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Dhokale RA, Seidl FJ, Shinde AH, Mague JT, Sathyamoorthi S. Tethered Silanoxyiodination of Alkenes. J Org Chem 2021; 86:9233-9243. [PMID: 34128664 DOI: 10.1021/acs.joc.1c00872] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present the first examples of tethered silanoxyiodination reactions of allylic alcohols. The products are useful silanediol organoiodide synthons and are formed with high regioselectivity and diastereocontrol. The reaction is scalable greater than 10-fold without loss of yield or selectivity. Furthermore, the products are starting materials for further transformations, including deiodination, C-N bond installation, epoxide synthesis, and desilylation. DFT calculations provide a basis for understanding the exquisite 6-endo selectivity of this silanoxyiodination reaction and show that the observed products are both kinetically and thermodynamically preferred.
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Affiliation(s)
- Ranjeet A Dhokale
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | | | - Anand H Shinde
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Joel T Mague
- Department of Chemistry, Tulane University, New Orleans, Louisiana, 70118, United States
| | - Shyam Sathyamoorthi
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
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2
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Donohoe TJ, Lipiński RM. Interplay of Cascade Oxidative Cyclization and Hydride Shifts in the Synthesis of the ABC Spiroketal Ring System of Pectenotoxin-4. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208919] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Donohoe TJ, Lipiński RM. Interplay of cascade oxidative cyclization and hydride shifts in the synthesis of the ABC spiroketal ring system of pectenotoxin-4. Angew Chem Int Ed Engl 2013; 52:2491-4. [PMID: 23362216 DOI: 10.1002/anie.201208919] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Indexed: 11/09/2022]
Abstract
Concepts: The formation of stereochemically defined bis-THF units through a double cyclization and a hydride-shift-initiated route to spiroketals is described (see scheme; Xc=chiral auxiliary). The resulting sequence has been used in a synthesis of the C1-16 fragment of the naturally occurring antitumor agent pectenotoxin-4.
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Affiliation(s)
- Timothy J Donohoe
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.
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4
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Jana AK, Panda G. Stereoselective synthesis of Jaspine B and its C2 epimer from Garner aldehyde. RSC Adv 2013. [DOI: 10.1039/c3ra41778f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Fujioka H, Maehata R, Wakamatsu S, Nakahara K, Hayashi T, Oki T. Stereoselective Synthesis of cis-2,5-Disubstituted THFs: Application to Adjacent Bis-THF Cores of Annonaceous Acetogenins. Org Lett 2012; 14:1054-7. [DOI: 10.1021/ol203425p] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Ryota Maehata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Shintaro Wakamatsu
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Kenji Nakahara
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Tatsuya Hayashi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Tomohiro Oki
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
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Piccialli V, Zaccaria S, Centore R, Tuzi A, Borbone N, Oliviero G. Isolation of a bis-iodurated tetra-THF as a trace product from the oxidation of squalene with RuO₄ and its double ring expansion to a novel bis-THF-bis-THP compound. Molecules 2011; 16:5362-73. [PMID: 21709619 PMCID: PMC6264591 DOI: 10.3390/molecules16075362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 06/20/2011] [Accepted: 06/21/2011] [Indexed: 11/16/2022] Open
Abstract
A novel bis-iodurated polyether compound, based on an unprecedented tetra-THF backbone, has been isolated as a trace by-product of the oxidation of squalene with the catalytic system RuO₂(cat.)/NaIO₄. The double erythro configuration of the central portion of the molecule furnishes the first indirect support of the previously postulated pathway operating in the oxidative pentacyclization of the isoprenoid substrate. A bidirectional double oxidative bis-cyclization is invoked to explain the formation of this compound. The isolated substance was successfully subjected to a double rearrangement-ring expansion to give a novel bis-THF-bis-THP compound.
