1
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D'Ambrosio M. The N-Alkylation of Agelastatin A Modulates Its Chemical Reactivity. Molecules 2023; 28:6821. [PMID: 37836663 PMCID: PMC10574546 DOI: 10.3390/molecules28196821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Agelastatin A is a marine alkaloid with potent biological activity. To date, at least 17 different strategies have achieved its total synthesis, along with many analogues. The present study focuses on the acidity stability of some N-methyl derivatives of agelastatin A. The study made use of chemical reactions and spectroscopic acquisitions. The chemical structure of some derivatives can undergo a profound rearrangement. The results could shed light on the mechanism of action of agelastatin A and suggest the preparation of analogues with improved pharmacological efficacy.
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Affiliation(s)
- Michele D'Ambrosio
- Laboratory of Bioorganic Chemistry, Department of Physics, Università degli Studi di Trento, Via Sommarive 14, 38123 Trento, Italy
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2
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Li K, Cui L, Zhang Y, Jian Z. Amide-Functionalized Polyolefins and Facile Post-Transformations. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Kangkang Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Lei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yixin Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhongbao Jian
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
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3
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Affiliation(s)
- Lauren G. O'Neil
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
- Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
| | - John F. Bower
- Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
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4
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Xue H, Svatek H, Bertonha AF, Reisenauer K, Robinson J, Kim M, Ingros A, Ho M, Taube J, Romo D. Synthesis of agelastatin A and derivatives premised on a hidden symmetry element leading to analogs displaying anticancer activity. Tetrahedron 2021; 94. [DOI: 10.1016/j.tet.2021.132340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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O'Neil LG, Bower JF. Electrophilic Aminating Agents in Total Synthesis. Angew Chem Int Ed Engl 2021; 60:25640-25666. [PMID: 33942955 PMCID: PMC9291613 DOI: 10.1002/anie.202102864] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Indexed: 12/12/2022]
Abstract
Classical amination methods involve the reaction of a nitrogen nucleophile with an electrophilic carbon center; however, in recent years, umpoled strategies have gained traction where the nitrogen source acts as an electrophile. A wide range of electrophilic aminating agents are now available, and these underpin a range of powerful C−N bond‐forming processes. In this Review, we highlight the strategic use of electrophilic aminating agents in total synthesis.
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Affiliation(s)
- Lauren G O'Neil
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.,Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - John F Bower
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
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6
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Herath AK, Lovely CJ. Pyrrole carboxamide introduction in the total synthesis of pyrrole-imidazole alkaloids. Org Biomol Chem 2021; 19:2603-2621. [PMID: 33683231 DOI: 10.1039/d0ob02052d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this review various strategies for the incorporation of the signature pyrrole carboxamide moiety in the total syntheses of pyrrole-imidazole alkaloids (PIA) are discussed. These so-called oroidin alkaloids have a broad range of biological activities and display interesting skeletal diversity and complexity. These alkaloids are sponge-derived secondary metabolites and thus far more than 200 members of the PIA family have been isolated over the past few decades. Methods range from classical amide bond forming processes to non-traditional bond formation including the de novo synthesis of the pyrrole itself.
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Affiliation(s)
- Apsara K Herath
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
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7
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Park KHK, Rizzo A, Chen DYK. Late-stage and strain-accelerated oxidation enabled synthesis of haouamine A. Chem Sci 2020; 11:8132-8137. [PMID: 33033612 PMCID: PMC7499817 DOI: 10.1039/d0sc02299c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 06/15/2020] [Indexed: 12/03/2022] Open
Abstract
Herein we report a new synthetic entry to the strained cyclophane alkaloid natural product, haouamine A. The successful strategy featured a rhodium-catalyzed diazo-insertion reaction to install the all-carbon quaternary center and a rhodium-catalyzed intramolecular aziridination reaction to establish the nitrogen-bearing stereocenter, of the target molecule. Most notably, a late-stage, site-selective and strain-accelerated oxidation of a "deoxygenated" macrocyclic intermediate was successfully implemented, and in doing so provided a novel solution to the infamous biphenol cyclophane system of haouamine A.
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Affiliation(s)
- Kun Ho Kenny Park
- Department of Chemistry , Seoul National University , Gwanak-1 Gwanak-ro, Gwanak-gu , Seoul 08826 , South Korea .
| | - Antonio Rizzo
- Department of Chemistry , Seoul National University , Gwanak-1 Gwanak-ro, Gwanak-gu , Seoul 08826 , South Korea .
| | - David Y-K Chen
- Department of Chemistry , Seoul National University , Gwanak-1 Gwanak-ro, Gwanak-gu , Seoul 08826 , South Korea .
