1
|
Matador E, Tilby MJ, Saridakis I, Pedrón M, Tomczak D, Llaveria J, Atodiresei I, Merino P, Ruffoni A, Leonori D. A Photochemical Strategy for the Conversion of Nitroarenes into Rigidified Pyrrolidine Analogues. J Am Chem Soc 2023; 145:27810-27820. [PMID: 38059920 DOI: 10.1021/jacs.3c10863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Bicyclic amines are important motifs for the preparation of bioactive materials. These species have well-defined exit vectors that enable accurate disposition of substituents toward specific areas of chemical space. Of all possible skeletons, the 2-azabicyclo[3.2.0]heptane framework is virtually absent from MedChem libraries due to a paucity of synthetic methods for its preparation. Here, we report a modular synthetic strategy that utilizes nitroarenes as flat and easy-to-functionalize feedstocks for the assembly of these sp3-rich materials. Mechanistically, this approach exploits two concomitant photochemical processes that sequentially ring-expand the nitroarene into an azepine and then fold it into a rigid bicycle pyrroline by means of singlet nitrene-mediated nitrogen insertion and excited-state-4π electrocyclization. A following hydrogenolysis provides, with full diastereocontrol, the desired bicyclic amine derivatives whereby the aromatic substitution pattern has been translated into the one of the three-dimensional heterocycle. These molecules can be considered rigid pyrrolidine analogues with a well-defined orientation of their substituents. Furthermore, unsupervised clustering of an expansive virtual database of saturated N-heterocycles revealed these derivatives as effective isosteres of rigidified piperidines. Overall, this platform enables the conversion of nitroarene feedstocks into complex sp3-rich heterocycles of potential interest to drug development.
Collapse
Affiliation(s)
- Esteban Matador
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Prof. García González 1, 41012 Sevilla, Spain
| | - Michael J Tilby
- Department of Chemistry, University of Manchester, M13 9PL Manchester, U.K
| | - Iakovos Saridakis
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Manuel Pedrón
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, 50009 Zaragoza, Spain
| | - Dawid Tomczak
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Josep Llaveria
- Global Discovery Chemistry, Therapeutics Discovery, Janssen Research & Development, Janssen Research & Development, Janssen-Cilag S.A., Jarama 75A, 45007 Toledo, Spain
| | - Iuliana Atodiresei
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Pedro Merino
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, 50009 Zaragoza, Spain
| | - Alessandro Ruffoni
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Daniele Leonori
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| |
Collapse
|
2
|
Nguyen NT, Dai VV, Tri NN, Van Meervelt L, Trung NT, Dehaen W. Experimental and theoretical studies on the synthesis of 1,4,5-trisubstituted pyrrolidine-2,3-diones. Beilstein J Org Chem 2022; 18:1140-1153. [PMID: 36105726 PMCID: PMC9443309 DOI: 10.3762/bjoc.18.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 08/18/2022] [Indexed: 11/23/2022] Open
Abstract
Substituted 4-acetyl-3-hydroxy-3-pyrroline-2-ones have been prepared via three-component reactions and the tautomerism of these 3-pyrroline-2-ones is due to the slight difference of energy, and the significantly large rate constant of transformation between two tautomers. 1,4,5-Trisubstituted pyrrolidine-2,3-dione derivatives were prepared from the above mentioned 2-pyrrolidinone derivatives and aliphatic amines, which exist in enamine form and are stabilized by an intramolecular hydrogen bond. A possible reaction mechanism between 3-pyrroline-2-one and aliphatic amine (CH3NH2) was proposed based on computational results and the main product is formed favorably following the PES via the lowest ΔG# pathway in both the gas-phase and an ethanol solvent model. DFT calculations showed that kinetic selectivity is more significant than thermodynamic selectivity for forming main products.
