1
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Zhang WW, Li BJ. Enantioselective Hydrosilylation of β,β-Disubstituted Enamides to Construct α-Aminosilanes with Vicinal Stereocenters. Angew Chem Int Ed Engl 2023; 62:e202214534. [PMID: 36344453 DOI: 10.1002/anie.202214534] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Indexed: 11/09/2022]
Abstract
Despite the advances in the area of catalytic alkene hydrosilylation, the enantioselective hydrosilylation of alkenes bearing a heteroatom substituent is scarce. Here we report a rhodium-catalyzed hydrosilylation of β,β-disubstituted enamides to directly afford valuable α-aminosilanes in a highly regio-, diastereo-, and enantioselective manner. Stereodivergent synthesis could be achieved by regulating substrate geometry and ligand configuration to generate all the possible stereoisomers in high enantio-purity.
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Affiliation(s)
- Wen-Wen Zhang
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Bi-Jie Li
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing, 100084, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China.,Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
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2
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Nomula R, Pratapure MS, Kontham R. Studies Directed Toward the Total Synthesis of Nannocystin A. ChemistrySelect 2022. [DOI: 10.1002/slct.202203893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rajesh Nomula
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
| | - Madhukar S. Pratapure
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Ravindar Kontham
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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3
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Hattori T, Yamamoto H. Synthesis of Silacyclic Dipeptides: Peptide Elongation at Both N- and C-Termini of Dipeptide. J Am Chem Soc 2022; 144:1758-1765. [DOI: 10.1021/jacs.1c11260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tomohiro Hattori
- Peptide Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
| | - Hisashi Yamamoto
- Peptide Research Center, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
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4
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Hansen AH, Christensen HB, Pandey SK, Sergeev E, Valentini A, Dunlop J, Dedeo D, Fratta S, Hudson BD, Milligan G, Ulven T, Rexen Ulven E. Structure-Activity Relationship Explorations and Discovery of a Potent Antagonist for the Free Fatty Acid Receptor 2. ChemMedChem 2021; 16:3326-3341. [PMID: 34288488 DOI: 10.1002/cmdc.202100356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/13/2021] [Indexed: 11/12/2022]
Abstract
Free fatty acid receptor 2 (FFA2) is a sensor for short-chain fatty acids that has been identified as an interesting potential drug target for treatment of metabolic and inflammatory diseases. Although several ligand series are known for the receptor, there is still a need for improved compounds. One of the most potent and frequently used antagonists is the amide-substituted phenylbutanoic acid known as CATPB ( 1 ). We here report the structure-activity relationship exploration of this compound, leading to the identification of homologues with increased potency. The preferred compound 37 (TUG-1958) was found, besides improved potency, to have high solubility and favorable pharmacokinetic properties.
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Affiliation(s)
- Anders Højgaard Hansen
- University of Southern Denmark: Syddansk Universitet, Department of Physics,Chemistry and Pharmacy, DENMARK
| | - Henriette B Christensen
- University of Southern Denmark: Syddansk Universitet, Department of Physics, Chemsitry and Pharmacy, DENMARK
| | - Sunil K Pandey
- University of Southern Denmark: Syddansk Universitet, FKF, DENMARK
| | - Eugenia Sergeev
- University of Glasgow, Center for Translational Pharmacology, UNITED KINGDOM
| | - Alice Valentini
- University of Copenhagen: Kobenhavns Universitet, Department of Drug Design and Pharmacoloy, DENMARK
| | - Julia Dunlop
- University of Glasgow, Center for Translational Medicine, DENMARK
| | - Domonkos Dedeo
- University of Glasgow, Center for Translational Research, DENMARK
| | - Simone Fratta
- University of Copenhagen: Kobenhavns Universitet, Department of Drug Design and Pharmacology, DENMARK
| | - Brian D Hudson
- University of Glasgow, Center for Translational Medicine, DENMARK
| | - Graeme Milligan
- University of Glasgow, Center for Translational Research, DENMARK
| | - Trond Ulven
- University of Copenhagen, Department of Drug Design and Pharmacology, Jagtvej 162, DK-2100, Copenhagen, DENMARK
| | - Elisabeth Rexen Ulven
- University of Copenhagen: Kobenhavns Universitet, Department of Drug Design and Pharmacology, DENMARK
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5