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8
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Yoshimitsu T. Chemical Syntheses and Biological Studies of Agelastatin A, a Bioactive Marine Heterocycle Gifted from Nature. HETEROCYCLES 2020. [DOI: 10.3987/rev-20-929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Meng CY, Liang X, Zhang H, Wei K, Yang YR. Stereocontrolled concise synthesis of (±)-halosaline through intramolecular C-H amination. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Dupas A, Lhotellier PA, Guillamot G, Meyer C, Cossy J. Synthesis of Highly Substituted Azepanones from 2 H-Azirines by a Stepwise Annulation/Ring-Opening Sequence. Org Lett 2019; 21:3589-3593. [PMID: 31026165 DOI: 10.1021/acs.orglett.9b00999] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bicyclic aziridines possessing a 1-azabicyclo[4.1.0]heptan-2-one core were prepared from 2 H-azirines by a stepwise annulation sequence involving a diastereoselective allylindanation, an N-acylation, and a ring-closing metathesis to construct the six-membered ring. After hydrogenation or functionalization of the olefin, regioselective ring opening of the resulting azabicyclic compounds with carboxylic acids (or sulfur nucleophiles) afforded highly substituted azepanones possessing an ester moiety or a trifluoromethyl group and a tetrasubstituted carbon at the α and β positions of the nitrogen atom, respectively.
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Affiliation(s)
- Alexandre Dupas
- Molecular, Macromolecular Chemistry, and Materials , ESPCI Paris, CNRS (UMR7167), PSL University , 10 rue Vauquelin , 75231 Paris Cedex 05, France
| | - Pierre-Alexandre Lhotellier
- Molecular, Macromolecular Chemistry, and Materials , ESPCI Paris, CNRS (UMR7167), PSL University , 10 rue Vauquelin , 75231 Paris Cedex 05, France
| | - Gérard Guillamot
- PCAS Porcheville , ZI de Limay, 2-8 rue de Rouen , 78440 Porcheville , France
| | - Christophe Meyer
- Molecular, Macromolecular Chemistry, and Materials , ESPCI Paris, CNRS (UMR7167), PSL University , 10 rue Vauquelin , 75231 Paris Cedex 05, France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry, and Materials , ESPCI Paris, CNRS (UMR7167), PSL University , 10 rue Vauquelin , 75231 Paris Cedex 05, France
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11
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Li D, Ollevier T. Synthesis of Imidazolidinone, Imidazolone, and Benzimidazolone Derivatives through Oxidation Using Copper and Air. Org Lett 2019; 21:3572-3575. [PMID: 31058508 DOI: 10.1021/acs.orglett.9b00973] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new synthetic method of urea derivatives using copper and air was developed. These mild conditions provided moderate to very good yields for 15 examples (53-93%), while low yields were obtained with sterically hindered substrates (3 examples). The reaction was found to go through an in situ generated copper- N-heterocyclic carbene, which was then oxidized into cyclic urea derivatives possessing alkyl, benzyl, aryl, hydroxy, Boc-protected, and tertiary amine groups.
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Affiliation(s)
- Dazhi Li
- Département de chimie , Université Laval , 1045 avenue de la Médecine , Québec , QC , G1V 0A6 , Canada
| | - Thierry Ollevier
- Département de chimie , Université Laval , 1045 avenue de la Médecine , Québec , QC , G1V 0A6 , Canada
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12
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Yoshimitsu T. Strategic Use of Nitrogen Free Radicals in Natural Product Synthesis: Total Synthesis of Agelastatin A. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takehiko Yoshimitsu
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University
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13
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Hong K, Su H, Pei C, Lv X, Hu W, Qiu L, Xu X. Rhodium-Catalyzed Nitrene/Alkyne Metathesis: An Enantioselective Process for the Synthesis of N-Heterocycles. Org Lett 2019; 21:3328-3331. [DOI: 10.1021/acs.orglett.9b01074] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Kemiao Hong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Han Su
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Chao Pei
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xinxin Lv
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Lihua Qiu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xinfang Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
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14
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Hiscox A, Ribeiro K, Batey RA. Lanthanide(III)-Catalyzed Synthesis of trans-Diaminocyclopentenones from Substituted Furfurals and Secondary Amines via a Domino Ring-Opening/4π-Electrocyclization Pathway. Org Lett 2018; 20:6668-6672. [DOI: 10.1021/acs.orglett.8b02711] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Afton Hiscox
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Kauan Ribeiro
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Robert A. Batey
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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15
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Nemoto T. Synthesis of 3,4‐Fused Tricyclic Indoles Using 3‐Alkylidene Indolines as Versatile Precursors. CHEM REC 2018; 19:320-332. [DOI: 10.1002/tcr.201800043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/06/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Tetsuhiro Nemoto
- Graduate School of Pharmaceutical SciencesChiba University 1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
- Molecular Chirality Research CenterChiba University 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
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16
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Su JY, Olson DE, Ting SI, Du Bois J. Synthetic Studies Toward Pactamycin Highlighting Oxidative C-H and Alkene Amination Technologies. J Org Chem 2018; 83:7121-7134. [PMID: 29708344 DOI: 10.1021/acs.joc.8b00142] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A strategy enabled by C-H and alkene amination technologies for synthesizing the aminocyclitol natural product, pactamycin, is disclosed. This work features two disparate approaches for assembling the five-membered ring core of the target, the first of which utilizes acyl anion catalysis and a second involving β-ketoester aerobic hydroxylation. Installation of the C3-N bond, one of three contiguous nitrogen centers, is made possible through Rh-catalyzed allylic C-H amination of a sulfamate ester. Subsequent efforts are presented to introduce the C1,C2 cis-diamino moiety en route to pactamycin, including carbamate-mediated alkene aziridination. In the course of these studies, assembly of the core of C2- epi-pactamycate, which bears the carbon skeleton and all of the requisite nitrogen and oxygen functional groups found in the natural product, has been achieved.
