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Rhodium(III)-catalyzed chelation-assisted C-H imidation of arenes via umpolung of the imidating reagent. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63587-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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5-Arylisothiazol-3(2H)-one-1,(1)-(di)oxides: A new class of selective tumor-associated carbonic anhydrases (hCA IX and XII) inhibitors. Eur J Med Chem 2019; 175:40-48. [PMID: 31071549 DOI: 10.1016/j.ejmech.2019.04.072] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 12/20/2022]
Abstract
Sixteen 5-aryl-substituted isothiazol-3(2H)-one-1,(1)-(di)oxide analogs have been prepared from the corresponding 5-chloroisothiazol-3(2H)-one-1-oxide or -1,1-dioxide by a Suzuki-Miyaura cross-coupling reaction and screened for their inhibition potency against four human carbonic anhydrase isoenzymes: the transmembrane tumor-associated hCA IX and XII and the cytosolic off-target hCA I and II. Most of the synthesized derivatives inhibited hCA IX and XII isoforms in nanomolar range, whereas remained inactive or modestly active against both hCA I and II isoenzymes. In the N-tert-butylisothiazolone series, the 5-phenyl-substituted analog (1a) excelled in the inhibition of tumor-associated hCA IX and XII (Ki = 4.5 and Ki = 4.3 nM, respectively) with excellent selectivity against off target hCA I and II isoenzymes (S > 2222 and S > 2325, respectively). Since the highest inhibition activities were observed with N-tert-butyl derivatives, lacking a zinc-binding group, we suppose to have a new binding mode situated out of the active site. Additionally, three free-NH containing analogs (3a, 4a, 3i) have also been prepared in order to study the impact of free-NH containing N-acyl-sulfinamide- (-SO-NH-CO-) or N-acyl-sulfonamide-type (-SO2-NH-CO-) derivatives on the inhibitory potency and selectivity. Screening experiments evidenced 5-phenylisothiazol-3(2H)-one-1,1-dioxide (4a), the closest saccharin analog, to be the most active derivative with inhibition constants of Ki = 40.3 nM and Ki = 9.6 nM against hCA IX and hCA XII, respectively. The promising biological results support the high potential of 5-arylisothiazolinone-1,(1)-(di)oxides to be exploited for the design of potent and cancer-selective carbonic anhydrase inhibitors.
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Brockmeyer F, Schoemaker R, Schmidtmann M, Martens J. Multicomponent reaction for the first synthesis of 2,2-dialkyl- and 2-alkyl-2-aralkyl-5,6-diaryl-2H-1,3-thiazines as scaffolds for various 3,4-dihydro-2H-1,3-thiazine derivatives. Org Biomol Chem 2014; 12:5168-81. [DOI: 10.1039/c4ob00866a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
2H-1,3-thiazines, prepared via a novel and efficient multicomponent reaction, can be used as scaffolds for the synthesis of diverse 3,4-dihydro-2H-1,3-thiazines.
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Affiliation(s)
- Fabian Brockmeyer
- Institut für Chemie
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg, Germany
| | - Robin Schoemaker
- Institut für Chemie
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg, Germany
| | - Marc Schmidtmann
- Institut für Chemie
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg, Germany
| | - Jürgen Martens
- Institut für Chemie
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg, Germany
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Bardasov IN, Golubev RV, Ershov OV, Kayukov YS, Nasakin OE. One-pot transformation of cyano oxiranes into furo[3,2-c]isothiazole derivatives. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.06.083] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zakharova VM, Brede O, Gütschow M, Kuznetsov MA, Zibinsky M, Sieler J, Schulze B. N,N′-Linked 1,2-benzisothiazol-3(2H)-one 1,1-dioxides: synthesis, biological activity, and derived radicals. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.10.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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4,5-Dialkyl-substituted 3-oxo-(2H)-isothiazole 1,1-dioxides in reactions with diazomethane. Chem Heterocycl Compd (N Y) 2008. [DOI: 10.1007/s10593-008-0065-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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El Kharrat S, Laurent P, Blancou H. Novel Synthesis, Reactivity, and Stereochemistry of Substituted 3-Trifluoromethyl- and 3-Perfluoroalkyl-3-phenoxyprop-2-enal. J Org Chem 2006; 71:6742-52. [PMID: 16930023 DOI: 10.1021/jo060764i] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Substituted 3-phenoxy-3-perfluoroalkylprop-2-enals 3a-s are synthesized in high yields starting from a gem-iodoacetoxy derivative 1 and phenoxides 2. Then efficient syntheses of push-pull derivatives 4, 5,8a,b, and nonconjugated analogues 6 and 7 illustrate the synthetic potentialities of 3. Stereochemical studies of these perfluoroalkyl-containing trisubstituted olefinic derivatives 3-8b revealed that the (4)J(CF) coupling constant observed in the (13)C NMR spectra was crucial in the determination of their configurations and conformations in solution. The solvent polarity effect on the stereochemistry of push-pull compounds 3-5 and 8a,b was studied. Unusual significant medium polarity effect on the stereochemistry of imino enol ether derivative 4 was observed.
