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D'Andrea F, Catelani G, Guazzelli L, Pistarà V. Useful access to enantiomerically pure protected inositols from carbohydrates: the aldohexos-5-uloses route. Beilstein J Org Chem 2016; 12:2343-2350. [PMID: 28144301 PMCID: PMC5238563 DOI: 10.3762/bjoc.12.227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/19/2016] [Indexed: 11/23/2022] Open
Abstract
The intramolecular aldol condensation of aldohexos-5-ulose derivatives of the D-xylo and L-ribo stereoseries has been studied. Only one of the four possible inososes was isolated from both stereoseries in reasonable yields (30–38%). The results obtained, together with the previous findings for the L-arabino and L-lyxo stereoseries, allowed for the rationalisation of a mechanism of the reaction based on open-transition-state models and electron-withdrawing inductive effects. Complementary reductions of the intermediate inososes were possible by changing the reaction conditions, and two isomeric inositol derivatives were obtained with complete stereoselection from each inosose. The presented approach permits us to control the configuration of three out of the six stereocentres of the inositol frame and gives access to seven of the nine inositols. Noteworthy, for the D-xylo derivative, the two-step sequence (condensation followed by reduction with NaBH(OAc)3) represents the biomimetic synthesis of myo-inositol. Furthermore, the sugar-based pathway leads directly to enantiomerically pure selectively protected inositols and does not require any desymmetrisation procedure which is needed when myo-inositol and other achiral precursors are employed as starting materials. As an example of application of the method, the indirect selective protection of secondary inositols’ hydroxy functions, by placing specific protecting groups on the aldohexos-5-ulose precursor has been presented.
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Affiliation(s)
- Felicia D'Andrea
- Università di Pisa, Dipartimento di Farmacia, Via Bonanno 33, 56126 Pisa, Italy
| | - Giorgio Catelani
- Università di Pisa, Dipartimento di Farmacia, Via Bonanno 33, 56126 Pisa, Italy
| | - Lorenzo Guazzelli
- Università di Pisa, Dipartimento di Farmacia, Via Bonanno 33, 56126 Pisa, Italy
| | - Venerando Pistarà
- Università di Catania, Dipartimento di Scienze del Farmaco, Viale A. Doria 6, 95125 Catania, Italy
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2
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Panda A, Biswas RG, Pal S. A unified and common intermediate strategy for the asymmetric total synthesis of 3-deoxy-neo-inositol and conduritol E. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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3
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Gurale BP, Sardessai RS, Shashidhar MS. myo-Inositol 1,3-acetals as early intermediates during the synthesis of cyclitol derivatives. Carbohydr Res 2014; 399:8-14. [PMID: 25216930 DOI: 10.1016/j.carres.2014.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/12/2014] [Accepted: 08/13/2014] [Indexed: 10/24/2022]
Abstract
Synthetic sequences starting from commercially available myo-inositol necessarily involve protection-deprotection strategies of its six hydroxyl groups. Several strategies have been developed/attempted over the last several decades leading to the synthesis of naturally occurring phosphoinositols, their analogs, and cyclitol derivatives. Of late, myo-inositol 1,3-acetals, which can be obtained by the reductive cleavage of myo-inositol orthoesters have emerged as early intermediates for the synthesis of phosphorylated and other inositol derivatives. This mini-review is an attempt to illustrate the economy and convenience of using myo-inositol 1,3-acetals as early intermediates during syntheses from myo-inositol.
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Affiliation(s)
- Bharat P Gurale
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pashan Road, Pune 411 008, India
| | - Richa S Sardessai
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pashan Road, Pune 411 008, India
| | - Mysore S Shashidhar
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pashan Road, Pune 411 008, India.
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Das D, Halder J, Bhuniya R, Nanda S. Stereoselective Synthesis of Enantiopure Oxetanes, a Carbohydrate Mimic, an ϵ-Lactone, and Cyclitols from Biocatalytically Derived β-Hydroxy Esters as Chiral Precursors. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402521] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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5
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Xu S, Shang J, Zhang J, Tang Y. Regioselective SN2' Mitsunobu reaction of Morita-Baylis-Hillman alcohols: A facile and stereoselective synthesis of α-alkylidene-β-hydrazino acid derivatives. Beilstein J Org Chem 2014; 10:990-5. [PMID: 24991249 PMCID: PMC4077529 DOI: 10.3762/bjoc.10.98] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/10/2014] [Indexed: 11/28/2022] Open
Abstract
A highly regioselective SN2' Mitsunobu reaction between Morita–Baylis–Hillman (MBH) alcohols, azodicarboxylates, and triphenylphosphine is developed, which provides an easy access to α-alkylidene-β-hydrazino acid derivatives in high yields and good stereoselectivity. This reaction represents the first direct transformation of MBH alcohols into hydrazines.