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Affiliation(s)
- Justin Y Su
- Department of Chemistry , Stanford University , 337 Campus Drive , Stanford , California 94305 , United States
| | - David E Olson
- Department of Chemistry , Stanford University , 337 Campus Drive , Stanford , California 94305 , United States
| | - Stephen I Ting
- Department of Chemistry , Stanford University , 337 Campus Drive , Stanford , California 94305 , United States
| | - J Du Bois
- Department of Chemistry , Stanford University , 337 Campus Drive , Stanford , California 94305 , United States
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17
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Inai M, Asakawa T, Kan T. Total synthesis of natural products using a desymmetrization strategy. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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Tsuchimochi I, Kitamura Y, Aoyama H, Akai S, Nakai K, Yoshimitsu T. Total synthesis of (−)-agelastatin A: an SH2′ radical azidation strategy. Chem Commun (Camb) 2018; 54:9893-9896. [PMID: 30083679 DOI: 10.1039/c8cc05697h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic approach to (−)-agelastatin A has been established through the strategic implementation of brominative olefin transposition of a silyl enol ether and subsequent SH2′ radical azidation of the resultant allylic bromide.
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Affiliation(s)
- Izuru Tsuchimochi
- Division of Pharmaceutical Sciences
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
- Okayama University
- Okayama 700-8530
- Japan
| | - Yuta Kitamura
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Osaka 565-0871
- Japan
| | - Hiroshi Aoyama
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Osaka 565-0871
- Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences
- Osaka University
- Osaka 565-0871
- Japan
| | - Keiyo Nakai
- Division of Pharmaceutical Sciences
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
- Okayama University
- Okayama 700-8530
- Japan
| | - Takehiko Yoshimitsu
- Division of Pharmaceutical Sciences
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
- Okayama University
- Okayama 700-8530
- Japan
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19
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Antropow AH, Xu K, Buchsbaum RJ, Movassaghi M. Synthesis and Evaluation of Agelastatin Derivatives as Potent Modulators for Cancer Invasion and Metastasis. J Org Chem 2017; 82:7720-7731. [PMID: 28696693 PMCID: PMC5600481 DOI: 10.1021/acs.joc.7b01162] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The synthesis of new agelastatin alkaloid derivatives and their anticancer evaluation in the context of the breast cancer microenvironment is described. A variety of N1-alkyl and C5-ether agelastatin derivatives were accessed via application of our strategy for convergent imidazolone synthesis from a common thioester along with appropriately substituted urea and alcohol components. These agelastatin derivatives were evaluated in our three-dimensional coculture assay for the effects of mammary fibroblasts on associated breast cancer cells. We have discovered that agelastatin alkaloids are potent modulators for cancer invasion and metastasis at noncytotoxic doses. Herein, we discuss the increased potency of (-)-agelastatin E as compared to (-)-agelastatin A in this capacity, in addition to identification of new agelastatin derivatives with activity that is statistically equivalent to (-)-agelastatin E. The chemistry described in this report provides a platform for the rapid synthesis of agelastatin derivatives with excellent potency (50-100 nM) as modulators for cancer invasion and metastasis.
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Affiliation(s)
- Alyssa H. Antropow
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Kun Xu
- Molecular Oncology Research Institute, Tufts Medical Center, Boston, Massachusetts 02111, USA
| | - Rachel J. Buchsbaum
- Molecular Oncology Research Institute, Tufts Medical Center, Boston, Massachusetts 02111, USA
- Department of Medicine, Tufts Medical Center, Boston, Massachusetts 02111, USA
| | - Mohammad Movassaghi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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20
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Goto A, Yoshimura S, Nakao Y, Inai M, Asakawa T, Egi M, Hamashima Y, Kondo M, Kan T. Synthetic Study on Pactamycin: Stereoselective Synthesis of the Cyclopentane Core Framework. Org Lett 2017; 19:3358-3361. [PMID: 28604005 DOI: 10.1021/acs.orglett.7b01257] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The cyclopentane core framework 23 of pactamycin (1) was synthesized in 14 steps from symmetric cyclohexadiene 11. Our synthetic strategy features Rh-mediated catalytic desymmetrization of 10 via aziridination and then regioselective ring-opening reaction of sulfonylaziridine 9 with NaN3, ring-contraction of cyclohexene 14 by ozonolysis followed by intramolecular aldol reaction, and stereoselective construction of the sequential tetrasubstituted carbons by dihydroxylation and methylation reaction. Stereospecific incorporation of amine on tetrasubstituted carbon was achieved by Curtius rearrangement and subsequent carbamide formation.
