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Synthesis of Four Orthogonally Protected Rare l-Hexose Thioglycosides from d-Mannose by C-5 and C-4 Epimerization. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113422. [PMID: 35684360 PMCID: PMC9182441 DOI: 10.3390/molecules27113422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/20/2022] [Accepted: 05/20/2022] [Indexed: 01/30/2023]
Abstract
l-Hexoses are important components of biologically relevant compounds and precursors of some therapeuticals. However, they typically cannot be obtained from natural sources and due to the complexity of their synthesis, their commercially available derivatives are also very expensive. Starting from one of the cheapest d-hexoses, d-mannose, using inexpensive and readily available chemicals, we developed a reaction pathway to obtain two orthogonally protected l-hexose thioglycoside derivatives, l-gulose and l-galactose, through the corresponding 5,6-unsaturated thioglycosides by C-5 epimerization. From these derivatives, the orthogonally protected thioglycosides of further two l-hexoses (l-allose and l-glucose) were synthesized by C-4 epimerization. The preparation of the key intermediates, the 5,6-unsaturated derivatives, was systematically studied using various protecting groups. By the method developed, we are able to produce highly functionalized l-gulose derivatives in 9 steps (total yields: 21–23%) and l-galactose derivatives in 12 steps (total yields: 6–8%) starting from d-mannose.
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León EI, Martín Á, Montes AS, Pérez-Martín I, Del Sol Rodríguez M, Suárez E. 1,5-Hydrogen Atom Transfer/Surzur-Tanner Rearrangement: A Radical Cascade Approach for the Synthesis of 1,6-Dioxaspiro[4.5]decane and 6,8-Dioxabicyclo[3.2.1]octane Scaffolds in Carbohydrate Systems. J Org Chem 2021; 86:14508-14552. [PMID: 34554734 PMCID: PMC8576821 DOI: 10.1021/acs.joc.1c01376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
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The 1,5-HAT–1,2-(ester)alkyl
radical migration (Surzur–Tanner
rearrangement) radical/polar sequence triggered by alkoxyl radicals
has been studied on a series of C-glycosyl substrates
with 3-C-(α,β-d,l-glycopyranosyl)1-propanol
and C-(α-d,l-glycopyranosyl)methanol
structures prepared from chiral pool d- and l-sugar.
The use of acetoxy and diphenoxyphosphatoxy as leaving groups provides
an efficient construction of 10-deoxy-1,6-dioxaspiro[4.5]decane and
4-deoxy-6,8-dioxabicyclo[3.2.1]octane frameworks. The alkoxyl radicals
were generated by the reaction of the corresponding N-alkoxyphthalimides with group 14 hydrides [n-Bu3SnH(D) and (TMS)3SiH], and in comparative terms,
the reaction was also initiated by visible light photocatalysis using
the Hantzsch ester/fac-Ir(ppy)3 procedure.
Special attention was devoted to the influence of the relative stereochemistry
of the centers involved in the radical sequence on the reaction outcome.
The addition of BF3•Et2O as a catalyst
to the radical sequence resulted in a significant increase in the
yields of the desired bicyclic ketals.
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Affiliation(s)
- Elisa I León
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Ángeles Martín
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Adrián S Montes
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain.,Doctoral and Postgraduate School, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, 38200 La Laguna, Tenerife, Spain
| | - Inés Pérez-Martín
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - María Del Sol Rodríguez
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Ernesto Suárez
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
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3
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Khatravath M, Mallurwar NK, Konda S, Gaddam J, Rao P, Iqbal J, Arya P. Synthesis of C1–C11 eribulin fragment and its diastereomeric analogues. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Ghosh A, Brueckner AC, Cheong PHY, Carter RG. Second-Generation Synthesis of the Northern Fragment of Mandelalide A: Role of π-Stacking on Sharpless Dihydroxylation of cis-Enynes. J Org Chem 2019; 84:9196-9214. [PMID: 31264876 DOI: 10.1021/acs.joc.9b01153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of a π-stacking-based approach for increased stereoselectivity in Sharpless asymmetric and diastereomeric dihydroxylation of cis-enynes is disclosed. The use of neighboring, electron-rich benzoate esters proved key to the success of this process. Density functional theory study suggests that the substrate benzoate ester group rigidifies the dihydroxylation transition states by forming a favorable π-stacking interaction in both Major-TS and Minor-TS. The energetic preference for the Major-TS was found in part because of the favorable eclipsing conformation of the alkene substituent as opposed to the disfavored bisecting conformation found in the Minor-TS. The application to a second-generation synthesis of the C15-C24 northern portion of mandelalide A is demonstrated.
