Lepadins A-E, H, and ent-I. Org Lett 2021; 23:6583-6588. [PMID: 34374548 DOI: 10.1021/acs.orglett.1c02435] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lepadins are cis-fused decahydroquinoline (DHQ) marine alkaloids that have shown diverse biological activities and have attracted extensive synthetic interest. A new collective synthetic strategy is reported that features a green chemistry approach for constructing the common cis-fused DHQ core, which is achieved through green oxone-halide oxidation for both the aza-Achmatowicz rearrangement and the intramolecular [3 + 2] cycloaddition of nitrile oxide-alkene. Collective total syntheses of lepadins A-E and H are accomplished from the common DHQ core within 10 steps.
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Affiliation(s)
- Foqing Ma
- Department of Chemistry and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China
| | - Chenxi He
- Department of Chemistry and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China
| | - Eryu Wang
- Department of Chemistry and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China
| | - Rongbiao Tong
- Department of Chemistry and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China
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10
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Gu H, Hu Y, Jia Y, Zhou Q, Luo G, Chen X. Total Synthesis of (-)-Lepadin F based on a Stereoselective Diels-Alder Reaction Controlled by a Ketolactone-type Dienophile. Chemistry 2021; 27:4141-4149. [PMID: 33289139 DOI: 10.1002/chem.202004778] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Indexed: 01/24/2023]
Abstract
An efficient approach to the type III lepadin alkaloids (lepadins F and G) has been developed through a key Diels-Alder reaction, in which a novel ketolactone-type dienophile with chiral diol unit is employed to generate the desirable all-cis-trisubstituted cyclohexene with excellent regio- and stereoselectivity control. The subsequent selective sulfonylation of the diol unit followed by SN 2 cyclization under hydrogenation conditions could construct the substituted piperidine ring. By using this approach, (-)-lepadin F is synthesized from ethyl l-lactate for the first time.
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Affiliation(s)
- He Gu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 610064, Chengdu, People's Republic of China
| | - Yue Hu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 610064, Chengdu, People's Republic of China
| | - Yuanliang Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 610064, Chengdu, People's Republic of China
| | - Qin Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 610064, Chengdu, People's Republic of China
| | - Guiyin Luo
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 610064, Chengdu, People's Republic of China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 610064, Chengdu, People's Republic of China
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11
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Shui F, Jia J, Yang X, Zhou Q, Jiang Y, Chen X. Synthesis of (+)-Epoxydon, (-)-Phyllostine, (-)-RKTS 33, and (-)-Parasitenone Featuring Selective Sulfonylation and Oxirane Ring Closure of Aldol Cyclization Products. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000486] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Shui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Junhao Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xing Yang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Qin Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Yimin Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
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12
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Zhou F, Liu X, Jia Y, Hu Y, Luo G, Chen X. Synthesis of botryolide E, ophiocerins A, B and C from d-glucono-δ-lactone. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Yang X, Yuan P, Shui F, Zhou Y, Chen X. A divergent strategy to synthesize gabosines featuring a switchable two-way aldol cyclization. Org Biomol Chem 2019; 17:4061-4072. [PMID: 30951069 DOI: 10.1039/c9ob00469f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Gabosines and their natural analogues, belonging to C7 carbasugars, have attracted great attention in synthesis due to their rich structural variety and promising biological activities. A new diversity-oriented approach for the gabosine-type carbasugars based on a tunable regioselective aldol cyclization of flexible precursor 2 is explored. Two cyclization modes (A and B) of the precursor can be well controlled by switching promoters to selectively produce two resulting cyclohexa(e)nones 3 and 10, both of which are versatile intermediates for various C7 carbasugars. After the conversion of 3 to eight natural carbasugars, the utility of intermediate 10 is illustrated by the first synthesis of (-)-gabosine L, as well as the new synthesis of (-)-gabosine A, (-)-gabosine B, (-)-gabosine N and (-)-gabosine O. The chemical structure and the absolute configuration of (-)-gabosine L are confirmed by its total synthesis.
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Affiliation(s)
- Xing Yang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China.
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14
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Jia J, Chen R, Jia Y, Gu H, Zhou Q, Chen X. Convergent Formal Synthesis of Ecteinascidin 743. J Org Chem 2019; 84:13696-13706. [PMID: 31523959 DOI: 10.1021/acs.joc.9b01778] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A concise formal synthesis of ecteinascidin 743 is described. Key features involve the coupling of the multisubstituted tetrahydroisoquinoline and phenylalaninol moieties via a regio- and stereoselective Pictet-Spengler cyclization as well as the subsequent chemoselective MOM protection of the phenol group, which opens a rapid access to the desirable pentacycle. The synthesis successfully delivered the advanced intermediate with the characteristic macrolactone from sesamol in 23 steps.
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Affiliation(s)
- Junhao Jia
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
| | - Ruijiao Chen
- Jining Medical College , Jining 272067 , P.R. China
| | - Yuanliang Jia
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
| | - He Gu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
| | - Qin Zhou
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
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15
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A concise synthesis of (+)-goniofufurone, (+)-7-epi-goniofufurone, (+)-crassalactones B and C. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Watters DJ. Ascidian Toxins with Potential for Drug Development. Mar Drugs 2018; 16:E162. [PMID: 29757250 PMCID: PMC5983293 DOI: 10.3390/md16050162] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/05/2018] [Accepted: 05/10/2018] [Indexed: 12/17/2022] Open
Abstract
Ascidians (tunicates) are invertebrate chordates, and prolific producers of a wide variety of biologically active secondary metabolites from cyclic peptides to aromatic alkaloids. Several of these compounds have properties which make them candidates for potential new drugs to treat diseases such as cancer. Many of these natural products are not produced by the ascidians themselves, rather by their associated symbionts. This review will focus mainly on the mechanism of action of important classes of cytotoxic molecules isolated from ascidians. These toxins affect DNA transcription, protein translation, drug efflux pumps, signaling pathways and the cytoskeleton. Two ascidian compounds have already found applications in the treatment of cancer and others are being investigated for their potential in cancer, neurodegenerative and other diseases.
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Affiliation(s)
- Dianne J Watters
- School of Environment and Science, Griffith University, Brisbane, Queensland 4111, Australia.
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