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Abdelkafi H, Evanno L, Deville A, Dubost L, Chiaroni A, Nay B. Synthesis of Naturally Occurring Cyclohexene Rings Using Stereodirected Intramolecular Diels-Alder Reactions Through Asymmetric 1,3-Dioxane Tethering (Eur. J. Org. Chem. 15/2011). European J Org Chem 2011. [DOI: 10.1002/ejoc.201190036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abdelkafi H, Evanno L, Deville A, Dubost L, Chiaroni A, Nay B. Synthesis of Naturally Occurring Cyclohexene Rings Using Stereodirected Intramolecular Diels-Alder Reactions Through Asymmetric 1,3-Dioxane Tethering. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001678] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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3
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Ahond A, Chiaroni A, Coll JC, Fourneron JD, Riche C, Braekman JC, Daloze D, Tursch B, Dunstan PJ. Studies of Australian Soft Corals. XVII . The Isolation and Properties of Lemnalactone, 7-EPI-Lemnalactone and their Derivatives. A Correction of Several Literature Assignments, Supported by X-Ray Diffraction. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19790880507] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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Ty N, Dupeyre G, Chabot GG, Seguin J, Quentin L, Chiaroni A, Tillequin F, Scherman D, Michel S, Cachet X. Structure-activity relationships of indole compounds derived from combretastatin A4: synthesis and biological screening of 5-phenylpyrrolo[3,4-a]carbazole-1,3-diones as potential antivascular agents. Eur J Med Chem 2010; 45:3726-39. [PMID: 20538383 DOI: 10.1016/j.ejmech.2010.05.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Revised: 05/09/2010] [Accepted: 05/10/2010] [Indexed: 10/19/2022]
Abstract
A series of 5-(3',4',5'-trimethoxyphenyl)pyrrolo[3,4-a]carbazole-1,3(2H,10H)-diones was designed as cis-restricted analogues of 3-aroylindoles, arylthioindoles and 3-benzylidoneindolin-2-ones derived from combretastatin A4 (CA-4). Starting from various indoles, compounds were synthesized by means of a convenient two-step procedure involving a one-pot multicomponent reaction as key step. Intermediate tetrahydro[3,4-a]carbazoles and their corresponding carbazoles were submitted to biological screening tests involved in antivascular action, including the cytotoxicity against murine B16 melanoma cells, the rounding up of endothelial cells (EA.hy 926) and the inhibition of tubulin polymerization. Of the 31 compounds screened, those bearing a methoxy group at the 8-position endowed significant biological activities. A carbazole compound 30 was identified as a promising candidate for further development of novel vascular targeting agents.
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Affiliation(s)
- Nancy Ty
- Laboratoire de Pharmacognosie, Université Paris Descartes, Faculté des Sciences Pharmaceutiques et Biologiques, UMR 8638 CNRS, 4 avenue de l'Observatoire, 75006 Paris, France
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Depauw S, Gaslonde T, Léonce S, Kraus-Berthier L, Laine W, Lenglet G, Chiaroni A, Pfeiffer B, Bailly C, Michel S, Tillequin F, Pierré A, David-Cordonnier MH. Influence of the Stereoisomeric Position of the Reactive Acetate Groups of the Benzo[b]Acronycine derivative S23906-1 on Its DNA Alkylation, Helix-Opening, Cytotoxic, and Antitumor Activities. Mol Pharmacol 2009; 76:1172-85. [DOI: 10.1124/mol.109.057554] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Madelaine C, Ouhamou N, Chiaroni A, Vedrenne E, Grimaud L, Six Y. Intramolecular Kulinkovich–de Meijere reactions of various disubstituted alkenes bearing amide groups. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.06.067] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fontaine P, Chiaroni A, Masson G, Zhu J. One-Pot Three-Component Synthesis of α-Iminonitriles by IBX/TBAB-Mediated Oxidative Strecker Reaction. Org Lett 2008; 10:1509-12. [DOI: 10.1021/ol800199b] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patrice Fontaine
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | - Angèle Chiaroni
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | - Jieping Zhu
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
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8
