1
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Yokoyama T, Hisatomi K, Oshima S, Tanaka I, Okada T, Toyooka N. Discovery and optimization of isoliquiritigenin as a death-associated protein kinase 1 inhibitor. Eur J Med Chem 2024; 279:116836. [PMID: 39243455 DOI: 10.1016/j.ejmech.2024.116836] [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: 08/07/2024] [Revised: 09/01/2024] [Accepted: 09/02/2024] [Indexed: 09/09/2024]
Abstract
Death-associated protein kinase 1 (DAPK1) is a phosphotransferase in the serine/threonine kinase family. Inhibiting DAPK1 is expected to be beneficial in treating Alzheimer's disease and protecting neuronal cells during cerebral ischemia. In this study, we demonstrated that the natural chalcone isoliquiritigenin inhibits DAPK1 in an ATP-competitive manner, and we synthesized halogen derivatives to amplify the inhibitory effect. Among the compounds tested, the chlorine, bromine, and iodine derivatives exhibited high DAPK1 inhibitory activity and binding affinity. Crystal structure analysis revealed that this improvement is attributable to the halogen atoms fitting well into the hydrophobic pocket formed by I77, L93, and I160. In particular, the chlorine derivative showed a significant enthalpic contribution to the interaction with DAPK1, suggesting its potential as a primary compound for new DAPK1 inhibitors.
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Affiliation(s)
- Takeshi Yokoyama
- Faculty of Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0914, Japan.
| | - Kotono Hisatomi
- Graduate School of Pharma-Medical Sciences, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan
| | - Saki Oshima
- Graduate School of Pharma-Medical Sciences, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan
| | - Ichiro Tanaka
- Graduate School of Science and Engineering, Ibaraki University, Nakanarusawa 4-12-1, Hitachi, Ibaraki, 316-8511, Japan
| | - Takuya Okada
- Graduate School of Pharma-Medical Sciences, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan
| | - Naoki Toyooka
- Graduate School of Pharma-Medical Sciences, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan
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2
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Sreekanth V, Zhou Q, Kokkonda P, Bermudez-Cabrera HC, Lim D, Law BK, Holmes BR, Chaudhary SK, Pergu R, Leger BS, Walker JA, Gifford DK, Sherwood RI, Choudhary A. Chemogenetic System Demonstrates That Cas9 Longevity Impacts Genome Editing Outcomes. ACS CENTRAL SCIENCE 2020; 6:2228-2237. [PMID: 33376784 PMCID: PMC7760466 DOI: 10.1021/acscentsci.0c00129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Indexed: 06/02/2023]
Abstract
Prolonged Cas9 activity can hinder genome engineering as it causes off-target effects, genotoxicity, heterogeneous genome-editing outcomes, immunogenicity, and mosaicism in embryonic editing-issues which could be addressed by controlling the longevity of Cas9. Though some temporal controls of Cas9 activity have been developed, only cumbersome systems exist for modifying the lifetime. Here, we have developed a chemogenetic system that brings Cas9 in proximity to a ubiquitin ligase, enabling rapid ubiquitination and degradation of Cas9 by the proteasome. Despite the large size of Cas9, we were able to demonstrate efficient degradation in cells from multiple species. Furthermore, by controlling the Cas9 lifetime, we were able to bias the DNA repair pathways and the genotypic outcome for both templated and nontemplated genome editing. Finally, we were able to dosably control the Cas9 activity and specificity to ameliorate the off-target effects. The ability of this system to change the Cas9 lifetime and, therefore, bias repair pathways and specificity in the desired direction allows precision control of the genome editing outcome.