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Shen J, Gao Q, Wang G, Tong M, Chen L, Xu S. Cu‐NHC‐Catalyzed Enantioselective Conjugate Silyl addition to Indol‐1‐ylacrylate Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201903570] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jun‐Jian Shen
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Qian Gao
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Guangzhu Wang
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Min Tong
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Lili Chen
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
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6
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Zhang Y, Tong M, Gao Q, Zhang P, Xu S. NHC-copper-catalyzed asymmetric conjugate silylation of access chiral α-aminosilanes. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Shi Y, Gao Q, Xu S. NHC-Copper-Catalyzed Asymmetric Dearomative Silylation of Indoles. J Org Chem 2018; 83:14758-14767. [PMID: 30358397 DOI: 10.1021/acs.joc.8b02308] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We report an asymmetric dearomative silylation reaction of 3-acylindoles using a chiral NHC-copper(I) complex as catalyst to afford a range of cyclic α-aminosilanes with high regio- and enantioselectivity. Initial mechanistic studies revealed that the observed high diastereoselectivity was attributed to the facile epimerization of the 3-acyl group. We also demonstrated that the product could be used as a versatile precursor for the synthesis of functionalized indolines in high enantiomeric purity.
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Affiliation(s)
- Yongjia Shi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Lanzhou 73000 , China
| | - Qian Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Lanzhou 73000 , China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Lanzhou 73000 , China.,Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education , Hangzhou Normal University , Hangzhou 311121 , P. R. China
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8
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Zhou W, Nie XD, Zhang Y, Si CM, Zhou Z, Sun X, Wei BG. A practical approach to asymmetric synthesis of dolastatin 10. Org Biomol Chem 2018; 15:6119-6131. [PMID: 28682414 DOI: 10.1039/c7ob01395g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Dolastatin 10, an antineoplastic agent for cancer chemotherapy, is a linear peptide possessing N,N-dimethyl Val-OH, l-valine, (3R,4S,5S)-dolaisoleucine, (2R,3R,4S)-dolaproine and (S)-dolaphenine. Our efficient synthesis includes the following three key features: (1) SmI2-induced cross-coupling was employed to couple aldehyde 11 with (S)-N-tert-butanesulfinyl imine 12 to generate the required stereocenters of Dap (7); (2) asymmetric addition of chiral N-sulfinyl imine 10 provided a straightforward approach to the synthesis of the protected Doe ((S,S)-8); (3) a practical method to the key subunit Val-Dil (24a) has been established as an alternative synthetic route for the synthesis of this challenging chemical structure.
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Affiliation(s)
- Wen Zhou
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai, 201203, China.
| | - Xiao-Di Nie
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai, 201203, China.
| | - Yu Zhang
- College of Energy, Xiangan campus of Xiamen University, Xiamen, Fujian 361102, China
| | - Chang-Mei Si
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai, 201203, China.
| | - Zhu Zhou
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai, 201203, China.
| | - Xun Sun
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai, 201203, China.
| | - Bang-Guo Wei
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai, 201203, China.
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9
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Lazareva NF, Nikonov АY. α-Carbofunctional silanols: synthesis, structure, properties. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1867-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Abstract
Application of silyl functionalities is one of the most promising strategies among various ‘elements chemistry’ approaches for the development of novel and distinctive drug candidates. Replacement of one or more carbon atoms of various biologically active compounds with silicon (so-called sila-substitution) has been intensively studied for decades, and is often effective for alteration of activity profile and improvement of metabolic profile. In addition to simple C/Si exchange, several novel approaches for utilizing silicon in medicinal chemistry have been suggested in recent years, focusing on the intrinsic differences between silicon and carbon. Sila-substitution offers great potential for enlarging the chemical space of medicinal chemistry, and provides many options for structural development of drug candidates.
