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Sakai T, Mizuno S, Sone A, Hori Y, Yamazaki W, Takazawa K, Mori Y. Biomimetic Construction of a syn-2,7-Dimethyloxepane Ring via 7- Endo Cyclization. J Org Chem 2021; 87:579-594. [PMID: 34958571 DOI: 10.1021/acs.joc.1c02600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
syn-2,7-Dimethyloxepane is a unique structure observed in natural ladder-shaped polycyclic ethers (LSPs), such as Caribbean ciguatoxins, gymnocin-B, and brevisulcenal-F that exhibit potent biological activities. Thus, the successful construction of this seven-membered ring is desirable, but its ring strain and the 1,3-repulsion between its two methyl groups makes this process difficult. Herein, we prepared syn-2,7-dimethyloxepanes via 7-endo cyclizations of vinyl epoxides that break Baldwin's rules. Such a biomimetic approach to syn-2,7-dimethyloxepanes has not yet been reported; however, we achieved this challenging cyclization with the aid of a cis-olefin tether and an unsubstituted vinyl group. The NO-ring fragment of gymnocin-B was also prepared from one of these 7-endo cyclized products, demonstrating the potential application of this strategy in constructing bioactive LSPs.
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Affiliation(s)
- Takeo Sakai
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Sae Mizuno
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Akitaka Sone
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Yasuko Hori
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Wakana Yamazaki
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Keisuke Takazawa
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Yuji Mori
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
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2
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Vartanova AE, Plodukhin AY, Ratmanova NK, Andreev IA, Anisimov MN, Gudimchuk NB, Rybakov VB, Levina II, Ivanova OA, Trushkov IV, Alabugin IV. Expanding Stereoelectronic Limits of endo- tet Cyclizations: Synthesis of Benz[ b]azepines from Donor-Acceptor Cyclopropanes. J Am Chem Soc 2021; 143:13952-13961. [PMID: 34406759 DOI: 10.1021/jacs.1c07088] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The importance of intramolecular constraints in cyclic transition-state geometries is especially pronounced in n-endo-tet cyclizations, where the usual backside approach of a nucleophile to the breaking bond is impossible for the rings containing less than eight atoms. Herein, we expand the limits of endo-tet cyclizations and show that donor-acceptor cyclopropanes can provide a seven-membered ring via a genuine 6-endo-tet process. Substrates containing a N-alkyl-N-arylcarbamoyl moiety as an acceptor group undergo Lewis acid-induced cyclization to form tetrahydrobenz[b]azepin-2-ones in high yields. The reaction proceeds with the inversion of the configuration at the electrophilic carbon. In this process, a formally six-membered transition state yields a seven-membered ring as the pre-existing cycle is merged into the forming ring. The stereochemistry of the products can be controlled by the reaction time and by the nature of Lewis acid, opening access to both diastereomers by tuning of the reaction conditions.
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Affiliation(s)
- Anna E Vartanova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119334, Russian Federation.,Faculty of Science, RUDN University, Moscow 117198, Russian Federation
| | - Andrey Yu Plodukhin
- Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Nina K Ratmanova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology, and Immunology, Moscow 117997, Russian Federation
| | - Ivan A Andreev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119334, Russian Federation.,Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology, and Immunology, Moscow 117997, Russian Federation
| | - Mikhail N Anisimov
- Department of Physics, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation.,Center for Theoretical Problems of Physicochemical Pharmacology, Moscow 119334, Russian Federation
| | - Nikita B Gudimchuk
- Department of Physics, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation.,Center for Theoretical Problems of Physicochemical Pharmacology, Moscow 119334, Russian Federation
| | - Victor B Rybakov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Irina I Levina
- Institute of Biochemical Physics, Russian Academy of Sciences, Moscow 119334, Russian Federation
| | - Olga A Ivanova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119334, Russian Federation.,Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Igor V Trushkov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119334, Russian Federation
| | - Igor V Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390 United States
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Gross LJ, Stark CBW. Regioselective dehydration of α-hydroxymethyl tetrahydrofurans using Burgess' reagent under microwave irradiation. Org Biomol Chem 2018; 15:4282-4285. [PMID: 28485439 DOI: 10.1039/c7ob00607a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We here present a highly efficient and high yielding procedure for the preparation of 2-vinyl tetrahydrofurans starting from α-hydroxymethyl tetrahydrofurans. Best results for this dehydration were achieved using Burgess' reagent in dioxane under microwave irradiation. A range of functional groups as well as different cyclic and bicyclic frameworks were found to be compatible with the reaction conditions. The desired products were obtained within minutes in good to high yields and excellent regioselectivity.
