1
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Guo Q, Jiang Y, Zhu R, Yang W, Hu P. Electrochemical Azo-free Mitsunobu-type Reaction. Angew Chem Int Ed Engl 2024; 63:e202402878. [PMID: 38466140 DOI: 10.1002/anie.202402878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 03/12/2024]
Abstract
The classic chemical Mitsunobu reaction suffers from the need of excess alcohol activation reagents and the generation of significant by-products. Efforts to overcome these limitations have resulted in numerous creative solutions, but the substrate scope of these catalytic processes remains limited. Here we report an electrochemical Mitsunobu-type reaction, which features azo-free alcohol activation and broad substrate scope. This user-friendly technology allows a vast collection of heterocycles as the nucleophile, which can couple with a series of chiral cyclic and acyclic alcohols in moderate to high yields and excellent ee's. This practical reaction is scalable, chemoselective, uses simple Electrasyn setup with inexpensive electrodes and requires no precaution to exclude air and moisture. The synthetic utility is further demonstrated on the structural modification of diverse bioactive natural products and pharmaceutical derivatives and its straightforward application in a multiple-step synthesis of a drug candidate.
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Affiliation(s)
- Quanping Guo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Yangye Jiang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Rongjin Zhu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Wenhui Yang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Pengfei Hu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
- Institute of Natural Sciences Westlake Institute for Advanced Study, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
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2
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Omar AM, Abdulmalik O, El-Say KM, Ghatge MS, Cyril-Olutayo M, Paredes S, Al-Awadh M, El-Araby ME, Safo MK. Targeted modification of furan-2-carboxaldehydes into Michael acceptor analogs yielded long-acting hemoglobin modulators with dual antisickling activities. Chem Biol Drug Des 2024; 103:e14371. [PMID: 37798397 DOI: 10.1111/cbdd.14371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/10/2023] [Accepted: 09/26/2023] [Indexed: 10/07/2023]
Abstract
Sickle cell disease (SCD) is the most common genetic disorder, affecting millions of people worldwide. Aromatic aldehydes, which increase the oxygen affinity of human hemoglobin to prevent polymerization of sickle hemoglobin and inhibit red blood cell (RBC) sickling, have been the subject of keen interest for the development of effective treatment against SCD. However, the aldehyde functional group metabolic instability has severly hampered their development, except for voxelotor, which was approved in 2019 for SCD treatment. To improve the metabolic stability of aromatic aldehydes, we designed and synthesized novel molecules by incorporating Michael acceptor reactive centers into the previously clinically studied aromatic aldehyde, 5-hydroxymethylfurfural (5-HMF). Eight such derivatives, referred to as MMA compounds were synthesized and studied for their functional and biological activities. Unlike 5-HMF, which forms Schiff-base interaction with αVal1 nitrogen of hemoglobin, the MMA compounds covalently interacted with βCys93, as evidenced by reverse-phase HPLC and disulfide exchange reaction, explaining their RBC sickling inhibitory activities, which at 2 mM and 5 mM, range from 0% to 21% and 9% to 64%, respectively. Additionally, the MMA compounds showed a second mechanism of sickling inhibition (12%-41% and 13%-62% at 2 mM and 5 mM, respectively) by directly destabilizing the sickle hemoglobin polymer. In vitro studies demonstrated sustained pharmacologic activities of the compounds compared to 5-HMF. These findings hold promise for advancing SCD therapeutics.
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Affiliation(s)
- Abdelsattar M Omar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
- Center for Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Osheiza Abdulmalik
- Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Khalid M El-Say
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohini S Ghatge
- Department of Medicinal Chemistry, School of Pharmacy and Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Mojisola Cyril-Olutayo
- Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Steven Paredes
- Department of Medicinal Chemistry, School of Pharmacy and Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Mohammed Al-Awadh
- Department of Medicinal Chemistry, School of Pharmacy and Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Moustafa E El-Araby
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
- Center for Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Martin K Safo
- Department of Medicinal Chemistry, School of Pharmacy and Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia, USA
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3
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Zhou SM, Wang ZY, Zhu XH, Wu QY, Yang GF. Synthesis and Insecticidal Activity Study of Azidopyridryl Containing Dichlorolpropene Ether Derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18205-18211. [PMID: 37421343 DOI: 10.1021/acs.jafc.3c02251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2023]
Abstract
Pyridalyl, as a novel insecticide with an unknown mode of action, has shown excellent control efficacy against lepidopterous larvae and thrips. Previous modifications of this compound have mostly focused on the pyridine moiety, with limited information available about modifications to other parts of pyridalyl. In this paper, we report the synthesis and insecticidal activity of a series of azidopyridryl-containing dichlorolpropene ether derivatives, based on modifications to the middle alkyl chain of pyridalyl. Screening results for insecticidal activity indicate that our synthesized compounds show moderate to high activities at the tested concentrations against P. xylostella. Particularly, compound III-10 exhibits a LC50 value of 0.831 mg L-1, compared to the LC50 value of pyridalyl at 2.021 mg L-1. Furthermore, compound III-10 also displays a relatively broad insecticidal spectrum against Lepidoptera pests M. separata, C. suppressalis, O. nubilalis, and C. medinalis. Finally, in field trials, III-10 demonstrates better control efficiency against Chilo suppressalis compared to pyridalyl. Overall, our findings suggest that the modification of the middle alkyl chain of pyridalyl may be a promising approach for developing insecticides with improved efficacy.
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Affiliation(s)
- Shao-Meng Zhou
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Zhen-Yu Wang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiao-Hui Zhu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Qiong-You Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Guang-Fu Yang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
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4
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Oh C, Im JH, Bae M, Jung JW. Asymmetric Synthesis of Four Stereoisomers of 2,2-Dimethyl-3-hydroxy-4-(1'-angeloyloxy)-6-acetylchromane from Ageratina grandifolia and Plausible Absolute Stereochemistry of the Natural Product. ACS OMEGA 2023; 8:37384-37390. [PMID: 37841187 PMCID: PMC10569020 DOI: 10.1021/acsomega.3c05349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/08/2023] [Indexed: 10/17/2023]
Abstract
2,2-Dimethyl-3-hydroxy-4-(1'-angeloyloxy)-6-acetylchromane is a natural product isolated from Ageratina grandifolia that exhibits inhibitory activity against yeast α-glucosidase. Initially, its structure was proposed to be 4-hydroxy-3-((S)-1'-angeloyloxy-(R)-2',3'-epoxy-3'-methyl)butylacetophenone with an epoxide, but the structure was later revised to 2,2-dimethyl-3R-hydroxy-4S-(1-angeloyloxy)-6-acetylchromane. In this study, we present a total synthesis of 2,2-dimethyl-3-hydroxy-4-(1'-angeloyloxy)-6-acetylchromane from A. gradifolia and its stereoisomers. The key features of their synthesis include Sharpless asymmetric dihydroxylation of a readily available benzopyran substrate and subsequent Mitsunobu or Steglich reaction to provide both cis- and trans-isomers with chiral control. The absolute stereochemistry of the natural product was determined to be 2,2-dimethyl-3S-hydroxy-4R-(1'-angeloyloxy)-6-acetylchromane based on optical rotations of the synthesized compounds. The absolute configuration of the synthesized stereoisomers was confirmed by Mosher ester analysis. In addition, we provided ECD spectra for the four stereoisomers, which will allow verification of the absolute configuration of the natural product. Synthesis of all four stereoisomers of 2,2-dimethyl-3-hydroxy-4-(1'-angeloyloxy)-6-acetylchromane would facilitate the exploration of their potential biomedical applications.
