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Yaremenko IA, Radulov PS, Belyakova YY, Fomenkov DI, Tsogoeva SB, Terent’ev AO. Lewis Acids and Heteropoly Acids in the Synthesis of Organic Peroxides. Pharmaceuticals (Basel) 2022; 15:ph15040472. [PMID: 35455469 PMCID: PMC9025639 DOI: 10.3390/ph15040472] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/08/2022] [Accepted: 04/09/2022] [Indexed: 12/04/2022] Open
Abstract
Organic peroxides are an important class of compounds for organic synthesis, pharmacological chemistry, materials science, and the polymer industry. Here, for the first time, we summarize the main achievements in the synthesis of organic peroxides by the action of Lewis acids and heteropoly acids. This review consists of three parts: (1) metal-based Lewis acids in the synthesis of organic peroxides; (2) the synthesis of organic peroxides promoted by non-metal-based Lewis acids; and (3) the application of heteropoly acids in the synthesis of organic peroxides. The information covered in this review will be useful for specialists in the field of organic synthesis, reactions and processes of oxygen-containing compounds, catalysis, pharmaceuticals, and materials engineering.
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Affiliation(s)
- Ivan A. Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
- Correspondence: (I.A.Y.); (A.O.T.)
| | - Peter S. Radulov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
| | - Yulia Yu. Belyakova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
| | - Dmitriy I. Fomenkov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
| | - Svetlana B. Tsogoeva
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University of Erlangen–Nürnberg, Nikolaus Fiebiger-Straße 10, 91058 Erlangen, Germany;
| | - Alexander O. Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia; (P.S.R.); (Y.Y.B.); (D.I.F.)
- Correspondence: (I.A.Y.); (A.O.T.)
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Duguet N, De Dios Miguel T, Louvel D, Onida K, Lavoignat A, Picot S. Synthesis of Fatty 1,2,4-Trioxanes by Peracetalization of β-Hydroxy Hydroperoxides. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1643-3057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThe peracetalization of a β-hydroxy hydroperoxide derived from methyl oleate was studied using benzaldehyde as a model substrate to give the corresponding fatty 1,2,4-trioxane. The desired product was obtained as a mixture of regioisomers but only one diastereoisomer of each was formed. The nature of the acid catalyst was studied and both p-toluene sulfonic acid (PTSA) and Amberlyst A35 (A35) were found to be efficient homogeneous and heterogeneous catalysts, respectively. The nature of the solvent was also investigated and ethereal solvents such as 2-methyltetrahydrofuran (2-MeTHF), methyl tert-butyl ether (MTBE) and cyclopentyl methyl ether (CPME) gave the best NMR yield (85%) for the preparation of the fatty trioxane. The optimized conditions were applied to a range of aromatic and aliphatic aldehydes, and the corresponding 1,2,4-trioxanes were isolated with 30–91% yields (21 examples). The antimalarial activity of three trioxanes was studied against Plasmodium falciparum, however, no significant activity was detected (IC50 >1600 nM).
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Affiliation(s)
- Nicolas Duguet
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN)
| | - Thomas De Dios Miguel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN)
| | - Dan Louvel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN)
| | - Killian Onida
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN)
| | - Adeline Lavoignat
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe Synthèse de Molécules d’Intérêt Thérapeutique (SMITH)
| | - Stephane Picot
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS, UMR 5246, Equipe Synthèse de Molécules d’Intérêt Thérapeutique (SMITH)
- Parasitology and Mycology Department, Institute of Infectious Agents
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Karnatak M, Hassam M, Vanangamudi M, Sharma S, Kumar Yadav D, Singh C, Puri SK, Rawat V, Prakash Verma V. Novel naphthyl based 1,2,4-trioxanes: Synthesis and in vivo efficacy in the Plasmodium yoelii nigeriensis in Swiss mice. Bioorg Med Chem Lett 2021; 51:128372. [PMID: 34547418 DOI: 10.1016/j.bmcl.2021.128372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/12/2021] [Accepted: 09/12/2021] [Indexed: 10/20/2022]
Abstract
A new series of 1,2,4-trioxanes 9a1-a4, 9b1-b4, 10-13 and 9c1-c4 were synthesized and evaluated against multidrug-resistant Plasmodium yoelii nigeriensis in Swiss mice via oral and intramuscular (i.m.) routes. Adamantane-based trioxane 9b4, the most active compound of the series, provided 100% protection to the infected mice at the dose 48 mg/kg × 4 days and 100% clearance of parasitemia at the dose 24 mg/kg × 4 days via oral route. Adamantane-based trioxane 9b4, is twice active than artemisinin. We have also studied the photooxygenation behaviour of allylic alcohols 6a-b (3-(4-alkoxynaphthyl)-but-2-ene-1-ols) and 6c (3-[4-(tert-butyl-dimethyl-silanyloxy)-naphthalen-1-yl]-but-2-en-1-ol). Being behaving as dienes, they furnished corresponding endoperoxides, while behaving as allylic alcohols, they yielded β-hydroxyhydroperoxides. All the endoperoxides (7a-c) and β-hydroxyhydroperoxides (8a-c) have been separately elaborated to the corresponding 1,2,4-trioxanes, except from endoperoxide 7c. It is worthy to note that TBDMS protected naphthoyl endoperoxide 7c unable to deliver 1,2,4-trioxane, which demonstrated the strength of the O-Si bond is not easy to cleave under acidic condition.