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Affiliation(s)
- Leona J Gross
- Fachbereich Chemie, Institut für Organische Chemie, Universität Hamburg, Martin-Luther-King Platz 6, 20146 Hamburg, Germany.
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4
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Ma Z, Chen C. Natural products as inspiration for the development of new synthetic methods. J CHIN CHEM SOC-TAIP 2018; 65:43-59. [PMID: 29430058 PMCID: PMC5800783 DOI: 10.1002/jccs.201700134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Natural products have played an important role in shaping modern synthetic organic chemistry. In particular, their complex molecular skeletons have stimulated the development of many new synthetic methods. We highlight in this article some recent examples of synthetic design inspired by the biosynthesis of natural products.
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Affiliation(s)
- Zhiqiang Ma
- Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, USA
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Chuo Chen
- Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9038, USA
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5
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Hurtak JA, McDonald FE. Synthesis of the ABC Substructure of Brevenal by Sequential exo-Mode Oxacyclizations of Acyclic Polyene Precursors. Org Lett 2017; 19:6036-6039. [DOI: 10.1021/acs.orglett.7b02538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jessica A. Hurtak
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Frank E. McDonald
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
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6
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Ueda T, Suzuki A, Sasaki M, Hoshiya N, Uenishi J. Total Synthesis of (+)-Goniodenin. J Org Chem 2016; 81:12374-12381. [PMID: 27978738 DOI: 10.1021/acs.joc.6b02432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Goniodenin is a lipophilic polyketide originating from plant sources and which possesses a potent cytotoxic activity against cancer cell lines. The first total synthesis of (+)-goniodenin has been achieved in 23 steps from (R)-glycidol. The synthetic sequence featured a cross metathesis for the formation of the C8-C9 bond and installation of the terminal γ-butenolactone ring unit by the alkylation of α-phenylthio-γ-butyrolactone with the corresponding C3-O-triflate. The stereogenic center at C18 carbon was created by Hiyama-Fujita reduction of the corresponding ketone with high diastereoselectivity.