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Affiliation(s)
- Changmin Oh
- College
of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
- Vessel-Organ
Interaction Research Center, Kyungpook National
University, Daegu 41566, Republic of Korea
| | - Ji Hyeon Im
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Munhyung Bae
- College
of Pharmacy, Gachon University, Incheon 21936, Republic of Korea
| | - Jong-Wha Jung
- College
of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
- Vessel-Organ
Interaction Research Center, Kyungpook National
University, Daegu 41566, Republic of Korea
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5
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Kim B, Puthukanoori RK, Martha B, Reddy Muthyala N, Thota S, Thummala V, Rao Paraselli B, Chen DYK. Stereo-Controlled Synthesis of Vicinal Tertiary Carbinols: Application in the Synthesis of a Diol Substructure of Zaragozic Acid, Pactamycin and Ryanodol. Chemistry 2023; 29:e202301938. [PMID: 37395682 DOI: 10.1002/chem.202301938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/04/2023]
Abstract
A novel and flexible approach for the stereo-controlled synthesis of vicinal tertiary carbinols is reported. The developed strategy featured a highly diastereoselective singlet-oxygen (O2 1 ) [4+2] cycloaddition of rationally designed cyclohexadienones (derived from oxidative dearomatization of the corresponding carboxylic-acid appended phenol precursors), followed by programmed "O-O" and "C-C" bond cleavage. In doing so, a highly functionalized and versatile intermediate was identified and prepared in synthetically useful quantity as a plausible precursor to access a variety of designed and naturally occurring vicinal tertiary carbinol containing compounds. Most notably, the developed strategy was successfully applied in the stereo-controlled synthesis of advanced core structures of zaragozic acid, pactamycin and ryanodol.
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Affiliation(s)
- Byungjoo Kim
- Department of Chemistry, Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | | | | | | | - Srinivas Thota
- Chemveda Life Sciences, Pvt. Ltd., Hyderabad, Telangana, 500039, India
| | | | | | - David Y-K Chen
- Department of Chemistry, Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
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6
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Kim SB, Maiti S, Park ES, Kim GY, Choun Y, Ahn SK, Kim JK, Kim J. One-Pot Synthesis of 1,3,4-Oxadiazines from Acylhydrazides and Allenoates. Molecules 2023; 28:molecules28093815. [PMID: 37175225 PMCID: PMC10180079 DOI: 10.3390/molecules28093815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/19/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
The framework of 1,3,4-oxadiazine is crucial for numerous bioactive molecules, but only a limited number of synthetic methods have been reported for its production. In 2015, Wang's group developed a 4-(dimethylamino)pyridine (DMAP)-catalyzed [2 + 4] cycloaddition of allenoates with N-acyldiazenes, which provided an atom-efficient route for 1,3,4-oxadiazines. However, the practicality of this method was limited by the instability of N-acyldiazenes as starting materials. Building upon our ongoing research about the aerobic oxidation of hydrazides and their synthetic applications, we hypothesized that aerobic oxidative cycloadditions using acylhydrazides instead of N-acyldiazenes may provide a more practical synthetic route for 1,3,4-oxadiazines. In this manuscript, we describe a one-pot synthetic protocol for 1,3,4-oxadiazines from acylhydrazides and allenoates. The developed one-pot protocol consists of aerobic oxidations of acylhydrazides into N-acyldiazenes using NaNO2 and HNO3, followed by the DMAP-catalyzed cycloaddition of allenoate with the generated N-acyldiazenes. A variety of 1,3,4-oxadiazines were produced in good to high yields. In addition, the practicality of the developed method was demonstrated by a gram-scale synthesis of 1,3,4-oxadiazine.
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Affiliation(s)
- Su Been Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Santanu Maiti
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Eun Sun Park
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Ga Young Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Yunji Choun
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Soon Kil Ahn
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Jae Kwang Kim
- Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Jinho Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea
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7
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Sidduri A, Dresel MJ, Knapp S. Incorporation of an Isohexide Subunit Improves the Drug-like Properties of Bioactive Compounds. ACS Med Chem Lett 2023; 14:176-182. [PMID: 36793427 PMCID: PMC9923839 DOI: 10.1021/acsmedchemlett.2c00476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/17/2023] [Indexed: 01/22/2023] Open
Abstract
An enhanced ability to pre-engineer favorable drug-likeness qualities into bioactive molecules would focus and streamline the drug development process. We find that phenols, carboxylic acids, and a purine react with isosorbide ("GRAS" designated) under Mitsunobu coupling conditions to deliver the isoidide conjugates selectively and efficiently. Such conjugates show improved solubility and permeability properties compared with the bare scaffold compounds themselves, and the purine adduct may have applications as a 2'-deoxyadenosine isostere. We anticipate additional benefits, implied by their structures, in metabolic stability and reduced toxicity of the isoidide conjugates as well.
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Affiliation(s)
- Achyutharao Sidduri
- Department
of Chemistry & Chemical Biology, Rutgers
The State University of New Jersey, 321 Bevier Road, Piscataway, New Jersey 08854, United States
- Aunova
Medchem LLC, West Orange, New Jersey 07052, United States
| | - Mark J. Dresel
- Department
of Chemistry & Chemical Biology, Rutgers
The State University of New Jersey, 321 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Spencer Knapp
- Department
of Chemistry & Chemical Biology, Rutgers
The State University of New Jersey, 321 Bevier Road, Piscataway, New Jersey 08854, United States
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8
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D'Errico S, Falanga AP, Greco F, Piccialli G, Oliviero G, Borbone N. State of art in the chemistry of nucleoside-based Pt(II) complexes. Bioorg Chem 2023; 131:106325. [PMID: 36577221 DOI: 10.1016/j.bioorg.2022.106325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/22/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
After the fortuitous discovery of the anticancer properties of cisplatin, many Pt(II) complexes have been synthesized, to obtain less toxic leads which could overcome the resistance phenomena. Given the importance of nucleosides and nucleotides as antimetabolites, studying their coordinating properties towards Pt(II) ions is challenging for bioorganic and medicinal chemistry. This review aims to describe the results achieved so far in the aforementioned field, paying particular attention to the synthetic aspects, the chemical-physical characterization, and the biological activities of the nucleoside-based Pt(II) complexes.