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Affiliation(s)
- Atsumi Goto
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Satoshi Yoshimura
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yuta Nakao
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Makoto Inai
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tomohiro Asakawa
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Masahiro Egi
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yoshitaka Hamashima
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Mitsuru Kondo
- Graduate School of Science and Technology, Shizuoka University , 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Toshiyuki Kan
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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21
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Inoue N, Nakano SI, Harada S, Hamada Y, Nemoto T. Synthetic Study of Dragmacidin E: Construction of the Core Structure Using Pd-Catalyzed Cascade Cyclization and Rh-Catalyzed Aminoacetoxylation. J Org Chem 2017; 82:2787-2793. [DOI: 10.1021/acs.joc.7b00083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoya Inoue
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shun-ichi Nakano
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shingo Harada
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yasumasa Hamada
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
- Molecular
Chirality Research Center, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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22
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Yoshimitsu T, Tun HW. Compounds, compositions, and methods of agelastatin alkaloids: patent evaluation of WO2015042239 (A1). Expert Opin Ther Pat 2017; 27:113-119. [PMID: 28056571 DOI: 10.1080/13543776.2017.1273902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Agelastatins are a family of tetracyclic alkaloids isolated from marine sponges. The patent examined in this publication covers the chemical synthesis of agelastatins A to F and eight analogues and their therapeutic use against hematologic malignancies. The claim on the chemical synthesis features a novel biomimetic cyclization of a tricyclic precursor, which streamlines scalable access to agelastatins and their analogues. This new synthetic approach can potentially expedite the research on these compounds for therapeutic use against cancers by making them more easily available. The claim on the therapeutic use against hematologic malignancies is based on the in vitro cytotoxicity against a limited number of cell lines and can be further strengthened by in vivo therapeutic evaluations focusing on specific hematologic malignancies. The comparative evaluation of the cytotoxicities of the natural alkaloids described in the application greatly enhances the understanding of their structure-activity relationships (SARs) relevant to the development of novel medicinal leads. Overall, the patent application is strong and has the potential to advance the rapidly expanding agelastatin research.
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Affiliation(s)
- Takehiko Yoshimitsu
- a Graduate School of Pharmaceutical Sciences , Osaka University , Osaka , Japan
| | - Han W Tun
- b Department of Cancer Biology and Department of Hematology/Oncology , Mayo Clinic Florida , Jacksonville , FL , USA
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23
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Lindel T. Chemistry and Biology of the Pyrrole–Imidazole Alkaloids. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 2017; 77:117-219. [DOI: 10.1016/bs.alkal.2016.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Darses B, Rodrigues R, Neuville L, Mazurais M, Dauban P. Transition metal-catalyzed iodine(iii)-mediated nitrene transfer reactions: efficient tools for challenging syntheses. Chem Commun (Camb) 2017; 53:493-508. [DOI: 10.1039/c6cc07925c] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The main synthetic applications of catalytic C(sp3)–H amination and alkene aziridination reactions are discussed in the context of natural product synthesis. The examples highlight that these synthetic methods now firmly belong in the organic chemist's toolbox.
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Affiliation(s)
- B. Darses
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - R. Rodrigues
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - L. Neuville
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - M. Mazurais
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - P. Dauban
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
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25
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Santhi J, Baire B. N-Iodosuccinimide-Promoted Rapid Access to Indeno[1,2-c]pyrrolesvia[3+2] Annulation of Enamine-alkynes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600711] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jampani Santhi
- Department of Chemistry; Indian Institute of Technology Madras; Chennai - 600036 India
| | - Beeraiah Baire
- Department of Chemistry; Indian Institute of Technology Madras; Chennai - 600036 India
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26
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Jiang H, Lang K, Lu H, Wojtas L, Zhang XP. Intramolecular Radical Aziridination of Allylic Sulfamoyl Azides by Cobalt(II)-Based Metalloradical Catalysis: Effective Construction of Strained Heterobicyclic Structures. Angew Chem Int Ed Engl 2016; 55:11604-8. [PMID: 27511474 PMCID: PMC5014589 DOI: 10.1002/anie.201605238] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 06/25/2016] [Indexed: 01/05/2023]
Abstract
Cobalt(II)-based metalloradical catalysis (MRC) has been successfully applied for effective construction of the highly strained 2-sulfonyl-1,3-diazabicyclo[3.1.0]hexane structures in high yields through intramolecular radical aziridination of allylic sulfamoyl azides. The resulting [3.1.0] bicyclic aziridines prove to be versatile synthons for the preparation of a diverse range of 1,2- and 1,3-diamine derivatives by selective ring-opening reactions. As a demonstration of its application for target synthesis, the metalloradical intramolecular aziridination reaction has been incorporated as a key step for efficient synthesis of a potent neurokinin 1 (NK1 ) antagonist in 60 % overall yield.
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Affiliation(s)
- Huiling Jiang
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Kai Lang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts, 02467, USA
| | - Hongjian Lu
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
- The Institute of Chemistry & Biomedical Sciences, Nanjing University, Nanjing, 210093, P.R. China
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - X Peter Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts, 02467, USA.
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA.
