1
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Wackelin DJ, Mao R, Sicinski KM, Zhao Y, Das A, Chen K, Arnold FH. Enzymatic Assembly of Diverse Lactone Structures: An Intramolecular C-H Functionalization Strategy. J Am Chem Soc 2024; 146:1580-1587. [PMID: 38166100 DOI: 10.1021/jacs.3c11722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Lactones are cyclic esters with extensive applications in materials science, medicinal chemistry, and the food and perfume industries. Nature's strategy for the synthesis of many lactones found in natural products always relies on a single type of retrosynthetic strategy, a C-O bond disconnection. Here, we describe a set of laboratory-engineered enzymes that use a new-to-nature C-C bond-forming strategy to assemble diverse lactone structures. These engineered "carbene transferases" catalyze intramolecular carbene insertions into benzylic or allylic C-H bonds, which allow for the synthesis of lactones with different ring sizes and ring scaffolds from simple starting materials. Starting from a serine-ligated cytochrome P450 variant previously engineered for other carbene-transfer activities, directed evolution generated a variant P411-LAS-5247, which exhibits a high activity for constructing a five-membered ε-lactone, lactam, and cyclic ketone products (up to 5600 total turnovers (TTN) and >99% enantiomeric excess (ee)). Further engineering led to variants P411-LAS-5249 and P411-LAS-5264, which deliver six-membered δ-lactones and seven-membered ε-lactones, respectively, overcoming the thermodynamically unfavorable ring strain associated with these products compared to the γ-lactones. This new carbene-transfer activity was further extended to the synthesis of complex lactone scaffolds based on fused, bridged, and spiro rings. The enzymatic platform developed here complements natural biosynthetic strategies for lactone assembly and expands the structural diversity of lactones accessible through C-H functionalization.
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Affiliation(s)
- Daniel J Wackelin
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Runze Mao
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Kathleen M Sicinski
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Yutao Zhao
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Anuvab Das
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Kai Chen
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Frances H Arnold
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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2
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Jiang R, Zhou DY, Asano K, Suzuki T, Suzuki T. Catalytic asymmetric synthesis of (−)-arctigenin using a chiral Ir complex. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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3
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Wu D, Jin L, Huang X, Deng H, Shen QK, Quan ZS, Zhang C, Guo HY. Arctigenin: pharmacology, total synthesis, and progress in structure modification. J Enzyme Inhib Med Chem 2022; 37:2452-2477. [PMID: 36093586 PMCID: PMC9481144 DOI: 10.1080/14756366.2022.2115035] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Arctium lappa L. is a prevalent medicinal herb and a health supplement that is commonly used in Asia. Over the last few decades, the bioactive component arctigenin has attracted the attention of researchers because of its anti-inflammatory, antioxidant, immunomodulatory, multiple sclerosis fighting, antitumor, and anti-leukemia properties. After summarising the research and literature on arctigenin, this study outlines the current status of research on pharmacological activity, total synthesis, and structural modification of arctigenin. The purpose of this study is to assist academics in obtaining a more comprehensive understanding of the research progress on arctigenin and to provide constructive suggestions for further investigation of this useful molecule.
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Affiliation(s)
- Dan Wu
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Lili Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Xing Huang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Hao Deng
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Qing-kun Shen
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Zhe-shan Quan
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Changhao Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Hong-Yan Guo
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affifiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
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4
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Shigekane M, Arai T, Tamura M, Uchida T, Kakiuchi F, Kochi T. Desymmetrization of Prochiral Methylenes by Asymmetric Chain-Walking Cyclization Using Bioxazoline Palladium Catalysts. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Kaur C, Sharma S, Thakur A, Sharma R. ASYMMETRIC SYNTHESIS: A GLANCE AT VARIOUS METHODOLOGIES FOR DIFFERENT FRAMEWORKS. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220610162605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Asymmetric reactions have made a significant advancement over the past few decades and involved the production of enantiomerically pure molecules using enantioselective organocatalysis, chiral auxiliaries/substrates, and reagents via controlling the absolute stereochemistry. The laboratory synthesis from an enantiomerically impure starting material gives a combination of enantiomers which are difficult to separate for chemists in the fields of medicine, chromatography, pharmacology, asymmetric synthesis, studies of structure-function relationships of proteins, life sciences and mechanistic studies. This challenging step of separation can be avoided by the use of asymmetric synthesis. Using pharmacologically relevant scaffolds/pharmacophores, the drug designing can also be achieved using asymmetric synthesis to synthesize receptor specific pharmacologically active chiral molecules. This approach can be used to synthesize asymmetric molecules from wide variety of reactants using specific asymmetric conditions which is also beneficial for environment due to less usage and discharge of chemicals into the environment. So, in this review, we have focused on the inclusive collation of diverse mechanisms in this area, to encourage auxiliary studies of asymmetric reactions to develop selective, efficient, environment-friendly and high yielding advanced processes in asymmetric reactions.