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11
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Nakagawa Y, Chanthamath S, Fujisawa I, Shibatomi K, Iwasa S. Ru(ii)-Pheox-catalyzed Si–H insertion reaction: construction of enantioenriched carbon and silicon centers. Chem Commun (Camb) 2017; 53:3753-3756. [PMID: 28304026 DOI: 10.1039/c7cc01070b] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We established a highly enantioselective Si–H insertion reaction to construct chiral centers at the carbon and silicon atoms, using a Ru(ii)–Pheox catalyst.
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Affiliation(s)
- Yoko Nakagawa
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Soda Chanthamath
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Ikuhide Fujisawa
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Kazutaka Shibatomi
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
| | - Seiji Iwasa
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi
- Japan
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12
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Kato K, Hirano K, Miura M. Synthesis of β-Boryl-α-Aminosilanes by Copper-Catalyzed Aminoboration of Vinylsilanes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608139] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kodai Kato
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Koji Hirano
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Masahiro Miura
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; Suita Osaka 565-0871 Japan
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13
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Kato K, Hirano K, Miura M. Synthesis of β-Boryl-α-Aminosilanes by Copper-Catalyzed Aminoboration of Vinylsilanes. Angew Chem Int Ed Engl 2016; 55:14400-14404. [PMID: 27754577 DOI: 10.1002/anie.201608139] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Indexed: 01/31/2023]
Abstract
A copper-catalyzed regioselective and stereospecific aminoboration of vinylsilanes with bis(pinacolato)diboron (pinB-Bpin) and hydroxylamines has been developed. In the presence of a CuCl/MeO-dppbz catalyst, the boryl group and amino group are incorporated at the β position and α position, respectively, and the corresponding β-boryl-α-aminosilanes are obtained with good diastereoselectivity. The boryl group is a good latent functional group, and subsequent manipulations provide a variety of β-functionalized α-aminosilanes of great potential in medicinal chemistry. Additionally, preliminary application to asymmetric catalysis is also described.
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Affiliation(s)
- Kodai Kato
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.
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14
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Wieting JM, Fisher TJ, Schafer AG, Visco MD, Gallucci JC, Mattson AE. Preparation and Catalytic Activity of BINOL-Derived Silanediols. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403441] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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15
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Niljianskul N, Zhu S, Buchwald SL. Enantioselective Synthesis of α-Aminosilanes by Copper-Catalyzed Hydroamination of Vinylsilanes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410326] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Niljianskul N, Zhu S, Buchwald SL. Enantioselective synthesis of α-aminosilanes by copper-catalyzed hydroamination of vinylsilanes. Angew Chem Int Ed Engl 2014; 54:1638-41. [PMID: 25475991 DOI: 10.1002/anie.201410326] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Indexed: 12/14/2022]
Abstract
The synthesis of α-aminosilanes by a highly enantio- and regioselective copper-catalyzed hydroamination of vinylsilanes is reported. The system employs Cu-DTBM-SEGPHOS as the catalyst, diethoxymethylsilane as the stoichiometric reductant, and O-benzoylhydroxylamines as the electrophilic nitrogen source. This hydroamination reaction is compatible with differentially substituted vinylsilanes, thus providing access to amino acid mimics and other valuable chiral organosilicon compounds.
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Affiliation(s)
- Nootaree Niljianskul
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (USA)
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17
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Hensel A, Nagura K, Delvos LB, Oestreich M. Enantioselective addition of silicon nucleophiles to aldimines using a preformed NHC-Copper(I) complex as the catalyst. Angew Chem Int Ed Engl 2014; 53:4964-7. [PMID: 24700790 DOI: 10.1002/anie.201402086] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Indexed: 01/01/2023]
Abstract
A remaining major challenge in the asymmetric addition of silicon nucleophiles to typical prochiral acceptors, the enantioselective 1,2-addition to aldimines, is addressed. Activation of the SiB bond in the silicon pronucleophile by a copper(I) alkoxide with McQuade's chiral six-membered N-heterocyclic carbene as a supporting ligand releases the silicon nucleophile, which adds to various aldimines with high levels of enantioselectivity. The new method provides a catalytic asymmetric access to α-silylated amines.