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Largeron M, Chiaroni A, Fleury MB. Environmentally Friendly Chemoselective Oxidation of Primary Aliphatic Amines by Using a Biomimetic Electrocatalytic System. Chemistry 2008; 14:996-1003. [DOI: 10.1002/chem.200700876] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sauvaître T, Barlier M, Herlem D, Gresh N, Chiaroni A, Guenard D, Guillou C. New Potent Acetylcholinesterase Inhibitors in the Tetracyclic Triterpene Series. J Med Chem 2007; 50:5311-23. [PMID: 17902635 DOI: 10.1021/jm070536w] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new highly selective inhibitor of acetylcholinesterase (AChE) was discovered by high-throughput screening. Compound 1 was synthesized from a natural product, the N-3-isobutyrylcycloxobuxidine-F 2. A new extraction protocol of this compound is described. The hemisynthesis and optimization of 1 are reported. The analogs of 1 were tested in vitro for the inhibition of both cholinesterases (AChE and BuChE). These compounds selectively inhibited AChE. Extensive molecular docking studies were performed with 2 and AChE employing Discover Biosym software to rationalize the binding interaction. The results suggested that ligand 2 binds simultaneously to both catalytic and peripheral sites of AChE.
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Affiliation(s)
- Thibault Sauvaître
- Institut de Chimie des Substances Naturelles, Bt 27, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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10
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Pham VC, Jossang A, Chiaroni A, Sévenet T, Nguyen VH, Bodo B. Solution and Crystal Conformations of Myrionine, a New 8β-Alkyl-cis-decahydroquinoline of Myrioneuron nutans. Org Lett 2007; 9:3531-4. [PMID: 17691797 DOI: 10.1021/ol071393a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Myrionine (1), a new 8beta-alkyl-cis-decahydroquinoline, was isolated from Myrioneuron nutans. Its structure was determined by spectral methods and then confirmed by X-ray analysis and total synthesis. In solution, 1 gives rise to an N-in/N-out equilibrium. The solvent has weak influence on the N-in/N-out ratio for myrionine (1), whereas together with the anions, it plays an important role for myrionine hydrochloride (9) and hydroiodide (10). The two N-in and N-out conformations obtained separately by crystallization of 9 and 10, respectively, were analyzed by X-ray diffraction.
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Affiliation(s)
- Van Cuong Pham
- Laboratoire de Chimie des Substances Naturelles - UMR 5154 CNRS, Muséum National d'Histoire Naturelle, 63 rue Buffon, 75005 Paris, France
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11
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Fleury‐Brégeot N, Panossian A, Chiaroni A, Marinetti A. Stereospecific Synthesis, Structural Characterisation and Resolution of 2‐Phospha[3]ferrocenophane Derivatives – a New Chiral Scaffold. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700282] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nicolas Fleury‐Brégeot
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, 1, av. de la Terrasse, 91198 Gif‐sur‐Yvette Cedex, France
| | - Armen Panossian
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, 1, av. de la Terrasse, 91198 Gif‐sur‐Yvette Cedex, France
| | - Angèle Chiaroni
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, 1, av. de la Terrasse, 91198 Gif‐sur‐Yvette Cedex, France
| | - Angela Marinetti
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, 1, av. de la Terrasse, 91198 Gif‐sur‐Yvette Cedex, France
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Varin M, Chiaroni A, Lallemand JY, Iorga B, Guillou C. A New Access to Dihydrotropones through Ring Expansion of Spirocyclohexadienones: Synthesis and Mechanism. J Org Chem 2007; 72:6421-6. [PMID: 17655358 DOI: 10.1021/jo070594p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper we report the rearrangement of spirocyclohexadienones into dihydrotropones in basic conditions as a new method for the preparation of seven-membered ring ketones, which are key building blocks for the synthesis of tropoloalkaloids. DFT calculations and deuterium labeling studies support the mechanism we propose for this rearrangement, involving the ring opening of a spirocyclopropane intermediate followed by successive base-catalyzed 1,3-hydrogen shifts. The X-ray structure of the resulting dihydrotropone shows near-perfect planarity and the conjugation gain is likely to be the driving force of the reaction.