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Affiliation(s)
- Charanjit Kaur
- Department of Pharmaceutical Chemistry, Khalsa College of Pharmacy, Amritsar, Punjab, 143002
| | - Sachin Sharma
- School of Pharmacy, Taipei Medical University, Taiwan
| | | | - Ram Sharma
- School of Pharmacy, Taipei Medical University, Taiwan
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6
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Xuan Z, chen ZS. Cooperative Rh(II)/Pd(0) Dual‐Catalyzed Gem‐Difunctionalization of α‐Diazo Carbonyl Compounds: Construction of Quaternary Carbon Centers. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zi Xuan
- Gyeongsang National University Department of Chemistry (BK 21 Four) KOREA, REPUBLIC OF
| | - zi-sheng chen
- Northwest A&F University College of Chemistry and Pharmacy Yangling 712100, Shaanxi, P. R. China 712100 Shaanxi CHINA
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7
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Yamakawa Y, Ikuta T, Hayashi H, Hashimoto K, Fujii R, Kawashima K, Mori S, Uchida T, Katsuki T. Iridium(III)-Catalyzed Asymmetric Site-Selective Carbene C-H Insertion during Late-Stage Transformation. J Org Chem 2022; 87:6769-6780. [PMID: 35504014 DOI: 10.1021/acs.joc.2c00470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
C-H functionalization has recently received considerable attention because C-H functionalization during the late-stage transformation is a strong and useful tool for the modification of the bioactive compounds and the creation of new active molecules. Although a carbene transfer reaction can directly convert a C-H bond to the desired C-C bond in a stereoselective manner, its application in late-stage material transformation is limited. Here, we observed that the iridium-salen complex 6 exhibited efficient catalysis in asymmetric carbene C-H insertion reactions. Under optimized conditions, benzylic, allylic, and propargylic C-H bonds were converted to desired C-C bonds in an excellent stereoselective manner. Excellent regioselectivity was demonstrated in the reaction using not only simple substrate but also natural products, bearing multiple reaction sites. Moreover, based on the mechanistic studies, the iridium-catalyzed unique C-H insertion reaction involved rate-determining asynchronous concerted processes.
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Affiliation(s)
- Yuki Yamakawa
- Department of Chemistry, Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takashi Ikuta
- Department of Chemistry, Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroki Hayashi
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Keigo Hashimoto
- Department of Chemistry, Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ryoma Fujii
- Institute of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, Mito 310-8512, Japan.,Frontier Research Center for Applied Atomic Sciences, Ibaraki University, Tokai, Ibaraki 319-1106, Japan
| | - Kyohei Kawashima
- Institute of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, Mito 310-8512, Japan.,Frontier Research Center for Applied Atomic Sciences, Ibaraki University, Tokai, Ibaraki 319-1106, Japan
| | - Seiji Mori
- Institute of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, Mito 310-8512, Japan.,Frontier Research Center for Applied Atomic Sciences, Ibaraki University, Tokai, Ibaraki 319-1106, Japan
| | - Tatsuya Uchida
- Department of Chemistry, Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.,Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.,International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tsutomu Katsuki
- International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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8
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Mechanistic analysis of carbon-carbon bond formation by deoxypodophyllotoxin synthase. Proc Natl Acad Sci U S A 2022; 119:2113770119. [PMID: 34969844 PMCID: PMC8740726 DOI: 10.1073/pnas.2113770119] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2021] [Indexed: 11/18/2022] Open
Abstract
The completion of the tetracyclic core of etoposide, classified by the World Health Organization as an essential medicine, by the Fe/2OG oxygenase deoxypodophyllotoxin synthase follows a hybrid radical-polar pathway not previously seen in other members of this enzyme class. The implication of a substrate-based benzylic carbocation in this mechanism will inform ongoing efforts to create analogs of this important drug with improved or emergent properties and represents a new route for resolution of the initial substrate radical that is common to members of the class. This study adds to our understanding on a growing number of biochemical transformations in which carbocation intermediates are likely to be crucial. Deoxypodophyllotoxin contains a core of four fused rings (A to D) with three consecutive chiral centers, the last being created by the attachment of a peripheral trimethoxyphenyl ring (E) to ring C. Previous studies have suggested that the iron(II)- and 2-oxoglutarate–dependent (Fe/2OG) oxygenase, deoxypodophyllotoxin synthase (DPS), catalyzes the oxidative coupling of ring B and ring E to form ring C and complete the tetracyclic core. Despite recent efforts to deploy DPS in the preparation of deoxypodophyllotoxin analogs, the mechanism underlying the regio- and stereoselectivity of this cyclization event has not been elucidated. Herein, we report 1) two structures of DPS in complex with 2OG and (±)-yatein, 2) in vitro analysis of enzymatic reactivity with substrate analogs, and 3) model reactions addressing DPS’s catalytic mechanism. The results disfavor a prior proposal of on-pathway benzylic hydroxylation. Rather, the DPS-catalyzed cyclization likely proceeds by hydrogen atom abstraction from C7', oxidation of the benzylic radical to a carbocation, Friedel–Crafts-like ring closure, and rearomatization of ring B by C6 deprotonation. This mechanism adds to the known pathways for transformation of the carbon-centered radical in Fe/2OG enzymes and suggests what types of substrate modification are likely tolerable in DPS-catalyzed production of deoxypodophyllotoxin analogs.
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9
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Jin WB, Xu C, Qi XL, Zeng P, Gao W, Lai KH, Chiou J, Chan EWC, Leung YC, Chan TH, Wong KY, Chen S, Chan KF. Synthesis of 1,3,4-trisubstituted pyrrolidines as meropenem adjuvants targeting New Delhi metallo-β-lactamase. NEW J CHEM 2021. [DOI: 10.1039/d0nj06090a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A promising NDM-1 inhibitor was discovered by the construction of pyrrolidine library via boric acid-catalyzed 1,3-dipolar cycloaddition and cell-based screens.