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Affiliation(s)
- Silong Xu
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Jian Shang
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Junjie Zhang
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Yuhai Tang
- Department of Chemistry, School of Science, Xi'an Jiaotong University, Xi'an 710049, P. R. China
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Lauber MB, Daniliuc CG, Paradies J. Desymmetrization of 4,6-diprotected myo-inositol. Chem Commun (Camb) 2014; 49:7409-11. [PMID: 23860461 DOI: 10.1039/c3cc43663b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric desymmetrization of 4,6-diprotected myo-inositol derivatives was achieved by using a bifunctional, readily available nucleophilic catalyst. The orthogonally protected products were obtained in 80-99% yield with 90-99% ee. Such structures serve as potential enantiopure building blocks for the synthesis of myo-inositol phosphates.
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Affiliation(s)
- Markus B Lauber
- Karlsruhe Institute of Technology, Institute for Organic Chemistry, Fritz-Haber Weg 6, Germany
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Mohanrao R, Asokan A, Sureshan KM. Bio-inspired synthesis of rare and unnatural carbohydrates and cyclitols through strain driven epimerization. Chem Commun (Camb) 2014; 50:6707-10. [DOI: 10.1039/c4cc00868e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bio-inspired isomerization of carbohydrates and cyclitols to their rare and unnatural isomers, through strain-driven epimerization of trans-ketals to cis-ketals, is introduced.
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Affiliation(s)
- Raja Mohanrao
- School of Chemistry
- Indian Institute of Science Education and Research
- Thiruvananthapuram
- Thiruvananthapuram-695016, India
| | - Aromal Asokan
- School of Chemistry
- Indian Institute of Science Education and Research
- Thiruvananthapuram
- Thiruvananthapuram-695016, India
| | - Kana M. Sureshan
- School of Chemistry
- Indian Institute of Science Education and Research
- Thiruvananthapuram
- Thiruvananthapuram-695016, India
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9
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Vibhute AM, Sureshan KM. H2SO4-silica: an eco-friendly heterogeneous catalyst for the differential protection of myo-inositol hydroxyl groups. RSC Adv 2013. [DOI: 10.1039/c3ra40506k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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11
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Concise synthesis of (+)-conduritol F and inositol analogues from naturally available (+)-proto-quercitol and their glucosidase inhibitory activity. Bioorg Med Chem Lett 2012; 22:1538-40. [PMID: 22290077 DOI: 10.1016/j.bmcl.2012.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Revised: 12/24/2011] [Accepted: 01/04/2012] [Indexed: 11/22/2022]
Abstract
An effective synthesis of (+)-conduritol F, (+)-chiro- and (+)-epi-inositols from naturally available (+)-proto-quercitol is described. This synthetic method provides a concise synthesis of cyclitols in enantiomerically pure form. Of the synthesized cyclitols, (+)-conduritol F potently inhibits type I α-glucosidase with an IC(50) value of 86.1 μM, which is five times greater than the standard antidiabetic drug, acarbose.
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Patil MT, Krishnaswamy S, Sarmah MP, Shashidhar MS. Protecting group directed stereoselective reduction of an epi-inosose: efficient synthesis of epi-inositol. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.05.051] [Citation(s) in RCA: 3] [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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13
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Duchek J, Adams DR, Hudlicky T. Chemoenzymatic Synthesis of Inositols, Conduritols, and Cyclitol Analogues. Chem Rev 2011; 111:4223-58. [DOI: 10.1021/cr1004138] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jan Duchek
- Department of Chemistry and the Centre for Biotechnology, Brock University, 500 Glenridge Avenue, St. Catharines ON L2S 3A1, Canada
| | - David R. Adams
- Department of Chemistry and the Centre for Biotechnology, Brock University, 500 Glenridge Avenue, St. Catharines ON L2S 3A1, Canada
| | - Tomas Hudlicky
- Department of Chemistry and the Centre for Biotechnology, Brock University, 500 Glenridge Avenue, St. Catharines ON L2S 3A1, Canada
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15
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Mahapatra T, Nanda S. Asymmetric synthesis of aryl cyclitols based on 1,2,3,4-tetrahydronaphthalene scaffolds. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Higashino M, Ikeda N, Shinada T, Sakaguchi K, Ohfune Y. Stereoselective anti-SN2′ Mitsunobu reaction of α-hydroxy-α-alkenylsilanes. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.11.080] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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A novel chemo-multienzymatic synthesis of bioactive cyclophellitol and epi-cyclophellitol in both enantiopure forms. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Jagdhane RC, Shashidhar MS. Orthogonally Protected Cyclohexanehexols by a “One Reaction - One Product” Approach: Efficient Access to Cyclitols and Their Analogs. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Sureshan KM, Murakami T, Watanabe Y. Total syntheses of cyclitol based natural products from myo-inositol: brahol and pinpollitol. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Swamy KCK, Kumar NNB, Balaraman E, Kumar KVPP. Mitsunobu and Related Reactions: Advances and Applications. Chem Rev 2009; 109:2551-651. [PMID: 19382806 DOI: 10.1021/cr800278z] [Citation(s) in RCA: 873] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - N. N. Bhuvan Kumar
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - E. Balaraman
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
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Sureshan KM, Devaraj S, Shashidhar MS. Regioselective O-acylation of myo-inositol 1,3,5-orthoesters: dependence of regioselectivity on the stoichiometry of the base. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.01.060] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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22
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Seo KC, Kwon YG, Kim DH, Jang IS, Cho JW, Chung SK. Chemoenzymatic syntheses of carbasugar analogues of nucleoside diphosphate sugars: UDP-carba-Gal, UDP-carba-GlcNAc, UDP-carba-Glc, and GDP-carba-Man. Chem Commun (Camb) 2009:1733-5. [PMID: 19294278 DOI: 10.1039/b821058f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemoenzymatic syntheses of several NDP-carba-sugars have been successfully carried out, and these essential cofactor analogues are expected to be selective inhibitors of glycosyltransferase enzymes.
