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Kanti Das K, Kumar P, Ghorai D, Mondal B, Panda S. Organoboron Compounds Towards Asymmetric Pericyclic Reaction; Exploitation to Bioactive Molecule Synthesis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Parveen Kumar
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Debraj Ghorai
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Buddhadeb Mondal
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Santanu Panda
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
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2
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Li M, Zhou ZP, Yuan ZF, Zhao QS. Vibsane-type Diterpenoids: Structures, Derivatives, Bioactivities, and Synthesis. Chem Biodivers 2021; 19:e202100861. [PMID: 34860463 DOI: 10.1002/cbdv.202100861] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 11/30/2021] [Indexed: 11/06/2022]
Abstract
Vibsane-type diterpenoids isolated from the genus Viburnum , are rare 6-11 membered ring polysubstituted macrocyclic diterpenoids. Since the first report of vibsane from V. odoratissimum in 1980, they have attracted the attention of scientists due to their complex structures, excellent biological activities, and great synthetic challenges. Recently, there are some notable research achievements on the discovery, synthesis, structural modification, and pharmacological mechanism of vibsane-type diterpenoids. Therefore, we will focus on these aspects to review important achievements of vibsane diterpenoids between 1980-2021.
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Affiliation(s)
- Meng Li
- Kunming Institute of Botany Chinese Academy of Sciences, State Key Laboratory of Phytochemistry and Plant Resources in West China, 132 Lanhei Road, Heilongtan, Kunming 650201, kunming, CHINA
| | - Zhi-Ping Zhou
- Kunming Institute of Botany Chinese Academy of Sciences, State Key Laboratory of Phytochemistry and Plant Resources in West China, 132 Lanhei Road, Heilongtan, Kunming 650201, kunming, CHINA
| | - Zai-Feng Yuan
- Kunming Institute of Botany Chinese Academy of Sciences, State Key Laboratory of Phytochemistry and Plant Resources in West China, 132 Lanhei Road, Heilongtan, Kunming 650201, kunming, CHINA
| | - Qin-Shi Zhao
- Kunming Institute of Botany, Chinese Academy of Sciences, State Key Laboratory of Phytochemistry and Plant Resources in West China, 132 Lanhei Road, Heilongtan, Kunming 650201, Not Available, 650201, Kunming, CHINA
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3
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Wang RB, Ma SG, Jamieson CS, Gao RM, Liu YB, Li Y, Wang XJ, Li YH, Houk KN, Qu J, Yu SS. Library construction of stereochemically diverse isomers of spirooliganin: their total synthesis and antiviral activity. Chem Sci 2021; 12:7003-7011. [PMID: 34123328 PMCID: PMC8153216 DOI: 10.1039/d1sc01277k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The construction of libraries of stereoisomers of natural products serves as an important approach to investigating the correlation between the stereostructure and biological activity. However, the total synthesis and isomerzation of polycyclic scaffolds with multiple chrial centers are rare. Spirooliganin (1), a new skeleton natural product isolated from the plant Illicium oligandrum, was structurally characterized by comprehensive analysis of NMR spectroscopic data and ECD which revealed an unprecedented 5-6-6-6-7 polycyclic framework with six chiral centers. Here we report a 17-step total synthesis to prepare a library of stereochemically diverse isomers of spirooliganin, including 16 diastereoisomers and 16 regioisomers. In addition to a regioselective hetero-Diels-Alder cycloaddition, the synthetic strategy involves a photo-induced stereoselective Diels-Alder reaction, which gives only the abnormal trans-fused product as rationalized by density functional theory calculations. Preliminary biological evaluation showed that spirooliganin and regioisomers 39 exhibited potent inhibition of Coxsackievirus B3. It also revealed the pharmacophore effect of the D-ring (16R,18R,24R, and 26R) for their antiviral activities.
