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Auddy S, Gupta S, Mandi S, Sharma H, Sinha S, Goswami RK. Total Synthesis of Lipopeptide Bacilotetrin C: Discovery of Potent Anticancer Congeners Promoting Autophagy. ACS Med Chem Lett 2024; 15:1340-1350. [PMID: 39140062 PMCID: PMC11318098 DOI: 10.1021/acsmedchemlett.4c00237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/22/2024] [Accepted: 07/22/2024] [Indexed: 08/15/2024] Open
Abstract
A convergent strategy for the first total synthesis of the lipopeptide bacilotetrin C has been developed. The key features of this synthesis include Crimmins acetate aldol, Steglich esterification, and macrolactamization. Twenty-nine variants of the natural product were prepared following a systematic structure-activity relationship study, where some of the designed analogues showed promising cytotoxic effects against multiple human carcinoma cell lines. The most potent analogue exhibited a ∼37-fold enhancement in cytotoxicity compared to bacilotetrin C in a triple-negative breast cancer (MDA-MB-231) cell line at submicromolar doses. The study further revealed that some of the analogues induced autophagy in cancer cells to the point of their demise at doses much lower than those of known autophagy-inducing peptides. The results demonstrated that the chemical synthesis of bacilotetrin C with suitable improvisation plays an important role in the development of novel anticancer chemotherapeutics, which would allow future rational design of novel autophagy inducers on this template.
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Affiliation(s)
- Sourya
Shankar Auddy
- School
of Chemical Sciences and School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Shalini Gupta
- School
of Chemical Sciences and School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Subrata Mandi
- School
of Chemical Sciences and School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Himangshu Sharma
- School
of Chemical Sciences and School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Surajit Sinha
- School
of Chemical Sciences and School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Rajib Kumar Goswami
- School
of Chemical Sciences and School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
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Chatterjee B, Mondal D, Bera S. Macrocyclization Strategies Towards the Synthesis of Amphidinolide Natural Products. ASIAN J ORG CHEM 2023. [DOI: 10.1002/ajoc.202200702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- Bhaskar Chatterjee
- Department of Chemistry Nabadwip Vidyasagar College 741302 Nabadwip West Bengal India
| | - Dhananjoy Mondal
- School of Chemical Sciences Central University of Gujarat 382030 Gandhinagar Gujarat (India
| | - Smritilekha Bera
- School of Chemical Sciences Central University of Gujarat 382030 Gandhinagar Gujarat (India
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Kita Y, Akai S, Fujioka H, Kamitanaka T. 1-Alkoxyvinyl Ester as an Excellent Acyl Donor: Efficient Macrolactone Synthesis. J Org Chem 2021; 86:3683-3696. [DOI: 10.1021/acs.joc.0c02677] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yasuyuki Kita
- Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, 1−6, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1−6, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1−6, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tohru Kamitanaka
- Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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4
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Affiliation(s)
- Barla Thirupathi
- Department of Chemical Sciences; Indian Institute of Science Education and Research Berhampur; Transit Campus, Govt. ITI Building, NH 59; Engineering School Road, Ganjam, Berhampur 760 010 Odisha India, ; Phone: +91-680-222 7768
| | - Bighnanshu K. Jena
- Department of Chemistry; Govt. Women's College, Bhanjpur, Baripada, Mayurbhanj; 757001 Odisha India
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Krause T, Baader S, Erb B, Gooßen LJ. Atom-economic catalytic amide synthesis from amines and carboxylic acids activated in situ with acetylenes. Nat Commun 2016; 7:11732. [PMID: 27282773 PMCID: PMC4906407 DOI: 10.1038/ncomms11732] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/25/2016] [Indexed: 12/14/2022] Open
Abstract
Amide bond-forming reactions are of tremendous significance in synthetic chemistry. Methodological research has, in the past, focused on efficiency and selectivity, and these have reached impressive levels. However, the unacceptable amounts of waste produced have led the ACS GCI Roundtable to label 'amide bond formation avoiding poor atom economy' as the most pressing target for sustainable synthetic method development. In response to this acute demand, we herein disclose an efficient one-pot amide coupling protocol that is based on simple alkynes as coupling reagents: in the presence of a dichloro[(2,6,10-dodecatriene)-1,12-diyl]ruthenium catalyst, carboxylate salts of primary or secondary amines react with acetylene or ethoxyacetylene to vinyl ester intermediates, which undergo aminolysis to give the corresponding amides along only with volatile acetaldehyde or ethyl acetate, respectively. The new amide synthesis is broadly applicable to the synthesis of structurally diverse amides, including dipeptides.