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Affiliation(s)
- Ankan Ghosh
- Department of Chemistry , Oregon State University , Corvallis , Oregon 97331 , United States
| | - Alexander C Brueckner
- Department of Chemistry , Oregon State University , Corvallis , Oregon 97331 , United States
| | - Paul Ha-Yeon Cheong
- Department of Chemistry , Oregon State University , Corvallis , Oregon 97331 , United States
| | - Rich G Carter
- Department of Chemistry , Oregon State University , Corvallis , Oregon 97331 , United States
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5
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Bevan JGM, Lourenço EC, Chaves-Ferreira M, Rodrigues JA, Rita Ventura M. Immobilization of UDP-Galactose on an Amphiphilic Resin. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jessica G. M. Bevan
- Biology of Parasitism Laboratory; Instituto de Medicina Molecular; Faculdade de Medicina da Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
- Bioorganic Chemistry Laboratory; Instituto de Tecnologia Química e Biológica; Universidade Nova de Lisboa; Apartado 127 2780-901 Oeiras Portugal
| | - Eva C. Lourenço
- Bioorganic Chemistry Laboratory; Instituto de Tecnologia Química e Biológica; Universidade Nova de Lisboa; Apartado 127 2780-901 Oeiras Portugal
| | - Miguel Chaves-Ferreira
- Biology of Parasitism Laboratory; Instituto de Medicina Molecular; Faculdade de Medicina da Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - João A. Rodrigues
- Biology of Parasitism Laboratory; Instituto de Medicina Molecular; Faculdade de Medicina da Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - M. Rita Ventura
- Bioorganic Chemistry Laboratory; Instituto de Tecnologia Química e Biológica; Universidade Nova de Lisboa; Apartado 127 2780-901 Oeiras Portugal
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6
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Affiliation(s)
- Rui Che
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 China
| | - Xingui Liu
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 China
| | - Wei Lu
- School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 China
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7
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Wang L, Hashidoko Y, Hashimoto M. Cosolvent-Promoted O-Benzylation with Silver(I) Oxide: Synthesis of 1'-Benzylated Sucrose Derivatives, Mechanistic Studies, and Scope Investigation. J Org Chem 2016; 81:4464-74. [PMID: 27149197 DOI: 10.1021/acs.joc.6b00144] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A cosolvent-promoted O-benzylation strategy with Ag2O was developed. The cosolvent consisting of CH2Cl2 and n-hexane can not only improve the reaction solubility for carbohydrates but also increase the benzylation efficiency. The formation of byproducts is greatly inhibited in the developed method. This method is simple, mild, and highly effective, and numerous 1'-benzylated sucrose derivatives were prepared including a photoreactive (trifluoromethyl)phenyldiazirine-based sucrose. The mechanisms of benzylation with primary and secondary benzyl bromides were also elaborated. Furthermore, the application scope with alcohols, glucose, and ribose derivatives was investigated.