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Affiliation(s)
- Kyung-Chang Seo
- Department of Chemistry, Pohang University of Sciecnce and Technology, Pohang, 790-784, Korea
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Efficient syntheses of optically pure chiro- and allo-inositol derivatives, azidocyclitols and aminocyclitols from myo-inositol. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.02.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Seo K, Yu S, Chung S. Divergent Synthesis of All Possible Optically Active Regioisomers ofMyo‐Inositol Mono‐ and Bisphosphates. J Carbohydr Chem 2007. [DOI: 10.1080/07328300701540225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Lang M, Ziegler T. Synthesis of Both Enantiomers of Conduritol C Tetraacetate and ofmeso-Conduritol D Tetraacetate by Oxidation of Benzoquinone Bis(ethylene acetal). European J Org Chem 2007. [DOI: 10.1002/ejoc.200600764] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Carreño MC, Merino E, Ribagorda M, Somoza A, Urbano A. Enantioselective Synthesis of Natural Polyoxygenated Cyclohexanes and Cyclohexenes from [(p-Tolylsulfinyl)methyl]-p-quinols. Chemistry 2007; 13:1064-77. [PMID: 17171737 DOI: 10.1002/chem.200601330] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Exploitation of the beta-hydroxysulfoxide fragment present in a number of enantiomerically pure (SR)- and (SS)-[(p-tolylsulfinyl)methyl]-p-quinols allowed chemo- and stereocontrolled conjugate additions of different organoaluminium reagents to the cyclohexadienone moiety. The same fragment was also shown to act as an efficient chiral masking carbonyl group, after oxidation to sulfone and retroaddition in basic medium, with elimination of methyl p-tolyl sulfone. Through the use of both transformations as key steps, enantiocontrolled syntheses of different natural products-such as the two enantiomers of dihydroepiepoformin, (-)-gabosine O, (+)-epiepoformin, (-)-theobroxide and (+)-4-epigabosine A (an epimer of the natural product gabosine A)-has been achieved. The presence of the beta-hydroxy sulfone moiety makes the cyclic structures rigid, allowing a number of stereoselective transformations such as carbonyl reductions, enone epoxidations or cis-dihydroxylations, en route to the natural structures. The observed selectivities were dependent on the particular substitution in each substrate, providing evidence of a strong influence of remote groups on the preferred approach of the reactants to the reactive conformations. An advanced precursor of natural (+)-harveynone was also synthesized, but the isolation of the natural product was not possible because of the instability of the corresponding enone, containing a triple bond, under the basic conditions necessary to eliminate the beta-hydroxy sulfone. This demonstrated that the limitations of the use of the beta-hydroxy sulfoxide as a chiral protecting carbonyl group were dependent on the relative stabilities of the final targets in the presence of the required base.
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Affiliation(s)
- M Carmen Carreño
- Departamento de Química Orgánica (C-I) Universidad Autónoma, Cantoblanco, 28049 Madrid, Spain.
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Oğuzkaya F, Şahin E, Tanyeli C. Stereoselective synthesis of optically active cyclitol precursors via a chemoenzymatic method. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Alibés R, Bayón P, de March P, Figueredo M, Font J, Marjanet G. Enantioselective Synthesis and Absolute Configuration Assignment of Gabosine O. Synthesis of (+)- and (−)-Gabosine N and (+)- and (−)-Epigabosines N and O. Org Lett 2006; 8:1617-20. [PMID: 16597124 DOI: 10.1021/ol060173e] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] A rational approach to the synthesis of gabosines and other related carba-sugars starting from a masked p-benzoquinone has been designed. The enantioselective acetylation of the hydroxyketal 2 provides a practical entry to either enantiomer of the target products. The strategy has been applied to the synthesis of (+)- and (-)-gabosines N and O and (+)- and (-)-epigabosines N and O. The absolute configuration of natural gabosine O has been established.
