1
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Nagamalla S, Dhokale RA, Seidl FJ, Mague JT, Sathyamoorthi S. Unusual Rearrangement-Remercuration Reactions of Allylic Silanols. Org Chem Front 2021; 8:5361-5368. [PMID: 34868598 DOI: 10.1039/d1qo01008e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We present the first examples of rearrangement reactions of allylic silanol substrates into linear ketone and 5-membered cyclic silanediol organomercurial products. Both reactions are mediated by Hg(OTf)2 but differ in the use of base, solvent, and temperature. The substrate scope of both transformations was explored, and the product organomercurials were shown to be valuable synthons. Mechanistic studies suggest that both products are the result of a series of transformations, cascading in one pot. DFT analysis provides a basis for understanding the rearrangement of a 6-endo intermediate into the 5-exo cyclic silanediol product.
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Affiliation(s)
- Someshwar Nagamalla
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas, United States, 66047
| | - Ranjeet A Dhokale
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas, United States, 66047
| | | | - Joel T Mague
- Department of Chemistry, Tulane University, New Orleans, Louisiana, United States, 70118
| | - Shyam Sathyamoorthi
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas, United States, 66047
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2
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Yu B, Wang S. Solving the Structural Puzzles of Amipurimycin and Miharamycins Enabled by Stereodivergent Total Synthesis. CHEM REC 2021; 21:3015-3028. [PMID: 33835677 DOI: 10.1002/tcr.202100057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/30/2021] [Accepted: 03/30/2021] [Indexed: 11/09/2022]
Abstract
The efforts toward the synthesis of amipurimycin and miharamycin A/B, two peptidyl nucleoside antibiotics bearing a unique nine carbon C3-branched pyranosyl amino acid core, are accounted. Highlighted is our stereodivergent total synthesis of all the possible diastereoisomers of amipurimycin, which has enabled us to solve the structural puzzles of amipurimycin and miharamycin A/B after ∼50 years of their discovery.
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Affiliation(s)
- Biao Yu
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China.,State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Shengyang Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.,Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
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3
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Abstract
We present the first examples of tethered olefin functionalization reactions using a silanol auxiliary. A range of allylic alcohols are readily condensed with di-tert-butylsilyl bis(trifluoromethanesulfonate) to form allylic silanols. When treated with Hg(OTf)2 and NaHCO3, these silanols easily transform into cyclic silanediol organomercurial compounds. In most cases, the reactions are exquisitely diastereoselective. The scale can be increased more than 10-fold without a loss of yield and selectivity. We demonstrate that the silanediols are versatile synthons for a variety of further reactions.
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Affiliation(s)
- Anand H Shinde
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Shyam Sathyamoorthi
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
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4
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Mishra UK, Ramesh NG. A glycal based approach to the synthesis of (+)-bulgecinine, 3-hydroxy-2,5-dihydroxymethylpyrrolidine and 2-oxapyrrolizidin-3-one. Carbohydr Res 2020; 489:107931. [PMID: 32088502 DOI: 10.1016/j.carres.2020.107931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 11/25/2022]
Abstract
A glycal based synthesis of (+)-bulgecinine, 3-hydroxy-2,5-dihydroxymethylpyrrolidine and 2-oxapyrrolizidin-3-ones proceeding through a common intermediate is reported. The key step in the work presented here is a two-step conversion of 4,6-di-O-benzyl-d-glucal to 2,3-dideoxy-2-tosylamido-d-glucose. This manuscript reports the first carbohydrate based approach to the synthesis of (+)-bulgecinine and the whole sequence has been accomplished with complete stereochemical integrity without the formation of mixture of products in any of these steps.