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Affiliation(s)
- Alexander Hensel
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin (Germany) http://www.organometallics.tu-berlin.de
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18
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Hensel A, Nagura K, Delvos LB, Oestreich M. Enantioselektive Addition von Siliciumnukleophilen an Aldimine mit einem präformierten NHC-Kupfer(I)-Komplex als Katalysator. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402086] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Auvil TJ, Schafer AG, Mattson AE. Design Strategies for Enhanced Hydrogen-Bond Donor Catalysts. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400035] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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21
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Min GK, Hernández D, Skrydstrup T. Efficient routes to carbon-silicon bond formation for the synthesis of silicon-containing peptides and azasilaheterocycles. Acc Chem Res 2013; 46:457-70. [PMID: 23214467 DOI: 10.1021/ar300200h] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Silasubstitution, where silicon is substituted for carbon at specific sites of the substrate, has become a growing practice in medicinal chemistry. Introducing silicon into bioactive compounds provides slight physical and electronic alterations to the parent compound, which in certain instances could make the substrate a more viable candidate for a drug target. One application is in the field of protease inhibition. Various silane diol isosteres can act as potent inhibitors of aspartic and metalloproteases because of their ability to mimic the high-energy tetrahedral intermediate in peptide bond hydrolysis. In particular, since 1998, the Sieburth group has prepared a number of functionalized peptide silane diol isosteres. In a seminal study, they demonstrated that these molecules can bind to the active site of the enzymes. Inspired by these results, we initiated a study to develop a concise and straightforward route to access highly functionalized silicon diol based peptidomimetic analogs, which we describe in this Account. The synthesis of such analogs is challenging because the dipeptide mimics require the formation of two carbon-silicon bonds as well as two chiral carbon centers. Our first strategy was to assemble the two C-Si bonds from diphenylsilane through an initial regioselective hydrosilylation step of a terminal alkene, followed by lithiation of the formed alkyldiphenylsilane by a simple lithium metal reduction. Subsequent diastereoselective addition of this silyllithium species to a tert-butylsulfinimine provided a rapid method to assemble the dipeptide mimic with stereochemical control at the new chiral carbon center adjacent to the silicon. This strategy worked with a wide range of functional groups. However, there were some limitations with the more elaborate targets. In particular, we needed to exchange the phenyl groups of the diphenylsilane with aryl groups that were more labile under acidic conditions in order to introduce Si-O bonds in the end product. We demonstrated that a variety of Ar(2)SiH(2) compounds with methyl substituents on the aromatic core could effectively undergo hydrosilylation and reductive lithiation with a soluble reducing agent, lithium naphthalenide. The electron-rich aromatic groups were more acid labile and, depending on the conditions, could produce either the silane diol or the silanol. In an alternative strategy, we used a highly regioselective Rh-catalyzed sequential double hydrosilylation to form the two C-Si bonds with a single catalyst. This approach is a more efficient, atom economical way to synthesize a wider range of highly functionalized organosilanes with the added possibility of extending this method into an asymmetric protocol. By this method, various functional groups that were not previously tolerated in the lithiation protocol, including OBn, OAc, furyl, and thiophenes, could now be incorporated. Hydrosilylation of a terminal olefin and a peptide functionalized with an enamide at the C-terminus achieved the desired silane in high yields in a one pot reaction without compromising the stereochemical integrity of the peptide. As an extension of this work, we used these methods to efficiently generate a variety of chiral azasilaheterocycles, including silapiperidines and silaindolizidines.