Collapse
Affiliation(s)
- Nguyen Tran Nguyen
- Department of Chemistry, University of Science and Education, the University of Da Nang, Ton Duc Thang 459, 550000 Da Nang, Viet Nam
| | - Vo Viet Dai
- Department of Chemistry, University of Science and Education, the University of Da Nang, Ton Duc Thang 459, 550000 Da Nang, Viet Nam
| | - Nguyen Ngoc Tri
- Laboratory of Computational Chemistry and Modelling, Faculty of Natural Sciences, Quy Nhon University, An Duong Vuong 170, 820000 Quy Nhon, Viet Nam
| | - Luc Van Meervelt
- Biomolecular Architecture, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Nguyen Tien Trung
- Laboratory of Computational Chemistry and Modelling, Faculty of Natural Sciences, Quy Nhon University, An Duong Vuong 170, 820000 Quy Nhon, Viet Nam
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| |
Collapse
|
3
|
del Corte X, López-Francés A, Villate-Beitia I, Sainz-Ramos M, Martínez de Marigorta E, Palacios F, Alonso C, de los Santos JM, Pedraz JL, Vicario J. Multicomponent Synthesis of Unsaturated γ-Lactam Derivatives. Applications as Antiproliferative Agents through the Bioisosterism Approach: Carbonyl vs. Phosphoryl Group. Pharmaceuticals (Basel) 2022; 15:ph15050511. [PMID: 35631337 PMCID: PMC9144317 DOI: 10.3390/ph15050511] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 12/16/2022] Open
Abstract
We report efficient synthetic methodologies for the preparation of 3-amino and 3-hydroxy 3-pyrrolin-2-ones (unsaturated γ-lactams) through a multicomponent reaction of amines, aldehydes and acetylene or pyruvate derivatives. The densely substituted γ-lactam substrates show in vitro cytotoxicity, inhibiting the growth of the carcinoma human tumor cell lines RKO (human colon epithelial carcinoma), SKOV3 (human ovarian carcinoma) and A549 (carcinomic human alveolar basal epithelial cell). In view of the possibilities for the diversity of the substituents that offer a multicomponent, synthetic methodology, an extensive structure–activity profile is presented. In addition, the bioisosteric replacement of the flat ester group by a tetrahedral phosphonate or phosphine oxide moiety in γ-lactam substrates leads to increased growth inhibition activity. Cell morphology analysis and flow cytometry assays indicate that the main pathway by which our compounds induce cytotoxicity is based on the activation of the intracellular apoptotic mechanism.
Collapse
Affiliation(s)
- Xabier del Corte
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (X.d.C.); (A.L.-F.); (E.M.d.M.); (F.P.); (C.A.); (J.M.d.l.S.)
| | - Adrián López-Francés
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (X.d.C.); (A.L.-F.); (E.M.d.M.); (F.P.); (C.A.); (J.M.d.l.S.)
| | - Ilia Villate-Beitia
- NanoBioCel Group, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (M.S.-R.)
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
- Bioaraba, NanoBioCel Research Group, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
| | - Myriam Sainz-Ramos
- NanoBioCel Group, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (M.S.-R.)
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
- Bioaraba, NanoBioCel Research Group, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
| | - Edorta Martínez de Marigorta
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (X.d.C.); (A.L.-F.); (E.M.d.M.); (F.P.); (C.A.); (J.M.d.l.S.)
| | - Francisco Palacios
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (X.d.C.); (A.L.-F.); (E.M.d.M.); (F.P.); (C.A.); (J.M.d.l.S.)
| | - Concepción Alonso
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (X.d.C.); (A.L.-F.); (E.M.d.M.); (F.P.); (C.A.); (J.M.d.l.S.)
| | - Jesús M. de los Santos
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (X.d.C.); (A.L.-F.); (E.M.d.M.); (F.P.); (C.A.); (J.M.d.l.S.)
| | - José Luis Pedraz
- NanoBioCel Group, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (M.S.-R.)
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
- Bioaraba, NanoBioCel Research Group, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
- Correspondence: (J.L.P.); (J.V.)
| | - Javier Vicario
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (X.d.C.); (A.L.-F.); (E.M.d.M.); (F.P.); (C.A.); (J.M.d.l.S.)