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27
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Jiang H, Lang K, Lu H, Wojtas L, Zhang XP. Intramolecular Radical Aziridination of Allylic Sulfamoyl Azides by Cobalt(II)‐Based Metalloradical Catalysis: Effective Construction of Strained Heterobicyclic Structures. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605238] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Huiling Jiang
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Kai Lang
- Department of Chemistry, Merkert Chemistry Center Boston College Chestnut Hill Massachusetts 02467 USA
| | - Hongjian Lu
- Department of Chemistry University of South Florida Tampa FL 33620 USA
- The Institute of Chemistry & Biomedical Sciences Nanjing University Nanjing 210093 P.R. China
| | - Lukasz Wojtas
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - X. Peter Zhang
- Department of Chemistry, Merkert Chemistry Center Boston College Chestnut Hill Massachusetts 02467 USA
- Department of Chemistry University of South Florida Tampa FL 33620 USA
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28
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Jouanneau M, McClary B, Reyes JCP, Chen R, Chen Y, Plunkett W, Cheng X, Milinichik AZ, Albone EF, Liu JO, Romo D. Derivatization of agelastatin A leading to bioactive analogs and a trifunctional probe. Bioorg Med Chem Lett 2016; 26:2092-7. [PMID: 26951751 DOI: 10.1016/j.bmcl.2016.02.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 02/18/2016] [Indexed: 11/17/2022]
Abstract
(-)-Agelastatin A (AglA, 1), a member of the pyrrole-aminoimidazole marine alkaloid (PAI) family, possesses a unique tetracyclic structure and is one of the most potent anticancer PAIs isolated to date. In efforts to expand the SAR of these agents and delineate sites that tolerate modification while retaining activity, we synthesized several derivatives and tested their anticancer activity. The cytotoxic effects of these derivatives were measured against several cancer cell lines including cervical cancer (HeLa), epidermoid carcinoma (A431), ovarian (Igrov and Ovcar3), osteosarcoma (SJSA1), acute T cell leukemia (A3), epidermoid carcinoma (A431) in addition to primary human chronic lymphocytic leukemia (CLL) cells. New positions for modification of AglA and new substitutions were explored leading to novel derivatives, 14-chloro AglA (3) and 14-methyl AglA (12), that retained activity toward various cancer cell lines with decreased toxicity toward B- and T-cells. The SAR data informed the synthesis of a trifunctional probe bearing an alkyne and a diazirine potentially useful for cellular target identification.
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Affiliation(s)
- Morgan Jouanneau
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA
| | - Brandon McClary
- Department of Pharmacology and Molecular Sciences, John Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD 21205, USA
| | - Jeremy Chris P Reyes
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA
| | - Rong Chen
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Yuling Chen
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - William Plunkett
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Xin Cheng
- Department of Biochemistry Discovery, Morphotek, Inc, 210 Welsh Pool Road, Exton, PA 19341, USA
| | - Andrew Z Milinichik
- Department of Biochemistry Discovery, Morphotek, Inc, 210 Welsh Pool Road, Exton, PA 19341, USA
| | - Earl F Albone
- Department of Biochemistry Discovery, Morphotek, Inc, 210 Welsh Pool Road, Exton, PA 19341, USA
| | - Jun O Liu
- Department of Pharmacology and Molecular Sciences, John Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD 21205, USA
| | - Daniel Romo
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA
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29
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Nambu H, Noda N, Niu W, Fujiwara T, Yakura T. Stereoselective Total Synthesis of Myriocin Using Rhodium(II)-Catalyzed C−H Amination Followed by Alkylation. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500318] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hisanori Nambu
- Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama, Sugitani; Toyama 930-0194 Japan
| | - Narumi Noda
- Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama, Sugitani; Toyama 930-0194 Japan
| | - Wenqi Niu
- Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama, Sugitani; Toyama 930-0194 Japan
| | - Tomoya Fujiwara
- Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama, Sugitani; Toyama 930-0194 Japan
| | - Takayuki Yakura
- Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama, Sugitani; Toyama 930-0194 Japan
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30
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Crossley SWM, Shenvi RA. A Longitudinal Study of Alkaloid Synthesis Reveals Functional Group Interconversions as Bad Actors. Chem Rev 2015; 115:9465-531. [PMID: 26158529 DOI: 10.1021/acs.chemrev.5b00154] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Steven W M Crossley
- Department of Chemistry, The Scripps Research Institute , La Jolla, California 92037, United States
| | - Ryan A Shenvi
- Department of Chemistry, The Scripps Research Institute , La Jolla, California 92037, United States
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31
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Abstract
Naturally occurring guanidine derivatives frequently display medicinally useful properties. Among them, the higher order pyrrole-imidazole alkaloids, the dragmacidins, the crambescidins/batzelladines, and the saxitoxins/tetradotoxins have stimulated the development of many new synthetic methods over the past decades. We provide here an overview of the syntheses of these cyclic guanidine-containing natural products.