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Affiliation(s)
- Geanna K. Min
- Center for Insoluble Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Dácil Hernández
- Center for Insoluble Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Troels Skrydstrup
- Center for Insoluble Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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22
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Affiliation(s)
- Annaliese K. Franz
- Department of Chemistry, University of California—Davis, One Shields Avenue, Davis,
California, United States
| | - Sean O. Wilson
- Department of Chemistry, University of California—Davis, One Shields Avenue, Davis,
California, United States
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23
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Madsen JLH, Andersen TL, Santamaria S, Nagase H, Enghild JJ, Skrydstrup T. Synthesis and Evaluation of Silanediols as Highly Selective Uncompetitive Inhibitors of Human Neutrophil Elastase. J Med Chem 2012; 55:7900-8. [DOI: 10.1021/jm301000k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julie L. H. Madsen
- Center for Insoluble Protein
Structures, Department of Chemistry, and Interdisciplinary Nanoscience
Center, Aarhus University, Langelandsgade
140, 8000 Aarhus C, Denmark
| | - Thomas L. Andersen
- Center for Insoluble Protein
Structures, Department of Chemistry, and Interdisciplinary Nanoscience
Center, Aarhus University, Langelandsgade
140, 8000 Aarhus C, Denmark
| | - Salvatore Santamaria
- Faculty of Medicine, Imperial College London, 65 Aspenlea Road, London W6
8LH, U.K
- The Kennedy Institute
of Rheumatology,
Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal
Sciences, University of Oxford, 65 Aspenlea
Road, London W6 8LH, U.K
| | - Hideaki Nagase
- Faculty of Medicine, Imperial College London, 65 Aspenlea Road, London W6
8LH, U.K
- The Kennedy Institute
of Rheumatology,
Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal
Sciences, University of Oxford, 65 Aspenlea
Road, London W6 8LH, U.K
| | - Jan J. Enghild
- Center for Insoluble Protein
Structures, Department of Molecular Biology and Genetics, and Interdisciplinary
Nanoscience Center, Aarhus University,
Gustav Wieds Vej 10, 8000 Aarhus C, Denmark
| | - Troels Skrydstrup
- Center for Insoluble Protein
Structures, Department of Chemistry, and Interdisciplinary Nanoscience
Center, Aarhus University, Langelandsgade
140, 8000 Aarhus C, Denmark
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24
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Singh S, Sieburth SM. Serine protease inhibition by a silanediol peptidomimetic. Org Lett 2012; 14:4422-5. [PMID: 22894760 DOI: 10.1021/ol301933n] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Silanediol peptidomimetics are demonstrated to inhibit a serine protease. Asymmetric synthesis of the inhibitor was accomplished using Brown hydroboration and CBS reduction of an acylsilane intermediate. The silanediol product was found to inhibit the serine protease chymotrypsin with a K(i) of 107 nM. Inhibition of the enzyme may involve exchange of a silane hydroxyl with the active site serine nucleophile, contrasting with previous silanediol protease inhibitors.