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Affiliation(s)
- Manvika Karnatak
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | - Mohammad Hassam
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India
| | | | - Siddharth Sharma
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Dinesh Kumar Yadav
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Chandan Singh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India
| | - Sunil K Puri
- Parasitology Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India
| | - Varun Rawat
- Amity School of Applied Sciences, Amity University Haryana, Gurugram 122413, India
| | - Ved Prakash Verma
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India; Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India.
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Bordier C, Escande V, Darcel C. Past and current routes to β-hydroperoxy alcohols: A functional group with high potential in organic synthesis. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Synthesis of novel 1,2,4-trioxanes and antimalarial evaluation against multidrug-resistant Plasmodium yoelii nigeriensis. Bioorg Med Chem Lett 2021; 49:128305. [PMID: 34365007 DOI: 10.1016/j.bmcl.2021.128305] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/28/2021] [Accepted: 07/30/2021] [Indexed: 11/20/2022]
Abstract
Malaria epidemics represent one of the life-threatening diseases to low-income lying countries which subsequently affect the economic and social condition of mankind. In continuation in the development of a novel series of 1,2,4-trioxanes 13a1-c1, 13a2-c2, and 13a3-c3 have been prepared and further converted into their hemisuccinate derivatives 14a1-c1, 14a2-c2, and 14a3-c3 respectively. All these new compounds were evaluated for their antimalarial activity against multidrug-resistant Plasmodium yoelii nigeriensis in mice by both oral and intramuscular (im) routes. Hydroxy-functionalized trioxane 13a1 showed 80% protection and its hemisuccinate derivative 14a1 showed 100% protection at a dose of 48 mg/kg × 4 days by both routes, which is twice active than artemisinin by oral route.
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Tiwari MK, Coghi P, Agrawal P, Yadav DK, Yang LJ, Congling Q, Sahal D, Wai Wong VK, Chaudhary S. Novel halogenated arylvinyl-1,2,4 trioxanes as potent antiplasmodial as well as anticancer agents: Synthesis, bioevaluation, structure-activity relationship and in-silico studies. Eur J Med Chem 2021; 224:113685. [PMID: 34303874 DOI: 10.1016/j.ejmech.2021.113685] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/13/2021] [Accepted: 07/02/2021] [Indexed: 10/20/2022]
Abstract
Herein, we have synthesized a series of lipophilic, halogenated-arylvinyl-1,2,4-trioxanes 8a-g (28 compounds) and assessed for their in vitro anti-plasmodial activity in Plasmodium falciparum culture using SYBRgreen-I fluorescence assay against chloroquine-resistant Pf INDO and artemisinin-resistant Pf Cam 3.1R539T (MRA-1240) strains. Alongside, the cell cytotoxic potential of 8a-g has also been determined against the HEK293 cell line in vitro. Out of twenty-eight halogenated-arylvinyl-1,2,4-trioxanes; ten analogues (8a2, 8a4, 8b2, 8b4, 8d4, 8e1, 8e2, 8e4,8f2, and 8g4) have shown potent in vitro antiplasmodial activity with IC50 < 27 nM (IC50 range = 4.48-26.58 nM). Also, the selectivity index (SI) for these ten analogues were found in the range of 72.00-3972.50 which indicates their selective potential towards Plasmodium cells. Results of the cell cycle stage specificity with two of the most potent compounds 8a4 {(IC50 = 4.48 nM; SI = 3972.50) more potent than chloroquine (IC50 = 546 nM; SI = 36.64) and artesunate (IC50 = 6.6 nM; SI = 4333.33)} and 8e2 (IC50 = 9.69 nM; SI = 1348) against Pf INDO indicated all three stages to be the target of the action of 8e2 while only rings and trophozoites