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Affiliation(s)
- Marie Varin
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, F-91198 Gif sur Yvette, France
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Evanno L, Deville A, Dubost L, Chiaroni A, Bodo B, Nay B. Utility of a chiral 1,3-dioxane template in stereoselective intramolecular Diels–Alder reactions. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.02.089] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
[structure: see text]. The first enantioselective total synthesis of 1-epi-pathylactone A, 3, has been accomplished using a PhI(OAc)2-mediated domino reaction as a key step. No diastereomeric separation was required throughout the whole synthetic scheme presented in this paper. Comparison of 1H and 13C NMR spectral data of the synthetic product with the reported spectral data of natural pathylactone A, coupled with an X-ray crystallographic analysis, led to the conclusion that the C1 configuration in the original paper was erroneously ascribed to (R).
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Affiliation(s)
- Angéline Chanu
- Institut de Chimie des Substances Naturelles, CNRS F-91198 Gif-sur-Yvette, France
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15
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Moriou C, Thomas M, Adeline MT, Martin MT, Chiaroni A, Pochet S, Fourrey JL, Favre A, Clivio P. Crystal structure and photochemical behavior in solution of the 3'-N-sulfamate analogue of thymidylyl(3'-5')thymidine. J Org Chem 2007; 72:43-50. [PMID: 17194080 DOI: 10.1021/jo061488a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The 3'-N-sulfamate analogue of thymidylyl(3'-5')thymidine (TnsoT, 1) exhibits a preference for a C3'-endo conformation in the solution and solid states. Its photochemical behavior in solution is compared to that of its natural counterpart, thymidylyl(3'-5')thymidine (TpT, 2), to get further insight into the significance of the C3'-endo conformation on the photoproduct formation at the single-stranded dinucleotide level. Irradiation at 254 nm of 1 led to the same type of photoproducts as observed with 2. However, 1 was significantly more photoreactive than 2, and accordingly, the initial rate of photoproduct formation was enhanced in accordance with its propensity to base stack compared to 2. The corresponding quantum yields were determined and showed that the enhancement factor (1 compared to 2) is moderate for the cyclobutane pyrimidine dimer (CPD) (1.26) and much higher for the (6-4) photoproduct (1.8). These data strongly suggest that the CPD and (6-4) photoproduct arise from distinct minor stacked conformations.
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Affiliation(s)
- Céline Moriou
- Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91190 Gif sur Yvette, France
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Finet L, Dakir M, Chiaroni A, Arseniyadis S. Practical Construction of Taxoid C-Ring Segments with a Consecutive Heterodomino Transformation as the Key Reaction Step. European J Org Chem 2007. [DOI: 10.1002/ejoc.200600751] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Larroque AL, Dubois J, Thoret S, Aubert G, Chiaroni A, Guéritte F, Guénard D. Novel C2-C3' N-peptide linked macrocyclic taxoids. Part 2: synthesis and biological activities of docetaxel analogues with a peptide side chain at C2 and their macrocyclic derivatives. Bioorg Med Chem 2006; 15:563-74. [PMID: 17064914 DOI: 10.1016/j.bmc.2006.09.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2006] [Revised: 09/12/2006] [Accepted: 09/15/2006] [Indexed: 10/24/2022]
Abstract
The synthesis of a series of novel docetaxel analogues possessing a peptide side chain at the C2 position as well as peptide macrocyclic taxoids is described. These compounds were designed to mimic a region of the alpha-tubulin loop equivalent to the paclitaxel binding pocket of beta-tubulin. Fifteen new peptide taxoids were obtained and evaluated as inhibitors of microtubule disassembly as well as cell proliferation. The relationships between these new taxoids and the tau protein motif interacting with microtubules are discussed.