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Affiliation(s)
- Vincenzo Piccialli
- Dipartimento di Chimica Organica e Biochimica, Università degli Studi di Napoli "Federico II", Via Cynthia 4, 80126, Napoli, Italy; (S.Z.)
| | - Sabrina Zaccaria
- Dipartimento di Chimica Organica e Biochimica, Università degli Studi di Napoli "Federico II", Via Cynthia 4, 80126, Napoli, Italy; (S.Z.)
| | - Roberto Centore
- Dipartimento di Chimica ‘‘Paolo Corradini’’, Università degli Studi di Napoli ‘‘Federico II’’, Via Cinthia 4, 80126, Napoli, Italy; (R.C.); (A.T.)
| | - Angela Tuzi
- Dipartimento di Chimica ‘‘Paolo Corradini’’, Università degli Studi di Napoli ‘‘Federico II’’, Via Cinthia 4, 80126, Napoli, Italy; (R.C.); (A.T.)
| | - Nicola Borbone
- Dipartimento di Chimica delle Sostanze Naturali, Università degli Studi di Napoli "Federico II", Via D. Montesano 49, 80131, Napoli, Italy; (N.B.); (G.O.)
| | - Giorgia Oliviero
- Dipartimento di Chimica delle Sostanze Naturali, Università degli Studi di Napoli "Federico II", Via D. Montesano 49, 80131, Napoli, Italy; (N.B.); (G.O.)
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Hydride Shift Generated Oxonium Ions: Evidence for Mechanism and Intramolecular Trapping Experiments to Formtrans THF Derivatives. Angew Chem Int Ed Engl 2008; 47:2869-71. [DOI: 10.1002/anie.200705340] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Donohoe T, Williams O, Churchill G. Hydride Shift Generated Oxonium Ions: Evidence for Mechanism and Intramolecular Trapping Experiments to Formtrans THF Derivatives. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705340] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Kumar V, Gauniyal HM, Shaw AK. An iodocyclization approach toward diastereoselective synthesis of highly functionalized tetrasubstituted tetrahydrofurans with 2,5-trans and 2,5-cis relationships from pyranoside derived acyclic oximes. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.08.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Paquette LA, Ohmori N, Lowinger TB, Rogers RD. Vicinal tetrahydrofuranyl substitution of alkyl chains. Tetra-, penta-, and hexafunctionalized arrays. J Org Chem 2000; 65:4303-8. [PMID: 10891130 DOI: 10.1021/jo0001075] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The tetrakis (tetrahydrofuranyl) dialdehydes 14 and 19 are accessible by oxidative cleavage of extensively substituted cyclohexenes, which have in turn been assembled in a stereocontrolled manner. Reaction of 14 with an excess of the Normant reagent followed by ring closure resulted in conversion to the hexafunctionalized polyether 15. Allylindation of the same dialdehyde gave rise to lactol 16, a reactivity pattern that was essentially duplicated when 19 was treated with the Normant reagent. Attempts to add allylmagnesium bromide to 19 resulted in operation of a Tishchenko reaction with formation of lactone 23. By means of X-ray diffraction analysis, it was possible to ascertain the conformation adopted by 20 and 23 in the solid state. In addition, 15 was shown to populate a conformation in which the oxygen are very predominantly in gauche arrangements, this structural preorganization taking place in the absence of any metal ions.
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Affiliation(s)
- L A Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus 43210, USA.
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12
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Harrowven DC, Sibley GE. The sequential annulation of an arene with a tetrahydrofuran provides a new route to the pseudopterosins. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)01761-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Approaches to the D-E ring of the polyether antibiotic salinomycin using sharpless asymmetric dihydroxylation. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(97)10420-3] [Citation(s) in RCA: 19] [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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14
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Frederickson M, Grigg R. ELECTROPHILE MEDIATED HETEROATOM CYCLIZATIONS ONTO C-C π-BONDS. PART 1: HALOGEN AND CHALCOGEN MEDIATED CYCLIZATION. ORG PREP PROCED INT 1997. [DOI: 10.1080/00304949709355172] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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