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Affiliation(s)
- Yuyong Ma
- Division of Chemistry, Department of Biochemistry, U T Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA
| | - Saptarshi De
- Division of Chemistry, Department of Biochemistry, U T Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA
| | - Chuo Chen
- Division of Chemistry, Department of Biochemistry, U T Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA
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32
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Substrate scope and stereocontrol in the Rh(II)-catalysed oxyamination of allylic carbamates. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Wang X, Ma Z, Wang X, De S, Ma Y, Chen C. Dimeric pyrrole-imidazole alkaloids: synthetic approaches and biosynthetic hypotheses. Chem Commun (Camb) 2014; 50:8628-39. [PMID: 24828265 PMCID: PMC4096073 DOI: 10.1039/c4cc02290d] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The pyrrole-imidazole alkaloids are a group of structurally unique and biologically interesting marine sponge metabolites. Among them, the cyclic dimers have caught synthetic chemists' attention particularly. Numerous synthetic strategies have been developed and various biosynthetic hypotheses have been proposed for these fascinating natural products. We discuss herein the synthetic approaches and the biosynthetic insights obtained from these studies.
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Affiliation(s)
- Xiao Wang
- Division of Chemistry, Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, USA.
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34
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Schulte A, Saito S, Wünsch B. Stereoselective Synthesis ofcis,cis-Configured Vicinal Triamines. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402685] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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35
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Jang ES, McMullin CL, Käß M, Meyer K, Cundari TR, Warren TH. Copper(II) Anilides in sp3 C-H Amination. J Am Chem Soc 2014; 136:10930-40. [DOI: 10.1021/ja5026547] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eun Sil Jang
- Department
of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Claire L. McMullin
- Department
of Chemistry, Center for Advanced Scientific Computing and Modeling
(CASCaM), University of North Texas, Denton, Texas 76203, United States
| | - Martina Käß
- Department
of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse
1, 91058 Erlangen, Germany
| | - Karsten Meyer
- Department
of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse
1, 91058 Erlangen, Germany
| | - Thomas R. Cundari
- Department
of Chemistry, Center for Advanced Scientific Computing and Modeling
(CASCaM), University of North Texas, Denton, Texas 76203, United States
| | - Timothy H. Warren
- Department
of Chemistry, Georgetown University, Box 571227-1227, Washington, D.C. 20057, United States
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
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36
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Stout EP, Choi MY, Castro JE, Molinski TF. Potent fluorinated agelastatin analogues for chronic lymphocytic leukemia: design, synthesis, and pharmacokinetic studies. J Med Chem 2014; 57:5085-93. [PMID: 24673739 PMCID: PMC4079331 DOI: 10.1021/jm4016922] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is the most common lymphoid neoplasia in Western societies and is currently incurable. Multiple treatment options are practiced, but the available small molecule drugs suffer from dose-limiting toxicity and undesirable side effects. The need for new, less toxic treatments is a pressing concern. Here, we demonstrate that (-)-agelastatin A (1a), a pyrrole-imidazole alkaloid obtained from a marine sponge, exhibits potent in vitro activity against primary cell lines of CLL and disclose the synthesis of several analogues that are equipotent or exceed the potency of the natural product. The novel synthetic analogue, 13-debromo-13-trifluoromethyl agelastatin A (1j), showed higher activity than the natural product when tested against the same cell lines and is the most potent agelastatin derivative reported to date. A detailed in vitro structure-activity relationship of 1a in CLL compared to that of 22 synthetic analogues is described along with preliminary in vivo pharmacokinetic and metabolism studies on the most potent compounds.
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Affiliation(s)
- E Paige Stout
- Department of Chemistry and Biochemistry, ‡Skaggs School of Pharmacy and Pharmaceutical Sciences, §Moores Cancer Center, and ⊥School of Medicine, University of California, San Diego , 9500 Gilman Drive, La Jolla, California 92093-0358, United States
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37
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Wang H, Li Y, Wang Z, Lou J, Xiao Y, Qiu G, Hu X, Altenbach HJ, Liu P. Iron-catalyzed efficient intermolecular amination of C(sp3)–H bonds with bromamine-T as nitrene source. RSC Adv 2014. [DOI: 10.1039/c4ra02240h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
[Fe(N4Py)(CH3CN)](ClO4)2 can efficiently catalyze intermolecular nitrene insertion of sp3 C–H bonds with bromamine-T as the nitrene source, forming the desired tosylprotected amines with NaBr as the by-product.
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Affiliation(s)
- Haiyu Wang
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
| | - Yuxi Li
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
| | - Zhiming Wang
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
| | - Jun Lou
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
| | - Yuling Xiao
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
| | - Guofu Qiu
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
| | - Xianming Hu
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
| | | | - Peng Liu
- State Key Laboratory of Virology
- Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University
- School of Pharmaceutical Sciences
- Wuhan University
- Wuhan, China
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38
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Han S, Siegel DS, Morrison KC, Hergenrother PJ, Movassaghi M. Synthesis and anticancer activity of all known (-)-agelastatin alkaloids. J Org Chem 2013; 78:11970-84. [PMID: 24152243 PMCID: PMC3920459 DOI: 10.1021/jo4020112] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The full details of our enantioselective total syntheses of (-)-agelastatins A-F (1-6), the evolution of a new methodology for synthesis of substituted azaheterocycles, and the first side-by-side evaluation of all known (-)-agelastatin alkaloids against nine human cancer cell lines are described. Our concise synthesis of these alkaloids exploits the intrinsic chemistry of plausible biosynthetic precursors and capitalizes on a late-stage synthesis of the C-ring. The critical copper-mediated cross-coupling reaction was expanded to include guanidine-based systems, offering a versatile preparation of substituted imidazoles. The direct comparison of the anticancer activity of all naturally occurring (-)-agelastatins in addition to eight advanced synthetic intermediates enabled a systematic analysis of the structure-activity relationship within the natural series. Significantly, (-)-agelastatin A (1) is highly potent against six blood cancer cell lines (20-190 nM) without affecting normal red blood cells (>333 μM). (-)-Agelastatin A (1) and (-)-agelastatin D (4), the two most potent members of this family, induce dose-dependent apoptosis and arrest cells in the G2/M-phase of the cell cycle; however, using confocal microscopy, we have determined that neither alkaloid affects tubulin dynamics within cells.