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Affiliation(s)
- Anne-Laure Larroque
- Institut de Chimie des Substances Naturelles, CNRS, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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18
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Ge CS, Hourcade S, Ferdenzi A, Chiaroni A, Mons S, Delpech B, Marazano C. A Biogenetically Based Strategy Towards the Polycyclic Core Skeleton of Sarain A. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600293] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Xu D, Chiaroni A, Fleury MB, Largeron M. Electrochemically Induced Cascade Reaction for the Assembly of Libraries of Biologically Relevant 1,4-Benzoxazine Derivatives. J Org Chem 2006; 71:6374-81. [PMID: 16901118 DOI: 10.1021/jo060452f] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The scope and mechanism of an electrochemically induced cascade reaction, which leads to highly substituted 1,4-benzoxazine derivatives, have been explored through the variation of the structure of the o-azaquinone mediator. This reaction sequence, wherein both cycloaddition partners are generated in situ, at room temperature, under metal-free conditions, allows the regiospecific inverse-electron-demand Diels-Alder (IEDDA) reaction of an o-azaquinone heterodiene and a secondary alkylenamine dienophile, two chemically nonaccessible unstable entities. The cascade reaction was found to be general with electron-poor o-azaquinone entities generated from substituted 2-aminoresorcinol substrates. In the case of o-aminophenol derivatives which lack the 2-hydroxyl group, the generated o-azaquinone species failed to catalyze the oxidation of the amine to the corresponding imine, precursor of the enamine dienophile, because the absence of an intramolecular hydrogen bond at the origin of a highly reactive Schiff base cyclic transition state. To overcome this problem, a tandem oxidation-IEDDA reaction, in which the o-azaquinone is generated in the presence of a preformed enamine, has been developed as an alternative. These one-pot methodologies, which offer the opportunity to introduce variations in both cycloaddition partners, should be particularly useful for the development of libraries of biologically relevant 1,4-benzoxazine derivatives.
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Affiliation(s)
- Daiwang Xu
- UMR 8638 CNRS-Université Paris 5, Synthèse et Structure de Molécules d'Intérêt Pharmacologique, Faculté des Sciences Pharmaceutiques et Biologiques, 75270 Paris Cedex 06, France
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Joncour A, Décor A, Thoret S, Chiaroni A, Baudoin O. Biaryl Axis as a Stereochemical Relay for the Enantioselective Synthesis of Antimicrotubule Agents. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600451] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Joncour A, Décor A, Thoret S, Chiaroni A, Baudoin O. Biaryl Axis as a Stereochemical Relay for the Enantioselective Synthesis of Antimicrotubule Agents. Angew Chem Int Ed Engl 2006; 45:4149-52. [PMID: 16688690 DOI: 10.1002/anie.200600451] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Agnès Joncour
- Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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Décor A, Monse B, Martin MT, Chiaroni A, Thoret S, Guénard D, Guéritte F, Baudoin O. Synthesis and biological evaluation of B-ring analogues of (−)-rhazinilam. Bioorg Med Chem 2006; 14:2314-32. [PMID: 16314101 DOI: 10.1016/j.bmc.2005.11.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2005] [Revised: 11/03/2005] [Accepted: 11/08/2005] [Indexed: 10/25/2022]
Abstract
Three macrocyclic analogues of rhazinilam 1 having a 11- or 12-membered B-ring with an endocyclic carbamate group or an amino-acid residue were synthesized from the natural product. These analogues 3 and 4 displayed a very low activity on tubulin. Thirty N-1 and C-16 substituted analogues of rhazinilam were also synthesized regioselectively from rhazinilam. Stereochemical analyses showed that N-1 and C-16alpha analogues have the same conformation as rhazinilam, whereas C-16beta analogues adopt a different conformation for rings B and D. All N-1 and C-16 analogues were less active than rhazinilam on tubulin, though analogues 5a, 6aalpha, 6balpha, and 6f having the less bulky substituents retained close affinities. A few analogues either active (like 6f) or inactive (like 5o) on tubulin showed significant inhibition of the growth of KB cancer cells.