appeared to be targeted by 8a4. Ring stage survival assay against artemisinin-resistant Pf Cam 3.1R539T indicated that 8a4 may be well suited to replace artemisinin from current ACTs which are experiencing in vivo delayed parasite clearance. With intraperitoneal (i.p.) and oral (p.o.) route at the dose of 50 mg/kg/day × 4 days; 8a4 has also shown 100% suppression of parasitemia in P. berghei ANKA infected Balb C mice. Further, the in vitro anticancer activity of 8a-g performed against human lung (A549) and liver (HepG2) cancer cell lines as also against immortalized normal lung (BEAS-2B) and liver (LO2) cell lines has revealed that most of the derivatives are endowed also with promising anticancer activity (IC50 = 0.69-15 μM; SI = 1.02-20.61) in comparison with standard drugs such as chloroquine (IC50 = 100 μM; SI = 0.03), artemisinin (IC50 = 100 μM), and artesunic acid (IC50 = 9.85 μM; SI = 0.76), respectively. All the derivatives have shown moderate anticancer activity against liver (HepG2) cancer cell lines. Arylvinyl-1,2,4-trioxanes 8f2 (IC50 = 0.69 μM; SI = 16.66), the most active compound of the series, has shown ∼145 fold more cytotoxic potential with higher selectivity in comparison to reference drugs chloroquine (IC50 = 100 μM; SI = 0.03) and artemisinin (IC50 = 100 μM), respectively against the lung (A549) cancer cell line. Finally, the in-silico docking studies of the potent halogenated 1,2,4-trioxanes along with reference drug molecules against epidermal growth factor receptor (EGFR; PDB ID: 1M17) have demonstrated the strong virtual interaction.
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Affiliation(s)
- Mohit K Tiwari
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur, 302017, India
| | - Paolo Coghi
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China; School of Pharmacy, Macau University of Science and Technology, Avenida wai long, Taipa, Macau, China
| | - Prakhar Agrawal
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, 110 067, New Delhi, India
| | - Dharmendra K Yadav
- College of Pharmacy, Gachon University of Medicine and Science, Hambakmoeiro 191, Yeonsu-gu, Incheon city, 406-799, South Korea
| | - Li Jun Yang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Qiu Congling
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Dinkar Sahal
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, 110 067, New Delhi, India.
| | - Vincent Kam Wai Wong
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.
| | - Sandeep Chaudhary
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Malaviya National Institute of Technology, Jawaharlal Nehru Marg, Jaipur, 302017, India; Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research-Raebareli (Transit Campus), Bijnor-Sisendi Road, Near CRPF Base Camp, Sarojini Nagar, Lucknow, U.P, 226 002, India.
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7
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Louvel D, De Dios Miguel T, Duc Vu N, Duguet N. The Chemistry of β‐Hydroxy Hydroperoxides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100343] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Dan Louvel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Thomas De Dios Miguel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Nam Duc Vu
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Nicolas Duguet
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
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Application of BF 3·Et 2O in the synthesis of cyclic organic peroxides (microreview). Chem Heterocycl Compd (N Y) 2020; 56:1146-1148. [PMID: 33144737 PMCID: PMC7595082 DOI: 10.1007/s10593-020-02785-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/16/2020] [Indexed: 10/28/2022]
Abstract
A summary of recent applications of Lewis acid BF3·Et2O as a catalyst in the synthesis of cyclic organic peroxides is presented.
