1
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Fazekas TJ, Micalizio GC. Progress Toward the Asymmetric De Novo Synthesis of Limonoids. Org Lett 2024; 26:1073-1077. [PMID: 38277646 DOI: 10.1021/acs.orglett.3c04306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
Asymmetric de novo construction of limonoids remains a challenging problem in stereoselective synthesis due to the diverse and complex structures associated with this class of natural products. Here, a unique synthetic pathway to an "intact" limonoid system is described. The synthetic route is based on exploiting an oxidative rearrangement reaction of a densely functionalized late-stage intermediate to simultaneously establish the stereodefined C10 quaternary center and an allylic acetate at C12. This is a unique example of a complex rearrangement reaction that proceeds on a system whose presumed intermediate allyl cation is highly hindered and lacks neighboring protons that are otherwise required for cation termination.
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Affiliation(s)
- Timothy J Fazekas
- Department of Chemistry, Dartmouth College, Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - Glenn C Micalizio
- Department of Chemistry, Dartmouth College, Burke Laboratory, Hanover, New Hampshire 03755, United States
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2
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Reddy GS, Corey EJ. Two Unprecedented Reactions of Nitrosyl Triflate: NO +-Induced Cationic Cascade Cyclization and C═C Oxidative Cleavage. Org Lett 2023; 25:1872-1877. [PMID: 36897052 DOI: 10.1021/acs.orglett.3c00353] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Nitrosyl triflate is shown to react with olefins in a CH2Cl2 solution by three different pathways depending on structure and reaction conditions: (1) cationic cyclization, (2) C═C cleavage, and (3) allylic nitrosation. Possible reaction pathways are described.
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Affiliation(s)
- G Sudhakar Reddy
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - E J Corey
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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3
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Li WS, Lei XP, Yan XT, Qin YY, Chen GY, Li S, Jiang ZP. Hainanxylogranolides A-F: New Limonoids isolated from the seeds of Hainan mangrove plant Xylocarpus granatum. Fitoterapia 2023; 165:105407. [PMID: 36581180 DOI: 10.1016/j.fitote.2022.105407] [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: 12/08/2022] [Revised: 12/23/2022] [Accepted: 12/23/2022] [Indexed: 12/27/2022]
Abstract
Six new limonoids, named hainanxylogranolides A-F (1-6), together with nineteen known ones (7-25) were isolated from the seeds of a Hainan mangrove Xylocarpus granatum. The structures of the new compounds were established by extensive NMR spectroscopic data combined with the DFT and TDDFT calculated electronic circular dichroism spectra. Hainanxylogranolide A (1) is the aromatic B-ring limonoid containing a central pyridine ring and a C-17 substituted γ(21)-hydroxybutenolide moiety. Hainanxylogranolide B (2) belongs to the small group of mexicanolides containing a C3-O-C8 bridge, whereas hainanxylogranolides C and D (3 and 4) are mexicanolides comprising a C1-O-C8 bridge. Compounds 9 and 25 posed obvious inhibition effect on the tube formation of HUVECs. There are only about 25% tube-like structures were observed at the concentration of 40.0 μM of compound 25. The antiviral activities of the isolates against herpes simplex virus-1 (HSV-1) and severe fever with thrombocytopenia syndrome virus (SFTSV) were tested in vitro. Compound 23 exhibited moderate anti-SFTSV activity with the IC50 value of 29.58 ± 0.73 μM. This is the first report of anti-angiogenic effect and anti-SFTSV activity of limonoids from the genus Xylocarpus.
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Affiliation(s)
- Wan-Shan Li
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education and Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Xue-Ping Lei
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital and The Sixth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Xin-Tong Yan
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China; Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Sanya 572000, China
| | - Yu-Yue Qin
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education and Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Guang-Ying Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education and Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Song Li
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China; Song Li' Academician Workstation of Hainan University (School of Pharmaceutical Sciences), Sanya 572000, China; Hubei Jiangxia Laboratory, Wuhan 430071, China.
| | - Zhong-Ping Jiang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China.
