1
|
Albano G, Morelli M, Lissia M, Aronica LA. Synthesis of Functionalised Indoline and Isoquinoline Derivatives through a Silylcarbocyclisation/Desilylation Sequence. ChemistrySelect 2019. [DOI: 10.1002/slct.201900524] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Martina Morelli
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Margherita Lissia
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Laura A. Aronica
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| |
Collapse
|
2
|
Beveridge RE, Batey RA. Total synthesis of the cytotoxic enehydrazide natural products hydrazidomycins A and B by a carbazate addition/Peterson olefination approach. Org Lett 2013; 15:3086-9. [PMID: 23734814 DOI: 10.1021/ol401275f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total syntheses of two natural antitumor enehydrazide compounds (hydrazidomycins A and B) and a related positional isomer of hydrazidomycin B (elaiomycin B) have been accomplished in a rapid and stereocontrolled fashion using a Peterson elimination approach. A regioselective silyl epoxide ring opening reaction with Boc-carbazate followed by base-mediated Peterson siloxide elimination stereospecifically installed the key Z-enehydrazide functionality. The use of Boc-carbazate allowed for the differential functionalization of the hydrazide nitrogens.
Collapse
Affiliation(s)
- Ramsay E Beveridge
- Davenport Research Laboratories, Department of Chemistry, University of Toronto , 80 St. George Street, Toronto ON, Canada
| | | |
Collapse
|
3
|
Yang L, Lei CH, Wang DX, Huang ZT, Wang MX. Highly efficient and expedient synthesis of 5-hydroxy-1H-pyrrol-2-(5H)-ones from FeCl3-catalyzed tandem intramolecular enaminic addition of tertiary enamides to ketones and 1,3-hydroxy rearrangement. Org Lett 2010; 12:3918-21. [PMID: 20698503 DOI: 10.1021/ol101607z] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Catalyzed by FeCl(3) under very mild conditions, tertiary enamides underwent a highly efficient intramolecular enaminic addition reaction to the ketonic carbonyls followed by 1,3-hydroxy rearrangement to produce 5-hydroxy-1H-pyrrol-2(5H)-ones in excellent yields.
Collapse
Affiliation(s)
- Luo Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | | | | | | | | |
Collapse
|
4
|
Min GK, Hernández D, Lindhardt AT, Skrydstrup T. Enamides Accessed from Aminothioesters via a Pd(0)-Catalyzed Decarbonylative/β-Hydride Elimination Sequence. Org Lett 2010; 12:4716-9. [DOI: 10.1021/ol101620r] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Geanna K. Min
- Center of Insoluble Protein Structures (InSpin), Department of Chemistry, and Interdispliscinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C., Denmark
| | - Dácil Hernández
- Center of Insoluble Protein Structures (InSpin), Department of Chemistry, and Interdispliscinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C., Denmark
| | - Anders T. Lindhardt
- Center of Insoluble Protein Structures (InSpin), Department of Chemistry, and Interdispliscinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C., Denmark
| | - Troels Skrydstrup
- Center of Insoluble Protein Structures (InSpin), Department of Chemistry, and Interdispliscinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C., Denmark
| |
Collapse
|
5
|
Evano G, Blanchard N, Toumi M. Copper-mediated coupling reactions and their applications in natural products and designed biomolecules synthesis. Chem Rev 2008; 108:3054-131. [PMID: 18698737 DOI: 10.1021/cr8002505] [Citation(s) in RCA: 1690] [Impact Index Per Article: 105.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Gwilherm Evano
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint Quentin en Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex, France.