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10
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Bai Y, Sun Y, Xie J, Li B, Bai Y, Zhang D, Liang J, Xiao C, Zhong A, Cao Y, Zheng X. The asarone-derived phenylpropanoids from the rhizome of Acorus calamus var. angustatus Besser. PHYTOCHEMISTRY 2020; 170:112212. [PMID: 31785552 DOI: 10.1016/j.phytochem.2019.112212] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 06/10/2023]
Abstract
Phenylpropanoids comprise a broad spectrum of biologically active natural products. As part of our ongoing research on antiepileptic active compounds from traditional Chinese herb, Acorus calamus var. angustatus Besser, three undescribed phenylpropanoids and twenty-two known ones were isolated. All the undescribed structures were determined by a combination of 1D and 2D NMR, HRMS. In addition, γ-asaronol was identified as racemates and its absolute configuration were determined by the modified Mosher's method and ECD spectral data. Furthermore, some selected isolated compounds were evaluated for their cell viability and neuroprotective activities in H2O2-induced SH-SY5Y cells. α-Asaronol, β-asaronol, 3-(2,4,5-trimethoxyphenyl)propan-1-ol and 1,2,4-trimethoxy-5-(3-methoxypropyl)benzene exerted potential protective activity from neuronal oxidative stress in all test concentrations ranging from 0.01 to 100 μM, in which the neuroprotective activity of β-asaronol was the best.
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Affiliation(s)
- Yajun Bai
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China; Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, PR China
| | - Ying Sun
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China
| | - Jing Xie
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China
| | - Bin Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China
| | - Yujun Bai
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China
| | - Dongxu Zhang
- Department of Medicinal Chemistry, School of Pharmacy Fourth Military Medical University, Xi'an, 710032, PR China
| | - Jing Liang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, PR China
| | - Chaoni Xiao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China
| | - Aiguo Zhong
- College of Pharmaceutical, Chemical and Materials Engineering, Taizhou University, Taizhou, 317000, PR China
| | - Yanjun Cao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China.
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi'an 710069, PR China.
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11
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Dirhodium tetracarboxylates as catalysts for selective intermolecular C-H functionalization. Nat Rev Chem 2019; 3:347-360. [PMID: 32995499 DOI: 10.1038/s41570-019-0099-x] [Citation(s) in RCA: 186] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
C-H Functionalization has become widely recognized as an exciting new strategy for the synthesis of complex molecular targets. Instead of relying on functional groups as the controlling elements of how molecules are assembled, it offers a totally different logic for organic synthesis. For this type of strategy to be successful, reagents and catalysts need to be developed that generate intermediates that are sufficiently reactive to functionalize C-H bonds but still capable of distinguishing between the different C-H bonds and other functional groups present in a molecule. The most well-established approaches have tended to use substrates that have inherently a favored site for C-H functionalization or rely on intramolecular reactions to control where the reaction will occur. A challenging but potentially more versatile approach would be to use catalysts to control the site-selectivity without requiring the influence of any directing group. One example that is capable of achieving such transformations is the C-H insertion chemistry of transient metal carbenes. Dirhodium tetracarboxylates have been shown to be especially effective catalysts for these reactions. This review will highlight the development of these dirhodium catalysts and illustrate their effectiveness to control both site-selective and stereoselective C-H functionalization of a wide variety of substrates.
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12
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Chang WC, Yang ZJ, Tu YH, Chien TC. Reaction Mechanism of a Nonheme Iron Enzyme Catalyzed Oxidative Cyclization via C-C Bond Formation. Org Lett 2018; 21:228-232. [PMID: 30550285 DOI: 10.1021/acs.orglett.8b03670] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A complementary study including design of mechanistic probes, biochemical assays, model analysis, and liquid chromatography coupled mass spectrometry was conducted to establish the reaction mechanism for a nonheme iron enzyme catalyzed (-)-podophyllotoxin formation. Our results indicate that the originally proposed hydroxylated intermediate is unlikely to be involved in this reaction. Instead, the formation of benzylic radical/carbocation intermediate can be utilized to trigger the C-C bond formation to construct the C-ring of (-)-podophyllotoxin.
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Affiliation(s)
- Wei-Chen Chang
- Department of Chemistry , North Carolina State University , Raleigh , North Carolina 27695 , United States
| | - Zhi-Jie Yang
- Department of Chemistry , National Taiwan Normal University , Taipei 11677 , Taiwan
| | - Yueh-Hua Tu
- Department of Chemistry , National Taiwan Normal University , Taipei 11677 , Taiwan
| | - Tun-Cheng Chien
- Department of Chemistry , National Taiwan Normal University , Taipei 11677 , Taiwan
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13
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Sun Z, Fridrich B, de Santi A, Elangovan S, Barta K. Bright Side of Lignin Depolymerization: Toward New Platform Chemicals. Chem Rev 2018; 118:614-678. [PMID: 29337543 PMCID: PMC5785760 DOI: 10.1021/acs.chemrev.7b00588] [Citation(s) in RCA: 732] [Impact Index Per Article: 122.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Indexed: 11/28/2022]
Abstract
Lignin, a major component of lignocellulose, is the largest source of aromatic building blocks on the planet and harbors great potential to serve as starting material for the production of biobased products. Despite the initial challenges associated with the robust and irregular structure of lignin, the valorization of this intriguing aromatic biopolymer has come a long way: recently, many creative strategies emerged that deliver defined products via catalytic or biocatalytic depolymerization in good yields. The purpose of this review is to provide insight into these novel approaches and the potential application of such emerging new structures for the synthesis of biobased polymers or pharmacologically active molecules. Existing strategies for functionalization or defunctionalization of lignin-based compounds are also summarized. Following the whole value chain from raw lignocellulose through depolymerization to application whenever possible, specific lignin-based compounds emerge that could be in the future considered as potential lignin-derived platform chemicals.