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4
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Schuppe AW, Liu Y, Gonzalez-Hurtado E, Zhao Y, Jiang X, Ibarraran S, Huang D, Wang E, Lee J, Loria JP, Dixit VD, Li X, Newhouse TR. Unified Total Synthesis of the Limonoid Alkaloids: Strategies for the De Novo Synthesis of Highly Substituted Pyridine Scaffolds. Chem 2022; 8:2856-2887. [PMID: 37396824 PMCID: PMC10311986 DOI: 10.1016/j.chempr.2022.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Highly substituted pyridine scaffolds are found in many biologically active natural products and therapeutics. Accordingly, numerous complementary de novo approaches to obtain differentially substituted pyridines have been disclosed. This article delineates the evolution of the synthetic strategies designed to assemble the demanding tetrasubstituted pyridine core present in the limonoid alkaloids isolated from Xylocarpus granatum, including xylogranatopyridine B, granatumine A and related congeners. In addition, NMR calculations suggested structural misassignment of several limonoid alkaloids, and predicted their C3-epimers as the correct structures, which was further validated unequivocally through chemical synthesis. The materials produced in this study were evaluated for cytotoxicity, anti-oxidant effects, anti-inflammatory action, PTP1B and Nlrp3 inflammasome inhibition, which led to compelling anti-inflammatory activity and anti-oxidant effects being discovered.
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Affiliation(s)
- Alexander W. Schuppe
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Yannan Liu
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Elsie Gonzalez-Hurtado
- Department of Pathology, Immunobiology, Comparative Medicine, Yale School of Medicine, 310 Cedar Street, New Haven, Connecticut 06520, United States
| | - Yizhou Zhao
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Xuefeng Jiang
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou 310018, P. R. China
| | - Sebastian Ibarraran
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - David Huang
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Emma Wang
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Jaehoo Lee
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - J. Patrick Loria
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Vishwa Deep Dixit
- Department of Pathology, Immunobiology, Comparative Medicine, Yale School of Medicine, 310 Cedar Street, New Haven, Connecticut 06520, United States
| | - Xin Li
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Rd, Hangzhou 310018, P. R. China
| | - Timothy R. Newhouse
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
- Lead contact
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5
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Abstract
The limonoids have attracted significant attention from the synthetic community owing to their striking structural complexity and medicinal potential. Recent efforts notwithstanding, synthetic access to many intact or ring D-seco limonoids still remains elusive. Here, we report the first de novo synthesis of gedunin, a ring D-seco limonoid with HSP90 inhibitory activity, that proceeds in 13 steps. Two enabling features in our strategy are the application of modern catalytic transformations to set the key quaternary centers in the carbocyclic core and the use of biocatalytic oxidation at C3 to establish a chemical handle to access the A-ring enone motif. The strategy presented herein may provide an entry point to a wider range of oxidized limonoids.
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Affiliation(s)
- Jian Li
- Department of Chemistry, BioScience Research Collaborative, Rice University, Houston, Texas 77005, United States
| | - Fang Chen
- Department of Chemistry, BioScience Research Collaborative, Rice University, Houston, Texas 77005, United States
| | - Hans Renata
- Department of Chemistry, BioScience Research Collaborative, Rice University, Houston, Texas 77005, United States
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6
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Tong YN, Guo J, Chen YF, Zhang GX. Antimicrobial limonoids from the seeds of Cipadessa cinerascensa. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 24:238-244. [PMID: 33890531 DOI: 10.1080/10286020.2021.1915996] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/23/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
Phytochemical investigation on the 90% EtOH extract of the seeds of Cipadessa cinerascensa led to the isolation of three new limonoids, cinerascenoids A-C (1-3). Structural elucidation of all the compounds were performed by spectral methods such as 1 D and 2 D (1H-1H COSY, HMQC, and HMBC) NMR spectroscopy. All the limonoids were in vitro evaluated for their antimicrobial activities against six pathogenic microorganisms. Limonoids 1 and 2 exhibited some activities against three Gram negative bacteria with MIC values less than 60 μg/ml.
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Affiliation(s)
- Ya-Nan Tong
- Department of Nuclear Medicine, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Jia Guo
- Department of Nuclear Medicine, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Yu-Feng Chen
- Department of Nuclear Medicine, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Guo-Xu Zhang
- Department of Nuclear Medicine, General Hospital of Northern Theater Command, Shenyang 110016, China
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7
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Liu Y, Schuppe AW, Zhao Y, Lee J, Newhouse TR. Synthesis of (-)-melazolide B, a degraded limonoid, from a natural terpene precursor. TETRAHEDRON CHEM 2022; 1:100011. [PMID: 38606284 PMCID: PMC11008529 DOI: 10.1016/j.tchem.2022.100011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Degraded limonoids are a subclass of limonoid natural products that derive from ring-intact or ring-rearranged limonoids. Establishment of robust synthetic routes to access them could provide valuable materials to identify the simplest active pharmacophore responsible for the observed biological activities of the parent molecules. This communication delineates the development of a divergent strategy to furnish melazolide B and several other related congeners from a common keto-lactone intermediate, which was rapidly assembled from α-ionone. A chemoselective carbonyl α,β-dehydrogenation and a Wharton reduction were key strategic steps in this synthetic pathway.
