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Morrow AP, Smith MW. Total Synthesis of Psammaplysins A, M, O, and Q and Ceratinamide A. J Am Chem Soc 2024; 146:2913-2918. [PMID: 38253006 DOI: 10.1021/jacs.3c14120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
The psammaplysins are a unique class of brominated marine alkaloids bearing a signature 5/7-spiroisoxazoline-oxepine core linked to a variable tyramine-derived unit. Here, we report the total synthesis of several members of this family via a dipolar cycloaddition between an in situ generated nitrile oxide and an unusual seven-membered enediol diether dipolarophile. Carefully orchestrated oxidative transformation toward the fully functionalized spirocycle and direct coupling with tyramine-derived amines provides access to five representative family members, psammaplysins A, M, O, and Q and ceratinamide A, the latter four for the first time. Additionally, kinetic resolution of a late-stage intermediate enables the first asymmetric synthesis of (-)-psammaplysin A, thereby confirming its absolute configuration.
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Affiliation(s)
- Andrew P Morrow
- UT Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United States
| | - Myles W Smith
- UT Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390, United States
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2
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Zhao D, Liu M, Bai L, Liu J, Luan X. Rapid Assembly of Spironaphthalenones by Dearomative Spiroannulation of Naphthols and Dielectrophiles. J Org Chem 2023; 88:15913-15924. [PMID: 37924300 DOI: 10.1021/acs.joc.3c02067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2023]
Abstract
A novel [4 + 1] and [5 + 1] dearomative spiroannulation has been developed by the use of commercial naphthols and phenols with dielectrophiles. Various spirocycles, including spiro[4.5] and spiro[5.5] have been constructed successfully by employing four-atom or five-atom dielectrophilic synthons. This transformation was realized through a sequence of site-selective C-alkylation/dearomative spiroannulation. Moreover, the potential application of this method was exemplified by several further transformation.
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Affiliation(s)
- Dongwei Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Mengtian Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Lu Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Jingjing Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Xinjun Luan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
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3
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Zhang L, Wang R, Wang C, Liu B, Yang J, Zhang Z, Huang J, Yang Z. Concise Synthesis of 7-Deoxypsammaplysins K and O and 7-Deoxyceratinamide A by 1,3-Dipole Cycloaddition. Org Lett 2022; 24:3786-3791. [DOI: 10.1021/acs.orglett.2c01298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Lijie Zhang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Rongya Wang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Chao Wang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Bingyan Liu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Jinfeng Yang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhongchao Zhang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Jun Huang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Beijing National Laboratory for Molecular Science and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
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4
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Abolhasani H, Zarghi A, Komeili Movahhed T, Abolhasani A, Daraei B, Dastmalchi S. Design, synthesis and biological evaluation of novel indanone containing spiroisoxazoline derivatives with selective COX-2 inhibition as anticancer agents. Bioorg Med Chem 2021; 32:115960. [DOI: 10.1016/j.bmc.2020.115960] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 11/27/2020] [Accepted: 12/14/2020] [Indexed: 01/06/2023]
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5
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Mahfoud A, Al Houari G, El Yazidi M, Saadi M, El Ammari L. 2-Methyl-3′-(4-methylphenyl)-4′-(2-nitrophenyl)-4′ H-spiro[chroman-3,5′-isoxazol]-4-one. IUCRDATA 2018. [DOI: 10.1107/s2414314618009628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
The title compound, C25H20N2O5, crystallizes with two molecules (A and B) in the asymmetric unit with similar conformations. The five-membered rings are both in envelope conformations with the spiro C atom as the flap. The six-membered heterocycles display half-chair conformations. The mean plane through the isoxazole ring is nearly perpendicular to those through the spiro-chroman system and the 4-nitrophenyl moieties, as indicated by the dihedral angles of 81.42 (9) and 87.58 (8)°, respectively, between them in molecule A. Equivalent data for molecule B are 75.58 (9) and 84.15 (8)°, respectively. The p-tolyl plane makes a dihedral angles of 24.10 (9) and 28.78 (8)° with the isoxazole ring in molecules A and B, respectively. In the crystal, molecules are linked by C—H...O and C—H...N hydrogen bonds and C—H...π interaction, forming a three-dimensional network.