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Affiliation(s)
- Zhuohua Sun
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Bálint Fridrich
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Alessandra de Santi
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Saravanakumar Elangovan
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Katalin Barta
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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14
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Chu JCK, Rovis T. Complementary Strategies for Directed C(sp 3 )-H Functionalization: A Comparison of Transition-Metal-Catalyzed Activation, Hydrogen Atom Transfer, and Carbene/Nitrene Transfer. Angew Chem Int Ed Engl 2018; 57:62-101. [PMID: 29206316 PMCID: PMC5853126 DOI: 10.1002/anie.201703743] [Citation(s) in RCA: 483] [Impact Index Per Article: 80.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Indexed: 01/07/2023]
Abstract
The functionalization of C(sp3 )-H bonds streamlines chemical synthesis by allowing the use of simple molecules and providing novel synthetic disconnections. Intensive recent efforts in the development of new reactions based on C-H functionalization have led to its wider adoption across a range of research areas. This Review discusses the strengths and weaknesses of three main approaches: transition-metal-catalyzed C-H activation, 1,n-hydrogen atom transfer, and transition-metal-catalyzed carbene/nitrene transfer, for the directed functionalization of unactivated C(sp3 )-H bonds. For each strategy, the scope, the reactivity of different C-H bonds, the position of the reacting C-H bonds relative to the directing group, and stereochemical outcomes are illustrated with examples in the literature. The aim of this Review is to provide guidance for the use of C-H functionalization reactions and inspire future research in this area.
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Affiliation(s)
- John C K Chu
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY, 10027, USA
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA
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15
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Chu JCK, Rovis T. Komplementäre Strategien für die dirigierte C(sp3)-H-Funktionalisierung: ein Vergleich von übergangsmetallkatalysierter Aktivierung, Wasserstoffatomtransfer und Carben- oder Nitrentransfer. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703743] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- John C. K. Chu
- Department of Chemistry; Colorado State University; Fort Collins CO 80523 USA
| | - Tomislav Rovis
- Department of Chemistry; Columbia University; 3000 Broadway New York NY 10027 USA
- Department of Chemistry; Colorado State University; Fort Collins CO 80523 USA
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16
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Gao E, Zhou ZQ, Zou J, Yu Y, Feng XL, Chen GD, He RR, Yao XS, Gao H. Bioactive Asarone-Derived Phenylpropanoids from the Rhizome of Acorus tatarinowii Schott. JOURNAL OF NATURAL PRODUCTS 2017; 80:2923-2929. [PMID: 29116780 DOI: 10.1021/acs.jnatprod.7b00457] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Eight new (1a/1b, 2a, 3a, 4a/4b, and 5a/5b) and seven known (2b, 3b, and 6-10) asarone-derived phenylpropanoids, a known asarone-derived lignan (12), and four known lignan analogues (11 and 13-15) were isolated from the rhizome of Acorus tatarinowii Schott. The structures were elucidated via comprehensive spectroscopic analyses, modified Mosher's method, and quantum chemical calculations. Compounds 1-8 were present as enantiomers, and 1-5 were successfully resolved via chiral-phase HPLC. Compounds 1a/1b were the first cases of asarone-derived phenylpropanoids with an isopropyl C-3 side-chain tethered to a benzene core from nature. Hypoglycemic, antioxidant, and AChE inhibitory activities of 1-15 were assessed by the α-glucosidase inhibitory, ORAC, DPPH radical scavenging, and AChE inhibitory assays, respectively. All compounds except 3a showed α-glucosidase inhibitory activity. Compound 3b has the highest α-glucosidase inhibitory effect with an IC50 of 80.6 μM (positive drug acarbose IC50 of 442.4 μM). In the antioxidant assays, compounds 13-15 exhibited ORAC and DPPH radical scavenging activities. The results of the AChE inhibitory assay indicated that all compounds exhibited weak AChE inhibitory activities.
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Affiliation(s)
- En Gao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Zheng-Qun Zhou
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Jian Zou
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Yang Yu
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Xiao-Lin Feng
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Guo-Dong Chen
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Rong-Rong He
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Xin-Sheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
| | - Hao Gao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, and ‡Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University , Guangzhou 510632, People's Republic of China
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17
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Abstract
γ-Butenolides, γ-butyrolactones, and derivatives, especially in enantiomerically pure form, constitute the structural core of numerous natural products which display an impressive range of biological activities which are important for the development of novel physiological and therapeutic agents. Furthermore, optically active γ-butenolides and γ-butyrolactones serve also as a prominent class of chiral building blocks for the synthesis of diverse biological active compounds and complex molecules. Taking into account the varying biological activity profiles and wide-ranging structural diversity of the optically active γ-butenolide or γ-butyrolactone structure, the development of asymmetric synthetic strategies for assembling such challenging scaffolds has attracted major attention from synthetic chemists in the past decade. This review offers an overview of the different enantioselective synthesis of γ-butenolides and γ-butyrolactones which employ catalytic amounts of metal complexes or organocatalysts, with emphasis focused on the mechanistic issues that account for the observed stereocontrol of the representative reactions, as well as practical applications and synthetic potentials.