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Affiliation(s)
| | | | - Yizhou Zhao
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT, 06520-8107, United States
| | - Jaehoo Lee
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT, 06520-8107, United States
| | - Timothy R. Newhouse
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT, 06520-8107, United States
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8
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Mutoh H, Nakamura S, Hagiwara K, Inoue M. Construction of Pentacyclic Limonoid Skeletons via Radical Cascade Reactions. J Org Chem 2021; 86:6869-6878. [PMID: 33905252 DOI: 10.1021/acs.joc.1c00212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Limonoids 1 and 2 share a 6/6/6/5-membered ABCD-ring system and a six-membered oxacycle and differ in their C9-stereochemistries. A new radical-based strategy was devised to construct the pentacyclic skeletons of 1 and 2. An oxacycle-fused A-ring and enyne fragments were coupled to produce radical precursors 4a-4c with different C7-oxygen functionalities. The bridgehead tertiary bromide of 4a-4c participated in a radical cascade reaction with the three unsaturated bonds to cyclize the C9-diastereomeric BCD-rings.
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Affiliation(s)
- Hiroyuki Mutoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu Nakamura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Koichi Hagiwara
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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9
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Liang XT, Sun BC, Liu C, Li YH, Zhang N, Xu QQ, Zhang ZC, Han YX, Chen JH, Yang Z. Asymmetric Total Synthesis of (-)-Spirochensilide A, Part 1: Diastereoselective Synthesis of the ABCD Ring and Stereoselective Total Synthesis of 13( R)-Demethyl Spirochensilide A. J Org Chem 2021; 86:2135-2157. [PMID: 33433196 DOI: 10.1021/acs.joc.0c02494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A concise and diastereoselective construction of the ABCD ring system of spirochensilide A is described. The key steps of this synthesis are a semipinacol rearrangement reaction to stereoselectively construct the AB ring system bearing two vicinal quaternary chiral centers and a Co-mediated Pauson-Khand reaction to form the spiro-based bicyclic CD ring system. This chemistry leads to the stereoselective synthesis of 13(R)-demethyl spirochensilide A, paving the way for the first asymmetric total synthesis of (-)-spirochensilide A.
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Affiliation(s)
- Xin-Ting Liang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Bao-Chuan Sun
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Chang Liu
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Yuan-He Li
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Nan Zhang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Qian-Qian Xu
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Zhong-Chao Zhang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yi-Xin Han
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Jia-Hua Chen
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Zhen Yang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China.,Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.,Shenzhen Bay Laboratory, Shenzhen 518055, China
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10
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Liang XT, Chen JH, Yang Z. Asymmetric Total Synthesis of (−)-Spirochensilide A. J Am Chem Soc 2020; 142:8116-8121. [DOI: 10.1021/jacs.0c02522] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xin-Ting Liang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Jia-Hua Chen
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Zhen Yang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Shenzhen Wan Laboratory, Shenzhen, 518055, China
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11
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Hu J, Jia Z, Xu K, Ding H. Total Syntheses of (+)-Stemarin and the Proposed Structures of Stemara-13(14)-en-18-ol and Stemara-13(14)-en-17-acetoxy-18-ol. Org Lett 2020; 22:1426-1430. [DOI: 10.1021/acs.orglett.0c00029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jialei Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Ziqi Jia
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Kaixiang Xu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
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12
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Michalak K, Rárová L, Kubala M, Čechová P, Strnad M, Wicha J. Synthesis and evaluation of cytotoxic and Na+/K+-ATP-ase inhibitory activity of selected 5α-oleandrigenin derivatives. Eur J Med Chem 2019; 180:417-429. [DOI: 10.1016/j.ejmech.2019.07.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/08/2019] [Accepted: 07/08/2019] [Indexed: 12/28/2022]
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13
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Schuppe AW, Zhao Y, Liu Y, Newhouse TR. Total Synthesis of (+)-Granatumine A and Related Bislactone Limonoid Alkaloids via a Pyran to Pyridine Interconversion. J Am Chem Soc 2019; 141:9191-9196. [PMID: 31117671 DOI: 10.1021/jacs.9b04508] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report the first total synthesis of (+)-granatumine A, a limonoid alkaloid with PTP1B inhibitory activity, in ten steps. Over the course of this study, two key methodological advances were made: a cost-effective procedure for ketone α,β-dehydrogenation using allyl-Pd catalysis, and a Pd-catalyzed protocol to convert epoxyketones to 1,3-diketones. The central tetrasubstituted pyridine is formed by a convergent Knoevenagel condensation and carbonyl-selective electrocyclization cascade, which was followed by a direct transformation of a 2 H-pyran to a pyridine. These studies have led to the structural revision of two members of this family.
