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Kodama Y, Imai S, Fujimoto J, Sato K, Mase N, Narumi T. Stereoselective synthesis of highly functionalized ( Z)-chloroalkene dipeptide isosteres containing an α,α-disubstituted amino acid. Chem Commun (Camb) 2021; 57:6915-6918. [PMID: 34152343 DOI: 10.1039/d1cc02952e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Described here is the first stereoselective synthesis of highly functionalized chloroalkene dipeptide isosteres containing an α,α-disubstituted amino acid (ααAA). This synthesis requires the construction of a quaternary carbon center, and this challenge was overcome by the Aza-Darzens condensation of ketimine with α,α-dichloroenolate, producing 2-chloroaziridines with quaternary carbon centers including spirocyclic motifs, which are valuable for the previously elusive synthesis of various ααAA-containing chloroalkene isosteres.
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Affiliation(s)
- Yuki Kodama
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan.
| | - Saki Imai
- Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan
| | - Junko Fujimoto
- Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan
| | - Kohei Sato
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan. and Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan and Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan
| | - Nobuyuki Mase
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan. and Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan and Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan and Green Energy Research Division, Research Institute of Green Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan
| | - Tetsuo Narumi
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan. and Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan and Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan and Green Chemistry Research Division, Research Institute of Green Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan
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2
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Shrestha B, Rose BT, Olen CL, Roth A, Kwong AC, Wang Y, Denmark SE. A Unified Strategy for the Asymmetric Synthesis of Highly Substituted 1,2-Amino Alcohols Leading to Highly Substituted Bisoxazoline Ligands. J Org Chem 2021; 86:3490-3534. [PMID: 33539091 DOI: 10.1021/acs.joc.0c02899] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A general procedure for the asymmetric synthesis of highly substituted 1,2-amino alcohols in high yield and diastereoselectivity is described that uses organometallic additions of a wide range of nucleophiles to tert-butylsulfinimines as the key step. The addition of organolithium reagents to these imines follows a modified Davis model. The diastereoselectivity for this reaction depends significantly on both the nucleophile and electrophile. These highly substituted 1,2-amino alcohols are used to synthesize stereochemically diverse and structurally novel, polysubstituted 2,2'-methylene(bisoxazoline) ligands in high yields.
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Affiliation(s)
- Bijay Shrestha
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Brennan T Rose
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Casey L Olen
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Aaron Roth
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Adon C Kwong
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Yang Wang
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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3
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Groleau RR, Chapman RSL, Ley-Smith H, Liu L, James TD, Bull SD. A Three-Component Derivatization Protocol for Determining the Enantiopurity of Sulfinamides by 1H and 19F NMR Spectroscopy. J Org Chem 2020; 85:1208-1215. [PMID: 31774680 DOI: 10.1021/acs.joc.9b02473] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A practically simple three-component chiral derivatization protocol has been developed to determine the enantiopurity of eight S-chiral sulfinamides by 1H and 19F NMR spectroscopic analysis, based on their treatment with a 2-formylphenylboronic acid template and enantiopure pinanediol to afford a mixture of diastereomeric sulfiniminoboronate esters whose diastereomeric ratio is an accurate reflection of the enantiopurity of the parent sulfinamide.
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Affiliation(s)
- Robin R Groleau
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , U.K
| | - Robert S L Chapman
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , U.K
| | - Harry Ley-Smith
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , U.K
| | - Liyuan Liu
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , U.K
| | - Tony D James
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , U.K
| | - Steven D Bull
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , U.K
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4
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Blomkvist B, Dinér P. Mild and Rapid Aniline/HBF
4
•DEE‐Catalysed Formation of Sulfinyl Imines. ChemistrySelect 2019. [DOI: 10.1002/slct.201901218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Björn Blomkvist