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Zhang Z, Long S, Cao J, Du J, Fan J, Peng X. Revealing the Photodynamic Stress In Situ with a Dual-Mode Two-Photon 1O 2 Fluorescent Probe. ACS Sens 2020; 5:1411-1418. [PMID: 32314569 DOI: 10.1021/acssensors.0c00303] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Singlet oxygen (1O2) plays significant physiological and pathological functions, especially in causing photodynamic stress in vivo. However, specific 1O2 monitoring is an immense challenge, owing to its short half-lives and high oxidizing ability. To address this, we engineered three photostable two-photon fluorescence probe NBs for highly efficient 1O2 monitoring based on bioinspired novel tryptophan derivatives, among which NB-MOT was the best one comprehensively. Upon being cracked with 1O2, NB-MOT rapidly (within 5 s) demonstrated a remarkable enhancement in fluorescence intensity (∼180 fold) and lifetime (∼18 fold). Taking these advantages into account, NB-MOT was applied to evaluate exogenous and endogenous 1O2 in diverse biosystems. We successfully tracked the intracellular 1O2 level during photodynamic therapy, and for the first time achieved 1O2 mapping in live cells with dual-mode imaging as well as revealed ciprofloxacin-induced photodynamic stress in mice. NB-MOT was thus believed to be of instructive significance for studying the 1O2-mediated stress in wider biological milieus.
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Affiliation(s)
- Zhen Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Saran Long
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jianfang Cao
- School of Chemical and Environmental Engineering, Liaoning University of Technology, 169 Shiying Road, Jinzhou 121001, China
| | - Jianjun Du
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jiangli Fan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
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Hou Y, Hu J, Xu R, Pan S, Zeng X, Zhong G. Indium-Mediated Synthesis of Benzylic Hydroperoxides. Org Lett 2019; 21:4428-4432. [DOI: 10.1021/acs.orglett.9b01070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuxuan Hou
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Jinjin Hu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Ruigang Xu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Shulei Pan
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiaofei Zeng
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
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Eske A, Ecker S, Fendinger C, Goldfuss B, Jonen M, Lefarth J, Neudörfl J, Spilles M, Griesbeck AG. Spirofused and Annulated 1,2,4‐Trioxepane‐, 1,2,4‐Trioxocane‐, and 1,2,4‐Trioxonane‐Cyclohexadienones: Cyclic Peroxides with Unusual Ring Conformation Dynamics. Angew Chem Int Ed Engl 2018; 57:13770-13774. [DOI: 10.1002/anie.201807485] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/02/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Angelika Eske
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Sabrina Ecker
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Carolina Fendinger
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Bernd Goldfuss
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Matthis Jonen
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Jens Lefarth
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Jörg‐M. Neudörfl
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Matthias Spilles
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
| | - Axel G. Griesbeck
- Department of ChemistryUniversity of Cologne Greinstr. 4 50939 Köln Germany
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Eske A, Ecker S, Fendinger C, Goldfuss B, Jonen M, Lefarth J, Neudörfl J, Spilles M, Griesbeck AG. Spiroverknüpfte und ringanellierte 1,2,4‐Trioxepan‐, 1,2,4‐Trioxocan‐ und 1,2,4‐Trioxonan‐Cyclohexadienone: cyclische Peroxide mit ungewöhnlicher Ringkonformationsdynamik. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Angelika Eske
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Sabrina Ecker
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Carolina Fendinger
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Bernd Goldfuss
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Matthis Jonen
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Jens Lefarth
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Jörg‐M. Neudörfl
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Matthias Spilles
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Axel G. Griesbeck
- Department für ChemieUniversität zu Köln Greinstraße 4 50939 Köln Deutschland
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Zhang M, Han Y, Niu JL, Zhang ZH. A General and Practical Approach for the Synthesis of 1,2,4-Trioxanes Catalyzed by Silica-Ferric Chloride. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700671] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Mo Zhang
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
| | - Yi Han
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
| | - Jia-Liang Niu
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
| | - Zhan-Hui Zhang
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
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14
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Griesbeck AG, Bräutigam M, Kleczka M, Raabe A. Synthetic Approaches to Mono- and Bicyclic Perortho-Esters with a Central 1,2,4-Trioxane Ring as the Privileged Lead Structure in Antimalarial and Antitumor-Active Peroxides and Clarification of the Peroxide Relevance. Molecules 2017; 22:molecules22010119. [PMID: 28085079 PMCID: PMC6155645 DOI: 10.3390/molecules22010119] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 12/21/2022] Open
Abstract
The synthesis of 4-styryl-substituted 2,3,8-trioxabicyclo[3.3.1]nonanes, peroxides with the core structure of the bioactive 1,2,4-trioxane ring, was conducted by a multistep route starting from the aryl methyl ketones 1a–1c. Condensation and reduction/oxidation delivered enals 4a–4c that were coupled with ethyl acetate and reduced to the 1,3-diol substrates 6a–6c. Highly diastereoselective photooxygenation delivered the hydroperoxides 7a–7c and subsequent PPTS (pyridinium-p-toluenesulfonic acid)-catalyzed peroxyacetalization with alkyl triorthoacetates gave the cyclic peroxides 8a–8e. These compounds in general show only moderate antimalarial activities. In order to extend the repertoire of cyclic peroxide structure, we aimed for the synthesis of spiro-perorthocarbonates from orthoester condensation of β-hydroxy hydroperoxide 9 but could only realize the monocyclic perorthocarbonate 10. That the central peroxide moiety is the key structural motif in anticancer active GST (glutathione S-transferase)-inhibitors was elucidated by the synthesis of a 1,3-dioxane 15—with a similar substitution pattern as the pharmacologically active peroxide 11—via a singlet oxygen ene route from the homoallylic alcohol 12.