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Affiliation(s)
- Alexander W Schuppe
- Department of Chemistry , Yale University , 225 Prospect Street , New Haven , Connecticut 06520-8107 , United States
| | - Yizhou Zhao
- Department of Chemistry , Yale University , 225 Prospect Street , New Haven , Connecticut 06520-8107 , United States
| | - Yannan Liu
- Department of Chemistry , Yale University , 225 Prospect Street , New Haven , Connecticut 06520-8107 , United States
| | - Timothy R Newhouse
- Department of Chemistry , Yale University , 225 Prospect Street , New Haven , Connecticut 06520-8107 , United States
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14
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Yamashita S. Total Synthesis of Limonin, a Personal Story on Natural Product Synthesis. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Schuppe AW, Huang D, Chen Y, Newhouse TR. Total Synthesis of (-)-Xylogranatopyridine B via a Palladium-Catalyzed Oxidative Stannylation of Enones. J Am Chem Soc 2018; 140:2062-2066. [PMID: 29338207 PMCID: PMC6499388 DOI: 10.1021/jacs.7b13189] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We report a total synthesis of the pyridine-containing limonoid alkaloid (-)-xylogranatopyridine B in 11 steps from commercially available dihydrocarvone. The central pyridine ring was assembled by a late-stage fragment coupling approach employing a modified Liebeskind pyridine synthesis. One fragment was prepared by an allyl-palladium catalyzed oxidative enone β-stannylation, in which the key bimetallic β-stannyl palladium enolate intermediate undergoes a β-hydride elimination. This methodology also allowed introduction of alkyl and silyl groups to the β-position of enones.
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Affiliation(s)
- Alexander W. Schuppe
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - David Huang
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Yifeng Chen
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Timothy R. Newhouse
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
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16
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Li WS, Yang Y, Liu JJ, Shen L, Shi Z, Wu J. Scaffold diversity-oriented synthesis of limonoid dimers: discovery of an axially chiral agent within vivoanti-breast cancer activity. Org Chem Front 2018. [DOI: 10.1039/c8qo00154e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Eight new limonoid dimers of four skeletons were synthesized. The axially chiral dimer5bexhibitedin vivoanti-breast cancer activity.
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Affiliation(s)
- Wan-Shan Li
- Marine Drugs Research Center
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Yang Yang
- Department of Cell Biology & Institute of Biomedicine
- National Engineering Research Center of Genetic Medicine
- Guangdong Provincial Key Laboratory of Bioengineering Medicine
- College of Life Science and Technology
- Jinan University
| | - Jun-Jun Liu
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
- P. R. China
| | - Li Shen
- Marine Drugs Research Center
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Zhi Shi
- Department of Cell Biology & Institute of Biomedicine
- National Engineering Research Center of Genetic Medicine
- Guangdong Provincial Key Laboratory of Bioengineering Medicine
- College of Life Science and Technology
- Jinan University
| | - Jun Wu
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
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17
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Michalak M, Michalak K, Wicha J. The synthesis of cardenolide and bufadienolide aglycones, and related steroids bearing a heterocyclic subunit. Nat Prod Rep 2017; 34:361-410. [PMID: 28378871 DOI: 10.1039/c6np00107f] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Covering: early studies through to March 2016Cardenolides and bufadienolides constitute an attractive class of biologically active steroid derivatives which have been used for the treatment of heart disease in traditional remedies as well as in modern medicinal therapy. Due to their application as therapeutic agents and their unique molecular structures, bearing unsaturated 5- or 6-membered lactones (or other heterocycles) attached to the steroid core, cardio-active steroids have received great attention, which has intensified during the last decade, in the synthetic organic community. Advances in the field of cross-coupling reactions have provided a powerful tool for the attachment of lactone subunits to the steroid core. This current review covers a methodological analysis of synthetic efforts to cardenolide and bufadienolide aglycones. Special emphasis is given to cross-coupling reactions applied for the attachment of lactone subunits at sterically very hindered positions of the steroid core. The carefully selected partial and total syntheses of representative cardio-active steroids will also be presented to exemplify recent achievements (improvements) in the field.