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Affiliation(s)
- Bin Mao
- Stratingh Institute for Chemistry, University of Groningen , Nijenborg 4, 9747 AG Groningen, The Netherlands.,National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology , Hangzhou 310014, P. R. China
| | - Martín Fañanás-Mastral
- Stratingh Institute for Chemistry, University of Groningen , Nijenborg 4, 9747 AG Groningen, The Netherlands.,Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela , Jenaro de la Fuente s/n, 15782 Santiago de Compostela, Spain
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen , Nijenborg 4, 9747 AG Groningen, The Netherlands
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18
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First chemo-enzymatic synthesis of the ( R)-Taniguchi lactone and substrate profiles of CAMO and OTEMO, two new Baeyer-Villiger monooxygenases. MONATSHEFTE FUR CHEMIE 2016; 148:157-165. [PMID: 28127101 PMCID: PMC5225235 DOI: 10.1007/s00706-016-1873-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 11/06/2016] [Indexed: 10/31/2022]
Abstract
ABSTRACT This study investigates the substrate profile of cycloalkanone monooxygenase and 2-oxo-Δ3-4,5,5-trimethylcyclopentenylacetyl-coenzyme A monooxygenase, two recently discovered enzymes of the Baeyer-Villiger monooxygenase family, used as whole-cell biocatalysts. Biooxidations of a diverse set of ketones were performed on analytical scale: desymmetrization of substituted prochiral cyclobutanones and cyclohexanones, regiodivergent oxidation of terpenones and bicyclic ketones, as well as kinetic resolution of racemic cycloketones. We demonstrated the applicability of the title enzymes in the enantioselective synthesis of (R)-(-)-Taniguchi lactone, a building block for the preparation of various natural product analogs such as ent-quinine. GRAPHICAL ABSTRACT
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19
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Chen ZS, Huang XY, Gao JM, Ji K. Relay Rh(II)/Pd(0) Dual Catalysis: Selective Construction of Cyclic All-Quaternary Carbon Centers. Org Lett 2016; 18:5876-5879. [DOI: 10.1021/acs.orglett.6b02958] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zi-Sheng Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, PR China
| | - Xiao-Yan Huang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, PR China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, PR China
| | - Kegong Ji
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, PR China
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20
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Peng Y, Xiao J, Xu XB, Duan SM, Ren L, Shao YL, Wang YW. Stereospecific Synthesis of Tetrahydronaphtho[2,3-b]furans Enabled by a Nickel-Promoted Tandem Reductive Cyclization. Org Lett 2016; 18:5170-5173. [DOI: 10.1021/acs.orglett.6b02665] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Peng
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Jian Xiao
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiao-Bo Xu
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Shu-Ming Duan
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Li Ren
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Yong-Liang Shao
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Ya-Wen Wang
- State Key Laboratory of Applied
Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
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21
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Shih JL, Chen PA, May JA. The synthesis of functionalized bridged polycycles via C-H bond insertion. Beilstein J Org Chem 2016; 12:985-99. [PMID: 27340489 PMCID: PMC4902037 DOI: 10.3762/bjoc.12.97] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 04/28/2016] [Indexed: 11/23/2022] Open
Abstract
This review presents examples from the chemical literature of syntheses of bridged-polycyclic products via C–H bond insertion by carbenes and nitrenes. Applications to natural product synthesis, a description of the essential elements in substrate-controlled reactions, and mechanistic details of transformations are presented. Overall, these transformations allow the construction of important ring systems rapidly and efficiently, though additional catalyst development is needed.
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Affiliation(s)
- Jiun-Le Shih
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Bldg. Room 112, Houston, TX 77204-5003, United States
| | - Po-An Chen
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Bldg. Room 112, Houston, TX 77204-5003, United States
| | - Jeremy A May
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Fleming Bldg. Room 112, Houston, TX 77204-5003, United States
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22
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Sun JS, Liu H, Guo XH, Liao JX. The chemical synthesis of aryltetralin glycosides. Org Biomol Chem 2016; 14:1188-200. [PMID: 26645095 DOI: 10.1039/c5ob02188j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Led by etoposide and teniposide, the synthesis of aryltetralin glycosides has been experiencing flourishing development in the past five decades. Herein, a review focusing on the total synthesis of aryltetralin glycosides is provided. The main body of this review is composed of two parts, one is the enantioselective synthesis of aryltetralin derivatives and the other one is the construction of key glycosidic linkages. In each part the contents are organised based on the different strategies or protocols applied in the original documents. The total synthesis of aryltetralin glycosides represents the developing direction of this field, and sooner or later will replace the currently applied semi-total synthesis method, using the aglycon residue acquired directly from natural sources. This account provides a comprehensive and deep insight into the field of aryltetralin glycoside synthesis for chemists who have the intention of committing themselves to the development of aryltetralin glycoside medicine.