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Affiliation(s)
- Ramón Alibés
- Universitat Autonoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
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30
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Sureshan KM, Watanabe Y. Solid and solution state conformations of (±)-3-O-acetyl-1,2:4,5-di-O-isopropylidene-allo-inositol and (±)-3-O-acetyl-1,2:4,5-di-O-isopropylidene-6-O-methyl-allo-inositol. Carbohydr Res 2005; 340:2311-8. [PMID: 16095581 DOI: 10.1016/j.carres.2005.07.015] [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] [Received: 05/07/2005] [Revised: 07/10/2005] [Accepted: 07/19/2005] [Indexed: 11/21/2022]
Abstract
The synthesis and conformational studies of (+/-)-3-O-acetyl-1,2:4,5-di-O-isopropylidene-allo-inositol and (+/-)-3-O-acetyl-1,2:4,5-di-O-isopropylidene-6-O-methyl-allo-inositol are described. Solid state conformations of the title compounds have been studied by solving their X-ray crystal structures. The inositol ring in both the compounds deviate considerably from the ideal chair conformation to flattened chair conformation in the solid state. Their conformations in solution were studied by the use of 1H NMR spectroscopy. These conformational analyses revealed that the title compounds adopt similar conformations in solid and solution states irrespective of the solvent polarity.
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Affiliation(s)
- Kana M Sureshan
- Department of Applied Chemistry, Faculty of Engineering, Ehime University, Matsuyama 790-8577, Japan.
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Divergent syntheses of all 16 carbasugar stereoisomers via stereoconversion of carba-β-d-altropyranose derivatives. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.07.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Lee YJ, Lee K, Jung SI, Jeon HB, Kim KS. Synthesis of enantiopure cyclitols from (±)-3-bromocyclohexene mediated by intramolecular oxyselenenylation employing (S,S)-hydrobenzoin and (S)-mandelic acid as chiral sources. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.01.003] [Citation(s) in RCA: 17] [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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33
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Resolution of synthetically useful myo-inositol derivatives using the chiral auxiliary O-acetylmandelic acid. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2004.11.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
A short synthetic strategy for preparation of the conduritols is described. The key step employs a zinc-mediated fragmentation of protected methyl 5-deoxy-5-iodo-d-pentofuranosides followed by an allylation of the intermediate aldehyde in the same pot. The allylation is performed with 3-bromopropenyl benzoate and occurs with good diastereoselectivity. An amino group can be introduced in the product by trapping the intermediate aldehyde as the imine prior to the allylation. The functionalised 1,7-octadienes, thus obtained, are converted into protected conduritols by ring-closing olefin metathesis.
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Affiliation(s)
- Lise Keinicke
- Center for Sustainable and Green Chemistry, Department of Chemistry, Building 201, Technical University of Denmark, DK-2800, Lyngby, Denmark
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Sureshan KM, Watanabe Y. An efficient route to optically active inositol derivatives via the resolution of myo-inositol 1,3,5-orthoformate: a short synthesis of d-myo-inositol-4-phosphate. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.02.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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El Khadem HS, Fatiadi AJ. HYDRAZINE DERIVATIVES OF CARBA SUGARS AND RELATED COMPOUNDS. Adv Carbohydr Chem Biochem 2004; 59:135-73. [PMID: 15607765 DOI: 10.1016/s0065-2318(04)59004-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Hassan S El Khadem
- Department of Chemistry, The American University, Washington, DC 20016, USA
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Kwon YU, Im J, Choi G, Kim YS, Choi KY, Chung SK. Synthesis of three enantiomeric pairs of scyllo-inositol phosphate and molecular interactions between all possible regioisomers of scyllo-inositol phosphate and inositol 1,4,5-trisphosphate 3-kinase. Bioorg Med Chem Lett 2003; 13:2981-4. [PMID: 12941316 DOI: 10.1016/s0960-894x(03)00629-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
scyllo-Inositol phosphates, which are among the stereoisomers of myo-inositol phosphate, can have 15 possible regioisomers including three enantiomeric pairs: scyllo-I(1,2)P(2), scyllo-I(1,2,4)P(3), scyllo-I(1,2,3,4)P(4). We herein describe the facile synthetic routes to the three enantiomeric pairs of scyllo-inositol phosphate and the molecular interactions between 15 regioisomers of scyllo-inositol phosphate and inositol 1,4,5-trisphosphate 3-kinase. Geometry of the enzyme binding site is discussed.
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Affiliation(s)
- Yong-Uk Kwon
- Department of Chemistry, Division of Molecular and Life Sciences, Pohang University of Science & Technology, Pohang 790-784, South Korea
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