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Affiliation(s)
- Axel G Griesbeck
- Department of Chemistry, University of Cologne, Greinstr. 4, 50939 Köln, Germany.
| | - Maria Bräutigam
- Department of Chemistry, University of Cologne, Greinstr. 4, 50939 Köln, Germany.
| | - Margarethe Kleczka
- Department of Chemistry, University of Cologne, Greinstr. 4, 50939 Köln, Germany.
| | - Angela Raabe
- Department of Chemistry, University of Cologne, Greinstr. 4, 50939 Köln, Germany.
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15
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Teixeira MG, Alvarenga ES. Characterization of novel isobenzofuranones by DFT calculations and 2D NMR analysis. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:623-631. [PMID: 26811211 DOI: 10.1002/mrc.4411] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 12/23/2015] [Accepted: 12/29/2015] [Indexed: 06/05/2023]
Abstract
Phthalides are frequently found in naturally occurring substances and exhibit a broad spectrum of biological activities. In the search for compounds with insecticidal activity, phthalides have been used as versatile building blocks for the syntheses of novel potential agrochemicals. In our work, the Diels-Alder reaction between furan-2(5H)-one and cyclopentadiene was used successfully to obtain (3aR,4S,7R,7aS)-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1(3H)-one and (3aS,4R,7S,7aR)-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1(3H)-one (2) and (3aS,4S,7R,7aR)-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1(3H)-one and (3aR,4R,7S,7aS)-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1(3H)-one (3). The endo adduct (2) was brominated to afford (3aR,4R,5R,7R,7aS,8R)-5,8-dibromohexahydro-4,7-methanoisobenzofuran-1(3H)-one and (3aS,4S,5S,7S,7aR,8S)-5,8-dibromohexahydro-4,7-methanoisobenzofuran-1(3H)-one (4) and (3aS,4R,5R,6S,7S,7aR)-5,6-dibromohexahydro-4,7-methanoisobenzofuran-1(3H)-one and (3aR,4S,5S,6R,7R,7aS)-5,6-dibromohexahydro-4,7-methanoisobenzofuran-1(3H)-one (5). Following the initial analysis of the NMR spectra and the proposed two novel unforeseen products, we have decided to fully analyze the classical and non-classical assay structures with the aid of computational calculations. Computation to predict the (13) C and (1) H chemical shifts for mean absolute error analyses have been carried out by gauge-including atomic orbital method at M06-2X/6-31+G(d,p) and B3LYP/6-311+G(2d,p) levels of theory for all viable conformers. Characterization of the novel unforeseen compounds (4) and (5) were not possible by employing only the experimental NMR data; however, a more conclusive structural identification was performed by comparing the experimental and theoretical (1) H and (13) C chemical shifts by mean absolute error and DP4 probability analyses. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Milena G Teixeira
- Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG, 36571-900, Brazil
| | - Elson S Alvarenga
- Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG, 36571-900, Brazil
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16
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Affiliation(s)
- Ashwini A. Ghogare
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Alexander Greer
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
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17
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Organocatalytic peroxidation of malonates, β-ketoesters, and cyanoacetic esters using n-Bu4NI/t-BuOOH-mediated intermolecular oxidative C(sp3)–O coupling. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.09.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Peroxidation of β-diketones and β-keto esters with tert-butyl hydroperoxide in the presence of Cu(ClO4)2/SiO2. Russ Chem Bull 2015. [DOI: 10.1007/s11172-014-0763-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Terent'ev AO, Sharipov MY, Krylov IB, Gaidarenko DV, Nikishin GI. Manganese triacetate as an efficient catalyst for bisperoxidation of styrenes. Org Biomol Chem 2015; 13:1439-45. [DOI: 10.1039/c4ob01823k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Bisperoxidation of styrenes with tert-butyl hydroperoxide in the presence of a catalytic amount of Mn(OAc)3.