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Affiliation(s)
- Salem El Kharrat
- Organisation Moléculaire Evolution et Matériaux Fluorés, Université Montpellier II, Pl. E. Bataillon, 34095 Montpellier Cedex 05, France
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Zakharova V, Schulze B, Rodina L, Sieler J, Nikolaev V. Fluorinated Diazo Diketones in Rhodium(II)-Catalyzed Reactions with Sultams: ChemoselectiveO-Functionalization of Amide Carbonyl Groups. Helv Chim Acta 2005. [DOI: 10.1002/hlca.200590146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Nikolaev V, Hennig L, Sieler J, Rodina L, Schulze B, Nikolaev V. Cyclic and acyclic sulfonimides in reactions with Rh(ii)-ketocarbenoids: a new access to chemoselective O-functionalization of the imidic carbonyl groups. Org Biomol Chem 2005; 3:4108-16. [PMID: 16267590 DOI: 10.1039/b508317f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic decomposition of diazoacetylacetone, diazoacetoacetic, diazomalonic, and diazoacetic esters using dirhodium tetraacetate in the presence of isothiazol-3(2H)-one 1,1-dioxides and a number of N-(arenesulfonyl)carboxamides in solutions of methylene chloride or dichloroethane gives rise to O-alkylation of the imidic carbonyl groups by Rh(II)-carbenoids and the formation of O-alkylimidates as the final products. The reaction proceeds with high chemoselectivity via carbonyl ylides and offers a powerful method for the synthesis in good yields of the imidates with polyfunctional O-alkyl groups. On the basis of X-ray analysis and 1H- and 13C-NMR studies it was shown that the resulting acyclic O-alkylimidates have the E-configuration in the solid state and in solution. Unlike acyclic analogues, the cyclic carbonyl ylide derived from substituted diazosaccharin by intramolecular cyclization of the appropriate diketocarbenoid is capable of reacting with DMAD in a 1,3-cycloaddition process.
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Affiliation(s)
- Vsevolod Nikolaev
- Saint-Petersburg State University, University prosp. 26, Saint-Petersburg, 198504, Russia
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Rahm A, Linden A, Vincent BR, Heimgartner H, Mühlstädt M, Schulze B. Ringerweiterung von 1,2-Thiazol-3(2H)-on-1,1-dioxiden und 3-Amino-2H-azirinen zu 4H-1,2,5-Thiadiazocin-6-on-1,1-dioxiden. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19910740511] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Taubert K, Sieler J, Hennig L, Findeisen M, Schulze B. Synthesis of Monocyclic Hydroperoxy- and Hydroxy-Substituted Sulfin- and Sulfonamides by Oxidation of 4,5-Dimethylisothiazolium Salts. Helv Chim Acta 2002. [DOI: 10.1002/1522-2675(200201)85:1<183::aid-hlca183>3.0.co;2-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Schulze B, Illgen K, Ng SW. Crystal structure of 5,6,7,8-tetrahydro-4H-cyclohepta[d]isothiazol-3(2H)-one 1,1-dioxide, C8H11NO3S. Z KRIST-CRYST MATER 1997. [DOI: 10.1524/zkri.1997.212.1.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Schulze B, Illgen K. Isothiazol-1,1-dioxide - vom Süßstoff zum chiralen Auxiliar in der stereoselektiven Synthese. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/prac.19973390102] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Tso HH, Chandrasekharam M. Generation of isothiazole analogues of o-quinodimethane from isothiazolo-3-sulfolenes. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)00792-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Synthesis and biological evaluation of 2,3-diarylthiophenes as selective cox-2 inhibitors. part II: Replacing the heterocycle. Bioorg Med Chem Lett 1996. [DOI: 10.1016/0960-894x(95)00564-a] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Klein J, Schulze B, Borsdorf R, Ng SW. Solution13C and119Sn NMR Spectroscopic Investigations on triorganotin derivatives of isothiazol-3(2H)-one 1,1-dioxides and their adducts with O-donor ligands. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/prac.19953370152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Schulze B, Selke D, Kirrbach S, Kempe R. Synthese neuer N-Aroylisothiazol-2-imine und N-Aroylamino-isothiazoliumsalze durch Cyclisierung von thiocyanato-substituierten Hydrazonen. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/prac.19943360204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Synthesis of novel N-aroyl- and N-arylsulfonylisothiazole-2-imines by cyclization of thiocyanatovinylaldehyde hydrazones. Tetrahedron Lett 1993. [DOI: 10.1016/s0040-4039(00)91960-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Carugo O, Clerici F, Pocarb D. Isothiazoles. Part II1. Reaction of 3-diethylamino-4-(4-methoxyphenyl)-isothiazole-1,1-dioxide with sodium azide. Tetrahedron 1993. [DOI: 10.1016/s0040-4020(01)91228-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Schulze B, Rosenbaum K, Hilbig J, Weber L. Thienoanellierte 6a?4-Thia-1,6-diazapentalene durch baseninduzierte Dimerisierung von 5-Methyl-isothiazoliumsalzen. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/prac.19923340105] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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