| | | | | |
Collapse
|
6
|
Yang L, Deng G, Wang DX, Huang ZT, Zhu JP, Wang MX. Highly efficient and stereoselective N-vinylation of oxiranecarboxamides and unprecedented 8-endo-epoxy-arene cyclization: expedient and biomimetic synthesis of some Clausena alkaloids. Org Lett 2007; 9:1387-90. [PMID: 17335229 DOI: 10.1021/ol070292+] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text]. Catalyzed by CuI/N,N-dimethylglycine, oxiranecarboxamides underwent a highly efficient and stereoselective N-vinylation reaction with (Z)-1-aryl-2-bromoethenes to afford the corresponding enamides. The method has been applied to a straightforward synthesis of (-)-(2R,3S)-SB204900, the enantiomer of the natural product. Following a hypothetic biomimetic pathway, both (+)-(5R,6S)-xi-Clausenamide and (-)-(5R,6S)-balasubramide have been efficiently synthesized for the first time through the unprecedented intramolecular 8-endo-epoxy-arene cyclization of (Z)-N-(phenylvinyl)oxiranecarboxamides.
Collapse
Affiliation(s)
- Luo Yang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | | | | | | | | | | |
Collapse
|
7
|
Picard JP. Silylmethylamines and Their Derivatives: Chemistry and Biological Activities. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2004. [DOI: 10.1016/s0065-3055(04)52004-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
8
|
Jiang L, Job GE, Klapars A, Buchwald SL. Copper-Catalyzed Coupling of Amides and Carbamates with Vinyl Halides. Org Lett 2003; 5:3667-9. [PMID: 14507200 DOI: 10.1021/ol035355c] [Citation(s) in RCA: 330] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A general and efficient copper-catalyzed method for the amidation of vinyl bromides and iodides has been developed. This protocol uses a combination of 5 mol % copper iodide and 20 mol % N,N'-dimethyl ethylenediamine. Substrates bearing ester, silyl ether, and amino groups were successfully coupled under the reaction conditions. The double bond geometry of the vinyl halides was retained under the reaction conditions.
Collapse
Affiliation(s)
- Lei Jiang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | | | | | | |
Collapse
|
9
|
Shen R, Lin CT, Bowman EJ, Bowman BJ, Porco JA. Lobatamide C: total synthesis, stereochemical assignment, preparation of simplified analogues, and V-ATPase inhibition studies. J Am Chem Soc 2003; 125:7889-901. [PMID: 12823009 DOI: 10.1021/ja0352350] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The total synthesis and stereochemical assignment of the potent antitumor macrolide lobatamide C, as well as synthesis of simplified lobatamide analogues, is reported. Cu(I)-mediated enamide formation methodology has been developed to prepare the highly unsaturated enamide side chain of the natural product and analogues. A key fragment coupling employs base-mediated esterification of a beta-hydroxy acid and a salicylate cyanomethyl ester. Three additional stereoisomers of lobatamide C have been prepared using related synthetic routes. The stereochemistry at C8, C11, and C15 of lobatamide C was assigned by comparison of stereoisomers and X-ray analysis of a crystalline derivative. Synthetic lobatamide C, stereoisomers, and simplified analogues have been evaluated for inhibition of bovine chromaffin granule membrane V-ATPase. The salicylate phenol, enamide NH, and ortho-substitution of the salicylate ester have been shown to be important for V-ATPase inhibitory activity.
Collapse
Affiliation(s)
- Ruichao Shen
- Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
| | | | | | | | | |
Collapse
|
10
|
Deniau E, Enders D. A new and versatile synthetic route to 2-dimethylamino-3-alkyl and arylmethylene-2,3-dihydro-1H-isoindol-1-ones. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01972-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
11
|
Abstract
Bis(trimethylsilyl)methylamine, BSMA, an original primary amine, was proven to be the source of a large variety of N-bis(trimethylsilyl)methylamino derivatives that otherwise have to be prepared indirectly. Because of the bulkiness of the bissilylmethyl group, regio- and stereoselectivities resulted in appropriated examples. Apart from the potential biological properties associated with the Si-C-N framework, these derivatives were powerful synthetic intermediates. Special emphasis was given to the chemistry of corresponding imines. Cleavage of SiC bonds or abstraction of the methine proton afforded α-nitrogen carbanions in very mild conditions. Application of these results to the β-lactam chemistry allowed the introduction of new synthetic methodologies in this field. It results the (Me3Si)2CH- group could now be regarded as a Me3SiCH2- or a CH3- group or a proton equivalent.Key words: bis(silyl)methylamine, preparations, reactivity, nitrogen heterocycles, α-nitrogen carbanions.