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6
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Design, synthesis and biological evaluation of new tricyclic spiroisoxazoline derivatives as selective COX-2 inhibitors and study of their COX-2 binding modes via docking studies. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1534-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Fuwa H, Sakamoto K, Muto T, Sasaki M. Concise synthesis of the C15–C38 fragment of okadaic acid, a specific inhibitor of protein phosphatases 1 and 2A. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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8
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Das P, Hamme II AT. Divergent and Concise Syntheses of Spiroisoxazolines: First Total Synthesis of 11-Deoxyfistularin-3. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500603] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Jalloul I, Lotfi Efrit M, Ben Akacha A. Selectivities in the 1,3-Dipolar Cycloaddition of Arylnitrile Oxides to Aminoethylthiodiethylphosphonoacrylonitrile. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.902823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Imen Jalloul
- Laboratoire de Synthèse Organique et Hétérocyclique, Département de Chimie Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092-Tunis-Tunisie
| | - Med Lotfi Efrit
- Laboratoire de Synthèse Organique et Hétérocyclique, Département de Chimie Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092-Tunis-Tunisie
| | - Azaiez Ben Akacha
- Laboratoire de Synthèse Organique et Hétérocyclique, Département de Chimie Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092-Tunis-Tunisie
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Das P, Omollo AO, Sitole LJ, McClendon E, Valente EJ, Raucher D, Walker LR, Hamme AT. Synthesis and Investigation of Novel Spiro-isoxazolines as Anti-Cancer Agents. Tetrahedron Lett 2015; 56:1794-1797. [PMID: 25821250 PMCID: PMC4371604 DOI: 10.1016/j.tetlet.2015.02.059] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A series of structurally diverse 4-bromo spiro-isoxazolines possessing a variety of aromatic and aliphatic substituents at the 3 position, were synthesized through a 1,3-dipolar cycloaddition followed by intramolecular cyclization of a pendant hydroxyl or carboxylic acid group. The biochemical antiproliferative activity was evaluated in vitro by using two breast cancer cell lines (MCF-7 and MDA-MB-231) and two prostate cancer cell lines (PC-3 and DU-145) using the MTT viability assay, and the IC50 values were obtained. Spiro-isoxazoline derivatives bearing a p-chloro or an o-dichloro aromatic substituent at the 3-position of the isoxazoline showed considerable antitumor activities in all four cell lines with IC50 value ranging from 43μM to 56μM.
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Affiliation(s)
- Prasanta Das
- Department of Chemistry & Biochemistry, Jackson State University 1400 J. R. Lynch St, PO Box 17910, Jackson, Ms 39217, USA
| | - Ann O. Omollo
- Department of Chemistry & Biochemistry, Jackson State University 1400 J. R. Lynch St, PO Box 17910, Jackson, Ms 39217, USA
| | - Lungile J. Sitole
- Department of Chemistry & Biochemistry, Jackson State University 1400 J. R. Lynch St, PO Box 17910, Jackson, Ms 39217, USA
| | - Eric McClendon
- Department of Chemistry & Biochemistry, Jackson State University 1400 J. R. Lynch St, PO Box 17910, Jackson, Ms 39217, USA
| | - Edward J. Valente
- Department of Chemistry, University of Portland, Portland, OR 97203, USA
| | - Drazen Raucher
- Department of Biochemistry, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Leslie R. Walker
- Department of Biochemistry, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Ashton T. Hamme
- Department of Chemistry & Biochemistry, Jackson State University 1400 J. R. Lynch St, PO Box 17910, Jackson, Ms 39217, USA
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Eftekhari-Sis B, Zirak M. Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles. Chem Rev 2014; 115:151-264. [PMID: 25423283 DOI: 10.1021/cr5004216] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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12
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Abstract
An experimental study on the synthesis, tautomerism and acid promoted structural changes of spiro-pyrazolines is described. The target was achieved through a [3+2]-dipolar cycloaddition of an alkene with nitrile imines generated in situ and was isolated in high yield. The synthesized cycloadduct displayed a tendency to exhibit an imine-enamine type of tautomerism as evidenced by X-ray crystal and NMR studies. Furthermore, addition of an acid resulted in the transformation of an imine tautomer to an enamine. The current report constitutes a first formal observation of this kind of tautomerism observed in spiro-indoline pyrazolines.
