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Lin H, Chiang T, Wu R, Chang Y, Wang H, Liu S, Yeh MP. Synthesis of Halogenated Cyclic Enamines from Cyclic
N‐
2‐En‐4‐ynyl‐
N
‐1‐ynylamides and
N
‐Propargyl‐
N
‐1‐ynylamides via a Tandem Iron Halide Promoted N‐to‐C Shift‐Aza‐Prins Cyclization Sequence. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hsin‐Hui Lin
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Tai‐Ching Chiang
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Rong‐Xuan Wu
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Yi‐Mei Chang
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Hao‐Wen Wang
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Ssu‐Ting Liu
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Ming‐Chang P. Yeh
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
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Presset M, Coquerel Y, Rodriguez J. Syntheses and Applications of Functionalized Bicyclo[3.2.1]octanes: Thirteen Years of Progress. Chem Rev 2012; 113:525-95. [DOI: 10.1021/cr200364p] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Marc Presset
- Aix Marseille
Université, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Yoann Coquerel
- Aix Marseille
Université, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Jean Rodriguez
- Aix Marseille
Université, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
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Seidel WW, Meel MJ, Schaffrath M, Pape T. In Pursuit of an Acetylenedithiolate Synthesis. European J Org Chem 2007. [DOI: 10.1002/ejoc.200601107] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Miller J, Harris J, Miller A, Ullah G, Welsh G. Synthesis of 8-substituted bicyclo[3.2.1]octane-6-carboxylic acids and anti-convulsant properties of the corresponding amides. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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The synthesis and pharmacological evaluation of (±)-2, 3- seco-fentanyl analogues. JOURNAL OF THE SERBIAN CHEMICAL SOCIETY 2004. [DOI: 10.2298/jsc0411955i] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An efficient, five-step synthetic approach to various acyclic 1,3-diamines has been developed and applied to the preparation of a novel class of open-chained fentanyl analogues. The acyclic derivatives 5.1?5.5 (all new compounds) were synthesized with the aim of estimating the significance of the piperidine ring for the opioid analgesic activity of anilido-piperidines. The starting ?-keto-amide 1.1, prepared by the aminolysis of methyl acetoacetate with methylphenethylamine, (93 % yield), was successively reacted with NaH and BuLi, to form the highly reactive ?,?-dienolate anion 1.1a. Regio and chemoselective ?-alkylation of the dienolate with various primary and secondary alkyl halides furnished the ?-keto-amides 1.2?1.5 (76?91 %). Reductive amination of the keto-amides 1.1?1.5 with aniline and Zn powder in acetic acid, via the enamine intermediates 2.1?2.5, afforded the ?-anilino amides 3.1?3.5 (74?85 %). After reductive deoxygenation of the tertiary amide group, using in situ generated diborane, the corresponding 1,3-diamines 4.1?4.5 were obtained (87?97 %). The synthesis of (?)-2,3-seco-fentanyls 5.1?5.5 was completed by N-acylation of the diamines 4.1?4.5 with propionyl chloride, followed by precipitation of the monooxalate salts (86?95 %). The parent compound, 2,3-seco-fentanyl 5.1, was found to be a 40 times less potent narcotic analgesic than fentanyl but still 5?6 times more active than morphine in rats, while i-Pr derivative 5.3 was inactive. Apart from the pharmacological significance, the general procedure described herein may afford various functionalized, 1,3-diamines as potential complexing agents and building blocks for the synthesis of aza-crown ethers.
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