- Division of Organic ChemistryDepartment of ChemistrySchool of Engineering Sciences in Chemistry, Biology and Health, KTH – Royal Institute of Technology Teknikringen 30 10044 Stockholm Sweden
| | - Peter Dinér
- Division of Organic ChemistryDepartment of ChemistrySchool of Engineering Sciences in Chemistry, Biology and Health, KTH – Royal Institute of Technology Teknikringen 30 10044 Stockholm Sweden
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5
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Caille S, Cui S, Faul MM, Mennen SM, Tedrow JS, Walker SD. Molecular Complexity as a Driver for Chemical Process Innovation in the Pharmaceutical Industry. J Org Chem 2019; 84:4583-4603. [DOI: 10.1021/acs.joc.9b00735] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Seb Caille
- Process Development, Amgen, Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Sheng Cui
- Process Development, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Margaret M. Faul
- Process Development, Amgen, Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States
| | - Steven M. Mennen
- Process Development, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Jason S. Tedrow
- Process Development, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Shawn D. Walker
- Process Development, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
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6
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Langille NF, Horne DB. Discovery and Development of AMG 333: A TRPM8 Antagonist for Migraine. ACS SYMPOSIUM SERIES 2019. [DOI: 10.1021/bk-2019-1332.ch006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Neil F. Langille
- Pivotal Drug Substance Synthetic Technologies, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Daniel B. Horne
- Discovery Research, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
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7
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Blomkvist B, Dinér P. HBF4·DEE-catalyzed formation of sulfinyl imines: Synthesis and mechanistic studies. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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8
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Bouton J, Van Hecke K, Van Calenbergh S. Efficient diastereoselective synthesis of a new class of azanucleosides: 2'-homoazanucleosides. Tetrahedron 2017; 73:4307-4316. [PMID: 32287431 PMCID: PMC7111761 DOI: 10.1016/j.tet.2017.05.083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 05/24/2017] [Accepted: 05/27/2017] [Indexed: 02/08/2023]
Abstract
Azanucleosides, sugar-modified nucleoside analogues containing a 4' nitrogen atom, have shown a lot of therapeutic potential, e.g. as anti-cancer and antiviral agents. We report the synthesis of a series of 2'-homoazanucleosides, in which the nucleobase is attached to the 2'-position of the pyrrolidine ring via a methylene linker. A suitable orthogonally protected iminosugar was synthesized by ring closing metathesis and dihydroxylation as key steps and further converted to a series of 8 nucleoside analogues through Mitsunobu reaction with suitably protected nucleobases. The 5' position of the adenine analogue was then further derivatized with thiols to afford 2 additional compounds. The final compounds were evaluated for biological activity.
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Affiliation(s)
- Jakob Bouton
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Kristof Van Hecke
- XStruct, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 S3, 9000 Ghent, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
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9
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Gege C. RORγt inhibitors as potential back-ups for the phase II candidate VTP-43742 from Vitae Pharmaceuticals: patent evaluation of WO2016061160 and US20160122345. Expert Opin Ther Pat 2016; 27:1-8. [PMID: 27852111 DOI: 10.1080/13543776.2017.1262350] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Retinoic acid receptor-related orphan nuclear receptor gamma t (RORγt or RORc2) is a key transcription factor for the differentiation of naïve proinflammatory CD4+ T cells and the production of T helper-17 (TH17) cells. Inhibiting RORγt activity is thought to be beneficial in targeting a variety of inflammatory and autoimmune disorders. Recently Vitae Pharmaceuticals (to be acquired by Allergan) reported positive top-line results from a Phase 2a clinical trial of RORγt inhibitor VTP-43742 in psoriatic patients. The compound was reported to demonstrate a clear signal of efficacy over a short four-week period and no drug-related cardiac abnormalities were observed; however, in the 700 mg dose group reversible transaminase elevations were observed in four patients, which prompted the company to cancel testing VTP-43742 at a initially planned third, higher dose. In Vitae Pharmaceuticals latest patent applications, WO2016061160 and US20160122345, potential dihydropyrrolopyridine back-up compounds of clinical candidate VTP-43742 (covered in WO2015116904) are disclosed. In light of the recently announced RORγt back-up molecule VTP-45489, the improvements of the new compounds are discussed and their potential impact is elucidated.