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Affiliation(s)
- Ru-Bing Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College No.1 Xian Nong Tan Street Beijing 100050 People's Republic of China
| | - Shuang-Gang Ma
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College No.1 Xian Nong Tan Street Beijing 100050 People's Republic of China
| | - Cooper S Jamieson
- Department of Chemistry and Biochemistry, University of California Los Angeles California 90095 USA
| | - Rong-Mei Gao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College No. 1 Tian Tan Xi Li Beijing 100050 People's Republic of China
| | - Yun-Bao Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College No.1 Xian Nong Tan Street Beijing 100050 People's Republic of China
| | - Yong Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College No.1 Xian Nong Tan Street Beijing 100050 People's Republic of China
| | - Xiao-Jing Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College No.1 Xian Nong Tan Street Beijing 100050 People's Republic of China
| | - Yu-Huan Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College No. 1 Tian Tan Xi Li Beijing 100050 People's Republic of China
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California Los Angeles California 90095 USA
| | - Jing Qu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College No.1 Xian Nong Tan Street Beijing 100050 People's Republic of China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College No.1 Xian Nong Tan Street Beijing 100050 People's Republic of China
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Caprioglio D, Salamone S, Pollastro F, Minassi A. Biomimetic Approaches to the Synthesis of Natural Disesquiterpenoids: An Update. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10040677. [PMID: 33916090 PMCID: PMC8065479 DOI: 10.3390/plants10040677] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 03/30/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Natural disesquiterpenoids represent a small group of secondary metabolites characterized by complex molecular scaffolds and interesting pharmacological profiles. In the last decade, more than 400 new disesquiterpenoids have been discovered and fully characterized, pointing out once more the "magic touch" of nature in the design of new compounds. The perfect blend of complex and unique architectures and biological activity has made sesquiterpene dimers an attractive and challenging synthetic target, inspiring organic chemists to find new and biomimetic approaches to replicate the efficiency and the selectivity of natural processes under laboratory conditions. In this work, we present a review covering the literature from 2010 to 2020 reporting all the efforts made in the total synthesis of complex natural disesquiterpenoids.
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Affiliation(s)
- Diego Caprioglio
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, L.go Donegani 2/3, 28100 Novara, Italy; (D.C.); (S.S.); (F.P.)
| | - Stefano Salamone
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, L.go Donegani 2/3, 28100 Novara, Italy; (D.C.); (S.S.); (F.P.)
| | - Federica Pollastro
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, L.go Donegani 2/3, 28100 Novara, Italy; (D.C.); (S.S.); (F.P.)
- PlantaChem srls, via Canobio 4/6, 28100 Novara, Italy
| | - Alberto Minassi
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, L.go Donegani 2/3, 28100 Novara, Italy; (D.C.); (S.S.); (F.P.)
- PlantaChem srls, via Canobio 4/6, 28100 Novara, Italy
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5
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Williams CM, Dallaston MA. The Future of Retrosynthesis and Synthetic Planning: Algorithmic, Humanistic or the Interplay? Aust J Chem 2021. [DOI: 10.1071/ch20371] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The practice of deploying and teaching retrosynthesis is on the cusp of considerable change, which in turn forces practitioners and educators to contemplate whether this impending change will advance or erode the efficiency and elegance of organic synthesis in the future. A short treatise is presented herein that covers the concept of retrosynthesis, along with exemplified methods and theories, and an attempt to comprehend the impact of artificial intelligence in an era when freely and commercially available retrosynthetic and forward synthesis planning programs are increasingly prevalent. Will the computer ever compete with human retrosynthetic design and the art of organic synthesis?
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6
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Fang Y, Zhang H, Huang Z, Scinto SL, Yang JC, Am Ende CW, Dmitrenko O, Johnson DS, Fox JM. Photochemical syntheses, transformations, and bioorthogonal chemistry of trans-cycloheptene and sila trans-cycloheptene Ag(i) complexes. Chem Sci 2018; 9:1953-1963. [PMID: 29675242 PMCID: PMC5892336 DOI: 10.1039/c7sc04773h] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Accepted: 01/05/2018] [Indexed: 11/21/2022] Open
Abstract
A photochemical synthesis of AgNO3 complexes of trans-cycloheptene (TCH) and trans-1-sila-4-cycloheptene (Si-TCH) derivatives is described. A low temperature flow photoreactor was designed to enable the synthesis of carbocyclic TCH derivatives due to their thermal sensitivity in the absence of metal coordination. Unlike the free carbocycles, TCH·AgNO3 complexes can be handled at rt and stored for weeks in the freezer (-18 °C). Si-TCH·AgNO3 complexes are especially robust, and are bench stable for days at rt, and for months in the freezer. X-ray crystallography was used to characterize a Si-TCH·AgNO3 complex for the first time. With decomplexation of AgNO3in situ, metal-free TCO and Si-TCH derivatives can engage in a range of cycloaddition reactions as well as dihydroxylation reactions. Computation was used to predict that Si-TCH would engage in bioorthogonal reactions that are more rapid than the most reactive trans-cyclooctenes. Metal-free Si-TCH derivatives were shown to display good stability in solution, and to engage in the fastest bioorthogonal reaction reported to date (k2 1.14 × 107 M-1 s-1 in 9 : 1 H2O : MeOH). Utility in bioorthogonal protein labeling in live cells is described, including labeling of GFP with an unnatural tetrazine-containing amino acid. The reactivity and specificity of the Si-TCH reagents with tetrazines in live mammalian cells was also evaluated using the HaloTag platform. The cell labeling experiments show that Si-TCH derivatives are best suited as probe molecules in the cellular environment.