Collapse
|
12
|
Synthesis of enamides related to the salicylate antitumor macrolides using copper-mediated vinylic substitution. Org Lett 2000; 2:1333-6. [PMID: 10810741 DOI: 10.1021/ol005800t] [Citation(s) in RCA: 176] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[formula: see text] A new approach to the assembly of enamides is described using copper(I) carboxylate-catalyzed substitution of vinyl iodides and amides. Modified reaction conditions have been developed to synthesize the O-methyloxime enamide side chains related to the natural products lobatamides A-F, oximidine I and II, and CJ-12,950.
Collapse
|
13
|
Réactivité du 3,3-bis(triméthylsilyl)propène vis-à-vis des ions iminium issus d’amines primaires. Accès à des hétérocycles azotés. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00474-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
14
|
Morzycki JW, Łotowski Z, Stȩpniowska M, Gryszkiewicz A, Wilczewska AZ. Nitration of N-acetyl enamines with acetyl nitrate. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)10074-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
15
|
Palomo C, Aizpurua JM, Legido M, Mielgo A, Galarza R. A Contribution to the Asymmetric Synthesis of 3-Amino β-Lactams: The Diastereoselective [2+2] Cycloaddition Reaction of Chiral Aminoketene Equivalents with Enolizable Aldehyde-Derived Imines. Chemistry 1997. [DOI: 10.1002/chem.19970030909] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
16
|
Palomo C, Aizpurua JM, García JM, Galarza R, Legido M, Urchegui R, Román P, Luque A, Server-Carrió J, Linden A. Construction of Quaternary Stereogenic Centers via [2 + 2] Cycloaddition Reactions. Synthesis of Homochiral 4,4-Disubstituted 2-Azetidinones and Imine Substituent Effects on beta-Lactam Formation. J Org Chem 1997; 62:2070-2079. [PMID: 11671511 DOI: 10.1021/jo962017z] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A study on the asymmetric construction of quaternary stereogenic centers via [2 + 2] cycloaddition reaction of ketenes with ketimines is described. Reaction of achiral ketenes and chiral alpha-alkoxy ketone-derived imines resulted in formation of new beta-lactams as single diastereomers. The cycloaddition was extended to pyruvate imines, aralkyl ketone-derived imines, and dialkyl ketimines. In these cases the asymmetric induction was satisfactorily achieved using beta-silylalkanoyl ketenes and the Evans-Sjögren ketene. C,C-Bis (trimethylsilyl)methylamine ketimines derived from enolizable dialkyl ketones cleanly led to the corresponding C(4) disubstituted beta-lactams without deprotonation. Therefore, a general methodology for a convergent asymmetric synthesis of beta-lactams in which C(4) exists as a quaternary carbon is provided.
Collapse
Affiliation(s)
- Claudio Palomo
- Departamento de Química Orgánica, Facultad de Química, Universidad del Pais Vasco, Apdo 1072, 20080 San Sebastián, Spain, Departamento de Química Inorgánica, Universidad del Pais Vasco, Apdo 644, 48080 Bilbao, Spain, and Organisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Dramatically different photochemical behaviour of 1-aroyl-2-methylene piperidine and pyrrolidine derivatives. An expeditious synthesis of ruspolinone. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)01765-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
18
|
Palomo C, Aizpurua JM, Legido M, Galarza R, Deya PM, Dunoguès J, Picard JP, Ricci A, Seconi G. Auswirkungen der Substituenten am Imin auf die [2+2]-Cycloaddition mit Ketenen. Angew Chem Int Ed Engl 1996. [DOI: 10.1002/ange.19961081117] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
19
|
Couture A, Deniau E, Grandclaudon P. A convenient synthesis of enamides and dienamides by Horner-Wittig and Wadsworth-Emmons reactions. Tetrahedron Lett 1993. [DOI: 10.1016/s0040-4039(00)60323-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|