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Affiliation(s)
- Christian Gege
- a Phenex Pharmaceuticals AG , Waldhofer Straße 104, 69123 Heidelberg , Germany
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10
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Affiliation(s)
| | - Aigars Jirgensons
- Latvian Institute of Organic Synthesis; Aizkraukles 21 1006 Riga Latvia
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11
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Dinér P, Sadhukhan A, Blomkvist B. Chiral Sulfinamides as Highly Enantioselective Organocatalysts. ChemCatChem 2014. [DOI: 10.1002/cctc.201402558] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Fontenelle CQ, Conroy M, Light M, Poisson T, Pannecoucke X, Linclau B. Stereoselectivity of the Honda–Reformatsky Reaction in Reactions with Ethyl Bromodifluoroacetate with α-Oxygenated Sulfinylimines. J Org Chem 2014; 79:4186-95. [DOI: 10.1021/jo500396p] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Clément Q. Fontenelle
- Department
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Matthew Conroy
- Department
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Mark Light
- Department
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Thomas Poisson
- Normandie University, COBRA, UMR
6014 and FR 3038; University of Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint-Aignan Cedex, France
| | - Xavier Pannecoucke
- Normandie University, COBRA, UMR
6014 and FR 3038; University of Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint-Aignan Cedex, France
| | - Bruno Linclau
- Department
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
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13
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Hennum M, Fliegl H, Gundersen LL, Eisenstein O. Mechanistic Insights on the Stereoselective Nucleophilic 1,2-Addition to Sulfinyl Imines. J Org Chem 2014; 79:2514-21. [DOI: 10.1021/jo402802j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Martin Hennum
- Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Heike Fliegl
- Centre for Theoretical and Computational Chemistry,
Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Lise-Lotte Gundersen
- Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Odile Eisenstein
- Centre for Theoretical and Computational Chemistry,
Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
- Institut Charles Gerhardt, CNRS 5253, Université Montpellier 2, cc 1501,
Place Eugène Bataillon, F-34095 Montpellier, France
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14
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Wang XN, Hsung RP, Fox SK, Lv MC, Qi R. SYNTHESIS OF DE NOVO CHIRAL γ-AMINO-YNAMIDES USING LITHIATED YNAMIDES. OBSERVATION OF A UNIQUE 5- ENDO-DIG CYCLIZATION WITH AN INVERSION OF S-CENTER. HETEROCYCLES 2014; 88:1233-1254. [PMID: 24791059 PMCID: PMC4002055 DOI: 10.3987/com-13-s(s)88] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We describe herein details of our efforts in developing a highly stereoselective synthesis of de novo chiral γ-amino-ynamides through additions of lithiated ynamides to Ellman-Davis chiral N-tert-butanesulfinyl imines. While additions of ynamides could be highly stereoselective even without Lewis acids, the use of BF3-OEt2 completely reversed the stereoselectivity. On the other hand, additions of oxazolidinone-substituted, oxazinanone-substituted and tetrahydropyrimidinone-substituted ynamides behaved quite differently and functioned better with BF3-OEt2. The chirality of the oxazolidinone ring exerts no impact on the selectivity. This work also features a unique 5-endo-dig cyclization of oxazolidinone-substituted γ-amino-ynamides that could be promoted with acid, leading to isothiazoles and 2,3-dihydro-isothiazole S-oxides.
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15
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Gross S, Nguyen F, Bierschenk M, Sohmen D, Menzel T, Antes I, Wilson DN, Bach T. Amythiamicin D and related thiopeptides as inhibitors of the bacterial elongation factor EF-Tu: modification of the amino acid at carbon atom C2 of ring C dramatically influences activity. ChemMedChem 2013; 8:1954-62. [PMID: 24106106 DOI: 10.1002/cmdc.201300323] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Indexed: 11/12/2022]
Abstract
Three analogues of amythiamicin D, which differ in the substitution pattern at the methine group adjacent to C2 of the thiazole ring C, were prepared by de novo total synthesis. In amythiamicin D, this carbon atom is (S)-isopropyl substituted. Two of the new analogues carry a hydroxymethyl in place of the isopropyl group, one at an S- (compound 3 a) and the other at an R-configured stereogenic center (3 b). The third analogue, 3 c, contains a benzyloxymethyl group at an S-configured stereogenic center. Compounds 3 b and 3 c showed no inhibitory effect toward various bacterial strains, nor did they influence the translation of firefly luciferase. In stark contrast, compound 3 a inhibited the growth of Gram-positive bacteria Staphylococcus aureus (strains NCTC and Mu50) and Listeria monocytogenes EGD. In the firefly luciferase assay it proved more potent than amythiamicin D, and rescue experiments provided evidence that translation inhibition is due to binding to the bacterial elongation factor Tu (EF-Tu). The results were rationalized by structural investigations and by molecular dynamics simulations of the free compounds in solution and bound to the EF-Tu binding site. The low affinity of compound 3 b was attributed to the absence of a critical hydrogen bond, which stabilizes the conformation required for binding to EF-Tu. Compound 3 c was shown not to comply with the binding properties of the binding site.
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Affiliation(s)
- Stefan Gross
- Lehrstuhl für Organische Chemie I, Technische Universität München, Lichtenbergstr. 4, 85747 Garching (Germany)
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16
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Grellepois F, Ben Jamaa A, Gassama A. Diastereoselective Addition of Organomagnesium and Organolithium Reagents to Chiral TrifluoromethylN-tert-Butanesulfinyl Hemiaminals. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300890] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Wang XN, Hsung RP, Qi R, Fox SK, Lv MC. A highly stereoselective addition of lithiated ynamides to Ellman-Davis chiral N-tert-butanesulfinyl imines. Org Lett 2013; 15:2514-7. [PMID: 23646900 DOI: 10.1021/ol400989x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A highly diastereoselective addition of lithiated ynamides to Ellman-Davis chiral imines is described. While additions of N-sulfonyl ynamides are highly stereoselective even without Lewis acids, the use of BF3-OEt2 completely reversed the stereoselectivity. In addition, oxazolidinone-substituted ynamides behaved differently and functioned better with BF3-OEt2, and the chirality of the oxazolidinone ring exerts no impact on the selectivity.