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Affiliation(s)
- Yinzhi Fang
- Brown Laboratories , Department of Chemistry and Biochemistry , University of Delaware , Newark , DE 19716 , USA .
| | - Han Zhang
- Brown Laboratories , Department of Chemistry and Biochemistry , University of Delaware , Newark , DE 19716 , USA .
| | - Zhen Huang
- Pfizer Worldwide Research and Development , Cambridge , Massachusetts 02139 , USA
| | - Samuel L Scinto
- Brown Laboratories , Department of Chemistry and Biochemistry , University of Delaware , Newark , DE 19716 , USA .
| | - Jeffrey C Yang
- Pfizer Worldwide Research and Development , Cambridge , Massachusetts 02139 , USA
| | | | - Olga Dmitrenko
- Brown Laboratories , Department of Chemistry and Biochemistry , University of Delaware , Newark , DE 19716 , USA .
| | - Douglas S Johnson
- Pfizer Worldwide Research and Development , Cambridge , Massachusetts 02139 , USA
| | - Joseph M Fox
- Brown Laboratories , Department of Chemistry and Biochemistry , University of Delaware , Newark , DE 19716 , USA .
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7
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Yin Z, He Y, Chiu P. Application of (4+3) cycloaddition strategies in the synthesis of natural products. Chem Soc Rev 2018; 47:8881-8924. [DOI: 10.1039/c8cs00532j] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review summarizes the applications of (4+3) cycloadditions, both classical and formal, in the syntheses of natural products in the last two decades.
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Affiliation(s)
- Zengsheng Yin
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- P. R. China
| | - Yun He
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- P. R. China
| | - Pauline Chiu
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- P. R. China
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8
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Kärkäs M, Porco JA, Stephenson CRJ. Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. Chem Rev 2016; 116:9683-747. [PMID: 27120289 PMCID: PMC5025835 DOI: 10.1021/acs.chemrev.5b00760] [Citation(s) in RCA: 666] [Impact Index Per Article: 83.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Indexed: 01/29/2023]
Abstract
The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the involvement of electronically excited states, generated upon absorption of photons. This produces transient reactive intermediates and significantly alters the reactivity of a chemical compound. The input of energy provided by light thus offers a means to produce strained and unique target compounds that cannot be assembled using thermal protocols. This review aims at highlighting photochemical transformations as a tool for rapidly accessing structurally and stereochemically diverse scaffolds. Synthetic designs based on photochemical transformations have the potential to afford complex polycyclic carbon skeletons with impressive efficiency, which are of high value in total synthesis.
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Affiliation(s)
- Markus
D. Kärkäs
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - John A. Porco
- Department
of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Corey R. J. Stephenson
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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9
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Nguyen TN, Nguyen TS, May JA. Brønsted Acid Catalyzed Homoconjugate Addition of Organotrifluoroborates to Arylated Cyclopropyl Ketones. Org Lett 2016; 18:3786-9. [DOI: 10.1021/acs.orglett.6b01795] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Truong N. Nguyen
- Department
of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building
Room 112, Houston, Texas 77204-5003, United States
| | - Thien S. Nguyen
- Department
of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building
Room 112, Houston, Texas 77204-5003, United States
| | - Jeremy A. May
- Department
of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building
Room 112, Houston, Texas 77204-5003, United States
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10
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Shang H, Liu J, Bao R, Cao Y, Zhao K, Xiao C, Zhou B, Hu L, Tang Y. Biomimetic Synthesis: Discovery of Xanthanolide Dimers. Angew Chem Int Ed Engl 2014; 53:14494-8. [DOI: 10.1002/anie.201406461] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 10/01/2014] [Indexed: 11/07/2022]
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11
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Shang H, Liu J, Bao R, Cao Y, Zhao K, Xiao C, Zhou B, Hu L, Tang Y. Biomimetic Synthesis: Discovery of Xanthanolide Dimers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406461] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Krüger S, Gaich T. Recent applications of the divinylcyclopropane-cycloheptadiene rearrangement in organic synthesis. Beilstein J Org Chem 2014; 10:163-93. [PMID: 24605138 PMCID: PMC3943923 DOI: 10.3762/bjoc.10.14] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 11/11/2013] [Indexed: 12/03/2022] Open
Abstract
This review summarizes the application of the divinylcyclopropane–cycloheptadiene rearrangement in synthetic organic chemistry. A brief overview of the new mechanistic insights concerning the title reaction is provided as well as a condensed account on the biological relevance of the topic. Heteroatom variants of this rearrangement are covered briefly.
