1
|
Hubert P, Seibel E, Beemelmanns C, Campagne J, Figueiredo RM. Stereoselective Construction of (
E,Z
)‐1,3‐Dienes and Its Application in Natural Product Synthesis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000730] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Pierre Hubert
- ICGM Univ Montpellier, CNRS, ENSCM Montpellier France
| | - Elena Seibel
- Hans-Knöll-Institute (HKI) Beutenbergstrasse 11a 07745 Jena Germany
| | | | | | | |
Collapse
|
2
|
Jia X, Lei H, Han F, Zhang T, Chen Y, Xu Z, Nakliang P, Choi S, Guo Y, Ye T. Asymmetric Total Syntheses of Kopsane Alkaloids via a PtCl 2 -Catalyzed Intramolecular [3+2] Cycloaddition. Angew Chem Int Ed Engl 2020; 59:12832-12836. [PMID: 32329945 DOI: 10.1002/anie.202005048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Indexed: 12/19/2022]
Abstract
A concise and asymmetric total synthesis of five kopsane alkaloids that share a unique heptacyclic caged ring system was accomplished. The key transformation in the sequence involved a remarkable PtCl2 -catalyzed intramolecular [3+2] cycloaddition, which allowed for the rapid assembly of pentacyclic carbon skeletons bearing 2,3-quaternary functionalized indoline. Expeditious construction of diverse indoline scaffolds with excellent control of diastereoselectivity demonstrated the broad scope and versatility of this key transformation.
Collapse
Affiliation(s)
- Xuelei Jia
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| | - Honghui Lei
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| | - Feipeng Han
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| | - Tao Zhang
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| | - Ying Chen
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| | - Zhengshuang Xu
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| | - Pratanphorn Nakliang
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, 03760, Korea
| | - Sun Choi
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, 03760, Korea
| | - Yian Guo
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| | - Tao Ye
- State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Tsinghua Shenzhen International Graduate School, Xili, Nanshan District, Shenzhen, 518055, China
| |
Collapse
|
3
|
Jia X, Lei H, Han F, Zhang T, Chen Y, Xu Z, Nakliang P, Choi S, Guo Y, Ye T. Asymmetric Total Syntheses of Kopsane Alkaloids via a PtCl
2
‐Catalyzed Intramolecular [3+2] Cycloaddition. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xuelei Jia
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| | - Honghui Lei
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| | - Feipeng Han
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| | - Tao Zhang
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| | - Ying Chen
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| | - Zhengshuang Xu
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| | - Pratanphorn Nakliang
- College of Pharmacy and Graduate School of Pharmaceutical Sciences Ewha Womans University Seoul 03760 Korea
| | - Sun Choi
- College of Pharmacy and Graduate School of Pharmaceutical Sciences Ewha Womans University Seoul 03760 Korea
| | - Yian Guo
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| | - Tao Ye
- State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Tsinghua Shenzhen International Graduate School Xili, Nanshan District Shenzhen 518055 China
| |
Collapse
|
4
|
Sakamoto K, Hakamata A, Iwasaki A, Suenaga K, Tsuda M, Fuwa H. Total Synthesis, Stereochemical Revision, and Biological Assessment of Iriomoteolide-2a. Chemistry 2019; 25:8528-8542. [PMID: 30882926 DOI: 10.1002/chem.201900813] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/13/2019] [Indexed: 01/14/2023]
Abstract
Iriomoteolide-2a is a marine macrolide metabolite isolated from a cultured broth of the benthic dinoflagellate Amphidinium sp. HYA024 strain. This naturally occurring substance was reported to show remarkable cytotoxic activity against human cancer cell lines HeLa and DG-75 and in vivo antitumor activity against murine leukemia P388 cell line. Herein, the total synthesis, stereochemical revision, and biological assessment of iriomoteolide-2a are reported in detail. Total synthesis of the proposed structure 1 of iriomoteolide-2a featured a late-stage convergent assembly of three components by a Suzuki-Miyaura coupling, an esterification, and a ring-closing metathesis. However, the NMR data of synthetic 1 were not identical to those of the natural product. Careful analysis of the NMR data of the authentic material and synthesis/NMR analysis of appropriately designed model compounds led to consideration of four possible stereoisomers 2-5 as candidates for the correct structure. Accordingly, total syntheses of 2-5 were achieved by taking advantage of the convergent strategy, and comparison of the NMR spectra of synthetic 2-5 with those of the natural product led to the conclusion that 5 shows the correct relative configuration of iriomoteolide-2a. The absolute configuration of this natural product was finally established through chiral HPLC analysis of synthetic 5/ent-5 with the authentic sample. The antiproliferative activity of the synthetic compounds was assessed against HeLa and A549 cells to show that, in contrast to expectation, synthetic 5 and ent-5 were only marginally active in these cell lines. This work clearly underscores the vital role of total synthesis in the establishment of the structure and biological activity of natural products.