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Affiliation(s)
- Michał Michalak
- Institute of Organic Chemistry, Polish Academy of Sciences, ul. Marcina Kasprzaka 44/52, 01-224 Warsaw, Poland.
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18
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Furuta M, Hanaya K, Sugai T, Shoji M. Synthesis of trans,trans,cis-fused tetracyclic skeleton via radical domino cyclization. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Ionic hydrogenation-directed stereoselective construction of C-20(H) stereogenic center in steroid side chains: Scope and limitations. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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20
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Schuppe AW, Newhouse TR. Assembly of the Limonoid Architecture by a Divergent Approach: Total Synthesis of (±)-Andirolide N via (±)-8α-Hydroxycarapin. J Am Chem Soc 2017; 139:631-634. [PMID: 28001380 PMCID: PMC5928519 DOI: 10.1021/jacs.6b12268] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We report the first total synthesis of the limonoid andirolide N using a 12-step sequence from commercially available materials. The final step of this route demonstrates the chemical feasibility of our biosynthetic proposal that andirolide N arises from 8α-hydroxycarapin. The strategic use of a degraded limonoid as a platform for the synthesis of more structurally complex congeners may be a general approach to obtain limonoids with diverse functional properties.
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Affiliation(s)
- Alexander W. Schuppe
- Department of Chemistry, Yale University, 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Timothy R. Newhouse
- Department of Chemistry, Yale University, 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
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21
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Gualdani R, Cavalluzzi MM, Lentini G, Habtemariam S. The Chemistry and Pharmacology of Citrus Limonoids. Molecules 2016; 21:E1530. [PMID: 27845763 PMCID: PMC6273274 DOI: 10.3390/molecules21111530] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 11/10/2016] [Indexed: 01/10/2023] Open
Abstract
Citrus limonoids (CLs) are a group of highly oxygenated terpenoid secondary metabolites found mostly in the seeds, fruits and peel tissues of citrus fruits such as lemons, limes, oranges, pumellos, grapefruits, bergamots, and mandarins. Represented by limonin, the aglycones and glycosides of CLs have shown to display numerous pharmacological activities including anticancer, antimicrobial, antioxidant, antidiabetic and insecticidal among others. In this review, the chemistry and pharmacology of CLs are systematically scrutinised through the use of medicinal chemistry tools and structure-activity relationship approach. Synthetic derivatives and other structurally-related limonoids from other sources are include in the analysis. With the focus on literature in the past decade, the chemical classification of CLs, their physico-chemical properties as drugs, their biosynthesis and enzymatic modifications, possible ways of enhancing their biological activities through structural modifications, their ligand efficiency metrics and systematic graphical radar plot analysis to assess their developability as drugs are among those discussed in detail.
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Affiliation(s)
- Roberta Gualdani
- Department of Chemistry "U. Shiff", University of Florence, Via della Lastruccia 3, Florence 50019, Italy.
| | - Maria Maddalena Cavalluzzi
- Department of Pharmacy-Drug Sciences, University of Studies of Bari Aldo Moro, Via E. Orabona n. 4, Bari 70126, Italy.
| | - Giovanni Lentini
- Department of Pharmacy-Drug Sciences, University of Studies of Bari Aldo Moro, Via E. Orabona n. 4, Bari 70126, Italy.
| | - Solomon Habtemariam
- Pharmacognosy Research Laboratories & Herbal Analysis Services, University of Greenwich, Central Avenue, Charham-Maritime, Kent ME4 4TB, UK.