- Correspondence: (J.L.P.); (J.V.)
| |
Collapse
|
4
|
A Multicomponent Protocol for the Synthesis of Highly Functionalized γ-Lactam Derivatives and Their Applications as Antiproliferative Agents. Pharmaceuticals (Basel) 2021; 14:ph14080782. [PMID: 34451879 PMCID: PMC8400033 DOI: 10.3390/ph14080782] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/30/2021] [Accepted: 08/05/2021] [Indexed: 01/13/2023] Open
Abstract
An efficient synthetic methodology for the preparation of 3-amino 1,5-dihydro-2H-pyrrol-2-ones through a multicomponent reaction of amines, aldehydes, and pyruvate derivatives is reported. In addition, the densely substituted lactam substrates show in vitro cytotoxicity, inhibiting the growth of carcinoma human tumor cell lines HEK293 (human embryonic kidney), MCF7 (human breast adenocarcinoma), HTB81 (human prostate carcinoma), HeLa (human epithelioid cervix carcinoma), RKO (human colon epithelial carcinoma), SKOV3 (human ovarian carcinoma), and A549 (carcinomic human alveolar basal epithelial cell). Given the possibilities in the diversity of the substituents that offer the multicomponent synthetic methodology, an extensive structure-activity profile is presented. In addition, both enantiomers of phosphonate-derived γ-lactam have been synthesized and isolated and a study of the cytotoxic activity of the racemic substrate vs. its two enantiomers is also presented. Cell morphology analysis and flow cytometry assays indicate that the main pathway by which our compounds induce cytotoxicity is based on the activation of the intracellular apoptotic mechanism.
Collapse
|
5
|
Shcherbakova V, Dibchak D, Snisarenko M, Skalenko Y, Denisenko AV, Kuznetsova AS, Mykhailiuk PK. Bicyclic Piperidines via [2 + 2] Photocycloaddition. J Org Chem 2021; 86:2200-2209. [PMID: 33211487 DOI: 10.1021/acs.joc.0c02355] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A synthetic strategy to fused bicyclic piperidines-building blocks for medicinal chemistry-is developed. The key step was an intramolecular [2 + 2]-photocyclization. The photochemical step was performed on a gram scale. Crystallographic analysis of the obtained compounds revealed that they occupy a novel chemical space and can be considered as elongated analogues of 3-substituted piperidines.
Collapse
Affiliation(s)
| | | | | | - Yevhen Skalenko
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine.,V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry NAS of Ukraine, Murmanska 1, 02094 Kyiv, Ukraine
| | | | | | - Pavel K Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
| |
Collapse
|
6
|
Khan I, Ibrar A, Zaib S. Alkynoates as Versatile and Powerful Chemical Tools for the Rapid Assembly of Diverse Heterocycles under Transition-Metal Catalysis: Recent Developments and Challenges. Top Curr Chem (Cham) 2021; 379:3. [PMID: 33398642 DOI: 10.1007/s41061-020-00316-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Heterocycles, heteroaromatics and spirocyclic entities are ubiquitous components of a wide plethora of synthetic drugs, biologically active natural products, marketed pharmaceuticals and agrochemical targets. Recognizing their high proportion in drugs and rich pharmacological potential, these invaluable structural motifs have garnered significant interest, thus enabling the development of efficient catalytic methodologies providing access to architecturally complex and diverse molecules with high atom-economy and low cost. These chemical processes not only allow the formation of diverse heterocycles but also utilize a range of flexible and easily accessible building units in a single operation to discover diversity-oriented synthetic approaches. Alkynoates are significantly important, diverse and powerful building blocks in organic chemistry due to their unique and inherent properties such as the electronic bias on carbon-carbon triple bonds posed by electron-withdrawing groups or the metallic coordination site provided by carbonyl groups. The present review highlights the comprehensive picture of the utility of alkynoates (2007-2019) for the synthesis of various heterocycles (> 50 types) using transition-metal catalysts (Ru, Rh, Pd, Ir, Ag, Au, Pt, Cu, Mn, Fe) in various forms. The valuable function of versatile alkynoates (bearing multifunctional groups) as simple and useful starting materials is explored, thus cyclizing with an array of coupling partners to deliver a broad range of oxygen-, nitrogen-, sulfur-containing heterocycles alongside fused-, and spiro-heterocyclic compounds. In addition, these examples will also focus the scope and reaction limitations, as well as mechanistic investigations into the synthesis of these heterocycles. The biological significance will also be discussed, citing relevant examples of drug molecules highlighting each class of heterocycles. This review summarizes the recent developments in the synthetic methods for the synthesis of various heterocycles using alkynoates as readily available starting materials under transition-metal catalysis.