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Affiliation(s)
- Thilo Krause
- FB Chemie-Organische Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Sabrina Baader
- FB Chemie-Organische Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Benjamin Erb
- FB Chemie-Organische Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J Gooßen
- FB Chemie-Organische Chemie, Technische Universität Kaiserslautern, Erwin Schrödinger Strasse Geb. 54, 67663 Kaiserslautern, Germany
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6
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Catalytic activity assessment of [RuCl2 (p-cymene) (PTA)] in the synthesis of enol esters. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-015-0732-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Dohi T, Kamitanaka T, Takamuro H, Mishima Y, Washimi N, Kita Y. A new arylation of silyl enol ethers by quinone monoacetal substitution. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.085] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Das S, Goswami RK. Stereoselective Total Synthesis of Marine Cyclodepsipeptide Calcaripeptides A–C. J Org Chem 2014; 79:9778-91. [DOI: 10.1021/jo5019798] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sayantan Das
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Rajib Kumar Goswami
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
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10
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Yamamoto Y. Theoretical Study on Ruthenium-Catalyzed Hydrocarboxylative Dimerization of Phenylacetylene with Acetic Acid Leading to (1E,3E)-1,4-Diphenyl-1,3-butadienyl Acetate. Organometallics 2013. [DOI: 10.1021/om4007517] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihiko Yamamoto
- Department
of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
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12
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Abstract
The first total syntheses of a variety of antibiotics have been accomplished by using carbohydrates as a chiral source. The key target molecules were members of the 'Big Four' classes of antibiotics (macrolides, aminoglycosides, β-lactams and tetracyclines), naphthoquinone antibiotics and their related antibiotics.
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13
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Lorente A, Lamariano-Merketegi J, Albericio F, Álvarez M. Tetrahydrofuran-containing macrolides: a fascinating gift from the deep sea. Chem Rev 2013; 113:4567-610. [PMID: 23506053 DOI: 10.1021/cr3004778] [Citation(s) in RCA: 250] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adriana Lorente
- Institute for Research in Biomedicine, Barcelona Science Park, University of Barcelona, Baldiri Reixac 10, 08028 Barcelona, Spain
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14
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Chatterjee B, Mondal D, Bera S. Asymmetric synthesis of a 12-membered macrolactone core and a 6-epi analogue of amphidinolide W from 4-pentenoic acid. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kuninobu Y, Kawata A, Noborio T, Yamamoto SI, Matsuki T, Takata K, Takai K. Indium-Catalyzed Synthesis of Keto Esters from Cyclic 1,3-Diketones and Alcohols and Application to the Synthesis of Seratrodast. Chem Asian J 2010; 5:941-5. [DOI: 10.1002/asia.200900553] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Willem Q, Nicks F, Sauvage X, Delaude L, Demonceau A. Ruthenium–arene complexes bearing imidazol(in)ium-2-dithiocarboxylate ligands: Evaluation of their catalytic activity in the synthesis of enol esters. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.08.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Kiesewetter MK, Scholten MD, Kirn N, Weber RL, Hedrick JL, Waymouth RM. Cyclic Guanidine Organic Catalysts: What Is Magic About Triazabicyclodecene? J Org Chem 2009; 74:9490-6. [DOI: 10.1021/jo902369g] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Marc D. Scholten
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - Nicole Kirn
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - Ryan L. Weber
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - James L. Hedrick
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305
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20
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Nicks F, Aznar R, Sainz D, Muller G, Demonceau A. Novel, Highly Efficient and Selective Ruthenium Catalysts for the Synthesis of Vinyl Esters from Carboxylic Acids and Alkynes. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900697] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Ohba Y, Takatsuji M, Nakahara K, Fujioka H, Kita Y. A highly efficient macrolactonization method via ethoxyvinyl ester. Chemistry 2009; 15:3526-37. [PMID: 19229939 DOI: 10.1002/chem.200801548] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We present the highly efficient reaction procedure of the macrolactonization method via ethoxyvinyl esters (EVEs). The following procedure was performed: 1) The EVE was prepared from hydroxycarboxylic acid and ethoxyacetylene in the presence of the Ru catalyst [RuCl(2)(p-cymene)](2) in acetone; 2) after filtration of the Ru catalyst through a short-neutral SiO(2) pad and evaporation of acetone, the EVE formed was diluted in 1,2-dichloroethane (DCE) and the solution was slowly added by a syringe pump to the highly diluted DCE solution of pTsOH (10 mol %) at 80 degrees C. Various-sized lactones could be produced by the method described here. It is noteworthy that the method can give 9- to 14-membered macrolactones in good yields. This macrolactonization method via EVEs is useful for acid-/base-sensitive substrates. Furthermore, it was found that EVE formation was possible without loosing activity of the Ru catalyst even for the compounds with nucleophilic amine functions. The characteristic feature of the method was exemplified by the reaction of the compound 14 with many functional groups.