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Affiliation(s)
- Anne Décor
- Institut de Chimie des Substances Naturelles, CNRS, avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
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Décor A, Bellocq D, Thoison O, Lekieffre N, Chiaroni A, Ouazzani J, Cresteil T, Guéritte F, Baudoin O. In vitro oxidative metabolism study of (−)-rhazinilam. Bioorg Med Chem 2006; 14:1558-64. [PMID: 16257221 DOI: 10.1016/j.bmc.2005.10.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2005] [Revised: 09/30/2005] [Accepted: 10/04/2005] [Indexed: 11/21/2022]
Abstract
Metabolism studies were conducted in order to investigate the reasons for the in vivo lack of activity of (-)-rhazinilam 1, an original poison of the mitotic spindle. Bioconversion by Beauveria bassiana strains, rat and human liver microsomes allowed the identification of metabolites 2, 3, and 4 oxidized in positions 3 and 5 of rhazinilam. Further experiments indicated that CYP2B6 was the main CYP responsible for the oxidation of 1 by human liver microsomes. All isolated metabolites were markedly less active than rhazinilam in vitro, which might explain its in vivo inactivity.
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Affiliation(s)
- Anne Décor
- Institut de Chimie des Substances Naturelles, CNRS, Gif-sur-Yvette, France
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Jakubowicz K, Wong YS, Chiaroni A, Bénéchie M, Marazano C. New Polycyclic Diamine Scaffolds from Dimerization of 3-Alkyl-1,4-dihydropyridines in Acidic Medium. J Org Chem 2005. [DOI: 10.1021/jo052600s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Larquetoux L, Ouhamou N, Chiaroni A, Six Y. The Intramolecular Aromatic Electrophilic Substitution of Aminocyclopropanes Prepared by the Kulinkovich-de Meijere Reaction. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500428] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Xu D, Chiaroni A, Largeron M. A One-Pot Regiospecific Synthesis of Highly Functionalized 1,4-Benzodioxin Derivatives from an Electrochemically Induced Diels−Alder Reaction. Org Lett 2005; 7:5273-6. [PMID: 16268556 DOI: 10.1021/ol052146e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] The anodic oxidation of pyrogallol derivatives produces chemically unstable o-quinone heterodienes, which are trapped in situ by enamine dienophiles through regiospecific inverse-electron-demand Diels-Alder reactions. The possibility of introducing variations in both cycloaddition partners gives rise to highly substituted 1,4-benzodioxin cycloadducts with up to five elements of diversity. The reactions proceed under mild conditions with a good efficiency. The methodology should be amenable to the assembly of libraries of biologically relevant heterocycles.
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Affiliation(s)
- Daiwang Xu
- UMR 8638 Synthèse et Structure de Molécules d'Intérêt Pharmacologique, CNRS-Université Paris 5, 4 avenue de l'observatoire, 75270 Paris Cedex 06, France
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Kumar S, Flamant-Robin C, Wang Q, Chiaroni A, Sasaki NA. Synthesis of 4-substituted-3-aminopiperidin-2-ones: application to the synthesis of a conformationally constrained tetrapeptide N-acetyl-Ser-Asp-Lys-Pro. J Org Chem 2005; 70:5946-53. [PMID: 16018690 DOI: 10.1021/jo050736k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new and practical synthetic strategy is developed for the synthesis of six-membered lactam-bridged dipeptides, 4-substituted-3-aminopiperidin-2-ones, featuring two key steps: (a) a diastereoselective addition of cuprate to (E)-alpha,beta-unsaturated ester (3) and (b) racemization-free reductive amination. On the basis of this methodology, conformationally constrained tetrapeptide N-acetyl-Ser-Asp-Lys-Pro (AcSDKP) (2) has been successfully synthesized from 3-amino-4-vinylpiperidin-2-one (22).