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Affiliation(s)
- Sebastian Krüger
- Institut für Organische Chemie, Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
| | - Tanja Gaich
- Institut für Organische Chemie, Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
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13
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The Synthesis of Seven-Membered Rings in Natural Products. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-444-63281-4.00014-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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14
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Honey MA, Yamashita Y, Kobayashi S. A cooperative water effect in proazaphosphatrane-catalysed heterocycle synthesis. Chem Commun (Camb) 2014; 50:3288-91. [DOI: 10.1039/c3cc49808e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water activated isocyanide is deprotonated by the organosuperbase proazaphosphatrane; no deprotonation of water could be observed.
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Affiliation(s)
- Mark A. Honey
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku, Japan
| | - Yasuhiro Yamashita
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku, Japan
| | - Shū Kobayashi
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku, Japan
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15
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Mak JYW, Williams CM. Key achievements in the total synthesis of vibsane-type diterpenoids. Nat Prod Rep 2012; 29:440-8. [DOI: 10.1039/c2np00067a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Abstract
A triple cascade process was developed for the rapid synthesis of polycyclic benzo-fused dihydrofurans. The first step is a rhodium-catalyzed cyclopropanation of α-aryldiazoketones with alkenes. This is followed by a silver-catalyzed ring expansion to dihydrofurans, which then undergo a gold-catalyzed cyclization to form benzo-fused dihydrofurans.
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Lippert AR, Naganawa A, Keleshian VL, Bode JW. Synthesis of phototrappable shape-shifting molecules for adaptive guest binding. J Am Chem Soc 2011; 132:15790-9. [PMID: 20945902 DOI: 10.1021/ja107314p] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We have designed and synthesized oligosubstituted bullvalenes 1 and 2 as adaptive molecules that can change their shapes in order to bind tightly to a suitable guest. By incorporation of a photolabile o-nitroveratryloxycarbonate (NVOC) group into bullvalenes 1 and 2, tightly binding species can be selectively isolated from a population of hundreds of interconverting structural isomers. Spontaneous strain-assisted Cope rearrangements allow these shape-shifting molecules to exist in a dynamic equilibrium of configurationally distinct valence isomers, as revealed by dynamic NMR and HPLC studies. When NVOC bullvalenes 1 and 2 were exposed to UV light, the cleavage of the NVOC group resulted in a mixture of static isomers of the corresponding bullvalone. Binding studies of NVOC bisporphyrin bullvalene 1 demonstrated that the dynamic isomeric equilibrium shifted in the presence of C(60), favoring configurations with more favorable binding affinities. Irradiation of a mixture of 1 and C(60) with UV light and isolation of the major static isomer yielded an isomer of bisporphyrin bullvalone with a binding affinity for C(60) that was ∼2 times larger than that of the nonadapted isomer bisporphyrin bullvalone 41.