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Affiliation(s)
- Yusuke Ohba
- Graduate School of Pharmaceutical Sciences, Osaka University 1-6, Yamada-oka, Suita, Osaka, Japan
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22
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Mohapatra DK, Chatterjee B, Gurjar MK. Highly stereoselective approach toward the synthesis of the macrolactone core of amphidinolide W. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.11.088] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Kim CH, An HJ, Shin WK, Yu W, Woo SK, Jung SK, Lee E. Stereoselective synthesis of (-)-amphidinolide E. Chem Asian J 2008; 3:1523-34. [PMID: 18604821 DOI: 10.1002/asia.200800062] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The total synthesis of (-)-amphidinolide E was accomplished by following a synthetic scheme that incorporates the labile C2 stereocenter at a very late stage. The oxolane unit was prepared by beta-alkoxyacrylate radical cyclization. The enyne metathesis reaction was employed for the synthesis of the side chain. The Kocienski-Julia reaction was used for the union of the two major fragments, and the Kita macrolactonization protocol was used for macrolide synthesis.
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Affiliation(s)
- Chan Hyuk Kim
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea
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24
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Ehrlich G, Hassfeld J, Eggert U, Kalesse M. The total synthesis of (+)-tedanolide--A macrocyclic polyketide from marine sponge Tedania ignis. Chemistry 2008; 14:2232-47. [PMID: 18165955 DOI: 10.1002/chem.200701529] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Tedanolide, which was isolated by Schmitz in 1984 from the marine sponge Tedania ignis, is a highly cytotoxic macrolide leading to strong growth inhibition of P338 tumor cells in bioassays. A unique structural feature of the known tedanolides is the primary hydroxyl group incorporated in the macrolactone. This unusual motif for macrolactones originated from PKS biosynthesis might arise through lactonizations others than those derived by the thioesterase reaction. First experimental data that support this hypothesis and reflect the inherent preference of PKS-induced macrolactonization were obtained during this synthesis. The inherent preference for the formation of a 14-membered macrocyclization is discussed together with the pivotal steps in the synthesis.
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Affiliation(s)
- Gunnar Ehrlich
- Institut für Organische Chemie, Gottfried Wilhelm Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
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25
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Tatsuta K. Total synthesis and development of bioactive natural products. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2008; 84:87-106. [PMID: 18941289 PMCID: PMC2805509 DOI: 10.2183/pjab.84.87] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Accepted: 02/26/2008] [Indexed: 05/26/2023]
Abstract
The first total synthesis and development of a variety of bioactive natural products have been accomplished by using carbohydrates as a chiral source. In addition, practically useful intermediates have been created, analogs of natural products have been prepared, their structure-activity relationships studied, and the large-scale preparations of medicinally useful compounds established. The key target molecules have been the "Big Four" antibiotics (macrolides, aminoglycosides, beta-lactams and tetracyclines), pyranonaphthoquinone antibiotics, glycosidase inhibitors, and a side-chain of cephem antibiotics.
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Affiliation(s)
- Kuniaki Tatsuta
- Graduate School of Science and Engineering, Waseda University, Tokyo, Japan.
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26
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Kawata A, Takata K, Kuninobu Y, Takai K. Indium-Catalyzed Retro-Claisen Condensation. Angew Chem Int Ed Engl 2007; 46:7793-5. [PMID: 17786902 DOI: 10.1002/anie.200702798] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Atsushi Kawata
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan
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27
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Kawata A, Takata K, Kuninobu Y, Takai K. Indium-Catalyzed Retro-Claisen Condensation. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200702798] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Abstract
Four amphidinolide E stereoisomers, amphidinolide E (1), 2-epi-amphidinolide E (2), 19-epi-amphidinolide E (3), and 2-epi-19-epi-amphidinolide E (4), have been synthesized via the judicious union of aldehyde 5, allylsilanes 7 or 8, acids 9 or 10, and vinylstannane 6. The C19 stereocenters of the C19 epimeric allylsilanes 7 and 8 were introduced via crotylboration reactions early in the synthesis. [3+2]-Annulation reactions of aldehyde 5 with allylsilanes 7 and 8 were employed to set the core tetrahydrofuran units of 1-4. Finally, the C2 stereocenter was installed by esterification using acid 9, without incident, or with acid 10, in which case an unexpected and completely stereoselective inversion of C2 occurs.