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Affiliation(s)
- Umesh K Mishra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Namakkal G Ramesh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
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5
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Wang S, Zhang Q, Zhao Y, Sun J, Kang W, Wang F, Pan H, Tang G, Yu B. The Miharamycins and Amipurimycin: their Structural Revision and the Total Synthesis of the Latter. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905723] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Shengyang Wang
- Innovation Research Institute of Traditional Chinese MedicineShanghai University of Traditional Chinese Medicine 1200 Cai Lun Road Shanghai 201203 China
| | - Qingju Zhang
- National Engineering Research Centre for Carbohydrate SynthesisJiangxi Normal University Nanchang 330022 China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Jiansong Sun
- National Engineering Research Centre for Carbohydrate SynthesisJiangxi Normal University Nanchang 330022 China
| | - Wenjia Kang
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Fei Wang
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Haixue Pan
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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6
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Wang S, Zhang Q, Zhao Y, Sun J, Kang W, Wang F, Pan H, Tang G, Yu B. The Miharamycins and Amipurimycin: their Structural Revision and the Total Synthesis of the Latter. Angew Chem Int Ed Engl 2019; 58:10558-10562. [PMID: 31190371 DOI: 10.1002/anie.201905723] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Indexed: 01/30/2023]
Abstract
The structural puzzle of amipurimycin, a peptidyl nucleoside antibiotic, is solved by total synthesis and X-ray diffraction analysis, with the originally proposed configurations at C3' and C8' inverted and those at C6', C2'', and C3'' corrected. A similar structural revision of the relevant miharamycins is proposed via chemical transformations and then validated by X-ray diffraction analysis. The miharamycins bear an unusual trans-fused dioxabicyclo[4.3.0]nonane sugar scaffold, which was previously assigned as being in the cis configuration.
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Affiliation(s)
- Shengyang Wang
- Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Road, Shanghai, 201203, China
| | - Qingju Zhang
- National Engineering Research Centre for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Jiansong Sun
- National Engineering Research Centre for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Wenjia Kang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Fei Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Haixue Pan
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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7
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
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8
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Tomoshige S, Dik DA, Akabane-Nakata M, Madukoma CS, Fisher JF, Shrout JD, Mobashery S. Total Syntheses of Bulgecins A, B, and C and Their Bactericidal Potentiation of the β-Lactam Antibiotics. ACS Infect Dis 2018; 4:860-867. [PMID: 29716193 PMCID: PMC5996343 DOI: 10.1021/acsinfecdis.8b00105] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
![]()
The bulgecins are iminosaccharide
secondary metabolites of the Gram-negative bacterium Paraburkholderia
acidophila and inhibitors of lytic transglycosylases of bacterial
cell-wall biosynthesis and remodeling. The activities of the bulgecins
are intimately intertwined with the mechanism of a cobiosynthesized
β-lactam antibiotic. β-Lactams inhibit the penicillin-binding
proteins, enzymes also critical to cell-wall biosynthesis. The simultaneous
loss of the lytic transglycosylase (by bulgecin) and penicillin-binding
protein (by β-lactams) activities results in deformation of
the septal cell wall, observed microscopically as a bulge preceding
bacterial cell lysis. We describe a practical synthesis of the three
naturally occurring bulgecin iminosaccharides and their mechanistic
evaluation in a series of microbiological studies. These studies identify
potentiation by the bulgecin at subminimum inhibitory concentrations
of the β-lactam against three pathogenic Gram-negative bacteria
and establish for the first time that this potentiation results in
a significant increase in the bactericidal efficacy of a clinical
β-lactam.
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Affiliation(s)
- Shusuke Tomoshige
- Department of Chemistry & Biochemistry, University of Notre Dame, 352 McCourtney Hall, Notre Dame, Indiana 46556, United States
| | - David A. Dik
- Department of Chemistry & Biochemistry, University of Notre Dame, 352 McCourtney Hall, Notre Dame, Indiana 46556, United States
| | - Masaaki Akabane-Nakata
- Department of Chemistry & Biochemistry, University of Notre Dame, 352 McCourtney Hall, Notre Dame, Indiana 46556, United States
| | - Chinedu S. Madukoma
- Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
| | - Jed F. Fisher
- Department of Chemistry & Biochemistry, University of Notre Dame, 352 McCourtney Hall, Notre Dame, Indiana 46556, United States
| | - Joshua D. Shrout
- Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Shahriar Mobashery
- Department of Chemistry & Biochemistry, University of Notre Dame, 352 McCourtney Hall, Notre Dame, Indiana 46556, United States
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9
