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Chen W, Ma Y, He W, Wu Y, Huang Y, Zhang Y, Tian H, Wei K, Yang X, Zhang H. Structure units oriented approach towards collective synthesis of sarpagine-ajmaline-koumine type alkaloids. Nat Commun 2022; 13:908. [PMID: 35177620 PMCID: PMC8854706 DOI: 10.1038/s41467-022-28535-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 01/21/2022] [Indexed: 12/26/2022] Open
Abstract
Sarpagine-Ajmaline-Koumine type monoterpenoid indole alkaloids represent a fascinating class of natural products with polycyclic and cage-like structures, interesting biological activities, and related biosynthetic origins. Herein we report a unified approach towards the asymmetric synthesis of these three types of alkaloids, leading to a collective synthesis of 14 natural alkaloids. Among them, akuammidine, 19-Z-akuammidine, vincamedine, vincarine, quebrachidine, vincamajine, alstiphylianine J, and dihydrokoumine are accomplished for the first time. Features of our synthesis are a new Mannich-type cyclization to construct the key indole-fused azabicyclo[3.3.1]nonane common intermediate, a SmI2 mediated coupling to fuse the aza-bridged E-ring, stereoselective olefinations to install either the 19-E or 19-Z terminal alkenes presented in the natural alkaloids, and an efficient iodo-induced cyclization to establish the two vicinal all-carbon quaternary centers in the Koumine-type alkaloids.
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Affiliation(s)
- Wen Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Yonghui Ma
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Wenyan He
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Yinxia Wu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Yuancheng Huang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Yipeng Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Hongchang Tian
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Kai Wei
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China.
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China.
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2
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Sinast M, Zuccolo M, Wischnat J, Sube T, Hasnik F, Baro A, Dallavalle S, Laschat S. Samarium Iodide-Promoted Asymmetric Reformatsky Reaction of 3-(2-Haloacyl)-2-oxazolidinones with Enals. J Org Chem 2019; 84:10050-10064. [PMID: 31343175 DOI: 10.1021/acs.joc.9b01219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
3-(2-Haloacyl)-2-oxazolidinones were shown to react with enals in an asymmetric SmI2-promoted Reformatsky reaction to give stereochemically well-defined 3-hydroxy-4-alkenyl- and 3-hydroxy-2-methyl-4-alkenyl imides. Chirality transfer of the Evans (S)-oxazolidinone unit via a Zimmerman-Traxler-like transition state resulted in Reformatsky products with a relative syn-configuration. The absolute configuration of compounds obtained is opposite to the corresponding products obtained via aldol addition of boron enolates to enals using the same Evans oxazolidinones.
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Affiliation(s)
- Moritz Sinast
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Marco Zuccolo
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany.,Department of Food, Environmental and Nutritional Sciences , Università degli Studi di Milano , Via Celoria 2 , 20133 Milano , Italy
| | - Jonathan Wischnat
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Tobias Sube
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Fabian Hasnik
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Angelika Baro
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Sabrina Dallavalle
- Department of Food, Environmental and Nutritional Sciences , Università degli Studi di Milano , Via Celoria 2 , 20133 Milano , Italy
| | - Sabine Laschat
- Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
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3
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Magnetic field effect on the structural properties of a peptide model: Molecular dynamics simulation study. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.02.059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Scaffolded multimers of hIAPP20–29 peptide fragments fibrillate faster and lead to different fibrils compared to the free hIAPP20–29 peptide fragment. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1854:1890-1897. [DOI: 10.1016/j.bbapap.2015.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 08/07/2015] [Accepted: 08/10/2015] [Indexed: 12/17/2022]
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5
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Pauli D, Bienz S. Regioselective solid-phase synthesis of N-mono-hydroxylated and N-mono-methylated acylpolyamine spider toxins using an 2-(ortho-nitrophenyl)ethanal-modified resin. Org Biomol Chem 2015; 13:4473-85. [PMID: 25773373 DOI: 10.1039/c5ob00108k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A recently introduced new SPS resin, possessing a 2-(ortho-nitrophenyl)ethanal linker, was used for the regioselective on-resin synthesis of N-mono-hydroxylated and N-mono-methylated polyamine spider toxins of Agelenopsis aperta and Larinioides folium. The polyamine backbones of the target compounds were efficiently constructed from the center by reductive amination of the aldehyde linker, followed by stepwise alkylation and acylation on solid support. Depending on the cleavage conditions, employing either oxidation/Cope elimination or methylation/Hofmann elimination, regioselectively the respective N-hydroxyl or N-methyl products were obtained. Employing this methodology, a number of acylpolyamine spider toxins were synthesized and identified as venom components by UHPLC and ESI-MS/MS.