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Affiliation(s)
- Stefano D'Errico
- Department of Pharmacy, University of Naples Federico II, via Domenico Montesano, 49, 80131 Naples, Italy.
| | - Andrea Patrizia Falanga
- Department of Pharmacy, University of Naples Federico II, via Domenico Montesano, 49, 80131 Naples, Italy.
| | - Francesca Greco
- Department of Pharmacy, University of Naples Federico II, via Domenico Montesano, 49, 80131 Naples, Italy.
| | - Gennaro Piccialli
- Department of Pharmacy, University of Naples Federico II, via Domenico Montesano, 49, 80131 Naples, Italy.
| | - Giorgia Oliviero
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, via Sergio Pansini, 5, 80131 Naples, Italy.
| | - Nicola Borbone
- Department of Pharmacy, University of Naples Federico II, via Domenico Montesano, 49, 80131 Naples, Italy.
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9
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Chen T, Mei Y, Liu LL, Zhao Y, Wu Y, Stephan DW. Alkoxyphosphorane/Borane Cooperative Alkylations: A Frustrated Lewis Pair Version of the Mitsunobu Reaction. Chemistry 2023; 29:e202300264. [PMID: 36715454 DOI: 10.1002/chem.202300264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 01/31/2023]
Abstract
The combination of the alkoxyphosphoranes, Ph2 P(OR)(O2 C6 Cl4 ) and the borane B(C6 F5 )3 generates the zwitterions 3 which act as FLP to effect the alkylation of several nucleophiles affording C-C, C-N, C-H and C-Cl coupling products. A DFT study shows the reaction proceeds via an FLP activation pathway generating an alkoxyphosphonium intermediate which effects the alkylation of the nucleophiles, akin to the Mitsunobu reaction.
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Affiliation(s)
- Ting Chen
- Institute of Drug Discovery Technology, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Yanbo Mei
- Department of Chemistry and, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 518055, Shenzhen, P. R. China
| | - Liu Leo Liu
- Department of Chemistry and, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 518055, Shenzhen, P. R. China
| | - Yufen Zhao
- Institute of Drug Discovery Technology, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Yile Wu
- Institute of Drug Discovery Technology, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China
| | - Douglas W Stephan
- Institute of Drug Discovery Technology, Ningbo University, 315211, Ningbo, Zhejiang, P. R. China.,Department of Chemistry, University of Toronto, 80 St. George St, M5S3H6, Toronto, ON, Canada
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10
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Late stage modifications of phosphine oxide ligands by iron‐catalyzed hydrogen borrowing reactions. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Munawar S, Zahoor AF, Ali S, Javed S, Irfan M, Irfan A, Kotwica-Mojzych K, Mojzych M. Mitsunobu Reaction: A Powerful Tool for the Synthesis of Natural Products: A Review. Molecules 2022; 27:6953. [PMID: 36296545 PMCID: PMC9609662 DOI: 10.3390/molecules27206953] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 08/13/2023] Open
Abstract
The Mitsunobu reaction plays a vital part in organic chemistry due to its wide synthetic applications. It is considered as a significant reaction for the interconversion of one functional group (alcohol) to another (ester) in the presence of oxidizing agents (azodicarboxylates) and reducing agents (phosphines). It is a renowned stereoselective reaction which inverts the stereochemical configuration of end products. One of the most important applications of the Mitsunobu reaction is its role in the synthesis of natural products. This review article will focus on the contribution of the Mitsunobu reaction towards the total synthesis of natural products, highlighting their biological potential during recent years.
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Affiliation(s)
- Saba Munawar
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Shafaqat Ali
- College of Agriculture and Environmental Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Sadia Javed
- Department of Biochemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Irfan
- Department of Pharmaceutics, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Ali Irfan
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Katarzyna Kotwica-Mojzych
- Laboratory of Experimental Cytology, Medical University of Lublin, Radziwiłłowska 11, 20-080 Lublin, Poland
| | - Mariusz Mojzych
- Department of Chemistry, Siedlce University of Natural Sciences and Humanities, 3-go Maja 54, 08-110 Siedlce, Poland
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12
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Lin YC, Schneider F, Eberle KJ, Chiodi D, Nakamura H, Reisberg SH, Chen J, Saito M, Baran PS. Atroposelective Total Synthesis of Darobactin A. J Am Chem Soc 2022; 144:14458-14462. [PMID: 35926121 PMCID: PMC9829381 DOI: 10.1021/jacs.2c05892] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A concise, modular synthesis of the novel antibiotic darobactin A is disclosed. The synthesis successfully forges the hallmark strained macrocyclic ring systems in a sequential fashion. Key transformations include two atroposelective Larock-based macrocyclizations, one of which proceeds with exquisite regioselectivity despite bearing an unprotected alkyne. The synthesis is designed with medicinal chemistry considerations in mind, appending key portions of the molecule at a late stage. Requisite unnatural amino acid building blocks are easily prepared in an enantiopure form using C-H activation and decarboxylative cross-coupling tactics.
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Affiliation(s)
- You-Chen Lin
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Fabian Schneider
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Kelly J Eberle
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Debora Chiodi
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Hugh Nakamura
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Solomon H Reisberg
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jason Chen
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Masato Saito
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Phil S Baran
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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13
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Unsworth WP, Stephens TC. Strategies for the Synthesis of Heterocyclic Macrocycles and Medium‐Sized Rings. HETEROCYCLES 2022. [DOI: 10.1002/9783527832002.ch3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Late‐Stage Dehydroxyazidation of Alcohols Promoted by Trifunctional Hypervalent Azido‐Iodine(III) Reagents. Chemistry 2022; 28:e202200272. [DOI: 10.1002/chem.202200272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Indexed: 11/10/2022]
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15
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Lin CK, Lee W, Wu CF, Shih FY. Recyclable and reusable ionic liquid-supported azo precursors in Mitsunobu reactions. Org Biomol Chem 2022; 20:2217-2221. [PMID: 35230380 DOI: 10.1039/d2ob00039c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of azo precursor, ionic liquid-supported hydrazidecarboxylate, was synthesized and applied in Mitsunobu reactions. The developed reagent is recyclable during the reaction and reusable after recovery by the ionic liquids. The ionic liquid-based azo precursor in conjugation with PhI(OAc)2 has been proved to be useful in the formation of carbon-oxygen, carbon-nitrogen, and carbon-sulfur bonds.