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Affiliation(s)
- Lei Wang
- Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University , Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Yasuyuki Hashidoko
- Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University , Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan
| | - Makoto Hashimoto
- Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University , Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan
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8
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Veerasamy N, Ghosh A, Li J, Watanabe K, Serrill JD, Ishmael JE, McPhail KL, Carter RG. Enantioselective Total Synthesis of Mandelalide A and Isomandelalide A: Discovery of a Cytotoxic Ring-Expanded Isomer. J Am Chem Soc 2016; 138:770-3. [DOI: 10.1021/jacs.5b12318] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | | | | | - Kazuhiro Watanabe
- Laboratory
of Synthetic and Medicinal Chemistry, Tohoku Pharmaceutical University, Sendai 981-8558, Japan
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9
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Affiliation(s)
| | - Mikael Bols
- Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
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10
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Rajasekaran P, Ansari AA, Vankar YD. Diastereoselective Overman Rearrangement of anL-Ascorbic-Acid-Derived Allylic Alcohol: Application in the Synthesis of (+)-1,2-Di-epi-swainsonine and a Tetrahydroxypyrrolizidine. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500129] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Chavan SP, Dumare NB, Pawar KP. Formal syntheses of (2R,3R)-3-hydroxy pipecolic acid and (2R,3S)-3-hydroxy pipecolic acid from l-ascorbic acid. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Frihed TG, Pedersen CM, Bols M. Synthesis of All EightL-Glycopyranosyl Donors Using CH Activation. Angew Chem Int Ed Engl 2014; 53:13889-93. [DOI: 10.1002/anie.201408209] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Indexed: 12/31/2022]
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13
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Frihed TG, Pedersen CM, Bols M. Synthesis of All EightL-Glycopyranosyl Donors Using CH Activation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Xia TY, Li YB, Yin ZJ, Meng XB, Li SC, Li ZJ. Synthesis of l-glucose and l-galactose derivatives from d-sugars. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.06.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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15
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16
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Affiliation(s)
- Amer El-Batta
- a Department of Chemistry , King Fahd University of Petroleum and Minerals , Dhahran , Saudi Arabia
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17
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Cuccarese MF, Wang HYL, O'Doherty GA. Application of the Wharton Rearrangement for the de novo Synthesis of Pyranosides withido,manno, andcolitoStereochemistry. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Zulueta MML, Zhong YQ, Hung SC. Synthesis of l-hexoses and their related biomolecules. Chem Commun (Camb) 2013; 49:3275-87. [DOI: 10.1039/c3cc37733d] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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20
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Li Y, Yin Z, Wang B, Meng XB, Li ZJ. Synthesis of orthogonally protected l-glucose, l-mannose, and l-galactose from d-glucose. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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22
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Sengoku T, Murata Y, Mitamura H, Takahashi M, Yoda H. Synthesis of novel mucic acid 1,4-lactone methyl ester 3-O-ferulate related to an extractive component isolated from the peels of Citrus sudachi. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.11.066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Monrad RN, Madsen R. Modern methods for shortening and extending the carbon chain in carbohydrates at the anomeric center. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.08.047] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Takamura H, Nishiuma N, Abe T, Kadota I. Convergent Synthesis of the HIJKLM Ring System of Ciguatoxin CTX3C. Org Lett 2011; 13:4704-7. [DOI: 10.1021/ol2019136] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroyoshi Takamura
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Naoki Nishiuma
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Takashi Abe
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Isao Kadota
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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25
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Synthesis and characterisation of novel glycoclusters based on cell penetrating heptakis(6-aminoethylamino-6-deoxy)-β-cyclodextrin. J INCL PHENOM MACRO 2010. [DOI: 10.1007/s10847-010-9840-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Guaragna A, D’Alonzo D, Paolella C, Napolitano C, Palumbo G. Highly Stereoselective de Novo Synthesis of l-Hexoses. J Org Chem 2010; 75:3558-68. [DOI: 10.1021/jo100077k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Annalisa Guaragna