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Affiliation(s)
- Alexander O. Terent'ev
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
- D.I. Mendeleev University of Chemical Technology of Russia
| | - Mikhail Yu. Sharipov
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
- D.I. Mendeleev University of Chemical Technology of Russia
| | - Igor B. Krylov
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Darya V. Gaidarenko
- D.I. Mendeleev University of Chemical Technology of Russia
- Moscow
- Russian Federation
| | - Gennady I. Nikishin
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
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20
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Terent'ev AO, Borisov DA, Vil’ VA, Dembitsky VM. Synthesis of five- and six-membered cyclic organic peroxides: Key transformations into peroxide ring-retaining products. Beilstein J Org Chem 2014; 10:34-114. [PMID: 24454562 PMCID: PMC3896255 DOI: 10.3762/bjoc.10.6] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/16/2013] [Indexed: 12/16/2022] Open
Abstract
The present review describes the current status of synthetic five and six-membered cyclic peroxides such as 1,2-dioxolanes, 1,2,4-trioxolanes (ozonides), 1,2-dioxanes, 1,2-dioxenes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes. The literature from 2000 onwards is surveyed to provide an update on synthesis of cyclic peroxides. The indicated period of time is, on the whole, characterized by the development of new efficient and scale-up methods for the preparation of these cyclic compounds. It was shown that cyclic peroxides remain unchanged throughout the course of a wide range of fundamental organic reactions. Due to these properties, the molecular structures can be greatly modified to give peroxide ring-retaining products. The chemistry of cyclic peroxides has attracted considerable attention, because these compounds are used in medicine for the design of antimalarial, antihelminthic, and antitumor agents.
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Key Words
- 1,2,4,5-tetraoxanes
- 1,2,4-trioxanes
- 1,2,4-trioxolanes
- 1,2-dioxanes
- 1,2-dioxenes
- 1,2-dioxolanes
- cyclic peroxides
- ozonides
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Affiliation(s)
- Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Dmitry A Borisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valery M Dembitsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
- Institute for Drug Research, P.O. Box 12065, Hebrew University, Jerusalem 91120, Israel
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21
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Hao HD, Wittlin S, Wu Y. Potent Antimalarial 1,2,4-Trioxanes through Perhydrolysis of Epoxides. Chemistry 2013; 19:7605-19. [DOI: 10.1002/chem.201300076] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 02/21/2013] [Indexed: 11/06/2022]
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22
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Sarotti AM. Successful combination of computationally inexpensive GIAO 13C NMR calculations and artificial neural network pattern recognition: a new strategy for simple and rapid detection of structural misassignments. Org Biomol Chem 2013; 11:4847-59. [DOI: 10.1039/c3ob40843d] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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23
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Singh C, Hassam M, Verma VP, Singh AS, Naikade NK, Puri SK, Maulik PR, Kant R. Bile Acid-Based 1,2,4-Trioxanes: Synthesis and Antimalarial Assessment. J Med Chem 2012; 55:10662-73. [DOI: 10.1021/jm301323k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chandan Singh
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
| | - Mohammad Hassam
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
| | - Ved Prakash Verma
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
| | - Ajit Shanker Singh
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
| | - Niraj Krishna Naikade
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
| | - Sunil K. Puri
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
| | - Prakas R. Maulik
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
| | - Ruchir Kant
- Division of Medicinal & Process Chemistry, ‡Division of Parasitology, and §Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226001, India
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24
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Sarotti AM, Pellegrinet SC. Application of the Multi-standard Methodology for Calculating 1H NMR Chemical Shifts. J Org Chem 2012; 77:6059-65. [DOI: 10.1021/jo3008447] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Ariel M. Sarotti
- Instituto de Química Rosario (CONICET), Facultad
de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario
(2000), Argentina
| | - Silvina C. Pellegrinet
- Instituto de Química Rosario (CONICET), Facultad
de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario
(2000), Argentina
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25
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Park CP, Maurya RA, Lee JH, Kim DP. Efficient photosensitized oxygenations in phase contact enhanced microreactors. LAB ON A CHIP 2011; 11:1941-1945. [PMID: 21499614 DOI: 10.1039/c1lc20071b] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A transparent dual-channel microreactor with highly enhanced contact area-to-volume ratio was fabricated for efficient photosensitized oxygenations. The dual-channel microreactor shielded with polyvinylsilazane (PVSZ) consisting of an upper channel for liquid flow and a lower channel for O(2) flow, allows sufficient phase contact along the parallel channels through a gas permeable PDMS membrane for maintaining the O(2) saturated solution. Under full exposure of reactants to light, the reactions in high concentration are completed in minutes rather than hours that it takes to complete in a batch reactor. Moreover, the scale-up process using the microreactor revealed higher productivity than the batch reactor, which would be valuable for the practical applications in a broad range of gas-liquid chemical reactions.