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Affiliation(s)
- Jian-Song Sun
- The National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China.
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23
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Wu J, Lu C, Li X, Fang H, Wan W, Yang Q, Sun X, Wang M, Hu X, Chen CYO, Wei X. Synthesis and Biological Evaluation of Novel Gigantol Derivatives as Potential Agents in Prevention of Diabetic Cataract. PLoS One 2015; 10:e0141092. [PMID: 26517726 PMCID: PMC4627826 DOI: 10.1371/journal.pone.0141092] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 10/05/2015] [Indexed: 11/25/2022] Open
Abstract
As a continuation of our efforts directed towards the development of natural anti-diabetic cataract agents, gigantol was isolated from Herba dendrobii and was found to inhibit both aldose reductase (AR) and inducible nitric oxide synthase (iNOS) activity, which play a significant role in the development and progression of diabetic cataracts. To improve its bioefficacy and facilitate use as a therapeutic agent, gigantol (compound 14f) and a series of novel analogs were designed and synthesized. Analogs were formulated to have different substituents on the phenyl ring (compounds 4, 5, 8, 14a-e), substitute the phenyl ring with a larger steric hindrance ring (compounds 10, 17c) or modify the carbon chain (compounds 17a, 17b, 21, 23, 25). All of the analogs were tested for their effect on AR and iNOS activities and on D-galactose-induced apoptosis in cultured human lens epithelial cells. Compounds 5, 10, 14a, 14b, 14d, 14e, 14f, 17b, 17c, 23, and 25 inhibited AR activity, with IC50 values ranging from 5.02 to 288.8 μM. Compounds 5, 10, 14b, and 14f inhibited iNOS activity with IC50 ranging from 432.6 to 1188.7 μM. Compounds 5, 8, 10, 14b, 14f, and 17c protected the cells from D-galactose induced apoptosis with viability ranging from 55.2 to 76.26%. Of gigantol and its analogs, compound 10 showed the greatest bioefficacy and is warranted to be developed as a therapeutic agent for diabetic cataracts.
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Affiliation(s)
- Jie Wu
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Chuanjun Lu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
- Institute of Drug Synthesis and Pharmaceutical Processing, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xue Li
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Hua Fang
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Wencheng Wan
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Qiaohong Yang
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xiaosheng Sun
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Meiling Wang
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xiaohong Hu
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - C.-Y. Oliver Chen
- Antioxidants Research Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, 02111, United States of America
| | - Xiaoyong Wei
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
- Antioxidants Research Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, 02111, United States of America
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24
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Zhou QL, Wang HJ, Tang P, Song H, Qin Y. Total Synthesis of Lignan Lactone (-)-Hinokinin. NATURAL PRODUCTS AND BIOPROSPECTING 2015; 5:255-261. [PMID: 26458924 PMCID: PMC4607678 DOI: 10.1007/s13659-015-0073-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 09/22/2015] [Indexed: 06/05/2023]
Abstract
This research paper is aimed at studying the total synthesis of pharmacologically active lignan (-)-hinokinin. The synthesis features a three-step cascade reaction involving highly stereoselective Michael addition, anion-oxidative hydroxylation, and oxygen anion cyclization to construct the pivotal butyrolactonimidate intermediate.
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Affiliation(s)
- Qi-Long Zhou
- Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, China
| | - Hui-Jing Wang
- Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, China
| | - Pei Tang
- Innovative Drug Research Centre, Chongqing University, Chongqing, 401331, China.
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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25
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Gualandi A, Marchini M, Mengozzi L, Natali M, Lucarini M, Ceroni P, Cozzi PG. Organocatalytic Enantioselective Alkylation of Aldehydes with [Fe(bpy)3]Br2 Catalyst and Visible Light. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01573] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Andrea Gualandi
- Dipartimento
di Chimica “G. Ciamician” ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Marianna Marchini
- Dipartimento
di Chimica “G. Ciamician” ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Luca Mengozzi
- Dipartimento
di Chimica “G. Ciamician” ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Mirco Natali
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Università di Ferrara, 44121 Ferrara, Italy
- Centro Inter Universitario
per la Conversione Chimica dell’Energia Solare (SOLAR-CHEM), 44121 Ferrara, Italy
| | - Marco Lucarini
- Dipartimento
di Chimica “G. Ciamician” ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Paola Ceroni
- Dipartimento
di Chimica “G. Ciamician” ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
- Centro Inter Universitario
per la Conversione Chimica dell’Energia Solare (SOLAR-CHEM), 44121 Ferrara, Italy
| | - Pier Giorgio Cozzi
- Dipartimento
di Chimica “G. Ciamician” ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
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26
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Ford A, Miel H, Ring A, Slattery CN, Maguire AR, McKervey MA. Modern Organic Synthesis with α-Diazocarbonyl Compounds. Chem Rev 2015; 115:9981-10080. [PMID: 26284754 DOI: 10.1021/acs.chemrev.5b00121] [Citation(s) in RCA: 1085] [Impact Index Per Article: 120.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Hugues Miel
- Almac Discovery Ltd. , David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | | | | | | | - M Anthony McKervey
- Almac Sciences Ltd. , Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
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27
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Wang H, Tang P, Zhou Q, Zhang D, Chen Z, Huang H, Qin Y. One-Pot Synthesis of Multisubstituted Butyrolactonimidates: Total Synthesis of (−)-Nephrosteranic Acid. J Org Chem 2015; 80:2494-502. [PMID: 25671631 DOI: 10.1021/jo5029166] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Huijing Wang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Pei Tang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Qilong Zhou
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Dan Zhang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Zhitao Chen
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Hongxiu Huang
- Key
Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry
of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yong Qin
- Key
Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry
of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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28
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Jeong J, Lee D, Chang S. Copper-catalyzed oxygen atom transfer of N-oxides leading to a facile deoxygenation procedure applicable to both heterocyclic and amine N-oxides. Chem Commun (Camb) 2015; 51:7035-8. [DOI: 10.1039/c5cc01739d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Copper-catalyzed deoxygenation of N-oxides including both heterocyclic and amine derivatives was achieved by the catalytic oxygen atom transfer from N-oxides to in situ generated copper-carbenoid.