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Affiliation(s)
- Alexander R Lippert
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Kubo M, Kishimoto Y, Harada K, Hioki H, Fukuyama Y. NGF-potentiating vibsane-type diterpenoids from Viburnum sieboldii. Bioorg Med Chem Lett 2010; 20:2566-71. [DOI: 10.1016/j.bmcl.2010.02.085] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 02/18/2010] [Accepted: 02/22/2010] [Indexed: 11/16/2022]
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19
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Fukuyama Y, Kubo M, Esumi T, Harada K, Hioki H. Chemistry and Biological Activities of Vibsane-Type Diterpenoids. HETEROCYCLES 2010. [DOI: 10.3987/rev-10-671] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Schwartz BD, Denton JR, Bernhardt PV, Davies HML, Williams CM. Towards the Total Synthesis of 3-Hydroxyvibsanin E. SYNTHESIS-STUTTGART 2009; 2009:2840-2846. [PMID: 20725592 PMCID: PMC2921946 DOI: 10.1055/s-0029-1216912] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Brett D. Schwartz
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, 4072, Queensland, Australia
| | - Justin R. Denton
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, USA
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, 4072, Queensland, Australia
| | - Huw M. L. Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
| | - Craig M. Williams
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, 4072, Queensland, Australia
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Hansen J, Autschbach J, Davies HML. Computational Study on the Selectivity of Donor/Acceptor-Substituted Rhodium Carbenoids. J Org Chem 2009; 74:6555-63. [DOI: 10.1021/jo9009968] [Citation(s) in RCA: 155] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jørn Hansen
- Department of Chemistry, Emory University, 440 Atwood Hall, 1515 Dickey Drive, Atlanta, Georgia 30322
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260
| | - Huw M. L. Davies
- Department of Chemistry, Emory University, 440 Atwood Hall, 1515 Dickey Drive, Atlanta, Georgia 30322
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22
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Schwartz BD, Denton JR, Lian Y, Davies HML, Williams CM. Asymmetric [4 + 3] cycloadditions between vinylcarbenoids and dienes: application to the total synthesis of the natural product (-)-5-epi-vibsanin E. J Am Chem Soc 2009; 131:8329-32. [PMID: 19445507 PMCID: PMC2717789 DOI: 10.1021/ja9019484] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The total synthesis of (-)-5-epi-vibsanin E (2) has been achieved in 18 steps. The synthesis combines the rhodium-catalyzed [4 + 3] cycloaddition between a vinylcarbenoid and a diene to rapidly generate the tricyclic core with an effective end game strategy to introduce the remaining side-chains. The [4 + 3] cycloaddition occurs by a cyclopropanation to form a divinylcyclopropane followed by a Cope rearrangement to form a cycloheptadiene. The quaternary stereogenic center generated in the process can be obtained with high asymmetric induction when the reaction is catalyzed by the chiral dirhodium complex, Rh(2)(S-PTAD)(4).
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Affiliation(s)
- Brett D. Schwartz
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072, Queensland, Australia
| | - Justin R. Denton
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
| | - Yajing Lian
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA
| | - Huw M. L. Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA
| | - Craig M. Williams
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072, Queensland, Australia
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23
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Ichinose M, Suematsu H, Katsuki T. Efficient Construction of α-Spirocyclopropyl Lactones: Iridium-Salen-Catalyzed Asymmetric Cyclopropanation. Angew Chem Int Ed Engl 2009; 48:3121-3. [DOI: 10.1002/anie.200805527] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ichinose M, Suematsu H, Katsuki T. Efficient Construction of α-Spirocyclopropyl Lactones: Iridium-Salen-Catalyzed Asymmetric Cyclopropanation. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805527] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Denton JR, Davies HML. Enantioselective reactions of donor/acceptor carbenoids derived from alpha-aryl-alpha-diazoketones. Org Lett 2009; 11:787-90. [PMID: 19146454 DOI: 10.1021/ol802614j] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of a variety of alpha-aryl-alpha-diazo ketones with activated olefins, catalyzed by the adamantyl glycine-derived dirhodium complex Rh(2)(S-PTAD)(4), generates cyclopropyl ketones with high diastereoselectivity (up to >95:5 dr) and enantioselectivity (up to 98% ee). Intermolecular C-H functionalization of 1,4-cyclohexadiene by means of carbenoid-induced C-H insertion was also possible with this type of carbenoid.
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Affiliation(s)
- Justin R Denton
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
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Schwartz BD, Denton JR, Davies HML, Williams CM. Total Synthesis of (±)-Vibsanin E. Aust J Chem 2009; 62:980-982. [PMID: 21297900 DOI: 10.1071/ch09267] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Vibsanin E (1), a structurally rare complex diterpene, consisting of a compact 3-oxatricyclo[6.3.2.05,10] tridecane core and an unprecedented 3,3-dimethylacroyl enol ester functional group, formulate a considerable synthetic challenge. Williams and Davies failed to independently synthesize this nemesis, however, a ‘two heads are better than one’ approach delivered the first total synthesis of the molecule, since its diamond aniversary isolation.