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Affiliation(s)
- Tsuyoshi Ueda
- Kyoto Pharmaceutical University , Shichonocho 1, Misasagi, Yamashina, Kyoto, 607-8412, Japan
| | - Ai Suzuki
- Kyoto Pharmaceutical University , Shichonocho 1, Misasagi, Yamashina, Kyoto, 607-8412, Japan
| | - Mai Sasaki
- Kyoto Pharmaceutical University , Shichonocho 1, Misasagi, Yamashina, Kyoto, 607-8412, Japan
| | - Naoyuki Hoshiya
- Kyoto Pharmaceutical University , Shichonocho 1, Misasagi, Yamashina, Kyoto, 607-8412, Japan
| | - Jun'ichi Uenishi
- Kyoto Pharmaceutical University , Shichonocho 1, Misasagi, Yamashina, Kyoto, 607-8412, Japan
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Adrian J, Stark CBW. Modular and Stereodivergent Approach to Unbranched 1,5,9,n-Polyenes: Total Synthesis of Chatenaytrienin-4. J Org Chem 2016; 81:8175-86. [DOI: 10.1021/acs.joc.6b01051] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juliane Adrian
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz
6, 20146 Hamburg, Germany
| | - Christian B. W. Stark
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz
6, 20146 Hamburg, Germany
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8
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Imagawa N, Nagato Y, Ohmatsu K, Ooi T. Multiple Absolute Stereocontrol in Pd-Catalyzed [3+2] Cycloaddition of Oxazolidinones and Trisubstituted Alkenes Using Chiral Ammonium–Phosphine Hybrid Ligands. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naomichi Imagawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Graduate School of Engineering, Nagoya University
| | - Yuya Nagato
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Graduate School of Engineering, Nagoya University
| | - Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Graduate School of Engineering, Nagoya University
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Graduate School of Engineering, Nagoya University
- CREST, Japan Science and Technology Agency (JST)
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Gilmore K, Mohamed RK, Alabugin IV. The Baldwin rules: revised and extended. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2016. [DOI: 10.1002/wcms.1261] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kerry Gilmore
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; Potsdam Germany
| | - Rana K. Mohamed
- Department of Chemistry and Biochemistry; Florida State University; Tallahassee FL USA
| | - Igor V. Alabugin
- Department of Chemistry and Biochemistry; Florida State University; Tallahassee FL USA
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Armbrust KW, Beaver MG, Jamison TF. Rhodium-catalyzed endo-selective epoxide-opening cascades: formal synthesis of (-)-brevisin. J Am Chem Soc 2015; 137:6941-6. [PMID: 25984951 DOI: 10.1021/jacs.5b03570] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[Rh(CO)2Cl]2 is as an effective catalyst for endo-selective cyclizations and cascades of epoxy-(E)-enoate alcohols, thus enabling the synthesis of oxepanes and oxepane-containing polyethers from di- and trisubstituted epoxides. Syntheses of the ABC and EF ring systems of (-)-brevisin via all endo-diepoxide-opening cascades using this method constitute a formal total synthesis and demonstrate the utility of this methodology in the context of the synthesis of marine ladder polyether natural products.
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Affiliation(s)
- Kurt W Armbrust
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Matthew G Beaver
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Timothy F Jamison
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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11
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Adrian J, Stark CBW. Total Synthesis of Muricadienin, the Putative Key Precursor in the Solamin Biosynthesis. Org Lett 2014; 16:5886-9. [DOI: 10.1021/ol502849y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juliane Adrian
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King
Platz 6, 20146 Hamburg, Germany
| | - Christian B. W. Stark
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King
Platz 6, 20146 Hamburg, Germany
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12
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Schmidt J, Stark CBW. Synthetic Endeavors toward 2-Nitro-4-Alkylpyrroles in the Context of the Total Synthesis of Heronapyrrole C and Preparation of a Carboxylate Natural Product Analogue. J Org Chem 2014; 79:1920-8. [DOI: 10.1021/jo402240g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jens Schmidt
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz
6, 20146 Hamburg, Germany
| | - Christian B. W. Stark
- Fachbereich Chemie, Institut
für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz
6, 20146 Hamburg, Germany
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13
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E. McDonald F, L. Stoltz K, R. Alba AN, B. Wieliczko M, Bacsa J. Iodoetherification of Conformationally Restricted Dienyl Alcohols: Unexpected Formation of Oxocenes by 8-endo-mode Oxacyclizations. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)54] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Underwood BS, Tanuwidjaja J, Ng SS, Jamison TF. Total syntheses of the squalene-derived halogenated polyethers ent-dioxepandehydrothyrsiferol and armatol A via bromonium- and Lewis acid-initiated epoxide-opening cascades. Tetrahedron 2013; 69:5205-5220. [PMID: 23878408 PMCID: PMC3713853 DOI: 10.1016/j.tet.2013.04.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Herein we describe in full our investigations leading to the first total syntheses of ent-dioxepandehydrothyrsiferol and armatol A. Discovery of a bromonium-initiated epoxide-opening cascade enabled novel tactics for constructing key fragments found in both natural products and have led us to revise the proposed biogeneses. Other common features found in the routes include convergent fragment coupling strategies to assemble the natural products' backbones and the use of epoxide-opening cascades for rapid constructions of the fused polyether subunits. Through de novo synthesis of armatol A, we elucidate the absolute and relative configuration of this natural product.