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Affiliation(s)
- Jisu Jeong
- Department of Chemistry
- Korea Advanced Institute of Science & Technology (KAIST)
- Daejeon 305-701
- Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Donggun Lee
- Department of Chemistry
- Korea Advanced Institute of Science & Technology (KAIST)
- Daejeon 305-701
- Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Sukbok Chang
- Department of Chemistry
- Korea Advanced Institute of Science & Technology (KAIST)
- Daejeon 305-701
- Korea
- Center for Catalytic Hydrocarbon Functionalizations
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29
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Jansone-Popova S, Le PQ, May JA. Carbene cascades for the formation of bridged polycyclic rings. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.060] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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30
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The enone motif of (+)-grandifloracin is not essential for ‘anti-austerity’ antiproliferative activity. Bioorg Med Chem Lett 2014; 24:2815-9. [DOI: 10.1016/j.bmcl.2014.04.111] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 04/25/2014] [Accepted: 04/27/2014] [Indexed: 02/06/2023]
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31
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Ferrocene phosphane–carbene ligands in Cu-catalyzed enantioselective 1,4-additions of Grignard reagents to α,β-unsaturated carbonyl compounds. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.03.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Smith SM, Hoang GL, Pal R, Bani Khaled MO, Pelter LSW, Zeng XC, Takacs JM. γ-Selective directed catalytic asymmetric hydroboration of 1,1-disubstituted alkenes. Chem Commun (Camb) 2012; 48:12180-2. [PMID: 23145431 PMCID: PMC3601746 DOI: 10.1039/c2cc36199j] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Directed catalytic asymmetric hydroborations of 1,1-disubstituted alkenes afford γ-dioxaborato amides and esters in high enantiomeric purity (90-95% ee).
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Affiliation(s)
- Sean M. Smith
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA, Fax: (+) 402 472-9402; Tel: (+) 402 472-6232
| | - Gia L. Hoang
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA, Fax: (+) 402 472-9402; Tel: (+) 402 472-6232
| | - Rhitankar Pal
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA, Fax: (+) 402 472-9402; Tel: (+) 402 472-6232
| | - Mohammad O. Bani Khaled
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA, Fax: (+) 402 472-9402; Tel: (+) 402 472-6232
| | - Liberty S. W. Pelter
- Department of Chemistry and Physics, Purdue University Calumet, Hammond, Indiana, USA
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA, Fax: (+) 402 472-9402; Tel: (+) 402 472-6232
| | - James M. Takacs
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA, Fax: (+) 402 472-9402; Tel: (+) 402 472-6232
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33
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Phenolic constituents from the rhizomes of Acorus gramineus and their biological evaluation on antitumor and anti-inflammatory activities. Bioorg Med Chem Lett 2012; 22:6155-9. [DOI: 10.1016/j.bmcl.2012.08.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 07/11/2012] [Accepted: 08/02/2012] [Indexed: 11/21/2022]
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34
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Warner MC, Nagendiran A, Bogár K, Bäckvall JE. Enantioselective Route to Ketones and Lactones from Exocyclic Allylic Alcohols via Metal and Enzyme Catalysis. Org Lett 2012; 14:5094-7. [DOI: 10.1021/ol302358j] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Madeleine C. Warner
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Anuja Nagendiran
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Krisztián Bogár
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Jan-E. Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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35
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Funktionalisierung von C-H-Bindungen: neue Synthesemethoden für Naturstoffe und Pharmazeutika. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201666] [Citation(s) in RCA: 756] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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36
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Yamaguchi J, Yamaguchi AD, Itami K. CH Bond Functionalization: Emerging Synthetic Tools for Natural Products and Pharmaceuticals. Angew Chem Int Ed Engl 2012; 51:8960-9009. [DOI: 10.1002/anie.201201666] [Citation(s) in RCA: 2423] [Impact Index Per Article: 201.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Indexed: 01/04/2023]
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37
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Yamada KI, Konishi T, Nakano M, Fujii S, Cadou R, Yamamoto Y, Tomioka K. Radical One-Pot α,β-Dual and β-Mono-Oxymethylation of Alkylidenemalonate. J Org Chem 2012; 77:5775-80. [DOI: 10.1021/jo300944f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ken-ichi Yamada
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo,
Kyoto 606-8501, Japan
| | - Takehito Konishi
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo,
Kyoto 606-8501, Japan
| | - Mayu Nakano
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo,
Kyoto 606-8501, Japan
| | - Shintaro Fujii
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo,
Kyoto 606-8501, Japan
| | - Romain Cadou
- Graduate School of Pharmaceutical
Sciences, Kyoto University, Yoshida, Sakyo,
Kyoto 606-8501, Japan
| | - Yasutomo Yamamoto
- Faculty
of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kodo,
Kyotanabe 610-0395, Japan
| | - Kiyoshi Tomioka
- Faculty
of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kodo,
Kyotanabe 610-0395, Japan
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38