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Affiliation(s)
- Sukeerthi Kumar
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
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28
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Jakubowicz K, Wong YS, Chiaroni A, Bénéchie M, Marazano C. New Polycyclic Diamine Scaffolds from Dimerization of 3-Alkyl-1,4-dihydropyridines in Acidic Medium. J Org Chem 2005; 70:7780-3. [PMID: 16149815 DOI: 10.1021/jo050937o] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] 3-Alkyl-1,4-dihydropyridines dimerize in acidic medium, at low temperature, to give polycyclic imminium salts derivatives that were reduced to afford new polycyclic diamine scaffolds. The reaction can be extended to enantiopure series starting from R-(+)- or S-(-)-1-phenylethylamine. Long exposure of the polycyclic imminium salt intermediates to air moisture at 20 degrees C resulted in formation of new amide derivatives. This is probably due to the addition of water followed by an intramolecular oxido-reduction process.
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Affiliation(s)
- Karine Jakubowicz
- Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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29
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Abstract
[reaction: see text] A short synthesis of intermediates possessing the tricyclic core of natural madangamines, bioactive alkaloids found in marine sponges, is described. The key reaction entails the condensation of the sodium salt of diethylacetonedicarboxylate with a dihydropyridinium salt derivative. This new approach is modeled on a biogenetic proposal linking madangamines to ircinals, related alkaloids occurring in sponges of the same order.
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Affiliation(s)
- Han Min Tong
- Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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30
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Barrière JC, Chiaroni A, Cléophax J, Géro SD, Riche C, Vuilhorgne M. Synthesis of Reactive Intermediates for Natural Cyclopentane Derivatives from (−)-Quinic Acid: Preparation of 11α-hydroxy-13-oxaprostanoic acid. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19810640419] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Dumontet V, Van Hung N, Adeline MT, Riche C, Chiaroni A, Sévenet T, Guéritte F. Cytotoxic flavonoids and alpha-pyrones from Cryptocarya obovata. J Nat Prod 2004; 67:858-862. [PMID: 15165150 DOI: 10.1021/np030510h] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
One alpha-pyrone, obolactone (1), two chalcones, kurzichalcolactone B (2) and obochalcolactone (3), and two flavanones, oboflavanones A (4) and B (5), have been isolated from the fruits and the trunk bark of Cryptocarya obovata. The structures of the new compounds were elucidated by spectroscopic interpretations. The absolute configuration of obolactone (1) was established by circular dichroism. Obolactone (1) and obochalcolactone (3) display significant activity in in vitro cytotoxic assays against the KB cell line. Biosynthetic pathways for oboflavanones and obochalcolactone are suggested.
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Affiliation(s)
- Vincent Dumontet
- Institut de Chimie des Substances Naturelles, CNRS, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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32
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Mota A, Chiaroni A, Langlois N. New Diastereoselective Route to 2-Substitutedcis-(2S,5S)- andtrans-(2S,5R)-5-Alkylpyrrolidines as Indolizidine and Pyrrolizidine Scaffolds. European J Org Chem 2003. [DOI: 10.1002/ejoc.200300393] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Toffano M, Dudot B, Zaparucha A, Royer J, Sevrin M, George P, Chiaroni A. Asymmetric routes towards polyfunctionalized pyrrolidines: application to the synthesis of alkaloid analogues. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0957-4166(03)00592-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Abstract
A simple and versatile method for the enantio- and diastereoselective synthesis of mono- or disubstituted 3-aminoazepanes is described. The key step involves a highly regio- and diastereoselective tandem ring-enlargement/alkylation or reduction process. This novel synthetic route provides enantiomerically pure constrained diamines interesting as scaffolds for medicinal chemistry.