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Affiliation(s)
- Vedagopuram Sreekanth
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Qingxuan Zhou
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Praveen Kokkonda
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Heysol C. Bermudez-Cabrera
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
- Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
| | - Donghyun Lim
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Benjamin K. Law
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Benjamin R. Holmes
- McGovern Institute for Brain Research at MIT, Cambridge, Massachusetts 02142, United States
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Santosh K. Chaudhary
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Rajaiah Pergu
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Brittany S. Leger
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - James A. Walker
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - David K. Gifford
- McGovern Institute for Brain Research at MIT, Cambridge, Massachusetts 02142, United States
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Richard I. Sherwood
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
- Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Hubrecht Institute for Developmental Biology and Stem Cell Research, Royal Netherlands Academy of Arts and Sciences (KNAW), Utrecht 3584 CT, The Netherlands
| | - Amit Choudhary
- Chemical Biology and Therapeutics Science Program, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, Massachusetts 02115, United States
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, United States
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3
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Mahindra A, Janha O, Mapesa K, Sanchez-Azqueta A, Alam MM, Amambua-Ngwa A, Nwakanma DC, Tobin AB, Jamieson AG. Development of Potent PfCLK3 Inhibitors Based on TCMDC-135051 as a New Class of Antimalarials. J Med Chem 2020; 63:9300-9315. [PMID: 32787140 PMCID: PMC7497403 DOI: 10.1021/acs.jmedchem.0c00451] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Indexed: 12/20/2022]
Abstract
The protein kinase PfCLK3 plays a critical role in the regulation of malarial parasite RNA splicing and is essential for the survival of blood stage Plasmodium falciparum. We recently validated PfCLK3 as a drug target in malaria that offers prophylactic, transmission blocking, and curative potential. Herein, we describe the synthesis of our initial hit TCMDC-135051 (1) and efforts to establish a structure-activity relationship with a 7-azaindole-based series. A total of 14 analogues were assessed in a time-resolved fluorescence energy transfer assay against the full-length recombinant protein kinase PfCLK3, and 11 analogues were further assessed in asexual 3D7 (chloroquine-sensitive) strains of P. falciparum parasites. SAR relating to rings A and B was established. These data together with analysis of activity against parasites collected from patients in the field suggest that TCMDC-135051 (1) is a promising lead compound for the development of new antimalarials with a novel mechanism of action targeting PfCLK3.
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Affiliation(s)
- Amit Mahindra
- School
of Chemistry, University of Glasgow, Joseph Black Building, University
Avenue, Glasgow G12 8QQ, U.K.
| | - Omar Janha
- Centre
for Translational Pharmacology, Institute of Molecular Cell and Systems Biology, University of Glasgow, Davidson Building, Glasgow G12 8QQ, U.K.
| | - Kopano Mapesa
- School
of Chemistry, University of Glasgow, Joseph Black Building, University
Avenue, Glasgow G12 8QQ, U.K.
| | - Ana Sanchez-Azqueta
- Centre
for Translational Pharmacology, Institute of Molecular Cell and Systems Biology, University of Glasgow, Davidson Building, Glasgow G12 8QQ, U.K.
| | - Mahmood M. Alam
- Wellcome
Centre for Integrative Parasitology and Centre for Translational Pharmacology,
Institute of Infection Immunity and Inflammation, University of Glasgow, Glasgow G12 8TA, U.K.
| | - Alfred Amambua-Ngwa
- MRC
Unit The Gambia at LSHTM, Atlantic Boulevard,
Fajara, P. O. Box 273, Banjul, The Gambia
| | - Davis C. Nwakanma
- MRC
Unit The Gambia at LSHTM, Atlantic Boulevard,
Fajara, P. O. Box 273, Banjul, The Gambia
| | - Andrew B. Tobin
- Centre
for Translational Pharmacology, Institute of Molecular Cell and Systems Biology, University of Glasgow, Davidson Building, Glasgow G12 8QQ, U.K.
| | - Andrew G. Jamieson
- School
of Chemistry, University of Glasgow, Joseph Black Building, University
Avenue, Glasgow G12 8QQ, U.K.