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13
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Gul M, Tutar A. Synthesis of Spirocyclic and Tricyclic Isoxazoline via 1,3-Dipolar Cycloaddition Reactions. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1592] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Melek Gul
- Faculty of Sciences and Arts, Department of Chemistry; Amasya University; 05100 Merkez-Amasya Turkey
| | - Ahmet Tutar
- Faculty of Sciences and Arts, Department of Chemistry; Sakarya University; Esentepe Campus 54187 Serdivan-Sakarya Turkey
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Synthesis, characterization and biological activity of new cyclization products of 3-(4-substituted benzylidene)-2H-pyrido[1,2-a]pyrimidine 2,4-(3H)-diones. J CHEM SCI 2013. [DOI: 10.1007/s12039-013-0367-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Bennani B, Kerbal A, Baba BF, Daoudi M, Warad I, Aljofan M, Alafeefy AM, Masand V, Hadda TB. Synthesis, characterization, bioactivity, and POM analyses of isothiochromeno[3,4-e][1,2]oxazines. Med Chem Res 2013. [DOI: 10.1007/s00044-012-0392-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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McClendon E, Omollo AO, Valente EJ, Hamme AT. Oxonium Ion Mediated Synthesis of 4-Substituted Spiro-Isoxazolines. Tetrahedron Lett 2009; 50:533-535. [PMID: 20140060 DOI: 10.1016/j.tetlet.2008.11.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The stereoselective synthesis of 4-bromo-spiro-isoxazolines was achieved in one step through the bromination of various isoxazoles that contain a pendant alcohol or carboxylic acid functional group. Isoxazole bromination leads to a bromonium ion intermediate which opens either by neighboring oxygen lone pair electrons or by intramolecular nucleophilic attack. Single X-ray crystal data provides evidence that the two contiguous stereocenters of the spiro-isoxazoline are formed by the anti intramolecular attack of the nucleophile relative to bromine since there is an anti stereochemical relationship between the spirocyclic ring oxygen and the bromine atom.
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Affiliation(s)
- Eric McClendon
- Department of Chemistry, College of Science, Engineering and Technology, Jackson State University, Jackson, MS 39217 USA
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Alhouari G, Kerbal A, Larbi NB, Bennani B, Hadda TB, Stoeckli-Evans H. 4'-Methyl-3-(4-nitro-phen-yl)-4-phenyl-4,5,1',2',3',4'-hexa-hydro-spiro-[isoxazole-5,2'-naphthalen]-1'-one. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o509-10. [PMID: 21201529 PMCID: PMC2960307 DOI: 10.1107/s1600536807066470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2007] [Accepted: 12/11/2007] [Indexed: 11/17/2022]
Abstract
The title compound, C25H20N2O4, is a new spiro-isoxazoline derivative. It contains a five-membered isoxazoline ring (A), a tetralone unit (E and D), a 4-nitrophenyl substituent (B), and a phenyl ring (C). The isoxazoline ring (A) has an envelope conformation, while the cyclohexenone ring (D) has an intermediate sofa/half-chair conformation. The aromatic ring of the 4-nitrophenyl substituent (B) is inclined at an angle of 78.97 (10)° to the phenyl ring (C). The rigid pharmacophore site, Osp2—C—C—Osp3, is characterized by an O⋯O distance of 3.113 (2) Å and an O—C—C—O torsion angle of 97.8 (2)°. In the crystal structure, molecules are linked by C—H⋯O contacts.