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Affiliation(s)
- Swapnil Singh
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, USA
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25
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26
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Min GK, Skrydstrup T. Regioselective Rh(I)-Catalyzed Sequential Hydrosilylation toward the Assembly of Silicon-Based Peptidomimetic Analogues. J Org Chem 2012; 77:5894-906. [DOI: 10.1021/jo300904z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Geanna K. Min
- Center for Insoluble Protein Structures,
Department
of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus
C, Denmark
| | - Troels Skrydstrup
- Center for Insoluble Protein Structures,
Department
of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus
C, Denmark
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27
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Beemelmanns C, Husmann R, Whelligan DK, Özçubukçu S, Bolm C. Planar-Chiral Bis-silanols and Diols as H-Bonding Asymmetric Organocatalysts. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200548] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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28
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Shainyan BA, Kirpichenko SV, Shlykov SA, Kleinpeter E. Structure and Conformational Properties of 1,3,3-Trimethyl-1,3-Azasilinane: Gas Electron Diffraction, Dynamic NMR, and Theoretical Study. J Phys Chem A 2011; 116:784-9. [DOI: 10.1021/jp2110852] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Bagrat A. Shainyan
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of the Russian Academy of Science, 1 Favorsky Street, 664033, Irkutsk, Russian Federation
| | - Svetlana V. Kirpichenko
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of the Russian Academy of Science, 1 Favorsky Street, 664033, Irkutsk, Russian Federation
| | - Sergei A. Shlykov
- Department of Physics, Ivanovo State University of Chemistry and Technology, Engels Avenue, 7, 153000, Ivanovo, Russian Federation
| | - Erich Kleinpeter
- Chemisches Institut der Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam (Golm), Germany
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29
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Bo Y, Singh S, Duong HQ, Cao C, Sieburth SM. Efficient, enantioselective assembly of silanediol protease inhibitors. Org Lett 2011; 13:1787-9. [PMID: 21381688 PMCID: PMC3064730 DOI: 10.1021/ol2002978] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A five-step assembly of silicon-protected dipeptide mimics from commercially available reagents is described. This methodology makes silanediol protease inhibitors readily available for the first time. The sequence features asymmetric hydrosilylation, a novel reduction of a silyl ether to a silyllithium reagent, and addition of this dianion to a sulfinimine, to produce the complete inhibitor skeleton with full control of stereochemistry. Oxidation of the primary alcohol to an acid completes the synthesis.
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Affiliation(s)
- Yingjian Bo
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122
| | - Swapnil Singh
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122
| | - Hoan Quoc Duong
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122
| | - Cui Cao
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122
| | - Scott McN. Sieburth
- Department of Chemistry, Temple University, 1901 N 13th Street, Philadelphia, Pennsylvania 19122
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30
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Vyas DJ, Fröhlich R, Oestreich M. Activation of the Si−B Linkage: Copper-Catalyzed Addition of Nucleophilic Silicon to Imines. Org Lett 2011; 13:2094-7. [DOI: 10.1021/ol200509c] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Devendra J. Vyas
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Martin Oestreich
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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31
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Hernández D, Mose R, Skrydstrup T. Reductive Lithiation of Methyl Substituted Diarylmethylsilanes: Application to Silanediol Peptide Precursors. Org Lett 2011; 13:732-5. [DOI: 10.1021/ol102968g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dácil Hernández
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Rasmus Mose
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Troels Skrydstrup
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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32
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Ignatyev I, Montejo M, Ortega PGR, González JJL. Effect of substituents and hydrogen bonding on barrier heights in dehydration reactions of carbon and silicon geminal diols. Phys Chem Chem Phys 2011; 13:18507-15. [DOI: 10.1039/c1cp21580a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Husmann R, Jörres M, Raabe G, Bolm C. Silylated Pyrrolidines as Catalysts for Asymmetric Michael Additions of Aldehydes to Nitroolefins. Chemistry 2010; 16:12549-52. [DOI: 10.1002/chem.201001764] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ralph Husmann
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen (Germany), Fax: (+49) 241‐8092‐391
| | - Manuel Jörres
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen (Germany), Fax: (+49) 241‐8092‐391
| | - Gerhard Raabe
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen (Germany), Fax: (+49) 241‐8092‐391
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen (Germany), Fax: (+49) 241‐8092‐391
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34
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Hernández D, Nielsen L, Lindsay KB, Ángeles López-García M, Bjerglund K, Skrydstrup T. Stereocontrolled Synthesis of 2-Substituted-1,3-Azasilaheterocycles. Org Lett 2010; 12:3528-31. [DOI: 10.1021/ol101379t] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dácil Hernández
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus Universuty, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Lone Nielsen
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus Universuty, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Karl B. Lindsay
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus Universuty, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - M. Ángeles López-García
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus Universuty, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Klaus Bjerglund
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus Universuty, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Troels Skrydstrup
- Center for Protein Structures, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus Universuty, Langelandsgade 140, 8000 Aarhus C, Denmark
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