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Affiliation(s)
- Brett D Schwartz
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, 4072, Queensland, Australia
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Fukuyama Y, Kubo M, Minoshima Y, Arimoto D, Minami H, Harada K, Hioki H. Acetal-Bearing Rearranged Vibsane-Type Diterpenoids from Viburnum awabuki. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(f)74] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Schwartz BD, Williams CM, Bernhardt PV. End game strategies towards the total synthesis of vibsanin E, 3-hydroxyvibsanin E, furanovibsanin A, and 3-O-methylfuranovibsanin A. Beilstein J Org Chem 2008; 4:34. [PMID: 18982074 PMCID: PMC2577281 DOI: 10.3762/bjoc.4.34] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Accepted: 09/18/2008] [Indexed: 11/23/2022] Open
Abstract
End game synthetic strategy studies towards the total synthesis of the vibsanin type diterpenes, vibsanin E, 3-hydroxyvibsanin E, furanovibsanin A, and 3-O-methylfuranovibsanin A are discussed, with focus on construction of the side chain and peripheral functionality associated with this group of natural products is the current focus of this report.
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Affiliation(s)
- Brett D Schwartz
- School of Molecular and Microbial Sciences, University of Queensland, Brisbane, 4072, Queensland, Australia
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Gallen MJ, Williams CM. Towards the Total Synthesis of Spirovibsanin A: Total Synthesis of (±)-5,14-Bis-epi-spirovibsanin A. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800574] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Affiliation(s)
- Annette P.-J. Chen
- School of Molecular and Microbial Sciences, University of Queensland, Brisbane, 4072, Queensland, Australia
| | - Craig M. Williams
- School of Molecular and Microbial Sciences, University of Queensland, Brisbane, 4072, Queensland, Australia
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Exploiting the Anders–Gaßner variant on the Wittig reaction: new methodology for the synthesis of 3,3-dimethylacroyl enol esters. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.068] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Affiliation(s)
- Norbert Hoffmann
- Laboratoire des Réactions Sélectives et Applications, UMR 6519 CNRS et Université de Reims Champagne-Ardenne, UFR Sciences, B.P. 1039, F-51687 Reims, Cedex 02, France
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Affiliation(s)
- Michael J. Gallen
- School of Molecular and Microbial Sciences, University of Queensland, Brisbane 4072, Queensland, Australia
| | - Craig M. Williams
- School of Molecular and Microbial Sciences, University of Queensland, Brisbane 4072, Queensland, Australia
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Affiliation(s)
- Jone Iriondo‐Alberdi
- School of Chemistry, University of Edinburgh, King's Buildings, West Mains Rd, Edinburgh, EH9 3JJ, UK, Fax: +44‐131‐650‐4743
| | - Michael F. Greaney
- School of Chemistry, University of Edinburgh, King's Buildings, West Mains Rd, Edinburgh, EH9 3JJ, UK, Fax: +44‐131‐650‐4743
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Nikolai J, Loe Ø, Dominiak PM, Gerlitz OO, Autschbach J, Davies HML. Mechanistic Studies of UV Assisted [4 + 2] Cycloadditions in Synthetic Efforts toward Vibsanin E. J Am Chem Soc 2007; 129:10763-72. [PMID: 17691775 DOI: 10.1021/ja072090e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Quantum chemical DFT calculations at the B3LYP/6-31G(d) level have been used to study the stereochemical course of the photochemical cycloaddition of enone 9 with dienes. The observed products of this photochemically induced cycloaddition showed a stereoselectivity, which is opposite to what would be expected by FMO considerations. The quantum chemical calculations revealed that the unusual stereoselectivity of the reaction can be rationalized by assuming a stereospecific photochemical cis-trans isomerization of enone 9 to trans isomer 9a followed by a thermal Diels-Alder reaction of the diene onto the highly reactive trans enone. The photochemical reaction step involves the selective formation of a twisted triplet intermediate, which accounts for the selectivity of the reaction.
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Affiliation(s)
- Joachim Nikolai
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
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Schwartz BD, Tilly DP, Heim R, Wiedemann S, Williams CM, Bernhardt PV. Towards the Total Synthesis of Vibsanin E, 15-O-Methylcyclovibsanin B,3-Hydroxyvibsanin E, Furanovibsanin A, and 3-O-Methylfuranovibsanin A. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600246] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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