1
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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2
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Puri S. Oxygen as a Heteroatom in Propargylic Alcohols: Reactivity, Selectivity, and Applications. ChemistrySelect 2020. [DOI: 10.1002/slct.202002141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Surendra Puri
- Department of ChemistryHemvati Nandan Bahuguna Garhwal University (A Central University) Srinagar (Garhwal) Uttarakhand 246174 India
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3
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Li C, Shi D. Structural and Bioactive Studies of Halogenated Constituents from Sponges. Curr Med Chem 2020; 27:2335-2360. [PMID: 30417770 DOI: 10.2174/0929867325666181112092159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 09/10/2018] [Accepted: 11/06/2018] [Indexed: 11/22/2022]
Abstract
Marine organisms are abundant sources of bioactive natural products. Among metabolites produced by sponges and their associated microbial communities, halogenated natural compounds accounted for an important part due to their potent biological activities. The present review updates and compiles a total of 258 halogenated organic compounds isolated in the past three decades, especially brominated derivatives derived from 31 genera of marine sponges. These compounds can be classified as the following classes: brominated polyunsaturated lipids, nitrogen compounds, brominated tyrosine derivatives and other halogenated compounds. These substances were listed together with their source organisms, structures and bioactivities. For this purpose, 84 references were consulted.
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Affiliation(s)
- Chao Li
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dayong Shi
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Chen B, Yang Y, Yang Y, Liu S, Chen Q, Zeng X, Xu B. Effects of the Hydrogen Bonding Network on Electrophilic Activation and Electrode Passivation: Electrochemical Chlorination and Bromination of Aromatics. ChemElectroChem 2019. [DOI: 10.1002/celc.201900869] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bocheng Chen
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Yi Yang
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Yuhao Yang
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Shiwen Liu
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Qianjin Chen
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Xiaojun Zeng
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
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5
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Wang T, Wu B, Guo W, Wu S, Zhang H, Dang Y, Wang J. Synthesis, catalysis, and DFT study of a ruthenium carbene complex bearing a 1,2-dicarbadodecaborane (12)-1,2-dithiolate ligand. Dalton Trans 2019; 48:2646-2656. [PMID: 30702720 DOI: 10.1039/c8dt04290j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A ruthenium carbene catalyst containing a 1,2-dicarbadodecaborane(12)-1,2-dithiolate ligand was synthesized, and the structure was determined by single crystal X-ray diffraction. This new ruthenium carbene catalyst can catalyze the ring opening metathesis polymerization (ROMP) reaction of norbornene to give the corresponding Z-polymer (Z/E ratio, 98 : 2) in high yield (93%); ring opening cross metathesis (ROCM) reactions of norbornene/5-norbornene-2-exo, 3-exo-dimethanol with styrene or 4-fluorostyrene to give the corresponding Z-olefin products (Z/E ratios, 97 : 3-98 : 2), respectively, in high yields (73%-88%); cross metathesis (CM) reactions of terminal alkenes with (Z)-but-2-ene-1,4-diol to give high Z-olefin products in low yields; homometathesis reactions of terminal alkenes to give olefin products in low yields. Like other ruthenium carbene catalysts, the new complex tolerates many different functional groups. DFT calculations were also performed in order to understand the process of forming Z-olefin products and the decomposition process of catalysts.
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Affiliation(s)
- Tao Wang
- Department of Chemistry, College of Science, Tianjin University, Tianjin 300350, P. R. China.
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6
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Liu C, Xue Y, Ding L, Zhang H, Yang F. Au-Catalyzed Addition of Nucleophiles to Chloroalkynes: A Regio- and Stereoselective Synthesis of (Z
)-Alkenyl Chlorides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801222] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Congrong Liu
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Yunbo Xue
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Lianghui Ding
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Haiyun Zhang
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Fulai Yang
- Department State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University; 210009 Nanjing P. R. China
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7
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Chen B, Xia X, Zeng X, Xu B. Hydrogen bonding network assisted regio- and stereo- controlled hydrohalogenations of sulfonyl alkynes. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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8
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Zeng X, Liu S, Hammond GB, Xu B. Hydrogen-Bonding-Assisted Brønsted Acid and Gold Catalysis: Access to Both ( E)- and ( Z)-1,2-Haloalkenes via Hydrochlorination of Haloalkynes. ACS Catal 2018; 8:904-909. [PMID: 30410816 PMCID: PMC6207084 DOI: 10.1021/acscatal.7b03563] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/10/2017] [Indexed: 12/23/2022]
Abstract
![]()
We
have developed an efficient synthesis of both (Z)-
and (E)-chlorohaloalkenes via hydrochlorination
of haloalkynes, based on two distinct hydrogen-bond-network-assisted
catalytic systems: Brønsted acid catalysis and gold catalysis.