Collapse
Affiliation(s)
- Imtiaz Khan
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, KPK-22620, Pakistan
| | - Sumera Zaib
- Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore, 54590, Pakistan
| |
Collapse
|
7
|
Kaur N, Verma Y, Grewal P, Ahlawat N, Bhardwaj P, Jangid NK. Photochemical C–N bond forming reactions for the synthesis of five-membered fused N-heterocycles. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1713378] [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)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | | |
Collapse
|
8
|
Tikhov RM, Kuznetsov NY. Construction of piperidine-2,4-dione-type azaheterocycles and their application in modern drug development and natural product synthesis. Org Biomol Chem 2020; 18:2793-2812. [DOI: 10.1039/d0ob00287a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The review surveys the existing routes to piperidine-2,4-dione-type heterocycles including derivatives with the most vital types of biological activity. This heterocyclic platform is ideal for the construction of modern drugs and natural products.
Collapse
Affiliation(s)
- Rabdan M. Tikhov
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Nikolai Yu. Kuznetsov
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russian Federation
| |
Collapse
|
9
|
Kaur N, Devi M, Verma Y, Grewal P, Bhardwaj P, Ahlawat N, Jangid NK. Photochemical Synthesis of Fused Five-membered O-heterocycles. CURRENT GREEN CHEMISTRY 2019. [DOI: 10.2174/2213346106666190904145200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Some transformations are not possible with ground-state reactions even in the presence of a
catalyst, hence they are performed under photochemical conditions. Electron transfer occurs even with
the photochemical excitement of one molecule where redox reaction is not possible at the ground
state. The side products are obtained from ground-state reactions. For C-C bond formation during photochemical
reactions, there is no requirement of any chemical activation of the substrates. Therefore,
these reactions are presented here for the synthesis of fused five-membered O-heterocycles in the context
of sustainable processes from 1964 to 2019.
Collapse
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Meenu Devi
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | | |
Collapse
|
10
|
Oderinde MS, Kempson J, Smith D, Meanwell NA, Mao E, Pawluczyk J, Vetrichelvan M, Pitchai M, Karmakar A, Rampulla R, Li J, Murali Dhar TG, Mathur A. Intramolecular [2+2] Cycloaddition of N-Allylcinnamamines and N
-Allylcinnamamides by Visible-Light Photocatalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901482] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Martins S. Oderinde
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - James Kempson
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Daniel Smith
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Nicholas A. Meanwell
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Edna Mao
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Joseph Pawluczyk
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Muthalagu Vetrichelvan
- Department of Discovery Synthesis; Biocon Bristol-Myers Squibb Research Centre, Plot 2 & 3; Bommasandra Industrial Estate - Phase-IV; Bommasandra-Jigani Link Road 560099 Bengaluru Karnataka India
| | - Manivel Pitchai
- Department of Discovery Synthesis; Biocon Bristol-Myers Squibb Research Centre, Plot 2 & 3; Bommasandra Industrial Estate - Phase-IV; Bommasandra-Jigani Link Road 560099 Bengaluru Karnataka India
| | - Ananta Karmakar
- Department of Discovery Synthesis; Biocon Bristol-Myers Squibb Research Centre, Plot 2 & 3; Bommasandra Industrial Estate - Phase-IV; Bommasandra-Jigani Link Road 560099 Bengaluru Karnataka India
| | - Richard Rampulla
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Jianqing Li
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; 100 Binney Street 02142 Cambridge MA USA
| | - T. G. Murali Dhar
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Arvind Mathur
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| |
Collapse
|
11
|