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Affiliation(s)
- S Cutri
- Laboratoire de Chimie Thérapeutique, UMR 8638 associée au CNRS et à l'Université René Descartes, Faculté des Sciences Pharmaceutiques et Biologiques, 4, av de l'Observatoire, 75270 Paris Cedex 06, France
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35
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De Paolis M, Chiaroni A, Zhu J. Synthetic studies on ecteinascidin 743: rapid access to the fully functionalized tetrahydroisoquinoline with a bridged 10-membered sulfur containing macrocycleElectronic supplementary information (ESI) available: spectroscopic data for all new compounds and X-ray data for compound 14. See http://www.rsc.org/suppdata/cc/b3/b309824a/. Chem Commun (Camb) 2003:2896-7. [PMID: 14680229 DOI: 10.1039/b309824a] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of tetrahydroisoquinoline with a 1,4-bridged 10-membered sulfur containing macrolactone (5) is described. Phenolic aldolisation, Pictet-Spengler cyclisation of an acid sensitive amino diol under newly developed conditions (LiBr, toluene-TFE, 80 degrees C) and acid promoted intramolecular C-S bond formation leading to a 10-membered cycle are key steps of our synthesis.
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Affiliation(s)
- Michaël De Paolis
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette, France
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37
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Flamant-Robin C, Wang Q, Chiaroni A, Sasaki N. An efficient method for the stereoselective synthesis of cis -3-substituted prolines: conformationally constrained α-amino acids. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)01405-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Eljamili H, Auhmani A, Dakir M, Lassaba E, Benharref A, Pierrot M, Chiaroni A, Riche C. Oxydation et addition des dihalocarbènes sur le β-himachalène. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01407-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Chiaroni A, Randriambola L, Riche C, Husson HP. Structure of goniomine, an alkaloid of a new type biogenetically related to indole alkaloids. X-ray analysis of dihydrogoniomine. J Am Chem Soc 2002. [DOI: 10.1021/ja00538a043] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Schiavi B, Ahond A, Al-Mourabit A, Poupat C, Chiaroni A, Gaspard C, Potier P. Synthesis of 5-deazathiogirollines: analogs of a natural antitumor agent. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00383-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Tillequin F, Cachet X, Deguin B, Koch M, Chiaroni A. Synthesis and Structural Assignment of Functionalized 8,9-Diazatricyclo[4.4.0.01,5]decane: A New Tricyclic System Including the Pyridazine Ring. HETEROCYCLES 2002. [DOI: 10.3987/com-01-9427] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Poigny S, Nouri S, Chiaroni A, Guyot M, Samadi M. Total synthesis and determination of the absolute configuration of coscinosulfate. A new selective inhibitor of Cdc25 protein phosphatase. J Org Chem 2001; 66:7263-9. [PMID: 11681936 DOI: 10.1021/jo010154c] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first total synthesis of coscinosulfate 1, a metabolite isolated from a sea sponge, starting from (+)-sclareolide 3 is described. The convergent synthesis strategy relies on the coupling of sulfone 21 with the bromide 26. The sulfone fragment 21 was obtained by successive asymmetric aldol reaction with aldehyde 2 to introduce the stereocenters at C-12 and C-13, followed by one-carbon homologation via Horner-Wadsworth-Emmons olefination. The selective sulfatation at C-12 was accomplished through the quinone intermediate 31 obtained by selective oxidation of hydroquinone 30; this, when followed by reduction, furnished the desired coscinosulfate 1. X-ray analysis of the intermediate aldehyde 18 confirmed the proposed structure.
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Affiliation(s)
- S Poigny
- Laboratoire de Chimie des Substances Naturelles, associé au CNRS, Muséum National d'Histoire Naturelle, 63, rue Buffon, F-75005 Paris, France
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43
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Jousse-Karinthi C, Riche C, Chiaroni A, Desmaële D. Synthetic Application of Sequential Palladium-Catalyzed Allylic Acetate Alkylation and Michael Addition Carbocyclization: Synthesis of (±)-Dihydroerythramine. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200110)2001:19<3631::aid-ejoc3631>3.0.co;2-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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44
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González-Zamora E, Fayol A, Bois-Choussy M, Chiaroni A, Zhu J. Three component synthesis of oxa-bridged tetracyclic tetrahydroquinolines. Chem Commun (Camb) 2001:1684-5. [PMID: 12240443 DOI: 10.1039/b104317j] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bridged tetracyclic tetrahydroquinoline is synthesized by a novel one-pot three component condensation of an ortho-amino cinnamate, alpha-isocyano acetamide and an aldehyde.