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Affiliation(s)
- Cheng-Kun Lin
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Wei Lee
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Chun-Fu Wu
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
| | - Fang-Yi Shih
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
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16
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Wang J, Ma Z, Du W, Shao L. Hydrogen peroxide based oxidation of hydrazines using HBr catalyst. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Dombrowski AW, Aguirre AL, Shrestha A, Sarris KA, Wang Y. The Chosen Few: Parallel Library Reaction Methodologies for Drug Discovery. J Org Chem 2021; 87:1880-1897. [PMID: 34780177 DOI: 10.1021/acs.joc.1c01427] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Parallel library synthesis is an important tool for drug discovery because it enables the synthesis of closely related analogues in parallel via robust and general synthetic transformations. In this perspective, we analyzed the synthetic methodologies used in >5000 parallel libraries representing 15 prevalent synthetic transformations. The library data set contains complex substrates and diverse arrays of building blocks used over the last 14 years at AbbVie. The library synthetic methodologies that have demonstrated robustness and generality with proven success are described along with their substrate scopes. The evolution of the synthetic methodologies for library synthesis over the past decade is discussed. We also highlight that the combination of parallel library synthesis with high-throughput experimentation will continue to facilitate the discovery of library-amenable synthetic methodologies in drug discovery.
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Affiliation(s)
- Amanda W Dombrowski
- Advanced Chemistry Technologies Group, AbbVie, Inc., North Chicago, Illinois 60064, United States
| | - Ana L Aguirre
- Advanced Chemistry Technologies Group, AbbVie, Inc., North Chicago, Illinois 60064, United States
| | - Anurupa Shrestha
- Advanced Chemistry Technologies Group, AbbVie, Inc., North Chicago, Illinois 60064, United States
| | - Kathy A Sarris
- Advanced Chemistry Technologies Group, AbbVie, Inc., North Chicago, Illinois 60064, United States
| | - Ying Wang
- Advanced Chemistry Technologies Group, AbbVie, Inc., North Chicago, Illinois 60064, United States
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18
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Chemoenzymatic Stereoselective Synthesis of trans-Flavan-4-ols via Lipase-Catalyzed Kinetic Resolutions. Catalysts 2021. [DOI: 10.3390/catal11111296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Flavan-4-ols are a subclass of flavonoids that are present in complex molecules with application in the industrial sector as pigments, antioxidants, or antimitotics, among many others. The most traditional way to achieve their synthesis is from naturally abundant flavanones, asymmetric transfer hydrogenation reactions or bioreduction being well known strategies, while their preparation from racemic flavan-4-ols has been less explored. In this article, we have focused on the synthesis of a series of trans-flavan-4-ols bearing different substitution patterns in the aromatic ring to explore later the potential of lipases as biocatalysts for stereoselective acylation reactions. Therefore, a series of flavanones have been chemically prepared, starting from the corresponding benzaldehydes by aldol condensation with 2′-hydroxyacetophenone in a strongly basic medium, and later transformed into the corresponding racemic trans-flavan-4-ols following a carbonyl reduction, Mitsunobu reaction, and ester deprotection sequence. A screening of lipases and optimization of the reaction conditions for the stereoselective acylation of racemic 2-phenylchroman-4-ol were performed before expanding the best reaction conditions to the kinetic resolution of other 2-arylchroman-4-ols. Interestingly, the combination of AK lipase from Pseudomonas fluorescens as enzyme and vinyl acetate as both acyl donor and solvent allowed the performance of highly asymmetric transformations (E > 200, 50–99% eeS and >99% eeP) under mild reaction conditions (30 °C and 250 rpm).
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19
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Dobie C, Montgomery AP, Szabo R, Yu H, Skropeta D. Synthesis and biological evaluation of selective phosphonate-bearing 1,2,3-triazole-linked sialyltransferase inhibitors. RSC Med Chem 2021; 12:1680-1689. [PMID: 34778769 DOI: 10.1039/d1md00079a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 06/19/2021] [Indexed: 01/01/2023] Open
Abstract
The critical role of sialyltransferase (ST) enzymes in tumour cell growth and metastasis, as well as links to multi-drug and radiation resistance, has seen STs emerge as a target for potential antimetastatic cancer treatments. One promising class of ST inhibitors that improve upon the pharmacokinetic issues of previous inhibitors is the 1,2,3-triazole-linked transition-state analogues. Herein, we present the design and synthesis of a new generation of 1,2,3-triazole-linked sialyltransferase inhibitors, along with their biological evaluation demonstrating increased potency for phosphonate bearing compounds. The six most promising inhibitors presented in this work exhibited a greater number of binding modes for hST6Gal I over hST3Gal I, with K i ranging from 3-55 μM. This work highlights phosphonate bearing triazole-linked compounds as a promising class of synthetically accessible ST inhibitors that warrant further investigation.
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Affiliation(s)
- Christopher Dobie
- Molecular Horizons and School of Chemistry & Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong NSW 2522 Australia
| | - Andrew P Montgomery
- Molecular Horizons and School of Chemistry & Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong NSW 2522 Australia
| | - Rémi Szabo
- Molecular Horizons and School of Chemistry & Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong NSW 2522 Australia
| | - Haibo Yu
- Molecular Horizons and School of Chemistry & Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong NSW 2522 Australia .,Illawarra Health and Medical Research Institute Wollongong NSW 2522 Australia
| | - Danielle Skropeta
- Molecular Horizons and School of Chemistry & Molecular Bioscience, Faculty of Science, Medicine and Health, University of Wollongong NSW 2522 Australia .,Illawarra Health and Medical Research Institute Wollongong NSW 2522 Australia
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20
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Li G, Miller SP, Radosevich AT. P III/P V═O-Catalyzed Intermolecular N-N Bond Formation: Cross-Selective Reductive Coupling of Nitroarenes and Anilines. J Am Chem Soc 2021; 143:14464-14469. [PMID: 34473484 DOI: 10.1021/jacs.1c07272] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An organophosphorus-catalyzed method for the synthesis of unsymmetrical hydrazines by cross-selective intermolecular N-N reductive coupling is reported. This method employs a small ring phosphacycle (phosphetane) catalyst together with hydrosilane as the terminal reductant to drive reductive coupling of nitroarenes and anilines with good chemoselectivity and functional group tolerance. Mechanistic investigations support an autotandem catalytic reaction cascade in which the organophosphorus catalyst drives two sequential and mechanistically distinct reduction events via PIII/PV═O cycling in order to furnish the target N-N bond.
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Affiliation(s)
- Gen Li
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Steven P Miller
- Department of Process Research and Development, Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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21
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Kharrngi B, Basumatary G, Bez G. Iodine catalysed synthesis of unsymmetrical benzylic ethers by direct cross-coupling of alcohols. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Nishimura K, Hanzawa R, Sugai T, Fuwa H. Ruthenium-Catalyzed Intramolecular Double Hydrofunctionalization of Alkynes. Synthesis of Spirocyclic Hemiaminal Ethers and Their Lewis Acid-Mediated Cleavage/Nucleophilic Addition. J Org Chem 2021; 86:6674-6697. [PMID: 33861607 DOI: 10.1021/acs.joc.1c00443] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[RuCl2(p-cymene)]2/AgNO3-catalyzed intramolecular double hydrofunctionalization of internal alkynes having nitrogen and oxygen nucleophilic groups at appropriate positions provided a series of spirocyclic hemiaminal ether derivatives in good to excellent yields. The product spiro-hemiaminal ethers underwent Lewis acid-mediated chemoselective cleavage, and in situ-generated iminium/oxocarbenium ions could be trapped with nucleophiles to afford a range of nitrogen and oxygen heterocycles.