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Affiliation(s)
- Xiao-Na Wang
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin , Madison, Wisconsin 53705, United States
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18
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Bian J, Blakemore D, Warmus JS, Sun J, Corbett M, Rose CR, Bechle BM. Diastereoselective Synthesis of β-Heteroaryl syn-α-Methyl-β-Amino Acid Derivatives via a Double Chiral Auxiliary Approach. Org Lett 2013; 15:562-5. [DOI: 10.1021/ol3033785] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianwei Bian
- Neusentis Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States, and The Portway Building, Granta Park, Cambridge, CB21 6GS, U.K
| | - David Blakemore
- Neusentis Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States, and The Portway Building, Granta Park, Cambridge, CB21 6GS, U.K
| | - Joseph S. Warmus
- Neusentis Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States, and The Portway Building, Granta Park, Cambridge, CB21 6GS, U.K
| | - Jianmin Sun
- Neusentis Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States, and The Portway Building, Granta Park, Cambridge, CB21 6GS, U.K
| | - Matthew Corbett
- Neusentis Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States, and The Portway Building, Granta Park, Cambridge, CB21 6GS, U.K
| | - Colin R. Rose
- Neusentis Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States, and The Portway Building, Granta Park, Cambridge, CB21 6GS, U.K
| | - Bruce M. Bechle
- Neusentis Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States, and The Portway Building, Granta Park, Cambridge, CB21 6GS, U.K
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19
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Qiu S, Li G, Lu S, Huang B, Feng Z, Li C. Chiral sulfur compounds studied by Raman optical activity: tert-butanesulfinamide and its precursor tert-butyl tert-butanethiosulfinate. Chirality 2012; 24:731-40. [PMID: 22553109 DOI: 10.1002/chir.22038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Two chiral sulfur compounds, tert-butyl tert-butanethiosulfinate (1) and tert-butanesulfinamide (2), with inversion of configuration, have been studied by Raman optical activity (ROA) and electronic circular dichroism combined with density functional theory calculation. With the S-S linkage in 1, the couplings between the two tertiary carbon atoms often generate large ROA signals, whereas the tertiary carbon atom itself generally makes a large contribution to ROA signals in 2 for similar vibrational modes. The conformational dependence of ROA parameters provides probing conformation around the S-S bond from a new perspective. The simultaneous use of electronic circular dichroism and ROA is warranted to extract reliable conformational information. ROA provides a suitable candidate for the stereochemical study of chiral sulfur compounds, especially its capability of sensing the conformation around the S-S bond.
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Affiliation(s)
- Shi Qiu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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20
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Park CM, Jeon DJ. Stereoselective synthesis of novel pyrazole derivatives using tert-butansulfonamide as a chiral auxiliary. Org Biomol Chem 2012; 10:2613-20. [PMID: 22371117 DOI: 10.1039/c2ob06495b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel chiral pyrazole derivative was developed by our research program as a potent PDE4 inhibitor for the treatment of anti-inflammatory diseases, such as asthma and chronic obstructive pulmonary disease. The asymmetric synthesis of the inhibitors carrying the pyrazole moiety, including nitrogen directly bonded to a chiral center, through a novel approach is disclosed. The key steps of the synthetic sequence begin with the preparation of chiral toluenesulfinyl imine by the condensation of (R)- and (S)-tert-butanesulfinamide with an aldehyde. Next, a corresponding chiral amine synthesis by a stereoselective addition reaction of 4-picolyl lithium to the chiral toluenesulfinyl imine is performed, followed by desulfination. The preparation of the cis-type enaminone from the addition of the enaminone to the corresponding chiral amine is then accomplished, with further transformation into the pyrazole derivatives through the amination of the enaminones and subsequent dehydro-cyclization. A total of 8 steps are completed to produce a 5.5% yield (100% ee).