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Alhouari G, Kerbal A, Larbi NB, Hadda TB, Daoudi M, Stoeckli-Evans H. 3,4-Bis(4-nitro-phen-yl)-1,2,5-oxadiazole 2-oxide. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o511. [PMID: 21201530 PMCID: PMC2960216 DOI: 10.1107/s1600536807066640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2007] [Accepted: 12/12/2007] [Indexed: 11/24/2022]
Abstract
The title compound, C14H8N4O6, a new 1,2,5-oxadiazole N-oxide derivative, was formed by dimerization of 4-nitrobenzaldehyde oxime. The compound crystallizes with two independent molecules per asymmetric unit. The N-oxide O atom is disordered over two sites in each molecule; site occupancy factors are 0.57/0.43 and 0.5/0.5. The mean planes through the two benzene rings are inclined to the planar 1,2,3-oxadiazole ring by 25.03 (11) and 41.64 (11)° in one molecule, and 22.58 (11) and 42.66 (11)° in the other molecule, the smaller angle being for the ring on the oxide side of the oxadiazole ring in each case. In the crystal structure, the individual molecules form centrosymmetric dimers linked via C—H⋯O hydrogen bonds. The dimers of one molecule are then linked to those of the other molecule via C—H⋯O hydrogen bonds, forming a three-dimensional network.
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Bennani B, Baba BF, Larbi NB, Boukir A, Kerbal A, Mimouni M, Hadda TB, Trzaskowski B, Jalbout AF. Synthesis of new spiro-[isothiochromene-3,5′-isoxazolidin]-4(1H)-ones. J Heterocycl Chem 2007. [DOI: 10.1002/jhet.5570440332] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Manikandan S, Jayashankaran J, Raghunathan R. An Easy Access to Spiroisoxazoline [5,31] Flavan-41-one Through 1,3-Dipolar Cycloaddition Reaction of Nitrile Oxide to Unusual Dipolarophiles. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-120026347] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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21
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Zhao H, Li X, Ran X, Zhang W. Theoretical study of reaction mechanism and regioselectivity of spiro-isoxazoline derivatives synthesized by intermolecular 1,3-dipolar cycloaddition. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.theochem.2004.06.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Cheng WC, Liu Y, Wong M, Olmstead MM, Lam KS, Kurth MJ. Stereoselective synthesis of unnatural spiroisoxazolinoproline-based amino acids and derivatives. J Org Chem 2002; 67:5673-7. [PMID: 12153267 DOI: 10.1021/jo025611j] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A route to spiroisoxazolinoproline-based amino acid derivatives is reported in which exo-methyleneprolinate 4 (tert-butyl ester) reacts as a dipolarophile with nitrile oxides to generate spiroisoxazolinoprolinates 7/10/11 in good yields (70-75%) and with ca. 1:4 cis:trans diastereoselectivity. tert-Butyl spiroisoxazolinoprolinates were separable by column chromatography and amenable to scale-up leading to single diastereoisomers of N-Boc and N-Fmoc protected spiroisoxazolinoproline amino acids.
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Affiliation(s)
- Wei-Chieh Cheng
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616-5295, USA
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Manikandan S, Shanmugasundaram M, Raghunathan R. Synthesis of spiro[3,4-diaryl-4,5-dihydroisoxazole-5,2?-1?,2?,3?,4-tetrahydro-1?-naphthalenone]. HETEROATOM CHEMISTRY 2001. [DOI: 10.1002/hc.1070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Raghunathan R, Manikandan S, Shanmugasundaram M, J. Padma Malar E. Synthesis of Spiroisoxazoline[5,31]chroman-41-one. HETEROCYCLES 2000. [DOI: 10.3987/com-99-8758] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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