Skalenko YA, Druzhenko TV, Denisenko AV, Samoilenko MV, Dacenko OP, Trofymchuk SA, Grygorenko OO, Tolmachev AA, Mykhailiuk PK. [2+2]-Photocycloaddition of N-Benzylmaleimide to Alkenes As an Approach to Functional 3-Azabicyclo[3.2.0]heptanes. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00077] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yevhen A. Skalenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Institute of High Technologies, Academician Glushkov av. 4G, Kyiv 03022, Ukraine
| | - Tetiana V. Druzhenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Institute of High Technologies, Academician Glushkov av. 4G, Kyiv 03022, Ukraine
| | - Aleksandr V. Denisenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Maryna V. Samoilenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
| | - Oleksandr P. Dacenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
| | - Serhii A. Trofymchuk
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
| | - Oleksandr O. Grygorenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Andrey A. Tolmachev
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| |
Collapse
|
12
|
Druzhenko T, Skalenko Y, Samoilenko M, Denisenko A, Zozulya S, Borysko PO, Sokolenko MI, Tarasov A, Mykhailiuk PK. Photochemical Synthesis of 2-Azabicyclo[3.2.0]heptanes: Advanced Building Blocks for Drug Discovery. Synthesis of 2,3-Ethanoproline. J Org Chem 2018; 83:1394-1401. [DOI: 10.1021/acs.joc.7b02910] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tetiana Druzhenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine, www.enamine.net
- Institute
of High Technologies, Taras Shevchenko National University of Kyiv, Glushkov Avenue 4g, Kyiv 03022, Ukraine
| | - Yevhen Skalenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine, www.enamine.net
- Institute
of High Technologies, Taras Shevchenko National University of Kyiv, Glushkov Avenue 4g, Kyiv 03022, Ukraine
| | - Maryna Samoilenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine, www.enamine.net
| | | | - Sergey Zozulya
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine, www.enamine.net
| | - Petro O. Borysko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine, www.enamine.net
| | | | - Alexandr Tarasov
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine, www.enamine.net
| | - Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine, www.enamine.net
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska
64, Kyiv 01033, Ukraine
| |
Collapse
|
13
|
Sharghi H, Aboonajmi J, Mozaffari M, Doroodmand MM, Aberi M. Application and developing of iron‐doped multi‐walled carbon nanotubes (Fe/MWCNTs) as an efficient and reusable heterogeneous nanocatalyst in the synthesis of heterocyclic compounds. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4124] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hashem Sharghi
- Department of Chemistry, College of SciencesShiraz University Shiraz 71454 Iran
| | - Jasem Aboonajmi
- Department of Chemistry, College of SciencesShiraz University Shiraz 71454 Iran
| | - Mozhdeh Mozaffari
- Department of Chemistry, College of SciencesShiraz University Shiraz 71454 Iran
| | | | - Mahdi Aberi
- Department of Chemistry, College of SciencesShiraz University Shiraz 71454 Iran
| |
Collapse
|
14
|
Denisenko AV, Druzhenko T, Skalenko Y, Samoilenko M, Grygorenko OO, Zozulya S, Mykhailiuk PK. Photochemical Synthesis of 3-Azabicyclo[3.2.0]heptanes: Advanced Building Blocks for Drug Discovery. J Org Chem 2017; 82:9627-9636. [DOI: 10.1021/acs.joc.7b01678] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aleksandr V. Denisenko
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
| | - Tetiana Druzhenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
- Institute of High Technologies, Academician Glushkov av. 4G, Kyiv 03022, Ukraine
| | - Yevhen Skalenko
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
| | - Maryna Samoilenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
| | - Oleksandr O. Grygorenko
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
| | - Sergey Zozulya
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
- ChemBioCenter, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Pavel K. Mykhailiuk
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
| |
Collapse
|
15
|
Hölzl A, Bach T. Structural rearrangement cascade initiated by irradiation of but-3-enyl orotates. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2015.09.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
16
|