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Affiliation(s)
- Chang Min Park
- Bio-Organic Science Division, Korea Research Institute of Chemical Technology, P.O. Box 9, Sinseongro, Yuseong, Daejeon 305-600, Korea
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21
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Delgado O, Monteagudo A, Van Gool M, Trabanco AA, Fustero S. A practical entry to β-aryl-β-alkyl amino alcohols: application to the synthesis of a potent BACE1 inhibitor. Org Biomol Chem 2012; 10:6758-66. [DOI: 10.1039/c2ob25845e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Robak MT, Herbage MA, Ellman JA. Synthesis and applications of tert-butanesulfinamide. Chem Rev 2010; 110:3600-740. [PMID: 20420386 DOI: 10.1021/cr900382t] [Citation(s) in RCA: 904] [Impact Index Per Article: 64.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- MaryAnn T Robak
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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23
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van den Nieuwendijk AMCH, Ruben M, Engelsma SE, Risseeuw MDP, van den Berg RJBHN, Boot RG, Aerts JM, Brussee J, van der Marel GA, Overkleeft HS. Synthesis of l-altro-1-Deoxynojirimycin, d-allo-1-Deoxynojirimycin, and d-galacto-1-Deoxynojirimycin from a Single Chiral Cyanohydrin. Org Lett 2010; 12:3957-9. [DOI: 10.1021/ol101556k] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Adrianus M. C. H. van den Nieuwendijk
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Mark Ruben
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Sander E. Engelsma
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Martijn D. P. Risseeuw
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Richard J. B. H. N. van den Berg
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Rolf G. Boot
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Johannes M. Aerts
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Johannes Brussee
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Gijs A. van der Marel
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
| | - Herman S. Overkleeft
- Leiden Institute of Chemistry and Leiden Amsterdam Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, and Department of Medical Biochemistry, Acadamic Medical Center, Amsterdam, The Netherlands
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24
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Chen BL, Wang B, Lin GQ. Highly diastereoselective addition of alkynylmagnesium chlorides to N-tert-butanesulfinyl aldimines: a practical and general access to chiral alpha-branched amines. J Org Chem 2010; 75:941-4. [PMID: 20041724 DOI: 10.1021/jo902424m] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The addition of alkynylmagnesium chlorides to N-tert-butanesulfinyl imines proceeded with a remarkably high diastereoselectivity (dr > 13:1, mostly diastereopure), and with a general scope of both reaction partners. The high dr translated into simplified purification and higher optical purity for the synthesis of a wide array of chiral alpha-branched amines. The alkyne functionality also provides a multitude of opportunities for further synthetic transformations. The short asymmetric synthesis of (+)-angustureine 7 and (-)-cuspareine 10 was realized with use of this approach.
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Affiliation(s)
- Bai-Ling Chen
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
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25
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Kaur P, Shakya G, Sun H, Pan Y, Li G. Chiral N-phosphonyl imine chemistry: an efficient asymmetric synthesis of chiral N-phosphonyl propargylamines. Org Biomol Chem 2010; 8:1091-6. [PMID: 20165799 DOI: 10.1039/b923914f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of substituted chiral propargylamines have been synthesized by reacting chiral N-phosphonylimines with lithium aryl/alkyl acetylides. Seventeen examples were studied to give excellent yields (>90%) and diastereoselectivities (96 : 4 to 99 : 1). It was found that the types of bases for generating acetylides and solvents are crucial for effectiveness of this asymmetric reaction. In addition, N,N-isopropyl group on chiral N-phosphonylimine auxiliary was proven to be superior to other protecting groups in controlling diastereoselectivity.
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Affiliation(s)
- Parminder Kaur
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
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26
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Aronov AM, Tang Q, Martinez-Botella G, Bemis GW, Cao J, Chen G, Ewing NP, Ford PJ, Germann UA, Green J, Hale MR, Jacobs M, Janetka JW, Maltais F, Markland W, Namchuk MN, Nanthakumar S, Poondru S, Straub J, ter Haar E, Xie X. Structure-guided design of potent and selective pyrimidylpyrrole inhibitors of extracellular signal-regulated kinase (ERK) using conformational control. J Med Chem 2009; 52:6362-8. [PMID: 19827834 DOI: 10.1021/jm900630q] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Ras/Raf/MEK/ERK signal transduction, an oncogenic pathway implicated in a variety of human cancers, is a key target in anticancer drug design. A novel series of pyrimidylpyrrole ERK inhibitors has been identified. Discovery of a conformational change for lead compound 2, when bound to ERK2 relative to antitarget GSK3, enabled structure-guided selectivity optimization, which led to the discovery of 11e, a potent, selective, and orally bioavailable inhibitor of ERK.
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Affiliation(s)
- Alex M Aronov
- Vertex Pharmaceuticals Inc., 130 Waverly Street, Cambridge, Massachusetts 02139-4242, USA.