Both systems offer high stereoselectivity, good chemical yields, and
diverse functional group tolerance.
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Affiliation(s)
- Xiaojun Zeng
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Shiwen Liu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Gerald B. Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
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9
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Mayer AMS, Rodríguez AD, Taglialatela-Scafati O, Fusetani N. Marine Pharmacology in 2012-2013: Marine Compounds with Antibacterial, Antidiabetic, Antifungal, Anti-Inflammatory, Antiprotozoal, Antituberculosis, and Antiviral Activities; Affecting the Immune and Nervous Systems, and Other Miscellaneous Mechanisms of Action. Mar Drugs 2017; 15:md15090273. [PMID: 28850074 PMCID: PMC5618412 DOI: 10.3390/md15090273] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/17/2017] [Accepted: 08/21/2017] [Indexed: 12/23/2022] Open
Abstract
The peer-reviewed marine pharmacology literature from 2012 to 2013 was systematically reviewed, consistent with the 1998–2011 reviews of this series. Marine pharmacology research from 2012 to 2013, conducted by scientists from 42 countries in addition to the United States, reported findings on the preclinical pharmacology of 257 marine compounds. The preclinical pharmacology of compounds isolated from marine organisms revealed antibacterial, antifungal, antiprotozoal, antituberculosis, antiviral and anthelmitic pharmacological activities for 113 marine natural products. In addition, 75 marine compounds were reported to have antidiabetic and anti-inflammatory activities and affect the immune and nervous system. Finally, 69 marine compounds were shown to display miscellaneous mechanisms of action which could contribute to novel pharmacological classes. Thus, in 2012–2013, the preclinical marine natural product pharmacology pipeline provided novel pharmacology and lead compounds to the clinical marine pharmaceutical pipeline, and contributed significantly to potentially novel therapeutic approaches to several global disease categories.
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Affiliation(s)
- Alejandro M S Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, 555 31st Street, Downers Grove, IL 60515, USA.
| | - Abimael D Rodríguez
- Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de León Avenue, San Juan, PR 00926, USA.
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10
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New chlorinated xanthone and anthraquinone produced by a mangrove-derived fungus Penicillium citrinum HL-5126. J Antibiot (Tokyo) 2017; 70:823-827. [PMID: 28465625 DOI: 10.1038/ja.2017.52] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/11/2017] [Accepted: 04/04/2017] [Indexed: 12/11/2022]
Abstract
Two new chlorinated metabolites 4-chloro-1-hydroxy-3-methoxy-6-methyl-8-methoxycarbonyl-xanthen-9-one (1) and 2'-acetoxy-7-chlorocitreorosein (2), together with three known compounds (3-5), were obtained from the EtOAc extract of the endophytic fungus Penicillium citrinum HL-5126 isolated from the mangrove Bruguiera sexangula var. rhynchopetala collected in the South China Sea. Their structures were elucidated by the detailed analysis of comprehensive spectroscopic data. All compounds were evaluated for their antibacterial and topoisomerase I inhibitory activities. Compound 2 exhibited antibacterial activity against Vibrio parahaemolyticus with an MIC value of 10 μm.
