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Ono Y, Nakazaki A, Ueki K, Higuchi K, Sriphana U, Adachi M, Nishikawa T. Asymmetric Synthesis of the Aromatic Fragment of Sespendole. J Org Chem 2019; 84:9750-9757. [PMID: 31266301 DOI: 10.1021/acs.joc.9b01597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sespendole is an indole sesquiterpene alkaloid bearing two isoprenyl groups, one of which is highly oxidized. Herein, we disclose an eight-step synthesis of the aromatic fragment of sespendole in an optically pure form, starting from 4-bromo-2-fluoronitrobenzene. The key steps were a Claisen rearrangement at room temperature for introduction of the prenyl group and a coupling between the dianion generated from prenylated bromo-N-tosylanilide and a chiral epoxy aldehyde.
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Affiliation(s)
- Yoshiki Ono
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa , Nagoya 464-8601 , Japan
| | - Atsuo Nakazaki
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa , Nagoya 464-8601 , Japan
| | - Kaori Ueki
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa , Nagoya 464-8601 , Japan
| | - Keiko Higuchi
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa , Nagoya 464-8601 , Japan
| | - Uraiwan Sriphana
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa , Nagoya 464-8601 , Japan
| | - Masaatsu Adachi
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa , Nagoya 464-8601 , Japan
| | - Toshio Nishikawa
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa , Nagoya 464-8601 , Japan
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Metal-Mediated Diastereoselective Allylation Reaction of Chiral α,β-Epoxy Aldehyde. Part 1. B KOREAN CHEM SOC 2006. [DOI: 10.5012/bkcs.2006.27.10.1519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Aljarilla A, Córdoba R, Csaky AG, Fernández I, López Ortiz F, Plumet J, Ruiz Gómez G. Stereochemistry of the Tetrabutylammonium Cyanide-Catalyzed Cyanosylilation of Cyclic α,β-Epoxyketones – Dependence of the Diastereoselectivity on the Ring Size. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600239] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yefidoff R, Weiss L, Avisar D, Albeck A. 13-Demethyl-13-substituted-13,14-dihydroretinols as potential affinity labels of retinol-binding proteins: syntheses and stability studies. Bioorg Chem 2004; 32:38-50. [PMID: 14700561 DOI: 10.1016/j.bioorg.2003.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
13-Demethyl-13-substituted-13,14-dihydroretinols were synthesized and their stability under various conditions was measured in order to evaluate whether they would be useful as affinity labels of retinol binding proteins and retinol metabolizing enzymes. The 13-chloro analog could not be isolated because it eliminated HCl under the Wittig reaction conditions of its preparation. The trans- and cis-13,14-epoxy analogs are stable in non-protic organic solvents, but undergo an elimination reaction under various chromatographic conditions and in mixtures of organic solvents with water or alcohol. The 13-hydroxy and 13-methoxy analogs are stable in aqueous solutions and are therefore suitable for biological studies.
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Affiliation(s)
- Revital Yefidoff
- Department of Chemistry, The Julius Spokojny Bioorganic Chemistry Laboratory, Bar Ilan University, Ramat Gan 52900, Israel
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Heydari A, Alijanianzadeh R. Lithium Perchlorate Diethyl Ether/Methyl Triflate Catalyzed Transfer of Silicon from Oxygen to Carbon in Silyl Ketene (Thio) Acetals. CHEM LETT 2003. [DOI: 10.1246/cl.2003.226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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6
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Heydari A. Organic synthesis in an unconventional solvent, 5.0M lithium perchlorate/diethyl ether. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00745-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Li BF, Zhang MJ, Hou XL, Dai LX. A facile synthesis of enantiopure 2-aziridinesulfinimines and their highly diastereoselective reactions with phosphite anions. J Org Chem 2002; 67:2902-6. [PMID: 11975544 DOI: 10.1021/jo016106+] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two novel enantiopure 1-benzyl-2-aziridinesulfinimines bearing a chiral group on both sides of the carbon-nitrogen double bond were synthesized from the condensation of racemic 1-benzyl-2-aziridinecarboxaldehyde and enantiopure p-toluenesulfinamide. The addition reaction with phosphite anion followed by the ring-opening reaction with thiophenol provided chiral alpha,beta-diamino-phosphonic acid derivatives. The addition reactions showed the operation of a double-stereodifferentiation effect. The possible transition states of the reaction were proposed, and high diastereoselectivities of the addition reactions of phosphite anions to both aziridinesulfinimines were realized in the presence or absence of zinc bromide.
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Affiliation(s)
- Bin-Feng Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China
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Heydari A, Baharfar R, Rezaie M, Aslanzadeh SM. A Novel, One-Pot Synthesis of α-C-Cyanohydrazines in the Presence of Lithium Perchlorate/Diethylether Solution (5.0 M). CHEM LETT 2002. [DOI: 10.1246/cl.2002.368] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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9
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Carda M, Castillo E, Rodrı́guez S, González F, Marco J. Stereoselective allylations of erythrulose derivatives under anhydrous conditions. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0957-4166(01)00262-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Abstract
[reaction: see text] The reaction of alpha-alkoxy aldehydes with Et4NAg(CN)2 or Me3SiCN in the presence of MgBr2 x OEt2 in CH2Cl2 at 0 degrees C gives the corresponding syn cyanohydrins in good yield with high diastereoselectivity. Excess MgBr2 x OEt2 (typically 5 equiv) is required for high diastereoselectivity. Et4NAg(CN)2 (but not Me3SiCN) is sufficiently reactive to give cyanohydrins at -78 degrees C, and higher diastereoselectivity is obtained at this temperature.
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Gregory RJH. Cyanohydrins in Nature and the Laboratory: Biology, Preparations, and Synthetic Applications. Chem Rev 1999; 99:3649-3682. [PMID: 11849033 DOI: 10.1021/cr9902906] [Citation(s) in RCA: 565] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Jørgensen KB, Suenaga T, Nakata T. Stereoselective total syntheses of α,β-unsaturated δ-lactones having a 1,3-syn-polyol moiety, isolated from Cryptocarya latifolia. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)01860-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Heydari A, Karimian A, Ipaktschi J. Lithium perchlorate/diethylether catalyzed aminophosphonation of aldehydes. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)01411-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ipaktschi J, Eckert T. LiClO4-Promoted Addition of Alkyl Grignard and Alkynyllithium Reagents to Ketones. Comparison of a 5 M LiClO4/Diethyl Ether Solution with CeCl3. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/cber.19951281206] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Reza Saidi M, Heydari A, Ipaktschi J. LiClO4-induzierte Dreikomponenten-Aminoalkylierung von Aldehyden. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/cber.19941270928] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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