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27
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Lesma G, Landoni N, Pilati T, Sacchetti A, Silvani A. Grignard Addition to Imines Derived from Isatine: A Method for the Asymmetric Synthesis of Quaternary 3-Aminooxindoles. J Org Chem 2009; 74:4537-41. [DOI: 10.1021/jo900623c] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giordano Lesma
- Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via G. Venezian 21, 20133 Milano, Italy, Istituto di Scienze e Tecnologie Molecolari - CNR, Via Golgi 19, 20133 Milano, Italy, and Politecnico di Milano, Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, via Mancinelli 7, 20131 Milano, Italy
| | - Nicola Landoni
- Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via G. Venezian 21, 20133 Milano, Italy, Istituto di Scienze e Tecnologie Molecolari - CNR, Via Golgi 19, 20133 Milano, Italy, and Politecnico di Milano, Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, via Mancinelli 7, 20131 Milano, Italy
| | - Tullio Pilati
- Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via G. Venezian 21, 20133 Milano, Italy, Istituto di Scienze e Tecnologie Molecolari - CNR, Via Golgi 19, 20133 Milano, Italy, and Politecnico di Milano, Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, via Mancinelli 7, 20131 Milano, Italy
| | - Alessandro Sacchetti
- Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via G. Venezian 21, 20133 Milano, Italy, Istituto di Scienze e Tecnologie Molecolari - CNR, Via Golgi 19, 20133 Milano, Italy, and Politecnico di Milano, Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, via Mancinelli 7, 20131 Milano, Italy
| | - Alessandra Silvani
- Dipartimento di Chimica Organica e Industriale, Università degli Studi di Milano, via G. Venezian 21, 20133 Milano, Italy, Istituto di Scienze e Tecnologie Molecolari - CNR, Via Golgi 19, 20133 Milano, Italy, and Politecnico di Milano, Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, via Mancinelli 7, 20131 Milano, Italy
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28
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Zhang D, Yuan C. Highly Enantioselective Synthesis of β-Aminophosphinates with Two Stereogenic Atoms and Their Conversion into Optically Pure Ethyl β-Amino-H-phosphinates. Chemistry 2009; 15:4088-101. [DOI: 10.1002/chem.200802248] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Yin C, Hui XP, Xu PF, Niu LF, Chen YF, Wang B. Development and Application of a New General Method for the Asymmetric Synthesis of (E)-(2-En-3-ynyl)-amines. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200800642] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Ferreira F, Botuha C, Chemla F, Pérez-Luna A. tert-Butanesulfinimines: structure, synthesis and synthetic applications. Chem Soc Rev 2009; 38:1162-86. [PMID: 19421587 DOI: 10.1039/b809772k] [Citation(s) in RCA: 288] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since Ellman's seminal works, over the past ten years tert-butanesulfinimines have proved to be useful chiral amino intermediates for organic synthesis. Through highly stereoselective reactions, amongst which reductions, nucleophilic 1,2-additions and ylide condensations, a broad range of nitrogen-containing compounds has been synthesized. Although the stereoselectivity levels are high in most cases, the sense of the stereoinduction is generally not predictable. The object of this critical review is to present the models proposed to rationalize the stereochemical outcome of the reactions involving tert-butanesulfinimines and to point out an obvious lack of homogeneity amongst them (128 references).
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Affiliation(s)
- Franck Ferreira
- UPMC Univ Paris 06, UMR 7611, Laboratoire de Chimie Organique, Institut de Chimie Moléculaire (FR 2769), case 183, 4 place Jussieu, F-75005, Paris, France.