Collapse
Affiliation(s)
- Keita Sakamoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan.,Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Akihiro Hakamata
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Arihiro Iwasaki
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kiyotake Suenaga
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Masashi Tsuda
- Center for Advanced Marine Core Research and Department of, Agriculture and Marine Science, Kochi University, Nankoku, Kochi, 783-8502, Japan
| | - Haruhiko Fuwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| |
Collapse
|
5
|
Zhu S, Wu Y. Synthesis and Configuration of Neomaclafungin A. Chem Asian J 2017; 12:2211-2215. [DOI: 10.1002/asia.201700950] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/06/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Shijun Zhu
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovative Center for Chemistry and Life Sciences; Shanghai Institute of Organic Chemistry and the University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Yikang Wu
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovative Center for Chemistry and Life Sciences; Shanghai Institute of Organic Chemistry and the University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| |
Collapse
|
6
|
Guo YA, Zhao M, Xu Z, Ye T. Total Synthesis and Stereochemical Assignment of Actinoranone. Chemistry 2017; 23:3572-3576. [DOI: 10.1002/chem.201700476] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Yi-an Guo
- Key Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Meng Zhao
- Key Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Zhengshuang Xu
- Key Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Tao Ye
- Key Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| |
Collapse
|
7
|
Liao L, Zhou J, Xu Z, Ye T. Concise Total Synthesis of Nannocystin A. Angew Chem Int Ed Engl 2016; 55:13263-13266. [DOI: 10.1002/anie.201606679] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 08/17/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Linping Liao
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Jingjing Zhou
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Zhengshuang Xu
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Tao Ye
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| |
Collapse
|
8
|
Affiliation(s)
- Linping Liao
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Jingjing Zhou
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Zhengshuang Xu
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| | - Tao Ye
- Laboratory of Chemical Genomics; Engineering Laboratory for Chiral Drug Synthesis; School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Xili, Nanshan District Shenzhen 518055 China
| |
Collapse
|
9
|
Grimblat N, Sarotti AM. Computational Chemistry to the Rescue: Modern Toolboxes for the Assignment of Complex Molecules by GIAO NMR Calculations. Chemistry 2016; 22:12246-61. [DOI: 10.1002/chem.201601150] [Citation(s) in RCA: 144] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Nicolas Grimblat
- Instituto de Química Rosario CONICET Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario; Suipacha 531 Rosario 2000) Argentina
| | - Ariel M. Sarotti
- Instituto de Química Rosario CONICET Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario; Suipacha 531 Rosario 2000) Argentina
| |
Collapse
|
10
|
Brütsch TM, Bucher P, Altmann KH. Total Synthesis and Biological Assessment of Mandelalide A. Chemistry 2015; 22:1292-300. [PMID: 26639765 DOI: 10.1002/chem.201504230] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Indexed: 11/11/2022]
Abstract
A new convergent total synthesis of the marine macrolide mandelalide A (1) has been developed that is based on macrocyclic ring closure by a Shiina-type macrolactonization and the construction of the requisite precursor seco acid by a highly efficient Sonogashira cross-coupling reaction between two fragments of comparable complexity. Key steps in the elaboration of the acid building block were the enantioselective, catalytic addition of a protected acetylene to crotonaldehyde and the construction of the tetrahydropyran unit that is embedded in the macrocycle by means of an acid-catalyzed Prins reaction. The synthesis of the alcohol fragment features the formation of the trisubstituted tetrahydrofuran ring through an acetal cleavage/epoxide opening cascade reaction and a rarely used radical alkynylation of a primary alkyl iodide. Intriguingly, the dihydroxylation of a terminal double bond as part of the synthesis of this building block gave the same major product for both the α- and β-AD-mix reagents, albeit with moderate or low selectivity. Synthetic mandelalide A (1) was a potent proliferation inhibitor of A549, HT460, and H1299 human lung cancer cells in vitro, but not of SK-N-SH neuroblastoma cells. However, in no case did we observe complete cell kill even at the highest compound concentration tested (5 μm).