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Wang S, Sun J, Zhang Q, Cao X, Zhao Y, Tang G, Yu B. Amipurimycin: Total Synthesis of the Proposed Structures and Diastereoisomers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shengyang Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jiansong Sun
- The National Engineering Research Centre for Carbohydrate Synthesis; Jiangxi Normal University; Nanchang 330022 China
| | - Qingju Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xin Cao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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10
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Wang S, Sun J, Zhang Q, Cao X, Zhao Y, Tang G, Yu B. Amipurimycin: Total Synthesis of the Proposed Structures and Diastereoisomers. Angew Chem Int Ed Engl 2018; 57:2884-2888. [DOI: 10.1002/anie.201800169] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Shengyang Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jiansong Sun
- The National Engineering Research Centre for Carbohydrate Synthesis; Jiangxi Normal University; Nanchang 330022 China
| | - Qingju Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xin Cao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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11
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α-Amino acids with electrically charged and polar uncharged side chains as chiral synthon: Application to the synthesis of bioactive alkaloids (1996-Dec, 2013). Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Natori Y, Imahori T, Yoshimura Y. Development of Stereoselective Synthesis of Biologically Active Nitrogen-heterocyclic Compounds: Applications for Syntheses of Natural Product and Organocatalyst. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.335] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshihiro Natori
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University
| | | | - Yuichi Yoshimura
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University
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13
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Natori Y, Kikuchi S, Kondo T, Saito Y, Yoshimura Y, Takahata H. Asymmetric synthesis of 2,5-disubstituted 3-hydroxypyrrolidines based on stereodivergent intramolecular iridium-catalyzed allylic aminations. Org Biomol Chem 2014; 12:1983-94. [DOI: 10.1039/c3ob42229a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Ko J, Molinski TF. D-Glucosamine-derived synthons for assembly of L-threo-sphingoid bases. Total synthesis of rhizochalinin C. J Org Chem 2013; 78:498-505. [PMID: 23227909 PMCID: PMC3548972 DOI: 10.1021/jo302355t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A five-step transformation of D-glucosamine, commencing with indium-mediated Barbier reaction without isolation of intermediates, into (R,R)-2-aminohex-5-ene-1,3-diol in 45-51% is described. The latter is a useful synthon for assembly of L-threo-sphingoid bases: long-chain aminoalkanols and aminoalkanediols with configurations antipodal to that found in mammalian D-erythro-sphingosine but prevalent among invertebrate-derived sphingolipids. The utility of the method is demonstrated by the first total synthesis of rhizochalinin C, the long-chain, "two-headed" sphingoid base aglycon of the natural product rhizochalin C from the marine sponge Rhizochalina incrustata.
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Affiliation(s)
- Jaeyoung Ko
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0358, USA
- Material Science Medical Beauty Research Institute Amorepacific Corporation R&D Center, Yongin 446-729, Republic of Korea
| | - Tadeusz F. Molinski
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0358, USA
- Material Science Medical Beauty Research Institute Amorepacific Corporation R&D Center, Yongin 446-729, Republic of Korea
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15
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Wang JT, Lin TC, Chen YH, Lin CH, Fang JM. Polyhydroxylated pyrrolidine and 2-oxapyrrolizidine as glycosidase inhibitors. MEDCHEMCOMM 2013. [DOI: 10.1039/c3md00033h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Ramezani M, White RL. Enantioselective catabolism of racemic serine: preparation of d-serine using whole cells of Fusobacterium nucleatum. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.07.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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18
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Sampath M, Lee PYB, Loh TP. Phosphine-catalyzed one-pot isomerization of 3-alkynoates and [2 + 3]-cycloaddition with imines: formal synthesis of Securinega alkaloid (±)-allosecurinine. Chem Sci 2011. [DOI: 10.1039/c1sc00311a] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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19
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Chemo- and diastereoselective control for a flexible approach to (5S,6S)-6-alkyl-5-benzyloxy-2-piperidinones. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.021] [Citation(s) in RCA: 11] [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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20
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Müller TE, Hultzsch KC, Yus M, Foubelo F, Tada M. Hydroamination: Direct Addition of Amines to Alkenes and Alkynes. Chem Rev 2008; 108:3795-892. [PMID: 18729420 DOI: 10.1021/cr0306788] [Citation(s) in RCA: 1644] [Impact Index Per Article: 102.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas E. Müller