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11
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Liu T, Zhou M, Yuan T, Fu B, Wang X, Peng F, Shao Z. Enantioselective Conjugate Additions of “Difficult” Ketones to Nitrodienynes and Tandem Annulations. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600849] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Teng Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 People's Republic of China
| | - Mingxin Zhou
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 People's Republic of China
| | - Tengrui Yuan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 People's Republic of China
| | - Binbin Fu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 People's Republic of China
| | - Xinran Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 People's Republic of China
| | - Fangzhi Peng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 People's Republic of China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 People's Republic of China
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12
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Direct synthesis of Z-alkenyl halides through catalytic cross-metathesis. Nature 2016; 531:459-65. [PMID: 27008965 PMCID: PMC4858352 DOI: 10.1038/nature17396] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 02/02/2016] [Indexed: 12/23/2022]
Abstract
Olefin metathesis has had a large impact on modern organic chemistry, but important shortcomings remain: for example, the lack of efficient processes that can be used to generate acyclic alkenyl halides. Halo-substituted ruthenium carbene complexes decompose rapidly or deliver low activity and/or minimal stereoselectivity, and our understanding of the corresponding high-oxidation-state systems is limited. Here we show that previously unknown halo-substituted molybdenum alkylidene species are exceptionally reactive and are able to participate in high-yielding olefin metathesis reactions that afford acyclic 1,2-disubstituted Z-alkenyl halides. Transformations are promoted by small amounts of a catalyst that is generated in situ and used with unpurified, commercially available and easy-to-handle liquid 1,2-dihaloethene reagents, and proceed to high conversion at ambient temperature within four hours. We obtain many alkenyl chlorides, bromides and fluorides in up to 91 per cent yield and complete Z selectivity. This method can be used to synthesize biologically active compounds readily and to perform site- and stereoselective fluorination of complex organic molecules.
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13
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Abstract
This review covers the literature published in 2013 for marine natural products (MNPs), with 982 citations (644 for the period January to December 2013) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1163 for 2013), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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14
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Gribble GW. Biological Activity of Recently Discovered Halogenated Marine Natural Products. Mar Drugs 2015; 13:4044-136. [PMID: 26133553 PMCID: PMC4515607 DOI: 10.3390/md13074044] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 01/08/2023] Open
Abstract
This review presents the biological activity-antibacterial, antifungal, anti-parasitic, antiviral, antitumor, antiinflammatory, antioxidant, and enzymatic activity-of halogenated marine natural products discovered in the past five years. Newly discovered examples that do not report biological activity are not included.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA.
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15
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He WF, Liang LF, Cai YS, Gao LX, Li YF, Li J, Liu HL, Guo YW. Brominated polyunsaturated lipids with protein tyrosine phosphatase-1B inhibitory activity from Chinese marine sponge Xestospongia testudinaria. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 17:861-866. [PMID: 25832997 DOI: 10.1080/10286020.2015.1026334] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new brominated polyunsaturated lipid, methyl (E,E)-14,14-dibromo-4,6,13-tetradecatrienoate (1), along with three known related analogues (2-4), were isolated from the Et2O-soluble portion of the acetone extract of Chinese marine sponge Xestospongia testudinaria treated with diazomethane. The structure of the new compound was elucidated by detailed spectroscopic analysis and by comparison with literature data. Compound 3 exhibited significant inhibitory activity against protein tyrosine phosphatase 1B (PTP1B), a key target for the treatment of type II diabetes and obesity, with an IC50 value of 5.30 ± 0.61 μM, when compared to the positive control oleanolic acid (IC50 = 2.39 ± 0.26 μM).
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Affiliation(s)
- Wen-Fei He
- a School of Pharmaceutical Sciences, Wenzhou Medical University , Wenzhou 325035 , China
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16
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Hari Babu M, Dwivedi V, Kant R, Sridhar Reddy M. Palladium-Catalyzed Regio- and Stereoselective Cross-Addition of Terminal Alkynes to Ynol Ethers and Synthesis of 1,4-Enyn-3-ones. Angew Chem Int Ed Engl 2015; 54:3783-6. [DOI: 10.1002/anie.201411261] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Indexed: 01/08/2023]
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17
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Hari Babu M, Dwivedi V, Kant R, Sridhar Reddy M. Palladium-Catalyzed Regio- and Stereoselective Cross-Addition of Terminal Alkynes to Ynol Ethers and Synthesis of 1,4-Enyn-3-ones. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411261] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Dwivedi V, Hari Babu M, Kant R, Sridhar Reddy M. N-Substitution dependent stereoselectivity switch in palladium catalyzed hydroalkynylation of ynamides: a regio and stereoselective synthesis of ynenamides. Chem Commun (Camb) 2015; 51:14996-9. [DOI: 10.1039/c5cc06251a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A palladium catalysed regioselective hydroalkynylation of ynamides for ynenamides is achieved with an N-substitution dependent stereoselectivity switch.