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22
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Li W, Shen L, Bruhn T, Pedpradab P, Wu J, Bringmann G. Trangmolins A-F with an Unprecedented Structural Plasticity of the Rings A and B: New Insight into Limonoid Biosynthesis. Chemistry 2016; 22:11719-27. [PMID: 27383693 DOI: 10.1002/chem.201602230] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Wanshan Li
- Marine Drugs Research Center; College of Pharmacy; Jinan University; 601 Huangpu Avenue West Guangzhou 510632 P.R. China
| | - Li Shen
- Marine Drugs Research Center; College of Pharmacy; Jinan University; 601 Huangpu Avenue West Guangzhou 510632 P.R. China
| | - Torsten Bruhn
- Institute of Organic Chemistry; University Würzburg; Am Hubland Würzburg 97074 Germany
| | - Patchara Pedpradab
- Aquatic Animal Health Management Research Unit; Department of Marine Sciences; Faculty of Sciences and Fishery Technology; Rajamangala University of Technology Srivijaya, Trang Campus, Sikao District; Trang Province 92150 Thailand
| | - Jun Wu
- Marine Drugs Research Center; College of Pharmacy; Jinan University; 601 Huangpu Avenue West Guangzhou 510632 P.R. China
| | - Gerhard Bringmann
- Institute of Organic Chemistry; University Würzburg; Am Hubland Würzburg 97074 Germany
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23
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Xu S, Zhang M, Zhang W, Xie X, She X. Concise Total Synthesis of the Bisnorditerpene (+)-(5β,8α,10α)-8-hydroxy-13-methylpodocarpa-9(11),13-diene-3,12-dione. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shiyan Xu
- State Key Laboratory of Applied Organic Chemistry; Department of Chemistry; Lanzhou University; 222 South Tianshui Road Lanzhou 730000 P. R. China
| | - Mingjie Zhang
- State Key Laboratory of Applied Organic Chemistry; Department of Chemistry; Lanzhou University; 222 South Tianshui Road Lanzhou 730000 P. R. China
| | - Weiwei Zhang
- State Key Laboratory of Applied Organic Chemistry; Department of Chemistry; Lanzhou University; 222 South Tianshui Road Lanzhou 730000 P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry; Department of Chemistry; Lanzhou University; 222 South Tianshui Road Lanzhou 730000 P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry; Department of Chemistry; Lanzhou University; 222 South Tianshui Road Lanzhou 730000 P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300071 P. R. China
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24
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Tian Y, Xu X, Zhang L, Qu J. Tetraphenylphosphonium Tetrafluoroborate/1,1,1,3,3,3-Hexafluoroisopropanol (Ph4PBF4/HFIP) Effecting Epoxide-Initiated Cation–Olefin Polycyclizations. Org Lett 2016; 18:268-71. [DOI: 10.1021/acs.orglett.5b03438] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yan Tian
- State Key Laboratory
and
Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Xin Xu
- State Key Laboratory
and
Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Lin Zhang
- State Key Laboratory
and
Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Jin Qu
- State Key Laboratory
and
Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
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25
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Dai YG, Li WS, Pedpradab P, Liu JJ, Wu J, Shen L. Thaixylomolins O–R: four new limonoids from the Trang mangrove, Xylocarpus moluccensis. RSC Adv 2016. [DOI: 10.1039/c6ra14721f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Four new limonoids, including two novel phragmalin 8,9,12-orthoesters, were identified from the seeds of Thai mangrove, Xylocarpus moluccensis.
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Affiliation(s)
- Yi-Guo Dai
- Marine Drugs Research Center
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Wan-Shan Li
- Marine Drugs Research Center
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Patchara Pedpradab
- Department of Marine Sciences
- Faculty of Sciences and Fishery Technology
- Rajamangala University of Technology Srivijaya
- Thailand
| | - Jun-Jun Liu
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
- P. R. China
| | - Jun Wu
- Marine Drugs Research Center
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- P. R. China
| | - Li Shen
- Marine Drugs Research Center
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- P. R. China
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26
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Suzuki K, Yamakoshi H, Nakamura S. Construction of Bridged Polycyclic Systems by Polyene Cyclization. Chemistry 2015; 21:17605-9. [DOI: 10.1002/chem.201503969] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Indexed: 01/06/2023]
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27
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Total Synthesis of Limonin. Angew Chem Int Ed Engl 2015; 54:8538-41. [DOI: 10.1002/anie.201503794] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 05/16/2015] [Indexed: 11/07/2022]
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28
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Yamashita S, Naruko A, Nakazawa Y, Zhao L, Hayashi Y, Hirama M. Total Synthesis of Limonin. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503794] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Rajendar G, Corey EJ. A systematic study of functionalized oxiranes as initiating groups for cationic polycyclization reactions. J Am Chem Soc 2015; 137:5837-44. [PMID: 25871500 DOI: 10.1021/jacs.5b03229] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three different methods have been developed that effectively utilize chiral oxiranes derived from Katsuki-Sharpless epoxidation of allylic alcohols as initiating groups for cationic cyclization of unsaturated substrates to form chiral polycycles. This type of transformation has previously been problematic. These employ either epoxy-methoximes, vinyl-substituted oxiranes, or hydroxymethyl oxiranes. All three approaches are described in detail. In addition, this research has led to possible explanations for previously encountered difficulties in this area and provided two new insights into the Lewis acid activation of oxiranes. The methodology described herein constitutes a valuable link between two powerful synthetic constructions, enantioselective Katsuki-Sharpless epoxidation and cationic polycyclization reactions.