- Dipartimento di Chimica Organica e Biochimica, Università di Napoli Federico II-Complesso Universitario Monte Sant'Angelo, via Cinthia, 4 I-80126 Napoli, Italy
| | - Daniele D’Alonzo
- Dipartimento di Chimica Organica e Biochimica, Università di Napoli Federico II-Complesso Universitario Monte Sant'Angelo, via Cinthia, 4 I-80126 Napoli, Italy
| | - Concetta Paolella
- Dipartimento di Chimica Organica e Biochimica, Università di Napoli Federico II-Complesso Universitario Monte Sant'Angelo, via Cinthia, 4 I-80126 Napoli, Italy
| | - Carmela Napolitano
- School of Chemistry, National University of Ireland, University Road, Galway, Ireland
| | - Giovanni Palumbo
- Dipartimento di Chimica Organica e Biochimica, Università di Napoli Federico II-Complesso Universitario Monte Sant'Angelo, via Cinthia, 4 I-80126 Napoli, Italy
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27
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Carbohydrate-Based Lactones: Synthesis and Applications. CARBOHYDRATES IN SUSTAINABLE DEVELOPMENT II 2010; 295:19-62. [DOI: 10.1007/128_2010_61] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Srihari P, Kumaraswamy B, Rao GM, Yadav JS. First stereoselective total synthesis of (−)-stagonolide A. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2009.12.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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30
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Han SB, Kong JR, Krische MJ. Catalyst-directed diastereoselectivity in hydrogenative couplings of acetylene to alpha-chiral aldehydes: formal synthesis of all eight L-hexoses. Org Lett 2008; 10:4133-5. [PMID: 18729371 DOI: 10.1021/ol8018874] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogenative coupling of acetylene to alpha-chiral aldehydes 1a-4a using enantiomeric rhodium catalysts ligated by (S)-MeO-BIPHEP and (R)-MeO-BIPHEP delivers the diastereomeric products of carbonyl-(Z)-butadienylation 1b-4b and 1c-4c, respectively, with good to excellent levels of catalyst directed diastereofacial selectivity. Diastereomeric L-glyceraldehyde acetonide adducts 1b and 1c were converted to the four isomeric enoates 6b, 8b, 6c, and 8c, representing a formal synthesis of all eight L-hexoses.
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Affiliation(s)
- Soo Bong Han
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, Texas 78712, USA
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31
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Covell DJ, Vermeulen NA, Labenz NA, White MC. Polyol Synthesis through Hydrocarbon Oxidation: De Novo Synthesis ofL-Galactose. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200603321] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Covell DJ, Vermeulen NA, Labenz NA, White MC. Polyol synthesis through hydrocarbon oxidation: de novo synthesis of L-galactose. Angew Chem Int Ed Engl 2006; 45:8217-20. [PMID: 17109456 PMCID: PMC2720791 DOI: 10.1002/anie.200603321] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dustin J. Covell
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL 61801 (USA)
| | - Nicolaas A. Vermeulen
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL 61801 (USA)
| | | | - M. Christina White
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL 61801 (USA), Fax: (+1)217-244-8024, E-mail:
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33
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Stereoselective synthesis of (−)-bulgecinine hydrochloride and its C-2 epimer from l-ascorbic acid. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.10.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Synthesis of protected (2R,3R,4S)-4,7-diamino-2,3-dihydroxyheptanoic acid, a constituent of callipeltins A and D. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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35
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Takahashi H, Shida T, Hitomi Y, Iwai Y, Miyama N, Nishiyama K, Sawada D, Ikegami S. Divergent Synthesis ofL-Sugars andL-Iminosugars fromD-Sugars. Chemistry 2006; 12:5868-77. [PMID: 16718730 DOI: 10.1002/chem.200600268] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An efficient divergent synthesis of L-sugars and L-iminosugars from D-sugars is described. The important intermediate, delta-hydroxyalkoxamate, prepared from D-glucono-/galactono-1,5-lactone, was cyclized under Mitsunobu conditions to give the O-cyclized oxime compound and the N-cyclized lactam compound as mixtures. A more detailed investigation revealed that the appropriate protecting groups and solvents controlled the specificity for the O-/N-cyclization of the delta-hydroxyalkoxamate. Suitable protection at the 6-position of delta-hydroxyalkoxamate, derived from D-glucono-1,5-lactone, afforded the corresponding O-alkylation product alone. Thus we succeeded in applying this to the total synthesis of L-iduronic acid. In contrast, with both TBDMS as the protecting group and RCN as the solvent the efficient conversion of D-glucono/galactono-1,5-lactone into the corresponding L-iminosugars (L-idonolactam and L-altronolactam) was achieved.
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Affiliation(s)
- Hideyo Takahashi
- School of Pharmaceutical Sciences, Teikyo University, Sagamiko, Sagamihara, Kanagawa, 199-0195, Japan
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