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Doyle MP, Ratnikov M, Liu Y. Intramolecular catalytic asymmetric carbon–hydrogen insertion reactions. Synthetic advantages in total synthesis in comparison with alternative approaches. Org Biomol Chem 2011; 9:4007-16. [DOI: 10.1039/c0ob00698j] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Ito M, Shiibashi A, Ikariya T. Regioselective lactonization of unsymmetrical 1,4-diols: an efficient access to lactone lignans. Chem Commun (Camb) 2011; 47:2134-6. [DOI: 10.1039/c0cc04926c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Slattery CN, Ford A, Maguire AR. Catalytic asymmetric C–H insertion reactions of α-diazocarbonyl compounds. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.05.073] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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41
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Meng J, Jiang T, Aslam Bhatti H, Siddiqui BS, Dixon S, Kilburn JD. Synthesis of dihydrodehydrodiconiferyl alcohol: the revised structure of lawsonicin. Org Biomol Chem 2010; 8:107-13. [DOI: 10.1039/b918179b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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He H, Dai LX, You SL. Intramolecular Michael addition reaction for the synthesis of benzylbutyrolactones. Org Biomol Chem 2010; 8:3207-10. [DOI: 10.1039/b924770j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Hajra S, Giri AK, Hazra S. Asymmetric syntheses of (-)-enterolactone and (7'R)-7'-hydroxyenterolactone via organocatalyzed aldol reaction. J Org Chem 2009; 74:7978-81. [PMID: 19775122 DOI: 10.1021/jo900810a] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Short syntheses of (-)-enterolactone (1a) and (7'R)-7'-hydroxyenterolactone (1b) have been achieved utilizing organocatalyzed asymmetric cross-aldol reaction of aldehydes 2 and 3 and base-mediated alkylation of lactones 5 and 4.
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Affiliation(s)
- Saumen Hajra
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
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44
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Doyle MP, Duffy R, Ratnikov M, Zhou L. Catalytic Carbene Insertion into C−H Bonds. Chem Rev 2009; 110:704-24. [DOI: 10.1021/cr900239n] [Citation(s) in RCA: 1392] [Impact Index Per Article: 92.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael P. Doyle
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Richard Duffy
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Maxim Ratnikov
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Lei Zhou
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
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45
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Giri R, Shi BF, Engle KM, Maugel N, Yu JQ. Transition metal-catalyzed C–H activation reactions: diastereoselectivity and enantioselectivity. Chem Soc Rev 2009; 38:3242-72. [DOI: 10.1039/b816707a] [Citation(s) in RCA: 1360] [Impact Index Per Article: 90.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Kim SG. Organocatalytic asymmetric 1,4-addition of organoboronic acids to γ-hydroxy α,β-unsaturated aldehyde: facile synthesis of chiral β-substituted γ-lactones. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.08.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Hajra S, Giri AK. Organocatalytic and enantioselective synthesis of beta-(hydroxyalkyl)-gamma-butyrolactones. J Org Chem 2008; 73:3935-7. [PMID: 18396909 DOI: 10.1021/jo8005733] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Organocatalytic cross-aldol reaction of methyl 4-oxobutyrate (2) and a variety of aldehydes 3 followed by reduction with NaBH(4) has provided a one-pot, general and efficient method for the synthesis of 4-(hydroxyalkyl)-gamma-butyrolactones 1 with high diastereo-(dr > 24:1) and enantioselectivity (ee > 99%).
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Affiliation(s)
- Saumen Hajra
- Department of Chemistry, Indian Institute of Technology, Kharagpur, India.
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48
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Abstract
The design and use of chiral dirhodium(II) paddlewheel complexes as catalysts for asymmetric metal carbenoid and metal nitrenoid reactions, and as Lewis acids have become areas of considerable interest during the past two decades. The metal carbenoid chemistry is especially versatile, encompassing transformations such as C-H insertions, cyclopropanations and ylide formation. A number of different classes of dirhodium(II) catalysts have been found to be broadly effective in this chemistry. This review will highlight that many of these catalysts have higher symmetry than the individual chiral ligands themselves. An introduction of theoretical aspects concerning the structure and symmetry of chiral dirhodium(II) complexes will be given followed by an overview of the major classes of catalysts developed to date. Some representative examples of the synthetic potential of these catalysts will also be discussed.
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Affiliation(s)
- Jørn Hansen
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York, 14260-3000
| | - Huw M. L. Davies
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York, 14260-3000
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49
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Rial DV, Bianchi DA, Kapitanova P, Lengar A, van Beilen JB, Mihovilovic MD. Stereoselective Desymmetrizations by Recombinant Whole Cells Expressing the Baeyer–Villiger Monooxygenase fromXanthobacter sp. ZL5: A New Biocatalyst Accepting Structurally Demanding Substrates. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700872] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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50
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Affiliation(s)
- Harun M. Mbuvi
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - L. Keith Woo
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
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