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Affiliation(s)
- Vikas Dwivedi
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Madala Hari Babu
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Ruchir Kant
- Molecular & Structural Biology Division
- CSIR-CDRI
- Lucknow 226031
- India
| | - Maddi Sridhar Reddy
- Medicinal & Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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19
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Sun Y, Takada K, Nogi Y, Okada S, Matsunaga S. Lower homologues of ahpatinin, aspartic protease inhibitors, from a marine Streptomyces sp. JOURNAL OF NATURAL PRODUCTS 2014; 77:1749-1752. [PMID: 24960234 DOI: 10.1021/np500337m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Two linear peptides, ahpatinin Ac (1) and ahpatinin Pr (2), were isolated together with the known ahpatinin (i)Bu, pepstatin Ac, pepstatin Pr, and pepsinostreptin from a Streptomyces sp. derived from a deep-sea sediment. The structure of ahpatinin Pr (2) was assigned by interpretation of NMR data and HPLC analysis of the hydrolysate after converting to the DNP-L-Val derivative. During the LCMS analysis of the acid hydrolysate, products arising from the retro-aldol cleavage of the statine and Ahppa units in 2 were observed and could facilitate the determination of the absolute configuration of the statine class of nonproteinogenic amino acids. Both ahpatinin Ac (1) and ahpatinin Pr (2) potently inhibited pepsin and moderately inhibited cathepsin B.
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Affiliation(s)
- Yi Sun
- Laboratory of Aquatic Natural Products Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Bunkyo-ku, Tokyo 113-8657, Japan
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20
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Cornelissen L, Lefrancq M, Riant O. Copper-Catalyzed Cross-Coupling of Vinylsiloxanes with Bromoalkynes: Synthesis of Enynes. Org Lett 2014; 16:3024-7. [DOI: 10.1021/ol501140p] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Loïc Cornelissen
- Institute
of Condensed Matter
and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), − Université Catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Maxime Lefrancq
- Institute
of Condensed Matter
and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), − Université Catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Olivier Riant
- Institute
of Condensed Matter
and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), − Université Catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348 Louvain-la-Neuve, Belgium
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21
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Meng XL, Liu T, Sun ZW, Wang JC, Peng FZ, Shao ZH. Asymmetric catalytic conjugate addition of acetaldehyde to nitrodienynes/nitroenynes: applications to the syntheses of (+)-α-lycorane and chiral β-alkynyl acids. Org Lett 2014; 16:3044-7. [PMID: 24811051 DOI: 10.1021/ol501158b] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The catalytic enantioselective conjugate addition of acetaldehyde to polyconjugated substrates, nitrodienynes and nitroenynes, has been accomplished using organocatalysis. Various functionalized 1,3-enynes and propargylic compounds were obtained in moderate to good yields with high enantioselectivity. The synthetic utilities of the conjugate addition reactions have been highlighted in the concise total synthesis of (+)-α-lycorane and the metal-free synthesis of chiral β-alkynyl acids.
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Affiliation(s)
- Xue-Ling Meng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University , Kunming, Yunnan 650091, P. R. China
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22
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Brominated polyunsaturated lipids from the Chinese sponge Xestospongia testudinaria as a new class of pancreatic lipase inhibitors. Eur J Med Chem 2014; 79:290-7. [DOI: 10.1016/j.ejmech.2014.04.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 03/31/2014] [Accepted: 04/02/2014] [Indexed: 11/19/2022]
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23
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Li X, Peng F, Zhou M, Mo M, Zhao R, Shao Z. Catalytic asymmetric synthesis of 1,3-enyne scaffolds: design and synthesis of conjugated nitro dienynes as novel Michael acceptors and development of a new synthetic methodology. Chem Commun (Camb) 2014; 50:1745-7. [DOI: 10.1039/c3cc48951e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A catalytic enantioselective synthesis of 1,3-enynes for the development of nitro dienynes as novel Michael acceptors has been developed.
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Affiliation(s)
- Xiang Li
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091, China
| | - Fangzhi Peng
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091, China
| | - Mingtao Zhou
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091, China
| | - Mingjie Mo
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091, China
| | - Ruirui Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091, China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming 650091, China
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