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Affiliation(s)
- Sunkyu Han
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Dustin S. Siegel
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Karen C. Morrison
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Paul J. Hergenrother
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Mohammad Movassaghi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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39
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A Short Total Synthesis of the Marine Sponge Pyrrole-2-aminoimidazole Alkaloid (±)-Agelastatin A. Angew Chem Int Ed Engl 2013; 52:10862-6. [DOI: 10.1002/anie.201304759] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Indexed: 01/16/2023]
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40
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Duspara PA, Batey RA. A Short Total Synthesis of the Marine Sponge Pyrrole-2-aminoimidazole Alkaloid (±)-Agelastatin A. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304759] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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41
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Shigeoka D, Kamon T, Yoshimitsu T. Formal synthesis of (-)-agelastatin A: an iron(II)-mediated cyclization strategy. Beilstein J Org Chem 2013; 9:860-5. [PMID: 23766801 PMCID: PMC3678661 DOI: 10.3762/bjoc.9.99] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Accepted: 04/10/2013] [Indexed: 12/20/2022] Open
Abstract
An iron(II)-mediated aminohalogenation of a cyclopentenyl N-tosyloxycarbamate provided new access to the key intermediate for the synthesis of (-)-agelastatin A (AA, 1), a potent antiproliferative alkaloid. The present synthetic endeavour offered an insight into the mechanism underlying the iron(II)-mediated aminohalogenation of N-tosyloxycarbamate, in which the radical properties of the N-iron intermediates in the redox states were operative.
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Affiliation(s)
- Daisuke Shigeoka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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42
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Li Z, Shigeoka D, Caulfield TR, Kawachi T, Qiu Y, Kamon T, Arai M, Tun HW, Yoshimitsu T. An integrated approach to the discovery of potent agelastatin A analogues for brain tumors: chemical synthesis and biological, physicochemical and CNS pharmacokinetic analyses. MEDCHEMCOMM 2013. [DOI: 10.1039/c3md00094j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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43
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Fernando R, Shirley JM, Torres E, Jacobs HK, Gopalan AS. Preparation of bifunctional isocyanate hydroxamate linkers: Synthesis of carbamate and urea tethered polyhydroxamic acid chelators. Tetrahedron Lett 2012; 53:6367-6371. [PMID: 23162172 PMCID: PMC3498463 DOI: 10.1016/j.tetlet.2012.09.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Two novel bifunctional N-methylhydroxamate-isocyanate linkers 20 and 21 were prepared in good yield and high purity from the corresponding amine salts using a biphasic reaction with phosgene. The facile ring opening reaction of N-Boc lactams using the anion of O-benzylhydroxylamine gave the protected amino hydroxamates 6a and 6c in good yields. The selective methylation of the hydroxamate nitrogen in the presence of the N-Boc group in these intermediates could be readily accomplished. The utility of the linkers was clearly demonstrated by the synthesis of the carbamate-tethered trishydroxamic acid 27 and the urea-tethered 29.
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Affiliation(s)
- Rasika Fernando
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003-8001
| | - Jonathan M. Shirley
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003-8001
| | - Emilio Torres
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003-8001
| | - Hollie K. Jacobs
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003-8001
| | - Aravamudan S. Gopalan
- Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003-8001
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44
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Cohen DT, Eichman CC, Phillips EM, Zarefsky ER, Scheidt KA. Catalytic dynamic kinetic resolutions with N-heterocyclic carbenes: asymmetric synthesis of highly substituted β-lactones. Angew Chem Int Ed Engl 2012; 51:7309-13. [PMID: 22700327 PMCID: PMC3489928 DOI: 10.1002/anie.201203382] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Indexed: 11/11/2022]
Abstract
New DKR type: An N-heterocyclic carbene (NHC)-catalyzed dynamic kinetic resolution of racemic α-substituted β-keto esters has been developed. This method relies on the epimerization of an NHC-enol intermediate before subsequent aldol/acylation events. Highly substituted β-lactones are produced in good yield with good to excellent selectivities (see scheme).