Collapse
Affiliation(s)
- Tobias Michael Brütsch
- Swiss Federal Institute of Technology (ETH) Zürich, Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, HCI H405, Vladimir-Prelog-Weg 4, 8093, Zürich, Switzerland
| | - Pascal Bucher
- Swiss Federal Institute of Technology (ETH) Zürich, Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, HCI H405, Vladimir-Prelog-Weg 4, 8093, Zürich, Switzerland
| | - Karl-Heinz Altmann
- Swiss Federal Institute of Technology (ETH) Zürich, Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, HCI H405, Vladimir-Prelog-Weg 4, 8093, Zürich, Switzerland.
| |
Collapse
|
11
|
Willwacher J, Heggen B, Wirtz C, Thiel W, Fürstner A. Total Synthesis, Stereochemical Revision, and Biological Reassessment of Mandelalide A: Chemical Mimicry of Intrafamily Relationships. Chemistry 2015; 21:10416-30. [PMID: 26094957 DOI: 10.1002/chem.201501491] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Indexed: 11/06/2022]
Abstract
Mandelalide A and three congeners had recently been isolated as the supposedly highly cytotoxic principles of an ascidian collected off the South African coastline. Since these compounds are hardly available from the natural source, a concise synthesis route was developed, targeting structure 1 as the purported representation of mandelalide A. The sequence involves an iridium-catalyzed two-directional Krische allylation and a cobalt-catalyzed carbonylative epoxide opening as entry points for the preparation of the major building blocks. The final stages feature the first implementation of terminal acetylene metathesis into natural product total synthesis, which is remarkable in that this class of substrates had been beyond the reach of alkyne metathesis for decades. Synthetic 1, however, proved not to be identical with the natural product. In an attempt to clarify this issue, NMR spectra were simulated for 20 conceivable diastereomers by using DFT followed by DP4 analysis; however, this did not provide a reliable assignment either. The puzzle was ultimately solved by the preparation of three diastereomers, of which compound 6 proved identical with mandelalide A in all analytical and spectroscopic regards. As the entire "northern sector" about the tetrahydrofuran ring in 6 shows the opposite configuration of what had originally been assigned, it is highly likely that the stereostructures of the sister compounds mandelalides B-D must be corrected analogously; we propose that these natural products are accurately represented by structures 68-70. In an attempt to prove this reassignment, an entry into mandelalides C and D was sought by subjecting an advanced intermediate of the synthesis of 6 to a largely unprecedented intramolecular Morita-Baylis-Hillman reaction, which furnished the γ-lactone derivative 74 as a mixture of diastereomers. Whereas (24R)-74 was amenable to a hydroxyl-directed dihydroxylation by using OsO4 /TMEDA as the reagent, the sister compound (24S)-74 did not follow a directed path but simply obeyed Kishi's rule; only this unexpected escape precluded the preparation of mandelalides C and D by this route. A combined spectroscopic and computational (DFT) study showed that the reasons for this strikingly different behavior of the two diastereomers of 74 are rooted in their conformational peculiarities. This aspect apart, our results show that the OsO4 /TMEDA complex reacts preferentially with electron deficient double bonds even if other alkenes are present that are more electron rich and less encumbered. Finally, in a brief biological survey authentic mandelalide A (6) was found to exhibit appreciable cytotoxicity only against one out of three tested human cancer cell lines and all synthetic congeners were hardly active. No significant fungicidal properties were observed.
Collapse
Affiliation(s)
- Jens Willwacher
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Berit Heggen
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Conny Wirtz
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany)
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr (Germany).
| |
Collapse
|