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31
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Voituriez A, Pérez-Luna A, Ferreira F, Botuha C, Chemla F. Stereo- and Enantioselective Synthesis of Acetylenic 2-Amino-1,3-diol Stereotriads. Org Lett 2009; 11:931-4. [DOI: 10.1021/ol802912f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arnaud Voituriez
- UPMC Univ Paris 06, UMR7611, Laboratoire de Chimie Organique, Institut de Chimie Moléculaire (FR2769), case 183, 4 place Jussieu, F-75252 Paris Cedex 05, France
| | - Alejandro Pérez-Luna
- UPMC Univ Paris 06, UMR7611, Laboratoire de Chimie Organique, Institut de Chimie Moléculaire (FR2769), case 183, 4 place Jussieu, F-75252 Paris Cedex 05, France
| | - Franck Ferreira
- UPMC Univ Paris 06, UMR7611, Laboratoire de Chimie Organique, Institut de Chimie Moléculaire (FR2769), case 183, 4 place Jussieu, F-75252 Paris Cedex 05, France
| | - Candice Botuha
- UPMC Univ Paris 06, UMR7611, Laboratoire de Chimie Organique, Institut de Chimie Moléculaire (FR2769), case 183, 4 place Jussieu, F-75252 Paris Cedex 05, France
| | - Fabrice Chemla
- UPMC Univ Paris 06, UMR7611, Laboratoire de Chimie Organique, Institut de Chimie Moléculaire (FR2769), case 183, 4 place Jussieu, F-75252 Paris Cedex 05, France
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32
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Clerici A, Ghilardi A, Pastori N, Punta C, Porta O. A New One-Pot, Four-Component Synthesis of 1,2-Amino Alcohols: TiCl3/t-BuOOH-Mediated Radical Hydroxymethylation of Imines. Org Lett 2008; 10:5063-6. [DOI: 10.1021/ol802244n] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Angelo Clerici
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano - Sezione Chimica, Via Mancinelli 7, 20131 Milano, Italy
| | - Alessandra Ghilardi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano - Sezione Chimica, Via Mancinelli 7, 20131 Milano, Italy
| | - Nadia Pastori
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano - Sezione Chimica, Via Mancinelli 7, 20131 Milano, Italy
| | - Carlo Punta
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano - Sezione Chimica, Via Mancinelli 7, 20131 Milano, Italy
| | - Ombretta Porta
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano - Sezione Chimica, Via Mancinelli 7, 20131 Milano, Italy
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33
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Synthesis of chiral β2,2,3-3-amino-2-hydroxyalkanoates and 3-alkyl-3-hydroxy-β-lactams by double asymmetric induction. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.05.069] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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García Ruano JL, Alemán J, Alonso I, Parra A, Marcos V, Aguirre J. π–π Stacking versus Steric Effects in Stereoselectivity Control: Highly Diastereoselective Synthesis ofsyn-1,2-Diarylpropylamines. Chemistry 2007; 13:6179-95. [PMID: 17479999 DOI: 10.1002/chem.200601893] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
N-Arylarylideneamines react with sulfinylbenzyl carbanions derived from 2-(p-tolylsulfinyl)toluenes (S)-1 and (S)-2, affording epimeric mixtures at C1 of 1,2-diarylethyl- and 1,2-diarylpropylamine derivatives. The sulfinyl group completely controls the configuration at C2 in the reactions of (S)-2. The configuration at C1 depends on the electron density of the ring adjacent to the iminic carbon atom which is modulated by pi-pi stacking interactions with the ring joined to the carbanionic centre. The stereoselectivity was controlled by modifying the acceptor character of the arylideneamine ring with appropriate substituents, the formation of the highly selective (R) configuration at C1 being made possible by electron-donating groups. N-(2,4,6-Trimethoxyphenyl)arylideneamines have been shown to be suitable starting materials for the preparation of (R)-1,2-diarylethyl- and (1R,2S)-1,2-diarylpropylamines (syn epimers) in a highly stereoselective manner.
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Affiliation(s)
- José L García Ruano
- Departamento de Química Orgánica (C-I), Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain.
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35
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Colyer JT, Andersen NG, Tedrow JS, Soukup TS, Faul MM. Reversal of diastereofacial selectivity in hydride reductions of N-tert-butanesulfinyl imines. J Org Chem 2007; 71:6859-62. [PMID: 16930038 DOI: 10.1021/jo0609834] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of N-tert-butanesulfinyl imines were reduced with NaBH4 in THF containing 2% water to provide the corresponding secondary sulfinamides in high yield and diastereoselectivity. By using the same sulfinyl imine starting materials and changing the reductant to L-Selectride, the stereoselectivity could be efficiently reversed to afford the opposite product diastereomer in high yield and selectivity.
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Affiliation(s)
- John T Colyer
- Chemistry Process Research and Development, Amgen Inc., Thousand Oaks, CA 91320-1799, USA
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36
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Turcaud S, Sierecki E, Martens T, Royer J. Asymmetric alpha-alkynylation of piperidine via N-sulfinyliminium salts. J Org Chem 2007; 72:4882-5. [PMID: 17523673 DOI: 10.1021/jo070631c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Piperidine was stereoselectively alpha-alkynylated in a four-step sequence made up of transformation to a chiral nonracemic N-sulfinylpiperidine, anodic oxidation to N-sulfinyliminium ion equivalent, alkynylation through addition of a mixed organoaluminum derivative, and final acidic deprotection of the sulfoxide. Overall yields are around 50%, and the diastereoselectivity of the nucleophilc addition was between 92 and 99% de, allowing isolation of the final product with 99% enantiomeric purity.