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Affiliation(s)
- Kazuma Nishimura
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Ryohei Hanzawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Tomoya Sugai
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Haruhiko Fuwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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23
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Malamas MS, Pavlopoulos S, Alapafuja SO, Farah SI, Zvonok A, Mohammad KA, West J, Perry NT, Pelekoudas DN, Rajarshi G, Shields C, Chandrashekhar H, Wood J, Makriyannis A. Design and Structure-Activity Relationships of Isothiocyanates as Potent and Selective N-Acylethanolamine-Hydrolyzing Acid Amidase Inhibitors. J Med Chem 2021; 64:5956-5972. [PMID: 33900772 DOI: 10.1021/acs.jmedchem.1c00076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
N-Acylethanolamines are signaling lipid molecules implicated in pathophysiological conditions associated with inflammation and pain. N-Acylethanolamine acid amidase (NAAA) favorably hydrolyzes lipid palmitoylethanolamide, which plays a key role in the regulation of inflammatory and pain processes. The synthesis and structure-activity relationship studies encompassing the isothiocyanate pharmacophore have produced potent low nanomolar inhibitors for hNAAA, while exhibiting high selectivity (>100-fold) against other serine hydrolases and cysteine peptidases. We have followed a target-based structure-activity relationship approach, supported by computational methods and known cocrystals of hNAAA. We have identified systemically active inhibitors with good plasma stability (t1/2 > 2 h) and microsomal stability (t1/2 ∼ 15-30 min) as pharmacological tools to investigate the role of NAAA in inflammation, pain, and drug addiction.
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Affiliation(s)
| | - Spiro Pavlopoulos
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Shakiru O Alapafuja
- MAK Scientific LLC, 151 South Bedford Street, Burlington, Massachusetts 01803, United States
| | - Shrouq I Farah
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Alexander Zvonok
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Khadijah A Mohammad
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Jay West
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Nicholas Thomas Perry
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Dimitrios N Pelekoudas
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Girija Rajarshi
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Christina Shields
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Honrao Chandrashekhar
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Jodi Wood
- Center for Drug Discovery, Northeastern University, Boston, Massachusetts 02115, United States
| | - Alexandros Makriyannis
- Center for Drug Discovery and Departments of Chemistry and Chemical Biology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, United States
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24
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Ohta M, Kato S, Sugai T, Fuwa H. Cobalt-Catalyzed Hartung-Mukaiyama Cyclization of γ-Hydroxy Olefins: Stereocontrolled Synthesis of the Tetrahydrofuran Moiety of Amphidinolide N. J Org Chem 2021; 86:5584-5615. [PMID: 33769047 DOI: 10.1021/acs.joc.1c00085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Cobalt-catalyzed Mukaiyama-type cyclization of γ-hydroxy olefins is known as an atom- and step-economical means for stereoselective synthesis of 2,5-trans-substituted tetrahydrofuran derivatives. In this study, we investigated the synthesis of a series of 2,5-substituted tetrahydrofuran derivatives by means of a cobalt-catalyzed Hartung-Mukaiyama cyclization. The stereochemical consequence of the reaction was found to be largely dependent on the substitution pattern and relative configuration of γ-hydroxy olefins. 2,5-cis-Substituted tetrahydrofuran derivatives could be obtained diastereoselectively from appropriately substituted γ-hydroxy olefins. Additionally, relatively bulky olefin substituents and unprotected hydroxy groups at non-interfering positions (e.g., α and δ) were well tolerated in the reaction. Finally, the synthetic versatility of the Hartung-Mukaiyama cyclization was demonstrated through a stereocontrolled synthesis of the tetrahydrofuran moiety of amphidinolide N, a potent cytotoxic macrolide of marine origin. This study expands the capacity of Mukaiyama-type cyclization in that it can be used in convergent assembly of complex tetrahydrofuran motifs from internal olefins.
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Affiliation(s)
- Masaki Ohta
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Shota Kato
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Tomoya Sugai
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Haruhiko Fuwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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25
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Cao J, Lv D, Yu F, Chiou MF, Li Y, Bao H. Regioselective Three-Component Synthesis of Vicinal Diamines via 1,2-Diamination of Styrenes. Org Lett 2021; 23:3184-3189. [PMID: 33792337 DOI: 10.1021/acs.orglett.1c00898] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The vicinal diamine motif plays a significant role in natural products, drug design, and organic synthesis, and development of synthetic methods for the synthesis of diamines is a long-standing interest. Herein, we report a regioselective intermolecular three-component vicinal diamination of styrenes with acetonitrile and azodicarboxylates. The diamination products can be produced in moderate to excellent yields via the Ritter reaction. Synthetic applications and theoretical studies of this reaction have been conducted.
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Affiliation(s)
- Jie Cao
- College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou, Fujian 350108, P. R. China.,Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
| | - Daqi Lv
- College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou, Fujian 350108, P. R. China.,Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
| | - Fei Yu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
| | - Mong-Feng Chiou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
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26
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Kuzu B, Sari O, Erdem SS, Algul O, Menges N. Synthesis of Benzoxazole‐2‐carboxylate Derivatives: Electronic‐ and Position‐effect of Functional Groups and Computational Modeling of the Selectivity for Oxazole Ring. ChemistrySelect 2021. [DOI: 10.1002/slct.202100174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Burak Kuzu
- Department of Pharmaceutical Chemistry Mersin University Mersin Turkey
- Department of Pharmaceutical Chemistry Van Yüzüncü Yil University 65080 Van Turkey
| | - Ozlem Sari
- Department of Chemistry Faculty of Arts and Sciences Kırşehir Ahi Evran University 40100 Kırşehir Turkey
| | - Safiye Sag Erdem
- Department of Chemistry Faculty of Arts and Sciences Marmara University Goztepe Campus 34722 Istanbul Turkey
| | - Oztekin Algul
- Department of Pharmaceutical Chemistry Mersin University Mersin Turkey
| | - Nurettin Menges
- Department of Pharmaceutical Chemistry Van Yüzüncü Yil University 65080 Van Turkey
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27
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Fuwa H. Structure determination, correction, and disproof of marine macrolide natural products by chemical synthesis. Org Chem Front 2021. [DOI: 10.1039/d1qo00481f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Integration of chemical synthesis, NMR spectroscopy, and various analytical means is key to success in the structure elucidation of stereochemically complex marine macrolide natural products.