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Affiliation(s)
- Porino Va
- Departments of Chemistry and Biochemistry, Scripps Florida, Jupiter, Florida 33458
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29
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Kim CH, An HJ, Shin WK, Yu W, Woo SK, Jung SK, Lee E. Total Synthesis of (−)-Amphidinolide E. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200603363] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Kim CH, An HJ, Shin WK, Yu W, Woo SK, Jung SK, Lee E. Total Synthesis of (−)-Amphidinolide E. Angew Chem Int Ed Engl 2006; 45:8019-21. [PMID: 17094152 DOI: 10.1002/anie.200603363] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chan Hyuk Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
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31
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Ackermann U, Blanc P, Falzon CL, Issa W, White J, Tochon-Danguy HJ, Sachinidis JI, Scott AM. Synthesis of 11C labelled methyl esters: transesterification of enol esters versus BF3 catalysed esterification—a comparative study. Radiat Phys Chem Oxf Engl 1993 2006. [DOI: 10.1016/j.radphyschem.2005.05.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Tatsuta K, Hosokawa S. Total Synthesis of Selected Bioactive Natural Products: Illustration of Strategy and Design. Chem Rev 2005; 105:4707-29. [PMID: 16351059 DOI: 10.1021/cr040630+] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kuniaki Tatsuta
- Graduate School of Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan.
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Kourist R, González-Sabín J, Liz R, Rebolledo F. Kinetic Resolution of 1-Biaryl- and 1-(Pyridylphenyl)alkan-1-ols Catalysed by the Lipase B fromCandida antarctica. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200404330] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Kita Y, Akai S. 1-alkoxyvinyl esters: renaissance of half-century-old acyl donors with potential applicability. CHEM REC 2005; 4:363-72. [PMID: 15739198 DOI: 10.1002/tcr.20027] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Among the various kinds of acyl donors, the 1-alkoxyvinyl esters have characteristic features, such as a high reactivity under nearly neutral conditions and the generation of neutral and volatile esters as single coproducts. Although their use in organic syntheses began in the middle of the 1950s, no significant progress has been seen. This is probably because the existing method of preparing alkoxyvinyl esters used toxic mercuric salts and was not totally applicable for those esters having functionalized acyl moieties. We have discovered that the use of a catalytic amount of the less toxic [RuCl2(p-cymene)]2 effectively accelerates the addition of carboxylic acids to ethoxyacetylene to give ethoxyvinyl esters bearing a variety of functionalized acyl groups in high yields. This discovery has opened a new avenue for developing new reactions and new synthetic methodologies based on the design and use of these acyl donors with suitable functional groups. Such examples include (i) the installation of hydrophilic acyl moieties on biologically active compounds, (ii) asymmetric Pummerer-type reactions, (iii) aromatic Pummerer-type reactions, (iv) the lipase-catalyzed desymmetrization of symmetrical 1,3-diols, and (v) lipase-catalyzed domino reactions. Future possibilities for these acyl donors are also discussed.
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Affiliation(s)
- Yasuyuki Kita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
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35
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Klomp D, Djanashvili K, Svennum NC, Chantapariyavat N, Wong CS, Vilela F, Maschmeyer T, Peters JA, Hanefeld U. Combined epimerisation and acylation: Meerwein–Ponndorf–Verley–Oppenauer catalysts in action. Org Biomol Chem 2005; 3:483-9. [PMID: 15678186 DOI: 10.1039/b413944e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical racemisation-epimerisation method for chiral secondary alcohols has been developed. Meerwein-Ponndorf-Verley-Oppenauer catalysts such as neodymium(III) isopropoxide are able to racemise these alcohols with retention of other stereocentres in the molecule. This is particularly useful for the recycling of the undesired products of kinetic resolutions of alcohols. By combination of such a racemisation with an acylation using isopropenyl or ethoxyvinyl esters as acyl donors, a fast straightforward recycling of starting materials may be achieved. The combined epimerisation and acylation process is demonstrated for the steroid estradiol methyl ether.