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kai C. Hultzsch
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Miguel Yus
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Francisco Foubelo
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mizuki Tada
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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21
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Khalaf JK, VanderVelde DG, Datta A. Synthetic Studies on Ezomycins: Stereoselective Route to a Thymine Octosyl Nucleoside Derivative. J Org Chem 2008; 73:5977-84. [DOI: 10.1021/jo801050r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juhienah K. Khalaf
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045
| | - David G. VanderVelde
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045
| | - Apurba Datta
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045
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22
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Abraham E, Davies SG, Roberts PM, Russell AJ, Thomson JE. Jaspine B (pachastrissamine) and 2-epi-jaspine B: synthesis and structural assignment. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.04.017] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Toumi M, Couty F, Evano G. A practical route to enantiopure 3-hydroxy-pyrrolidines: application to a straightforward synthesis of (−)-bulgecinine. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.12.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Poon KWC, Lovell KM, Dresner KN, Datta A. Trimethylsilyl Trifluoromethanesulfonate (TMSOTf) Assisted Facile Deprotection of N,O-Acetonides. J Org Chem 2007; 73:752-5. [DOI: 10.1021/jo7021923] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kevin W. C. Poon
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045
| | - Kimberly M. Lovell
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045
| | - Kendra N. Dresner
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045
| | - Apurba Datta
- Department of Medicinal Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045
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Khalaf JK, Datta A. A concise, asymmetric synthesis of (2R,3R)-3-hydroxyaspartic acid. Amino Acids 2007; 35:507-10. [PMID: 17914600 DOI: 10.1007/s00726-007-0595-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Accepted: 07/23/2007] [Indexed: 10/22/2022]
Abstract
3-Hydroxyaspartic acid and its derivatives are found both in the free form and as peptide constituents in various microorganisms and fungi. Considering the biological importance of this amino acid and its potential utility as a multifunctional building block in organic syntheses, we have developed a short-step, asymmetric synthetic route to a strategically protected 3-hydroxyaspartic acid derivative in enantiopure form. The key steps in the synthesis involve, Sharpless asymmetric aminohydroxylation of commercially available trans-ethyl cinnamate, and, utilization of the phenyl group as a masked carboxylic acid synthon towards construction of the complete structural framework of the title compound.
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Affiliation(s)
- J K Khalaf
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, USA
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Spengler J, Böttcher C, Albericio F, Burger K. Hexafluoroacetone as Protecting and Activating Reagent: New Routes to Amino, Hydroxy, and Mercapto Acids and Their Application for Peptide and Glyco- and Depsipeptide Modification. Chem Rev 2006; 106:4728-46. [PMID: 17091933 DOI: 10.1021/cr0509962] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jan Spengler
- Institute for Research in Biomedicine, Barcelona Science Park, Josep Samitier 1-5, E-08028 Barcelona, Spain.
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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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Chabaud P, Pèpe G, Courcambeck J, Camplo M. Stereoselective synthesis of (3S,4S)-tert-butyl-N-Boc-3-ethyl-4-hydroxy-l-prolinate and (3S,4R)-tert-butyl-N-Boc-3-ethyl-4-hydroxy-l-prolinate. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chavan SP, Praveen C, Sharma P, Kalkote U. An efficient stereoselective synthesis of (2S,4S,5R)-(−)- and (2R,4R,5S)-(+)-bulgecinine. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2004.11.101] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Singh OV, Han H. Tandem Overman Rearrangement and Intramolecular Amidomercuration Reactions. Stereocontrolled Synthesis of cis- and trans-2,6-Dialkylpiperidines. Org Lett 2004; 6:3067-70. [PMID: 15330589 DOI: 10.1021/ol048961w] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Hg(II)-mediated tandem Overman rearrangement and intramolecular amidomercuration reactions were proven to provide a convenient tool for the stereoselective synthesis of cis- and trans-2,6-disubstituted piperidines. Thus, upon treatment with Hg(OTFA)(2) in THF, the trichloroacetimidate 1 directly transformed into the 2,6-dialkyl piperidine 2 with almost exclusive trans selectivity. The amiodomercuration reaction of the carbamate 7 by Hg(OTFA)(2) in nitromethane showed an excellent cis selectivity. Also reported is the stereoselective synthesis of solenopsin A and isosolenopsin A.
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Affiliation(s)
- Om V Singh
- Department of Chemistry, The University of Texas at San Antonio, 6900 N. Loop 1604 West, San Antonio, Texas 78249, USA
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