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Affiliation(s)
- Haruhiko Fuwa
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
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28
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Biomimetic hydrogel by enzymatic crosslinking of pullulan grafted with ferulic acid. Carbohydr Polym 2020; 250:116967. [DOI: 10.1016/j.carbpol.2020.116967] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/15/2020] [Accepted: 08/15/2020] [Indexed: 12/18/2022]
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29
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Zhang JQ, Ikawa E, Fujino H, Naganawa Y, Nakajima Y, Han LB. Selective C-P(O) Bond Cleavage of Organophosphine Oxides by Sodium. J Org Chem 2020; 85:14166-14173. [PMID: 33118346 DOI: 10.1021/acs.joc.0c01642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Sodium exhibits better efficacy and selectivity than Li and K for converting Ph3P(O) to Ph2P(OM). The destiny of PhNa co-generated is disclosed. A series of alkyl halides R4X and aryl halides ArX all react with Ph2P(ONa) to produce the corresponding phosphine oxides in good to excellent yields.
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Affiliation(s)
- Jian-Qiu Zhang
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan.,Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Eiichi Ikawa
- Katayama Chemical Industries Co., Ltd., 26-22, 3-Chome, Higasinaniwa-cho, Amagasaki, Hyogo 660-0892, Japan
| | - Hiroyoshi Fujino
- Katayama Chemical Industries Co., Ltd., 26-22, 3-Chome, Higasinaniwa-cho, Amagasaki, Hyogo 660-0892, Japan
| | - Yuki Naganawa
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Yumiko Nakajima
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Li-Biao Han
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan.,Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
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30
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Zou Y, Wong JJ, Houk KN. Computational Exploration of a Redox-Neutral Organocatalytic Mitsunobu Reaction. J Am Chem Soc 2020; 142:16403-16408. [DOI: 10.1021/jacs.0c07487] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yike Zou
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Jonathan J. Wong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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31
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Molybdenum (VI)-catalyzed dehydrative construction of C O and C S bonds formation via etherification and thioetherification of alcohols and thiols. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Beddoe RH, Edwards DC, Goodman L, Sneddon HF, Denton RM. Synthesis of 18O-labelled alcohols from unlabelled alcohols. Chem Commun (Camb) 2020; 56:6480-6483. [PMID: 32453324 DOI: 10.1039/d0cc02855j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The synthesis of primary, secondary and tertiary 18O-enriched alcohols from readily available 16O-alcohols via a Mitsunobu esterification and hydrolysis is described. The method is further exemplified in the labelling of the active pharmaceutical ingredient, dropropizine and is shown to be tolerant of modern, separation friendly Mitsunobu reagents.
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Affiliation(s)
- Rhydian H Beddoe
- School of Chemistry, University of Nottingham, GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, 6 Triumph Road, Nottingham, NG7 2GA, UK.
| | - Daniel C Edwards
- School of Chemistry, University of Nottingham, GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, 6 Triumph Road, Nottingham, NG7 2GA, UK.
| | - Louis Goodman
- School of Chemistry, University of Nottingham, GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, 6 Triumph Road, Nottingham, NG7 2GA, UK.
| | - Helen F Sneddon
- Green Chemistry, GlaxoSmithKline, Medicines Research Centre, Stevenage, Hertfordshire SG1 2NY, UK
| | - Ross M Denton
- School of Chemistry, University of Nottingham, GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, 6 Triumph Road, Nottingham, NG7 2GA, UK.
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33
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Affiliation(s)
- Romain Morodo
- Center for Integrated Technology and Organic Synthesis MolSys Research Unit University of Liège B‐4000 Liège (Sart Tilman) Belgium
| | - Pauline Bianchi
- Center for Integrated Technology and Organic Synthesis MolSys Research Unit University of Liège B‐4000 Liège (Sart Tilman) Belgium
| | - Jean‐Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis MolSys Research Unit University of Liège B‐4000 Liège (Sart Tilman) Belgium
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34
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Pattarawarapan M, Wiriya N, Yimklan S, Wangngae S, Phakhodee W. Zwitterionic Ring-Opened Oxyphosphonium Species from the Ph 3P-I 2 Mediated Reactions of Benzo[ d]oxazol-2(3 H)-ones with Secondary Amines. J Org Chem 2020; 85:6151-6158. [PMID: 32242407 DOI: 10.1021/acs.joc.0c00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Instead of the expected substituted 2-aminobenzo[d]oxazoles, relatively stable ring-opened oxyphosphonium betaines were isolated for the first time from the Ph3P-I2-mediated reactions of benzo[d]oxazol-2(3H)-ones with acyclic secondary amines. The structure of one of these compounds was unambiguously confirmed by single-crystal X-ray analysis. Thermolysis of the betaines gave rise to 2-dialkylaminobenzoxazoles with concomitant loss of triphenylphosphine oxide, suggesting their possible role as intermediates in an alternative reaction path.
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Affiliation(s)
- Mookda Pattarawarapan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nittaya Wiriya
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Saranphong Yimklan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sirilak Wangngae
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wong Phakhodee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
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35
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Jo G, Kim MH, Kim J. A practical route to azo compounds by metal-free aerobic oxidation of arylhydrazides using an NO x system. Org Chem Front 2020. [DOI: 10.1039/d0qo00043d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Metal-free aerobic oxidation of aryl hydrazides catalyzed by NOx was developed for the practical and environment friendly synthesis of azo compounds.
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Affiliation(s)
- Giwon Jo
- Department of Chemistry
- and Research Institute of Basic Sciences
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - Min Hye Kim
- Department of Chemistry
- and Research Institute of Basic Sciences
- Incheon National University
- Incheon 22012
- Republic of Korea
| | - Jinho Kim
- Department of Chemistry
- and Research Institute of Basic Sciences
- Incheon National University
- Incheon 22012
- Republic of Korea
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36
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Li BL, Wang JK, Gao JS, Yu YH, Ma DS. A semi-rigid tricarboxylate ligand based Co( ii) coordination polymer: construction and applications in multiple sensing. NEW J CHEM 2020. [DOI: 10.1039/c9nj05766h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A cobalt coordination polymer was prepared, which expresses multiple fluorescence responses to transition metal ions, antibiotics, pesticides and nitrobenzene.
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Affiliation(s)
- Bai-Ling Li
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Jun-Ku Wang
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Jin-Sheng Gao
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Agricultural College
| | - Ying-Hui Yu
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Dong-Sheng Ma
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
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37
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Zhou YG, Wong HNC, Peng XS. Total Syntheses of (-)-Deoxoapodine, (-)-Kopsifoline D, and (-)-Beninine. J Org Chem 2019; 85:967-976. [PMID: 31830791 DOI: 10.1021/acs.joc.9b02918] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The total syntheses of Aspidosperma and Kopsia alkaloids (-)-deoxoapodine, (-)-kopsifoline D, and (-)-beninine are described through a domino deprotection-Michael addition-nucleophilic substitution protocol to assemble the core framework in efficient steps. Corey-Bakshi-Shibata reduction was employed to afford the enantioenriched intermediate for the total syntheses of the aforementioned alkaloids. The chirality was shown to completely transfer to the backbone using Johnson-Claisen rearrangement. The enantioselective total syntheses of (-)-kopsifoline D and (-)-beninine were accomplished for the first time. Our strategy opens up practical avenues for the total synthesis of structurally similar alkaloids.