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Affiliation(s)
- Dirk Klomp
- Gebouw voor Scheikunde, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
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Akai S. [Development of novel asymmetric reactions oriented to next-generation enzymatic organic syntheses]. YAKUGAKU ZASSHI 2003; 123:919-31. [PMID: 14631754 DOI: 10.1248/yakushi.123.919] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Enzyme-catalyzed organic syntheses have enormous potential in the development of environmentally benign processes. In the last two decades, increased efforts have been devoted to making this a reality. However, the utility of the enzymes is generally limited. For example, although the lipases are extensively used for the kinetic resolution or the desymmetrization of alcohols and carboxylic acid derivatives, little is known about their ability to catalyze carbon-carbon bond-forming reactions. In the past several years, we have been engaged in exploiting a next-generation enzymatic synthesis by using the lipases for the construction of carbon skeletons. This review article describes the results. First, the development of a new type of acyl donor, 1-ethoxyvinyl esters (EVEs), that have significant advantages over common acyl donors (e.g., vinyl esters) for lipase-catalyzed esterification reactions. Second, the highly enantioselective desymmetrization of prochiral 1,3-propanediols and meso 1,2-diols using 1-ethoxyvinyl 2-furoate. The application of this technology for the asymmetric syntheses of fredericamycin A analogues and the oxindoles with a chiral, nonracemic quaternary carbon center has been demonstrated. Third, the first lipase-catalyzed domino reaction using EVEs possessing a suitably functionalized acyl moiety is described. The acyl moiety installed during the enzymatic kinetic resolution was used as a part of the constituent structure for the subsequent Diels--Alder reaction to product optically pure tricyclic compounds with five chiral carbon centers via a one-pot operation. The potential influence of the lipase on the Diets--Alder reaction and the domino process accompanied by the dynamic kinetic resolution are also described.
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Affiliation(s)
- Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita 565-0871, Japan.
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Nakagawa H, Okimoto Y, Sakaguchi S, Ishii Y. Synthesis of enol and vinyl esters catalyzed by an iridium complex. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02451-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Kita Y. [Development of novel synthetic organic reactions: synthesis of antitumor natural products and leading compounds for new pharmaceuticals]. YAKUGAKU ZASSHI 2002; 122:1011-35. [PMID: 12510383 DOI: 10.1248/yakushi.122.1011] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Biologically active natural products with unique, highly complex molecular skeletons have been used as leading compounds for raw materials of new drugs. Due to the limitations of natural supply, highly efficient, large-scale syntheses and molecular design have been sought in drug discovery. For this purpose, we have focused on a synthetic strategy effective in developing novel reactions and reagents and found several useful regio- and stereospecific reactions, contributing to the synthesis of otherwise unattainable target molecules. The application of these reactions for the total synthesis of three types of potent cytotoxic natural products for the first time is described in this paper. The basic concept is first described. Then the total synthesis of anthracyclines, fredericamycin A, and discorhabdins is reported. Novel reactions using hypervalent iodine reagents under environmentally benign conditions are also described. The future prospects for this method are discussed.
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Affiliation(s)
- Yasuyuki Kita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
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Ilankumaran P, Verkade JG. Highly Selective Acylation of Alcohols Using Enol Esters Catalyzed by Iminophosphoranes. J Org Chem 1999. [DOI: 10.1021/jo990928d] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - John G. Verkade
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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Orita A, Sakamoto K, Hamada Y, Mitsutome A, Otera J. Mild and practical acylation of alcohols with esters or acetic anhydride under distannoxane catalysis. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00072-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Mehring M, Schürmann M, Paulus I, Horn D, Jurkschat K, Orita A, Otera J, Dakternieks D, Duthie A. Spacer-bridged ladder compounds—syntheses, structures and synthetic applications. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(98)00935-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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Alonso E, Ramón DJ, Yus M. Reductive deprotection of allyl, benzyl and sulfonyl substituted alcohols, amines and amides using a naphthalene-catalysed lithiation. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00920-4] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Akai S, Naka T, Takebe Y, Kita Y. Enzyme-catalyzed asymmetrization of 2,2-disubstituted 1,3-propanediols using 1-ethoxyvinyl esters. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)00855-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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45
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Shibata N, Matsugi M, Kawano N, Fukui S, Fujimori C, Gotanda K, Murata K, Kita Y. Highly asymmetric Pummerer-type reaction induced by ethoxy vinyl esters. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s0957-4166(96)00510-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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1-Ethoxyvinyl acetate as a novel, highly reactive, and reliable acyl donor for enzymatic resolution of alcohols. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)01658-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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Vedejs E, Daugulis O. Dual Activation in the Esterification of Hindered Alcohols with Anhydrides Using MgBr2 and a Tertiary Amine. J Org Chem 1996. [DOI: 10.1021/jo9609485] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Edwin Vedejs
- Chemistry Department, University of Wisconsin, Madison, Wisconsin 53706
| | - Olafs Daugulis
- Chemistry Department, University of Wisconsin, Madison, Wisconsin 53706
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48
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Seiller B, Heins D, Bruneau C, H. Dixneuf P. Efficient preparations of acylamides, acylcarbamates and acylureas from alk-1-en-2-yl esters. Tetrahedron 1995. [DOI: 10.1016/0040-4020(95)00666-v] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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49
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