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Affiliation(s)
- Chan Pil Park
- National Creative Research Center of Applied Microfluidic Chemistry, Chungnam National University, Daejeon, South Korea
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26
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Taniguchi T, Zaimoku H, Ishibashi H. A Mild Oxidative Aryl Radical Addition into Alkenes by Aerobic Oxidation of Arylhydrazines. Chemistry 2011; 17:4307-12. [DOI: 10.1002/chem.201003060] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Indexed: 11/07/2022]
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27
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Smith SG, Goodman JM. Assigning stereochemistry to single diastereoisomers by GIAO NMR calculation: the DP4 probability. J Am Chem Soc 2011; 132:12946-59. [PMID: 20795713 DOI: 10.1021/ja105035r] [Citation(s) in RCA: 629] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
GIAO NMR shift calculation has been applied to the challenging task of reliably assigning stereochemistry with quantifiable confidence when only one set of experimental data are available. We have compared several approaches for assigning a probability to each candidate structure and have tested the ability of these methods to distinguish up to 64 possible diastereoisomers of 117 different molecules, using NMR shifts obtained in rapid and computationally inexpensive single-point calculations on molecular mechanics geometries without time-consuming ab initio geometry optimization. We show that a probability analysis based on the errors in each (13)C or (1)H shift is significantly more successful at making correct assignments with high confidence than are probabilities based on the correlation coefficient and mean absolute error parameters. Our new probability measure, which we have termed DP4, complements the probabilities obtained from our previously developed CP3 parameter, which applies to the case of assigning a pair of diastereoisomers when one has both experimental data sets. We illustrate the application of DP4 to assigning the stereochemistry or structure of 21 natural products that were originally misassigned in the literature or that required extensive synthesis of diastereoisomers to establish their stereochemistry.
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Affiliation(s)
- Steven G Smith
- Unilever Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
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28
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Alberti MN, Orfanopoulos M. Unraveling the mechanism of the singlet oxygen ene reaction: recent computational and experimental approaches. Chemistry 2010; 16:9414-21. [PMID: 20623729 DOI: 10.1002/chem.201000752] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The mechanism of the singlet oxygen ene reaction has been a subject of renewed interest within the last few years. The main question being whether this reaction proceeds through a concerted mechanism or if it involves discrete intermediates. In general, the majority of experimental and computational studies support a traditional stepwise mechanism involving a perepoxide-like intermediate. In this minireview we highlight the most prominent and recent theoretical, as well as experimental results relating to the challenging mechanism of the singlet oxygen ene oxyfunctionalization.
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Affiliation(s)
- Mariza N Alberti
- Department of Chemistry, University of Crete, 71003 Voutes Campus, Heraklion, Crete, Greece
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29
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Singh C, Hassam M, Naikade NK, Verma VP, Singh AS, Puri SK. Synthesis and Antimalarial Assessment of a New Series of Orally Active Amino-Functionalized Spiro 1,2,4-Trioxanes. J Med Chem 2010; 53:7587-98. [DOI: 10.1021/jm100678p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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30
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Covalently immobilized porphyrins on silica modified structures as photooxidation catalysts. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcata.2010.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Sarotti AM, Pellegrinet SC. A multi-standard approach for GIAO (13)C NMR calculations. J Org Chem 2009; 74:7254-60. [PMID: 19725561 DOI: 10.1021/jo901234h] [Citation(s) in RCA: 177] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The influence of the reference standard employed in the calculation of (13)C NMR chemical shifts was investigated over a large variety of known organic compounds, using different quantum chemistry methods and basis sets. After detailed analysis of the collected data, we found that methanol and benzene are excellent reference standards for computing NMR shifts of sp(3)- and sp-sp(2)-hybridized carbon atoms, respectively. This multi-standard approach (MSTD) performs better than TMS in terms of accuracy and precision and also displays much lower dependence on the level of theory employed. The use of mPW1PW91/6-31G(d)//mPW1PW91/6-31G(d) level is recommended for accurate (13)C NMR chemical shift prediction at low computational cost.