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Affiliation(s)
- Brian S. Underwood
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Jessica Tanuwidjaja
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Sze-Sze Ng
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
| | - Timothy F. Jamison
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
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15
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Kleinke AS, Webb D, Jamison TF. Recent progress in the synthesis of oxepanes and medium ring ethers. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.081] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Schmidt J, Stark CBW. Biomimetic Synthesis and Proposal of Relative and Absolute Stereochemistry of Heronapyrrole C. Org Lett 2012; 14:4042-5. [DOI: 10.1021/ol300954s] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jens Schmidt
- Fachbereich Chemie, Institut für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Christian B. W. Stark
- Fachbereich Chemie, Institut für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
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Lowe MA, Ostovar M, Ferrini S, Chen CC, Lawrence PG, Fontana F, Calabrese AA, Aggarwal VK. Palladium-Mediated Annulation of Vinyl Aziridines with Michael Acceptors: Stereocontrolled Synthesis of Substituted Pyrrolidines and Its Application in a Formal Synthesis of (−)-α-Kainic Acid. Angew Chem Int Ed Engl 2011; 50:6370-4. [DOI: 10.1002/anie.201101389] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Revised: 04/18/2011] [Indexed: 11/10/2022]
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18
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Lowe MA, Ostovar M, Ferrini S, Chen CC, Lawrence PG, Fontana F, Calabrese AA, Aggarwal VK. Palladium-Mediated Annulation of Vinyl Aziridines with Michael Acceptors: Stereocontrolled Synthesis of Substituted Pyrrolidines and Its Application in a Formal Synthesis of (−)-α-Kainic Acid. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101389] [Citation(s) in RCA: 30] [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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Morten CJ, Byers JA, Jamison TF. Evidence that epoxide-opening cascades promoted by water are stepwise and become faster and more selective after the first cyclization. J Am Chem Soc 2011; 133:1902-8. [PMID: 21235230 PMCID: PMC3084897 DOI: 10.1021/ja1088748] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A detailed kinetic study of the endo-selective epoxide-opening cascade reaction of a diepoxy alcohol in neutral water was undertaken using (1)H NMR spectroscopy. The observation of monoepoxide intermediates resulting from initial endo and exo cyclization indicated that the cascade proceeds via a stepwise mechanism rather than through a concerted one. Independent synthesis and cyclization of these monoepoxide intermediates demonstrated that they are chemically and kinetically competent intermediates in the cascade. Analysis of each step of the reaction revealed that both the rate and regioselectivity of cyclization improve as the cascade reaction proceeds. In the second step, cyclization of an epoxy alcohol substrate templated by a fused diad of two tetrahydropyran rings proceeds with exceptionally high regioselectivity (endo:exo = 19:1), the highest we have measured in the opening of a simple trans-disubstituted epoxide. The origins of these observations are discussed.
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Affiliation(s)
- Christopher J. Morten
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139
| | - Jeffery A. Byers
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139
| | - Timothy F. Jamison
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139
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Boone MA, Tong R, McDonald FE, Lense S, Cao R, Hardcastle KI. Biomimetic Syntheses from Squalene-Like Precursors: Synthesis of ent-Abudinol B and Reassessment of the Structure of Muzitone. J Am Chem Soc 2010; 132:5300-8. [DOI: 10.1021/ja1006806] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew A. Boone
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Rongbiao Tong
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | | | - Sheri Lense
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Rui Cao
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
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Passiniemi M, Koskinen AM. Stereoselective total synthesis of pachastrissamine (jaspine B). Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.12.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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