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Affiliation(s)
- Yi-Guo Zhou
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin 100051 , New Territories , Hong Kong SAR, China
| | - Henry N C Wong
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin 100051 , New Territories , Hong Kong SAR, China.,School of Science and Engineering , The Chinese University of Hong Kong (Shenzhen) , Shenzhen 518172 , China.,Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules, Shenzhen Research Institute , The Chinese University of Hong Kong , Shenzhen 518507 , China
| | - Xiao-Shui Peng
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin 100051 , New Territories , Hong Kong SAR, China.,School of Science and Engineering , The Chinese University of Hong Kong (Shenzhen) , Shenzhen 518172 , China.,Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules, Shenzhen Research Institute , The Chinese University of Hong Kong , Shenzhen 518507 , China
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38
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Huy PH. Lewis Base Catalysis Promoted Nucleophilic Substitutions – Recent Advances and Future Directions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901495] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Peter H. Huy
- Institute for Organic Chemistry Saarland University P. O. Box 151150 66041 Saarbruecken Germany
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39
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Behrouz S, Soltani Rad MN, Ahmadi S. Triphenylphosphine-free approach for one-pot N-alkylation of purine, pyrimidine, and azole derivatives with alcohols using P2O5/KI: A facile and selective route to access carboacyclic nucleosides. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Iškauskienė M, Ragaitė G, Sløk FA, Šačkus A. Facile synthesis of novel amino acid-like building blocks by N-alkylation of heterocyclic carboxylates with N-Boc-3-iodoazetidine. Mol Divers 2019; 24:1235-1251. [PMID: 31420788 DOI: 10.1007/s11030-019-09987-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 08/08/2019] [Indexed: 01/11/2023]
Abstract
An efficient protocol providing easy access to highly functionalized heterocyclic compounds as novel organic building blocks was developed by coupling alkyl pyrazole-, indazole- and indolecarboxylates with N-Boc-3-iodoazetidine. The synthesized compounds are representatives of constrained non-chiral synthetic azole carboxylates in their N-Boc protected ester forms. Diversification of the prepared heterocyclic building blocks was achieved via application of palladium-catalyzed Suzuki-Miyaura cross-coupling reactions. In total, 34 building blocks were obtained to form a highly diversified small molecule collection. The structure of the novel heterocyclic compounds was investigated and verified by advanced NMR spectroscopy methods.
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Affiliation(s)
- Monika Iškauskienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, 50254, Kaunas, Lithuania. .,Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, 51423, Kaunas, Lithuania.
| | - Greta Ragaitė
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, 51423, Kaunas, Lithuania
| | - Frank A Sløk
- Vipergen ApS, Gammel Kongevej 23A, 1610, Copenhagen V, Denmark
| | - Algirdas Šačkus
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, 50254, Kaunas, Lithuania.,Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, 51423, Kaunas, Lithuania
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41
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Böldl M, Fleischer I. Dehydrative Coupling of Benzylic Alcohols Catalyzed by Brønsted Acid/Lewis Base. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900965] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marlene Böldl
- Institute of Organic Chemistry. Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Ivana Fleischer
- Institute of Organic Chemistry. Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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42
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Taniguchi T. Development of Mitsunobu Reagents Recyclable by Aerobic Oxidation and the Application to Catalytic Mitsunobu Reactions. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tsuyoshi Taniguchi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
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43
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Szlenkier M, Boryski J. Application of Sugar-Base Anhydro Bridge for Modification of Nucleosides in the 2’- and/or 3’-Positions - Revisited. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190306155919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The nucleosides modified in the 2’- and/or 3’-position have been known for
years and include important, bioactive compounds such as zidovudine, cytarabine, didanosine,
puromycin, and fludarabine. This group consists of analogs with altered configuration,
2’,3’-dideoxy and 2’,3’-dideoxy-didehydro nucleosides, as well as derivatives with
additional substituents. These compounds are often targeted against viruses and tumors.
The sugar-base anhydro nucleosides have been known since the middle of the 20th century.
However, their application has not yet been fully explored and described. The number
of 2’,3’-dimodified derivatives, obtainable through sugar-base anhydrocyclic synthons,
could be vast, especially taking into consideration various combinations of S-alkyl,
S-aryl, O-alkyl, O-aryl, halogen, triazole, amine and azide substituents in both pyrimidine
and purine nucleosides. Furthermore, application of anhydrocyclic structures can be an efficient method of introducing
isotope labeled groups. The aim of this article is to provide an overview of the known methods of
functionalization of the 2’- and/or 3’-position of nucleosides, using anhydrocyclic structures, and also to present
a future outlook for this subject.
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Affiliation(s)
- Maurycy Szlenkier
- Department of Nucleoside and Nucleotide Chemistry, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego str. 12/14, 61-704 Poznan, Poland
| | - Jerzy Boryski
- Department of Nucleoside and Nucleotide Chemistry, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego str. 12/14, 61-704 Poznan, Poland
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44
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Pickel TC, Akondi SM, Liebeskind LS. Esterification by Redox Dehydration Using Diselenides as Catalytic Organooxidants. J Org Chem 2019; 84:4954-4960. [PMID: 30742771 DOI: 10.1021/acs.joc.8b02765] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ortho-functionalized aryl diselenides are catalytic (5.0 mol %) oxidants for the construction of esters from carboxylic acids and alcohols in the presence of stoichiometric triethyl phosphite and dioxygen in air as the terminal redox reagents (redox dehydration conditions). The reaction proceeds through the intermediacy of the anhydride and requires the presence of 10% DMAP to drive the esterification.
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Affiliation(s)
- Thomas C Pickel
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Srirama Murthy Akondi
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Lanny S Liebeskind
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
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45
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Pokluda A, Kohout M, Chudoba J, Krupička M, Cibulka R. Nitrosobenzene: Reagent for the Mitsunobu Esterification Reaction. ACS OMEGA 2019; 4:5012-5018. [PMID: 31459682 PMCID: PMC6648318 DOI: 10.1021/acsomega.8b03551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 02/22/2019] [Indexed: 05/24/2023]
Abstract
Nitrosobenzene has been demonstrated to participate in the Mitsunobu reaction in an analogous manner to dialkyl azodicarboxylates. The protocol using nitrosobenzene and triphenylphosphine (1:1) under mild conditions (0 °C) provides the ester derivatives of aliphatic and aromatic acids using various alcohols in moderate yield and with good enantioselectivity, giving the desired products predominantly with an inversion of configuration. The proposed mechanism, which is analogous to that observed using dialkyl azodicarboxylates, involves a nitrosobenzene-triphenylphosphine adduct and an alkoxytriphenylphosphonium ion and was supported by density functional theory calculations, 31P NMR spectroscopy, and experiments conducted with isotopically labeled substrates.