Böhm A, Bach T. Radical Reactions Induced by Visible Light in Dichloromethane Solutions of Hünig's Base: Synthetic Applications and Mechanistic Observations. Chemistry 2016; 22:15921-15928. [PMID: 27628907 DOI: 10.1002/chem.201603303] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Indexed: 11/07/2022]
Abstract
β-(3-Iodopropoxy)-substituted α,β-unsaturated lactams, lactones, and cycloalkenones (eight examples) underwent reductive radical reactions in a dichloromethane solution of N,N-diisopropylethylamine (Hünig's base) upon irradiation with visible light (λ=419 nm). Apart from plain reduction reactions (hydro-de-iodination), a significant degree of cyclization was observed in three cases. In parallel to the conversion of the substrates, the formation of intensely colored by-products was observed. Based on mass spectrometric evidence and upon comparison with known compounds, the by-products were identified as cyanine dyes. Their formation supports the hypothesis that irradiation of dichloromethane solutions of Hünig's base leads to the formation of radicals, which in turn can either initiate a radical reaction or combine with cyanine precursors. It was shown by deuterium-labelling experiments, that one equivalent of dichloromethane is incorporated into the cyanine dyes and that the reductive quenching of radical intermediates is at least partially due to hydrogen abstraction from the solvent. As a consequence, a reductive cyclization of the starting materials is favored in CD2 Cl2 solutions as shown for two β-(3-iodopropoxy)-substituted tetronates, which underwent in dichloromethane almost exclusive reduction, but gave predominantly the cyclization products in CD2 Cl2 .
Collapse
Affiliation(s)
- Alexander Böhm
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstraße 4, 85747, Garching, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstraße 4, 85747, Garching, Germany.
| |
Collapse
|
17
|
Poplata S, Tröster A, Zou YQ, Bach T. Recent Advances in the Synthesis of Cyclobutanes by Olefin [2 + 2] Photocycloaddition Reactions. Chem Rev 2016; 116:9748-815. [PMID: 27018601 PMCID: PMC5025837 DOI: 10.1021/acs.chemrev.5b00723] [Citation(s) in RCA: 661] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 11/30/2022]
Abstract
The [2 + 2] photocycloaddition is undisputedly the most important and most frequently used photochemical reaction. In this review, it is attempted to cover all recent aspects of [2 + 2] photocycloaddition chemistry with an emphasis on synthetically relevant, regio-, and stereoselective reactions. The review aims to comprehensively discuss relevant work, which was done in the field in the last 20 years (i.e., from 1995 to 2015). Organization of the data follows a subdivision according to mechanism and substrate classes. Cu(I) and PET (photoinduced electron transfer) catalysis are treated separately in sections 2 and 4 , whereas the vast majority of photocycloaddition reactions which occur by direct excitation or sensitization are divided within section 3 into individual subsections according to the photochemically excited olefin.
Collapse
Affiliation(s)
- Saner Poplata
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Andreas Tröster
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - You-Quan Zou
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| |
Collapse
|
18
|
Chopin N, Yanai H, Iikawa S, Pilet G, Bouillon JP, Médebielle M. A Rapid Entry to Diverse γ-Ylidenetetronate Derivatives through Regioselective Bromination of Tetronic Acid Derived γ-Lactones and Metal-Catalyzed Postfunctionalization. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500663] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
19
|
Evans V, Mahon MF, Webster RL. A mild, copper-catalysed amide deprotection strategy: use of tert-butyl as a protecting group. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.080] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
20
|
de Nanteuil F, De Simone F, Frei R, Benfatti F, Serrano E, Waser J. Cyclization and annulation reactions of nitrogen-substituted cyclopropanes and cyclobutanes. Chem Commun (Camb) 2014; 50:10912-28. [DOI: 10.1039/c4cc03194f] [Citation(s) in RCA: 224] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This feature article covers recent progress in cyclization and annulation reactions of aminocyclopropanes and aminocyclobutanes to access nitrogen-rich building blocks.