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Affiliation(s)
- Denise Pauli
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
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6
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Budnjo A, Narawane S, Grauffel C, Schillinger AS, Fossen T, Reuter N, Haug BE. Reversible ketomethylene-based inhibitors of human neutrophil proteinase 3. J Med Chem 2014; 57:9396-408. [PMID: 25365140 DOI: 10.1021/jm500782s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Neutrophil serine proteases, proteinase 3 (PR3) and human neutrophil elastase (HNE), are considered as targets for chronic inflammatory diseases. Despite sharing high sequence similarity, the two enzymes have different substrate specificities and functions. While a plethora of HNE inhibitors exist, PR3 specific inhibitors are still in their infancy. We have designed ketomethylene-based inhibitors for PR3 that show low micromolar IC50 values. Their synthesis was made possible by amending a previously reported synthesis of ketomethylene dipeptide isosteres to allow for the preparation of derivatives suitable for solid phase peptide synthesis. The best inhibitor (Abz-VADnV[Ψ](COCH2)ADYQ-EDDnp) was found to be selective for PR3 over HNE and to display a competitive and reversible inhibition mechanism. Molecular dynamics simulations show that the interactions between enzyme and ketomethylene-containing inhibitors are similar to those with the corresponding substrates. We also confirm that N- and C-terminal FRET groups are important for securing high inhibitory potency toward PR3.
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Affiliation(s)
- Adnan Budnjo
- Department of Chemistry and Centre for Pharmacy, University of Bergen , Allégaten 41, 5007 Bergen, Norway
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Szostak M, Fazakerley NJ, Parmar D, Procter DJ. Cross-Coupling Reactions Using Samarium(II) Iodide. Chem Rev 2014; 114:5959-6039. [DOI: 10.1021/cr400685r] [Citation(s) in RCA: 290] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Michal Szostak
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Neal J. Fazakerley
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Dixit Parmar
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - David J. Procter
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
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Andreasen M, Nielsen SB, Mittag T, Bjerring M, Nielsen JT, Zhang S, Nielsen EH, Jeppesen M, Christiansen G, Besenbacher F, Dong M, Nielsen NC, Skrydstrup T, Otzen DE. Modulation of fibrillation of hIAPP core fragments by chemical modification of the peptide backbone. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2012; 1824:274-85. [DOI: 10.1016/j.bbapap.2011.10.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 10/14/2011] [Accepted: 10/24/2011] [Indexed: 11/30/2022]
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9
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Szostak M, Spain M, Parmar D, Procter DJ. Selective reductive transformations using samarium diiodide-water. Chem Commun (Camb) 2012; 48:330-46. [DOI: 10.1039/c1cc14252f] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Hernández D, Lindsay KB, Nielsen L, Mittag T, Bjerglund K, Friis S, Mose R, Skrydstrup T. Further studies toward the stereocontrolled synthesis of silicon-containing peptide mimics. J Org Chem 2010; 75:3283-93. [PMID: 20423092 DOI: 10.1021/jo100301n] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Further studies are reported on the utilization of the versatile reaction between chiral sulfinimines and alkyldiphenylsilyl lithium reagents with the goal of preparing a wide range of silanediol-based protease inhibitors. In particular, focus has been placed to demonstrate how a number of genetically encoded amino acid side chains such as serine, threonine, tyrosine, lysine, proline, arginine, aspartate and asparagine might be incorporated into the overall approach. Efforts to apply this synthetic methodology for accessing biologically relevant silanediol dipeptide mimics are also described. This includes the synthesis of a potential inhibitor of the human neutrophil elastase, as well as a diphenylsilane mimic of a hexapeptide fragment of the human islet amyloid polypeptide.
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Affiliation(s)
- Dácil Hernández
- Center for Insoluble Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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