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Affiliation(s)
- Adam Pokluda
- Department
of Organic Chemistry and Central Laboratories, University
of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Michal Kohout
- Department
of Organic Chemistry and Central Laboratories, University
of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Josef Chudoba
- Department
of Organic Chemistry and Central Laboratories, University
of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Martin Krupička
- Department
of Organic Chemistry and Central Laboratories, University
of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Radek Cibulka
- Department
of Organic Chemistry and Central Laboratories, University
of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic
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46
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Beddoe RH, Sneddon HF, Denton RM. The catalytic Mitsunobu reaction: a critical analysis of the current state-of-the-art. Org Biomol Chem 2019; 16:7774-7781. [PMID: 30306184 DOI: 10.1039/c8ob01929k] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The Mitsunobu reaction is widely regarded as the pre-eminent method for performing nucleophilic substitutions of alcohols with inversion of configuration. However, its applicability to large-scale synthesis is undermined by the fact that alcohol activation occurs at the expense of two stoichiometric reagents - a phosphine and an azodicarboxylate. The ideal Mitsunobu reaction would be sub-stoichiometric in the phosphine and azodicarboxylate species and employ innocuous terminal oxidants and reductants to achieve recycling. This Review article provides a summary and analysis of recent advances towards the development of such catalytic Mitsunobu reactions.
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Affiliation(s)
- Rhydian H Beddoe
- School of Chemistry, University of Nottingham; GlaxoSmithKline Carbon Neutral Laboratory, 6 Triumph Road, Nottingham, NG7 2GA, UK.
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47
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Panday SK. Advances in the Mitsunobu Reaction: An Excellent Organic Protocol with Versatile Applications. MINI-REV ORG CHEM 2019. [DOI: 10.2174/1570193x15666180612090313] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The beginning of 1970’s may well be regarded as turning point in the area of organic synthesis
when an efficient and straight forward strategy for the reaction of primary and/or secondary alcohols
with variety of nucleophiles in the presence of triphenylphosphine and azodicarboxylate reagent was
discovered by O. Mitsunobu and since then rapid progress has been made in understanding and applying
the Mitsunobu reaction for various derivatization reactions. Due to versatile applications and mild reaction
conditions associated with the said strategy, the Mitsunobu reaction has received much attention in
the last almost fifty years and has been well reported. The basic objective of this review is to pay attention
on the recent advances and applications of the Mitsunobu reaction particularly in last decade. The
attention has also been paid to describe various modifications which have been explored in the traditional
Mitsunobu reaction by substituting P (III) reagents or azodicarboxylate reagents with other suitable
reagents or else using an organocatalyst with the objective to improve upon the traditional Mitsunobu
reaction. In the present review we wish to report the major advancements achieved in last few years
which are likely to be beneficial for the researchers across the globe.
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Affiliation(s)
- Sharad Kumar Panday
- Department of Applied Chemistry, Faculty of Engineering & Technology, M.J.P. Rohilkhand University, Bareilly-243 006, U.P, India
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48
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Li X, Wang R, Wu C, Chen J, Zhang J, Cui D, Wan X. Effect of the tactic structure on the chiroptical properties of helical vinylbiphenyl polymers. Polym Chem 2019. [DOI: 10.1039/c9py00481e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The effect of a tactic structure on the chiroptical properties of helical vinylbiphenyl polymers is systematically studied.
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Affiliation(s)
- Xiaofu Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Rong Wang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Chunji Wu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Junxian Chen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Jie Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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49
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Chen Y. Recent Advances in Methylation: A Guide for Selecting Methylation Reagents. Chemistry 2018; 25:3405-3439. [DOI: 10.1002/chem.201803642] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Yantao Chen
- Medicinal Chemistry, Cardiovascular, Renal and Metabolism, IMED Biotech UnitAstraZeneca Gothenburg Sweden
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50
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Wilkinson A, Lattmann E, Roces CB, Pedersen GK, Christensen D, Perrie Y. Lipid conjugation of TLR7 agonist Resiquimod ensures co-delivery with the liposomal Cationic Adjuvant Formulation 01 (CAF01) but does not enhance immunopotentiation compared to non-conjugated Resiquimod+CAF01. J Control Release 2018; 291:1-10. [PMID: 30291987 DOI: 10.1016/j.jconrel.2018.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 09/30/2018] [Accepted: 10/01/2018] [Indexed: 01/12/2023]
Abstract
Pattern recognition receptors, including the Toll-like receptors (TLRs), are important in the induction and activation of two critical arms of the host defence to pathogens and microorganisms: the rapid innate immune response (as characterised by the production of Th1 promoting cytokines and type 1 interferons) and the adaptive immune response. Through this activation, ligands and agonists of TLRs can enhance immunotherapeutic efficacy. Resiquimod is a small (water-soluble) agonist of the endosome-located Toll-like receptors 7 and 8 (TLR7/8). However due to its molecular attributes it rapidly distributes throughout the body after injection. To circumvent this, these TLR agonists can be incorporated within delivery systems, such as liposomes, to promote the co-delivery of both antigen and agonists to antigen presenting cells. In this present study, resiquimod has been chemically conjugated to a lipid to form a lipid-TLR7/8 agonist conjugate which can be incorporated within immunogenic cationic liposomes composed of dimethyldioctadecylammonium bromide (DDA) and the immunostimulatory glycolipid trehalose 6,6' - dibehenate (TDB). This DDA:TDB-TLR7/8 formulation offers similar vesicle characteristics to DDA:TDB (size and charge) and offers high retention of both resiquimod and the electrostatically adsorbed TB subunit antigen Ag85B-ESAT6-Rv2660c (H56). Following immunisation through the intramuscular (i.m.) route, these cationic DDA:TDB-TLR7/8 liposomes form a vaccine depot at the injection site. However, immunisation studies have shown that this biodistribution does not translate into notably increased antibody nor Th1 responses at the spleen and draining popliteal lymph node compared to DDA:TDB liposomes. This work demonstrates that the conjugation of TLR7/8 agonists to cationic liposomes can promote co-delivery but the immune responses stimulated do not merit the added complexity considerations of the formulation.
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Affiliation(s)
| | - Eric Lattmann
- School of Life and Health Sciences, Aston University, Birmingham, UK
| | - Carla B Roces
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral St, Glasgow G4 0RE, UK
| | - Gabriel K Pedersen
- Department of Infectious Disease Immunology, Statens Serum Institute, Copenhagen, Denmark
| | - Dennis Christensen
- Department of Infectious Disease Immunology, Statens Serum Institute, Copenhagen, Denmark
| | - Yvonne Perrie
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral St, Glasgow G4 0RE, UK.
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