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4
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Kawabata H, Hirama T, Yanagisawa T, Sato K, Kogure N, Kitajima M, Takayama H. Asymmetric Total Synthesis of Biphenylquinolizidine Alkaloids 4″- O-Demethyllythridine and 14- epi-4″- O-Demethyllythridine. Org Lett 2019; 21:7982-7986. [PMID: 31524399 DOI: 10.1021/acs.orglett.9b02962] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first asymmetric total synthesis of new biphenylquinolizidine alkaloids 4″-O-demethyllythridine and 14-epi-4″-O-demethyllythridine isolated from Heimia salicifolia was accomplished. The key steps in the synthesis were a copper(I)-catalyzed asymmetric intramolecular aza-Michael reaction to build a chiral 4-arylquinolizidine unit and an intramolecular Suzuki-Miyaura cross-coupling reaction to construct a macrolactone ring comprising a biphenyl moiety.
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Affiliation(s)
- Haruka Kawabata
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Taku Hirama
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Tomomi Yanagisawa
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Keigo Sato
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Noriyuki Kogure
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Mariko Kitajima
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Hiromitsu Takayama
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
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5
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Thaima T, Willis AC, Pyne SG. Progress toward the total synthesis of 9β-hydroxyvertine: Construction of an advanced quinolizidine intermediate. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Virk S, Pansare SV. Biomimetic Organocatalytic Approach to 4-Arylquinolizidine Alkaloids and Application in the Synthesis of (-)-Lasubine II and (+)-Subcosine II. Org Lett 2019; 21:5524-5528. [PMID: 31246480 DOI: 10.1021/acs.orglett.9b01840] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An enantioselective, biomimetic organocatalytic synthesis of 4-arylquinolizidin-2-ones, key intermediates in the synthesis of several Lythraceae alkaloids, was developed. The methodology features S-proline-mediated Mannich/aza-Michael reactions of readily available arylideneacetones and Δ1-piperideine. The total syntheses of (-)-lasubine II and (+)-subcosine II as well as the formal syntheses of structurally related Lythraceae alkaloids were achieved. The use of Δ1-pyrroline in the Mannich/aza-Michael reaction provides enantiomerically enriched 5-arylindolizidin-7-ones, which are precursors to nonopiate antinociceptive agents.
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Affiliation(s)
- Seerat Virk
- Department of Chemistry , Memorial University , St. John's , Newfoundland , Canada A1B 3X7
| | - Sunil V Pansare
- Department of Chemistry , Memorial University , St. John's , Newfoundland , Canada A1B 3X7
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7
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Zaidan RK, Evans P. Strategies for the Asymmetric Construction of Pelletierine and its Use in the Synthesis of Sedridine, Myrtine, and Lasubine. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900477] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Raed K. Zaidan
- School of Chemistry Centre for Synthesis and Chemical Biology University College Dublin Dublin D04, N2E5 Ireland
- Department of Chemistry College of Science University of Basra Iraq
| | - Paul Evans
- School of Chemistry Centre for Synthesis and Chemical Biology University College Dublin Dublin D04, N2E5 Ireland
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8
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Yuan W, Pan Y, Zhang X, Liang P, Zhang J, Jiao W, Shao H. Direct and highly stereoselective synthesis of quinolizidine iminosugars promoted by l-proline-Et 3N. Org Biomol Chem 2018; 16:9230-9236. [PMID: 30483692 DOI: 10.1039/c8ob01953c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild and effective method for the synthesis of polyhydroxylated quinolizidine iminosugars is described. The Mannich-type reaction of iminosugar C-glycosides with aldehyde in the presence of l-proline-Et3N provides polyhydroxylated quinolizidine iminosugars, and desired products as the potential glucosidase inhibitors were obtained in good to excellent yields with excellent stereoselectivity.
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Affiliation(s)
- Wen Yuan
- Natural Products Research Centre, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China.