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Affiliation(s)
- Ariel M Sarotti
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario (2000), Argentina.
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32
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Smith SG, Goodman JM. Assigning the stereochemistry of pairs of diastereoisomers using GIAO NMR shift calculation. J Org Chem 2009; 74:4597-607. [PMID: 19459674 DOI: 10.1021/jo900408d] [Citation(s) in RCA: 208] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
GIAO NMR chemical shifts have been calculated for a set of 28 pairs of diastereoisomers in order to test the ability of NMR shift calculation to distinguish between diastereomeric structures. We compare the performance of several different parameters for quantifying the agreement between calculated and experimental shifts from the point of view of assigning structures and introduce a new parameter, CP3, based on comparing differences in calculated shift with differences in experimental shift, which is significantly more successful at making correct structure assignments with high confidence than are the currently used parameters of the mean absolute error and the correlation coefficient. Using our new parameter in conjunction with Bayes' theorem, stereostructure assignments can be made with quantifiable confidence using shifts obtained in single point calculations on molecular mechanics geometries without computationally expensive ab initio geometry optimization.
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Affiliation(s)
- Steven G Smith
- Unilever Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
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33
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Ramirez AP, Thomas AM, Woerpel KA. Preparation of bicyclic 1,2,4-trioxanes from gamma,delta-unsaturated ketones. Org Lett 2009; 11:507-10. [PMID: 19132925 PMCID: PMC2657341 DOI: 10.1021/ol8022853] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of gamma,delta-unsaturated ketones with hydrogen peroxide and acid provides a rapid entry into the medicinally important 1,2,4-trioxane structure. Alkene substitution that stabilizes carbocationic intermediates proved to be important for the success of this transformation.
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Affiliation(s)
- Armando P. Ramirez
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - Andrew M. Thomas
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - K. A. Woerpel
- Department of Chemistry, University of California, Irvine, California 92697-2025
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34
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Photooxygenation Catalysis with a Polyol-Decorated Disc-Shaped Porphyrin Sensitizer: Shell-Recognition Effects. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800282] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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1,2,5,10,11,14-hexaoxadispiro[5.2.5.2]hexadecanes: novel spirofused bis-trioxane peroxides. Molecules 2008; 13:1743-58. [PMID: 18794783 PMCID: PMC6245278 DOI: 10.3390/molecules13081743] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 08/15/2008] [Accepted: 08/18/2008] [Indexed: 11/17/2022] Open
Abstract
A set of new bis-spirofused 1,2,4-trioxanes 4a-d was obtained from the reaction of cyclohexane-1,4-dione with allylic hydroperoxides 2a-d, bearing an additional hydroxy group in the homoallylic position, by diastereoselective photooxygenation of allylic alcohols 1a-d and subsequent BF3-catalyzed peroxyacetalization with the diketone. From the reaction of a monoprotected cyclohexane-1,4-dione 5 with the allylic hydroperoxide 6 derived from the singlet oxygenation of methyl hydroxytiglate, one monospiro compound was obtained, the 1,2,4-trioxane ketone 7, as well as a mixture of the diastereoisomeric syn- and anti bis-1,2,4-trioxanes 8. The structures of bis-1,2,4-trioxanes were examined theoretically by DFT methods and compared with X-ray structural data in order to evaluate the preferential trioxane ring conformational orientation.
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36
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Alberti MN, Vassilikogiannakis G, Orfanopoulos M. Stereochemistry of the Singlet Oxygenation of Simple Alkenes: A Stereospecific Transformation. Org Lett 2008; 10:3997-4000. [DOI: 10.1021/ol801488w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mariza N. Alberti
- Department of Chemistry, University of Crete, 71003, Voutes-Heraklion, Crete, Greece
| | | | - Michael Orfanopoulos
- Department of Chemistry, University of Crete, 71003, Voutes-Heraklion, Crete, Greece
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