Collapse
Affiliation(s)
- F. de Nanteuil
- Laboratory of Catalysis and Organic Synthesis
- Ecole Polytechnique Fédérale de Lausanne
- EPFL SB ISIC LCSO
- 1015 Lausanne, Switzerland
| | - F. De Simone
- Laboratory of Catalysis and Organic Synthesis
- Ecole Polytechnique Fédérale de Lausanne
- EPFL SB ISIC LCSO
- 1015 Lausanne, Switzerland
| | - R. Frei
- Laboratory of Catalysis and Organic Synthesis
- Ecole Polytechnique Fédérale de Lausanne
- EPFL SB ISIC LCSO
- 1015 Lausanne, Switzerland
| | - F. Benfatti
- Laboratory of Catalysis and Organic Synthesis
- Ecole Polytechnique Fédérale de Lausanne
- EPFL SB ISIC LCSO
- 1015 Lausanne, Switzerland
| | - E. Serrano
- Laboratory of Catalysis and Organic Synthesis
- Ecole Polytechnique Fédérale de Lausanne
- EPFL SB ISIC LCSO
- 1015 Lausanne, Switzerland
| | - J. Waser
- Laboratory of Catalysis and Organic Synthesis
- Ecole Polytechnique Fédérale de Lausanne
- EPFL SB ISIC LCSO
- 1015 Lausanne, Switzerland
| |
Collapse
|
21
|
Bibal B, Mongin C, Bassani DM. Template effects and supramolecular control of photoreactions in solution. Chem Soc Rev 2014; 43:4179-98. [DOI: 10.1039/c3cs60366k] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
22
|
Sajadikhah SS, Maghsoodlou MT, Hazeri N. Efficient and extremely facile one-pot four-component synthesis of mono and bis-N-aryl/alkyl-3-aminodihydropyrrol-2-one-4-carboxylates catalyzed by p-TsOH·H2O. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1364-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
23
|
Diaba F, Montiel JA, Martínez-Laporta A, Bonjoch J. Dearomative radical spirocyclization from N-ce:raghubenzyltrichloroacetamides revisited using a copper(I)-mediated atom transfer reaction leading to 2-azaspiro[4.5]decanes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
24
|
Lv L, Zheng S, Cai X, Chen Z, Zhu Q, Liu S. Development of four-component synthesis of tetra- and pentasubstituted polyfunctional dihydropyrroles: free permutation and combination of aromatic and aliphatic amines. ACS COMBINATORIAL SCIENCE 2013; 15:183-92. [PMID: 23425098 DOI: 10.1021/co300148c] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We previously reported the novel efficient proton/heat-promoted four-component reactions (4CRs) of but-2-ynedioates, two same/different primary amines, and aldehydes for the synthesis of tetra- and pentasubstituted polyfunctional dihydropyrroles. If aromatic and aliphatic amines were used as reagents, four different series of products should be obtained via the permutation and combination of aromatic and aliphatic primary amines. However, only three/two rather four different series of tetra-/pentasubstisuted dihydropyrroles could be prepared via the proton/heat-promoted 4CRs. Herein, Cu(OAc)2·H2O, a Lewis acid being stable in air and water, was found to be an efficient catalyst for the 4CR synthesis of all the four different series of tetra-/pentasubstisuted dihydropyrroles. The copper-catalyzed 4CR could produce target products at room temperature in good to excellent yields. Interestingly, benzaldehyde, in addition to being used as a useful reactant for the synthesis of pentasubstituted dihydropyrroles, was found to be an excellent additive for preventing the oxidation of aromatic amines with copper(II) and ensuring the sooth conduct of the 4CRs for the synthesis of tetrasubstituted dihydropyrroles with aryl R(3). In addition, salicylic acid was found to be needed to increase the activities and yields of the copper-catalyzed 4CRs for the synthesis of petasubstituted diyhydropyrroles. On the basis of experimental results, the enamination/amidation/intramolecular cyclization mechanism was proposed and amidation is expected to be the rate-limited step in the copper-catalyzed 4CRs.