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Affiliation(s)
- Daniel T. Cohen
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chemistry of Life Processes Institute Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
| | - Chad C. Eichman
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chemistry of Life Processes Institute Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
| | - Eric M. Phillips
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chemistry of Life Processes Institute Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
| | - Emily R. Zarefsky
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chemistry of Life Processes Institute Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
| | - Karl A. Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chemistry of Life Processes Institute Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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45
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Reyes JCP, Romo D. Bioinspired total synthesis of agelastatin A. Angew Chem Int Ed Engl 2012; 51:6870-3. [PMID: 22689447 PMCID: PMC3815442 DOI: 10.1002/anie.201200959] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 05/01/2012] [Indexed: 11/11/2022]
Abstract
A one-two punch: two potentially biosynthetically relevant cyclizations of a keramadine analogue give agelastatin A. A diastereoselective C-ring formation, which proceeds through a 5-exo-trig cyclization or a Nazarov cyclization of a red-colored N-acyliminium intermediate, generates the three contiguous stereocenters of the cyclopentane core. A silica gel assisted cyclization of a nagelamide J analogue gives agelastatin A.
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Affiliation(s)
| | - Daniel Romo
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012 (USA), , Homepage: http://www.chem.tamu.edu/rgroup/romo
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Musaev DG, Blakey SB. Insight into Mechanistic Features of Ruthenium(II)–Pybox-Catalyzed C–H Amination. Organometallics 2012. [DOI: 10.1021/om300153q] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Djamaladdin G. Musaev
- Cherry L. Emerson Center for Scientific
Computation and Department of Chemistry, Emory University, 1515 Dickey Drive,
Atlanta, Georgia 30322, United States
| | - Simon B. Blakey
- Cherry L. Emerson Center for Scientific
Computation and Department of Chemistry, Emory University, 1515 Dickey Drive,
Atlanta, Georgia 30322, United States
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ROIZEN JENNIFERL, HARVEY MARKEDWIN, DU BOIS J. Metal-catalyzed nitrogen-atom transfer methods for the oxidation of aliphatic C-H bonds. Acc Chem Res 2012; 45:911-22. [PMID: 22546004 PMCID: PMC5483381 DOI: 10.1021/ar200318q] [Citation(s) in RCA: 714] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
For more than a century, chemists have endeavored to discover and develop reaction processes that enable the selective oxidation of hydrocarbons. In the 1970s, Abramovitch and Yamada described the synthesis and electrophilic reactivity of sulfonyliminoiodinanes (RSO(2)N═IPh), demonstrating the utility of this new class of reagents to function as nitrene equivalents. Subsequent investigations by Breslow, Mansuy, and Müller would show such oxidants to be competent for alkene and saturated hydrocarbon functionalization when combined with transition metal salts or metal complexes, namely those of Mn, Fe, and Rh. Here, we trace our own studies to develop N-atom transfer technologies for C-H and π-bond oxidation. This Account discusses advances in both intra- and intermolecular amination processes mediated by dirhodium and diruthenium complexes, as well as the mechanistic foundations of catalyst reactivity and arrest. Explicit reference is given to questions that remain unanswered and to problem areas that are rich for discovery. A fundamental advance in amination technology has been the recognition that iminoiodinane oxidants can be generated in situ in the presence of a metal catalyst that elicits subsequent N-atom transfer. Under these conditions, both dirhodium and diruthenium lantern complexes function as competent catalysts for C-H bond oxidation with a range of nitrogen sources (e.g., carbamates, sulfamates, sulfamides, etc.), many of which will not form isolable iminoiodinane equivalents. Practical synthetic methods and applications thereof have evolved in parallel with inquiries into the operative reaction mechanism(s). For the intramolecular dirhodium-catalyzed process, the body of experimental and computational data is consistent with a concerted asynchronous C-H insertion pathway, analogous to the consensus mechanism for Rh-carbene transfer. Other studies reveal that the bridging tetracarboxylate ligand groups, which shroud the dirhodium core, are labile to exchange under standard reaction conditions. This information has led to the generation of chelating dicarboxylate dinuclear rhodium complexes, exemplified by Rh(2)(esp)(2). The performance of this catalyst system is unmatched by other dirhodium complexes in both intra- and intermolecular C-H amination reactions. Tetra-bridged, mixed-valent diruthenium complexes function as effective promoters of sulfamate ester oxidative cyclization. These catalysts can be crafted with ligand sets other than carboxylates and are more resistant to oxidation than their dirhodium counterparts. A range of experimental and computational mechanistic data amassed with the tetra-2-oxypyridinate diruthenium chloride complex, [Ru(2)(hp)(4)Cl], has established the insertion event as a stepwise pathway involving a discrete radical intermediate. These data contrast dirhodium-catalyzed C-H amination and offer a cogent model for understanding the divergent chemoselectivity trends observed between the two catalyst types. This work constitutes an important step toward the ultimate goal of achieving predictable, reagent-level control over product selectivity.
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Affiliation(s)
| | | | - J. DU BOIS
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
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Cohen DT, Eichman CC, Phillips EM, Zarefsky ER, Scheidt KA. Catalytic Dynamic Kinetic Resolutions with N-Heterocyclic Carbenes: Asymmetric Synthesis of Highly Substituted β-Lactones. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203382] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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Singh R, Vince R. 2-Azabicyclo[2.2.1]hept-5-en-3-one: Chemical Profile of a Versatile Synthetic Building Block and its Impact on the Development of Therapeutics. Chem Rev 2012; 112:4642-86. [DOI: 10.1021/cr2004822] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rohit Singh
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
| | - Robert Vince
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
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