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Affiliation(s)
- Goreti Rajendar
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - E J Corey
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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30
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Liu L, Du L, Zhang-Negrerie D, Du Y, Zhao K. Metal-Free Tandem Oxidative Aryl Migration and C–C Bond Cleavage: Synthesis of α-Ketoamides and Esters from Acrylic Derivatives. Org Lett 2014; 16:5772-5. [DOI: 10.1021/ol502834g] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Le Liu
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Liang Du
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Daisy Zhang-Negrerie
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Kang Zhao
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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31
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Xu S, Gu J, Li H, Ma D, Xie X, She X. Enantioselective Total Synthesis of (−)-Walsucochin B. Org Lett 2014; 16:1996-9. [DOI: 10.1021/ol500553x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Shiyan Xu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University Lanzhou 730000, P. R. China
| | - Jixiang Gu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University Lanzhou 730000, P. R. China
| | - Huilin Li
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University Lanzhou 730000, P. R. China
| | - Donghui Ma
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University Lanzhou 730000, P. R. China
| | - Xingang Xie
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University Lanzhou 730000, P. R. China
| | - Xuegong She
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University Lanzhou 730000, P. R. China
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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32
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Fernández-Mateos A, Madrazo SE, Teijón PH, Clemente RR, González RR, González FS. Synthesis of the BCDE Molecular Fragment of Azadiradione Mediated by Titanocene(III). J Org Chem 2013; 78:9571-8. [DOI: 10.1021/jo401646g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Fernández-Mateos
- Departamento de Química
Orgánica, Facultad de CC Químicas, and ‡Servicio General
de Difracción de Rayos X, Facultad de Ciencias,Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - S. Encinas Madrazo
- Departamento de Química
Orgánica, Facultad de CC Químicas, and ‡Servicio General
de Difracción de Rayos X, Facultad de Ciencias,Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - P. Herrero Teijón
- Departamento de Química
Orgánica, Facultad de CC Químicas, and ‡Servicio General
de Difracción de Rayos X, Facultad de Ciencias,Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - R. Rabanedo Clemente
- Departamento de Química
Orgánica, Facultad de CC Químicas, and ‡Servicio General
de Difracción de Rayos X, Facultad de Ciencias,Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - R. Rubio González
- Departamento de Química
Orgánica, Facultad de CC Químicas, and ‡Servicio General
de Difracción de Rayos X, Facultad de Ciencias,Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - F. Sanz González
- Departamento de Química
Orgánica, Facultad de CC Químicas, and ‡Servicio General
de Difracción de Rayos X, Facultad de Ciencias,Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
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33
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Yamashita S, Naruko A, Yamada T, Hayashi Y, Hirama M. Concise Synthesis of the Tetracyclic Framework of Azadiradione: Tandem Radical Cyclization Route. CHEM LETT 2013. [DOI: 10.1246/cl.2013.220] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuji Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University
| | - Akito Naruko
- Department of Chemistry, Graduate School of Science, Tohoku University
| | - Takahiro Yamada
- Department of Chemistry, Graduate School of Science, Tohoku University
| | - Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University
| | - Masahiro Hirama
- Department of Chemistry, Graduate School of Science, Tohoku University
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University
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34
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Zhang HJ, Priebbenow DL, Bolm C. Acylsilanes: valuable organosilicon reagents in organic synthesis. Chem Soc Rev 2013; 42:8540-71. [DOI: 10.1039/c3cs60185d] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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35
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Fernández-Mateos A, Ramos Silvo AI, Rubio González R, Simmonds MSJ. Synthesis of CDE molecular fragments related to sendanin mediated by titanocene(III). Org Biomol Chem 2012; 10:5620-8. [PMID: 22717555 DOI: 10.1039/c2ob25538c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical, brief, and diastereoselective synthesis of limonoid CDE fragments from a readily available starting material is described. The key step was the titanocene(III)-promoted cyclization of unsaturated epoxylactones, readily prepared from α-cyclocitral. In this way, we confirm the viability of our procedure for the synthesis of a limonoid model with different functionalization patterns. We also report the antifeedant activity of epoxylactones 18 and 19, which show significant antifeedant activity against Spodoptera littoralis and Spodoptera frugiperda, two insect species with different feeding ecologies.
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Affiliation(s)
- A Fernández-Mateos
- Departamento de Química Orgánica, Facultad de CC. Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008, Salamanca, Spain.