Collapse
Affiliation(s)
- Longyun Lv
- School of
Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou
510515, China
| | - Sichao Zheng
- School of
Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou
510515, China
| | - Xiaotie Cai
- School of
Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou
510515, China
| | - Zhipeng Chen
- School of
Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou
510515, China
| | - Qiuhua Zhu
- School of
Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou
510515, China
| | - Shuwen Liu
- School of
Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou
510515, China
| |
Collapse
|
25
|
|
26
|
Luo Y, Lu X, Ye Y, Guo Y, Jiang H, Zeng W. Pd-catalyzed tandem cyclization of ethyl glyoxalate and amines: rapid assembly of highly substituted cyclic dehydro-α-amino acid derivatives. Org Lett 2012; 14:5640-3. [PMID: 23101491 DOI: 10.1021/ol302483f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A novel cascade cyclization of ethyl glyoxalate and amines proceeds in the presence of Pd(TFA)(2) (5 mol %) to give the cyclic dehydro-α-amino acid derivatives. This method provides a fast and simple access to highly substituted dihydro-pyrrol-2-ones in good yields.
Collapse
Affiliation(s)
- Yueting Luo
- School of Chemistry and Chemical Engineering, South China University of Technology, No. 381, Wushan Road, Tianhe District, Guangzhou 510641, China
| | | | | | | | | | | |
Collapse
|
27
|
Khan AT, Ghosh A, Musawwer Khan M. One-pot four-component domino reaction for the synthesis of substituted dihydro-2-oxypyrrole catalyzed by molecular iodine. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.046] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
28
|
André V, Vidal A, Ollivier J, Robin S, Aitken DJ. Rapid access to cis-cyclobutane γ-amino acids in enantiomerically pure form. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
29
|
Zhu Q, Jiang H, Li J, Liu S, Xia C, Zhang M. Concise and versatile multicomponent synthesis of multisubstituted polyfunctional dihydropyrroles. ACTA ACUST UNITED AC 2010; 11:685-96. [PMID: 19552380 DOI: 10.1021/cc900046f] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tetra- and pentasubstituted polyfunctional dihydropyrroles have been concisely synthesized in high yields by two different processes of the one-pot multicomponent reactions (MCRs) of but-2-ynedioates 1, amines 2, and aldehydes 3 at room temperature or at 70 degrees C. The first one involves a domino hydroamination/nucleophilic addition/amidation-cyclization process and leads to the formation of tetrasubstituted polyfunctional dihydropyrroles 4. The second undergoes hydroamination/amidation/intramolecular cyclization/imine-enamine tautomerization sequence and results in pentasubstituted products 5. The structures of 4 and 5 were confirmed by single-crystal X-ray diffraction. These novel methodologies provide easy access to diversely multisubstituted polyfunctional dihydropyrrole libraries. The primary biological screening in vitro against HIV-1 has shown that 22 tested compounds have exhibited significant activity with IC(50) in micromolar range (38-58 microM).
Collapse
Affiliation(s)
- Qiuhua Zhu
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Guangzhou, China
| | | | | | | | | | | |
Collapse
|
30
|
Unprecedented copper(I)-catalyzed photochemical reaction of diethyl ether with vicinal diols and ketals. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.06.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
31
|
Prousis KC, Markopoulos J, Mckee V, Igglessi-Markopoulou O. Efficient construction of functionalized 5-carboxymethyl tetramic acids using N-Ac-l-aspartic anhydride as chiral building block. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
32
|
Albrecht D, Vogt F, Bach T. Diastereo- and Enantioselective Intramolecular [2+2] Photocycloaddition Reactions of 3-(ω′-Alkenyl)- and 3-(ω′-Alkenyloxy)-Substituted 5,6-Dihydro-1H-pyridin-2-ones. Chemistry 2010; 16:4284-96. [DOI: 10.1002/chem.200902616] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
33
|
SOMEKAWA K, ODO Y, OOTO T, HASHIMOTO H, MIYAJI J, SHIMO T. Formation of Chiral Photopyridones by Host-Guest Interaction and Molecular Orbital Analysis of the Energy and Stereochemical Changes. JOURNAL OF COMPUTER CHEMISTRY-JAPAN 2010. [DOI: 10.2477/jccj.h2120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
34
|
Somekawa K, Odo Y, Shimo T. Molecular Simulations of Photoaddition Selectivity and Chirality in Challenging Photochemical Reactions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.1447] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|