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Affiliation(s)
- E González-Zamora
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette, France
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45
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Tan K, Alvarez R, Nour M, Cavé C, Chiaroni A, Riche C, d'Angelo J. Racemization processes at a quaternary carbon center in the context of the asymmetric Michael reaction. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)00926-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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46
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47
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Khuong-Huu Q, Chiaroni A, Riche C, Nguyen-Ngoc H, Nguyen-Viet K, Khuong-Huu F. New rearranged limonoids from Harrisonia perforata. III. J Nat Prod 2001; 64:634-637. [PMID: 11374961 DOI: 10.1021/np000471z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Three new limonoids, named haperforins C2 (1), F (2), and G (3), were isolated from a sample of Harrisonia perforata leaves collected in Central Vietnam. Their structures were determined by single-crystal X-ray diffraction analyses, and their NMR and mass spectral data are reported.
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Affiliation(s)
- Q Khuong-Huu
- Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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48
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Razet R, Thomet U, Furtmüller R, Chiaroni A, Sigel E, Sieghart W, Dodd RH. 5-[1'-(2'-N-Arylsulfonyl-1',2',3',4'-tetrahydroisoquinolyl)]-4, 5-dihydro-2(3H)-furanones: positive allosteric modulators of the GABA(A) receptor with a new mode of action. J Med Chem 2000; 43:4363-6. [PMID: 11087560 DOI: 10.1021/jm001049i] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R Razet
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, 91198 Gif-sur-Yvette Cedex, France
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49
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Croisy-Delcey M, Croisy A, Carrez D, Huel C, Chiaroni A, Ducrot P, Bisagni E, Jin L, Leclercq G. Diphenyl quinolines and isoquinolines: synthesis and primary biological evaluation. Bioorg Med Chem 2000; 8:2629-41. [PMID: 11092548 DOI: 10.1016/s0968-0896(00)00194-2] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The synthesis of a series of 35 substituted 3,4-diphenyl quinolines and isoquinolines is described. The majority of these molecules differ from all other triphenylethylene based antiestrogens by a different spatial location of the aminoalkyl side chain. The binding affinity of the most representative molecules (8, 9, 19, 20, 21, 23 and 25), including analogues 8 and 21 without the side chain, for the estrogen receptor alpha (ER) was determined. The ability of these molecules to induce the progesterone receptor was also studied. Antiproliferative activity was evaluated on MCF-7 human breast cancer cells, while intrinsic cytotoxic/cytostatic properties resulting from interaction with other targets than ER were assayed on L1210 murine leukemia cells. Introduction of an aminoalkylamino side chain at carbon 2 confers strong cytotoxic properties to diphenylquinolines 9 and 10 as well as pure antiestrogenic activities. However, cytotoxicity is so high with respect to antiestrogenicity that the latter was clearly observable only in one case (9b). The structure of compound 9b was determined by X-ray crystallography. Molecular modeling of its docking within the hormone-binding domain of the receptor was subsequently undertaken. According to our results, the design of molecules with the side chain bound to the ethylene part of the triphenyl ethylene skeleton might generate compounds of potential pharmacological interest.
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Affiliation(s)
- M Croisy-Delcey
- UAMR 176 CNRS lnstitut Curie-Recherche, Laboratoire Raymond Latarjet, Centre Universitaire, Orsay, France.
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50
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Poupon E, Luong BX, Chiaroni A, Kunesch N, Husson HP. New building blocks for tackling the synthesis of polyhydroxylated piperidines: expeditious synthesis of amino derivatives in the 1-deoxynojirimycin series. J Org Chem 2000; 65:7208-10. [PMID: 11031051 DOI: 10.1021/jo000434c] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E Poupon
- UMR 8638 du CNRS Associée à l'Université René Descartes (Paris V), Faculté des Sciences Pharmaceutiques, 4, Avenue de l'Observatoire 75270 Paris, Cedex 06, France
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