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36
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Hullin-Matsuda F, Tomishige N, Sakai S, Ishitsuka R, Ishii K, Makino A, Greimel P, Abe M, Laviad EL, Lagarde M, Vidal H, Saito T, Osada H, Hanada K, Futerman AH, Kobayashi T. Limonoid compounds inhibit sphingomyelin biosynthesis by preventing CERT protein-dependent extraction of ceramides from the endoplasmic reticulum. J Biol Chem 2012; 287:24397-411. [PMID: 22605339 DOI: 10.1074/jbc.m112.344432] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
To identify novel inhibitors of sphingomyelin (SM) metabolism, a new and selective high throughput microscopy-based screening based on the toxicity of the SM-specific toxin, lysenin, was developed. Out of a library of 2011 natural compounds, the limonoid, 3-chloro-8β-hydroxycarapin-3,8-hemiacetal (CHC), rendered cells resistant to lysenin by decreasing cell surface SM. CHC treatment selectively inhibited the de novo biosynthesis of SM without affecting glycolipid and glycerophospholipid biosynthesis. Pretreatment with brefeldin A abolished the limonoid-induced inhibition of SM synthesis suggesting that the transport of ceramide (Cer) from the endoplasmic reticulum to the Golgi apparatus is affected. Unlike the Cer transporter (CERT) inhibitor HPA-12, CHC did not change the transport of a fluorescent short chain Cer analog to the Golgi apparatus or the formation of fluorescent and short chain SM from the corresponding Cer. Nevertheless, CHC inhibited the conversion of de novo synthesized Cer to SM. We show that CHC specifically inhibited the CERT-mediated extraction of Cer from the endoplasmic reticulum membranes in vitro. Subsequent biochemical screening of 21 limonoids revealed that some of them, such as 8β-hydroxycarapin-3,8-hemiacetal and gedunin, which exhibits anti-cancer activity, inhibited SM biosynthesis and CERT-mediated extraction of Cer from membranes. Model membrane studies suggest that 8β-hydroxycarapin-3,8-hemiacetal reduced the miscibility of Cer with membrane lipids and thus induced the formation of Cer-rich membrane domains. Our study shows that certain limonoids are novel inhibitors of SM biosynthesis and suggests that some biological activities of these limonoids are related to their effect on the ceramide metabolism.
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37
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Gao G, Bai XF, Li F, Zheng LS, Zheng ZJ, Lai GQ, Jiang K, Li F, Xu LW. A Lewis acid-promoted reduction of acylsilanes to α-hydroxysilanes by diethylzinc. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.02.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Heasley B. Chemical synthesis of the cardiotonic steroid glycosides and related natural products. Chemistry 2012; 18:3092-120. [PMID: 22354477 DOI: 10.1002/chem.201103733] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The active components from the extracts of Digitalis, cardiotonic steroid glycosides, have been ingested by humans for more than 200 years as a medicinal therapy for heart failure and abnormal heart rhythms. The positive inotropic activity of the cardiotonic steroids that mediates clinically useful physiological effects in patients has been attributed largely to a high affinity inhibitory interaction with the extracellular surface of the membrane-bound sodium pump (Na(+)/K(+)-ATPase). However, previously unrecognized intracellular signaling pathways continue to be uncovered. This Review examines both partial and de novo synthetic approaches to the medicinally important and structurally captivating cardenolide and bufadienolide steroid families, with an emphasis on the stereocontrolled construction of the pharmacophoric aglycone (genin) framework.
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Affiliation(s)
- Brian Heasley
- Scynexis, Inc. P. O. Box 12878, Research Triangle Park, NC 27709-2878, USA.
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39
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Affiliation(s)
- Brian Heasley
- Scynexis, Inc., P. O. Box 12878, Research Triangle Park, NC 27709‐2878, USA, Fax: +1‐919‐5448697
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40
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Fernández-Mateos A, Herrero Teijón P, Pascual Coca G, Rubio González R, Simmonds M. Synthesis of limonoid CDE fragments related to limonin and nimbinim. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Yuan T, Zhu RX, Zhang H, Odeku OA, Yang SP, Liao SG, Yue JM. Structure Determination of Grandifotane A from Khaya grandifoliola by NMR, X-ray Diffraction, and ECD Calculation. Org Lett 2009; 12:252-5. [DOI: 10.1021/ol902565s] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Yuan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China, and Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Rong-Xiu Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China, and Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Hua Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China, and Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Oluwatoyin A. Odeku
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China, and Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Sheng-Ping Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China, and Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Shang-Gao Liao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China, and Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China, and Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan, Nigeria
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Affiliation(s)
- Tao Yuan
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Sheng-Ping Yang
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Chuan-Rui Zhang
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Sheng Zhang
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
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