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9
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Hirama T, Umemura T, Kogure N, Kitajima M, Takayama H. Synthetic study of biphenylquinolizidine alkaloids I. Asymmetric total synthesis of lasubine I featuring organocatalyzed asymmetric intramolecular aza-Michael addition. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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10
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Veerasamy N, Carter RG. Synthesis of quinolizidine-containing lycopodium alkaloids and related natural products. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Enzymatic Kinetic Resolution of 2-Piperidineethanol for the Enantioselective Targeted and Diversity Oriented Synthesis. Int J Mol Sci 2015; 17:ijms17010017. [PMID: 26712740 PMCID: PMC4730264 DOI: 10.3390/ijms17010017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/11/2015] [Accepted: 12/15/2015] [Indexed: 01/22/2023] Open
Abstract
2-Piperidineethanol (1) and its corresponding N-protected aldehyde (2) were used for the synthesis of several natural and synthetic compounds. The existence of a stereocenter at position 2 of the piperidine skeleton and the presence of an easily-functionalized group, such as the alcohol, set 1 as a valuable starting material for enantioselective synthesis. Herein, are presented both synthetic and enzymatic methods for the resolution of the racemic 1, as well as an overview of synthesized natural products starting from the enantiopure 1.
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12
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Kwon Y, Song J, Lee H, Kim EY, Lee K, Lee SK, Kim S. Design, Synthesis, and Biological Activity of Sulfonamide Analogues of Antofine and Cryptopleurine as Potent and Orally Active Antitumor Agents. J Med Chem 2015; 58:7749-62. [PMID: 26393416 DOI: 10.1021/acs.jmedchem.5b00764] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Due to their profound antiproliferative activity and unique mode of action, phenanthroindolizidine and phenanthroquinolizidine alkaloids, represented by antofine and cryptopleurine, have attracted attention recently as potential therapeutic agents. We have designed, synthesized, and evaluated the methanesulfonamide analogues of these natural alkaloids with the hope of improving their druglikeness. The analogues showed enhanced growth inhibition of human cancer cells compared with the parent natural products. In particular, a methanesulfonamide analogue of cryptopleurine (5b) exhibited improved bioavailability and significant antitumor activity, which suggests that 5b is a promising new anticancer agent. Our studies suggest that the inhibition of cancer cell growth by 5b is associated with the induction of G0/G1 cell cycle arrest via nicotinamide N-methyltransferase-dependent JNK activation in Caki-1 renal cancer cells. In addition, compound 5b significantly inhibited the migration and invasion of Caki-1 cancer cells by modulating the p38 MAPK signaling pathway.
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Affiliation(s)
- Yongseok Kwon
- Research Institute of Pharmaceutical Science, College of Pharmacy, Seoul National University , Seoul 151-742, Korea
| | - Jayoung Song
- Natural Products Research Institute, College of Pharmacy, Seoul National University , Seoul 151-742, Korea
| | - Honggu Lee
- Research Institute of Pharmaceutical Science, College of Pharmacy, Seoul National University , Seoul 151-742, Korea
| | - Eun-Yeong Kim
- College of Pharmacy, Korea University , Sejong 339-700, Korea
| | - Kiho Lee
- College of Pharmacy, Korea University , Sejong 339-700, Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University , Seoul 151-742, Korea
| | - Sanghee Kim
- Research Institute of Pharmaceutical Science, College of Pharmacy, Seoul National University , Seoul 151-742, Korea
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13
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Mei R, Xu D, Hu H, Song D, Zhang H, Ma D, Xie X, She X. Biomimetic Total Syntheses of (+)-Dihydrolyfoline and (-)-5-epi-Dihydrolyfoline. Org Lett 2015; 17:2230-3. [PMID: 25885429 DOI: 10.1021/acs.orglett.5b00846] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first asymmetric total syntheses of (+)-dihydrolyfoline and (-)-5-epi-dihydrolyfoline have been achieved in five and six steps with 4.6% and 14% overall yields, respectively, in which the chiral biaryl axes were constructed in a highly regioselective and stereoselective manner via a biogenetic enzymatic oxidative couplings of phenols, and the requisite quinolizidinone cores were prepared by an enzymatic Mannich reaction.
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Affiliation(s)
- Ruoming Mei
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Dengyu Xu
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Haitao Hu
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Dengpeng Song
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Hao Zhang
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Donghui Ma
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xingang Xie
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xuegong She
- †State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.,‡Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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14
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Scope and limitations of the synthesis of functionalized quinolizidinones and related compounds by a simple precursor approach via addition of lithium allylmagnesates to 2-pyridones and RCM as key steps. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2012. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.02.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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