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Affiliation(s)
- Serge Turcaud
- Synthèse et Structure de Molécules d'Intérêt Pharmacologique, UMR 8638 CNRS-Université Paris 5, 75270 Paris cedex 6, France
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37
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38
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Ma Y, Wang X, Wang Y, Feng Y, Zang Y. An Economic Approach to Chiral Thiosulfinates by Enantioselective Oxidation with Hydroperoxide. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-120027290] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Yudao Ma
- a School of Chemistry and Chemical Engineering , Shandong University , Shanda South Road #27, Jinan, 250100, P.R. China
| | - Xiaomei Wang
- a School of Chemistry and Chemical Engineering , Shandong University , Shanda South Road #27, Jinan, 250100, P.R. China
| | - Yong Wang
- a School of Chemistry and Chemical Engineering , Shandong University , Shanda South Road #27, Jinan, 250100, P.R. China
| | - Yu Feng
- a School of Chemistry and Chemical Engineering , Shandong University , Shanda South Road #27, Jinan, 250100, P.R. China
| | - Yunfu Zang
- a School of Chemistry and Chemical Engineering , Shandong University , Shanda South Road #27, Jinan, 250100, P.R. China
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39
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García Ruano JL, Alemán J, Parra A. Highly Stereoselective Benzylation of N-Sulfinylketimines. J Am Chem Soc 2005; 127:13048-54. [PMID: 16159300 DOI: 10.1021/ja0515203] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The benzylation of N-sulfinyl ketimines with 2-(p-tolylsulfinyl)ethylbenzene and LDA afford t-alkylamines in good yields. The configuration at each one of the new chiral centers simultaneously created in this reaction is controlled by the configuration of the sulfinyl groups at the nucleophile and electrophile, respectively. Thus, the reactions of the (S)-sulfoxide 6 with the N-(S)-sulfinylketimines 3 only yield the anti diastereoisomers 18, whereas the syn diastereoisomers 19 are exclusively formed in reactions of (S)-6 with N-(R)-sulfinylketimines 3. After a two-step desulfinylation process ((i) TFA, (ii) Ra-Ni), this reaction provides a procedure for synthesizing any epimer of alpha,alpha-dibranched beta-alkylarylamines in optically pure form by choosing the configuration of the starting materials. A similar behavior is observed for carbanions derived from the O-protected 2-(p-tolylsulfinyl) benzyl alcohol 7 thus allowing the synthesis of the optically pure anti- and syn-1,2-amino alcohols containing a chiral quaternary carbon adjacent to the nitrogen.
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Affiliation(s)
- José Luis García Ruano
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
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40
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Dondas HA, De Kimpe N. A sequence of electrophile induced cyclisation and concomitant N-deprotection of alkenylsulfinimines and alkenylsulfinamides as a direct route to cyclic or spirocyclic imines, pyrrolidines and piperidines. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.04.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Schenkel LB, Ellman JA. Self-Condensation of N-tert-Butanesulfinyl Aldimines: Application to the Rapid Asymmetric Synthesis of Biologically Important Amine-Containing Compounds. Org Lett 2004; 6:3621-4. [PMID: 15387563 DOI: 10.1021/ol048458j] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Highly diastereoselective intra- and intermolecular self-condensation reactions of N-tert-butanesulfinyl aldimines have been developed and applied to the rapid, asymmetric synthesis of trans-2-aminocyclopentanecarboxylic acid and the drug candidate SC-53116. Key to both syntheses is a novel microwave-assisted reaction in which N-sulfinyl aldimines are cleanly converted into nitriles in high-yielding concerted elimination processes.
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Affiliation(s)
- Laurie B Schenkel
- Center for New Directions in Organic Synthesis, Department of Chemistry, University of California, Berkeley, California 94720, USA
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42
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Reversal of diastereoselection in the addition of Grignard reagents to chiral 2-pyridyl tert-butyl (Ellman) sulfinimines. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.07.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Morton D, Pearson D, Field RA, Stockman RA. A Convenient Synthesis of Chiral Nonracemic Vinyl Aziridines. Org Lett 2004; 6:2377-80. [PMID: 15228283 DOI: 10.1021/ol049252l] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] The preparation of a range of alkyl and aryl chiral vinyl aziridines was achieved in high yield and stereoselectivity, and with excellent diastereoselectivity, by reaction of tert-butylsulfinylimines with the ylide derived from S-allyl tetrahydrothiophenium bromide.
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Affiliation(s)
- Daniel Morton
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, U.K
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44
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Chinchilla R, Nájera C, Yus M. Metalated Heterocycles and Their Applications in Synthetic Organic Chemistry. Chem Rev 2004; 104:2667-722. [PMID: 15137804 DOI: 10.1021/cr020101a] [Citation(s) in RCA: 272] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rafael Chinchilla
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica, Facultad de Ciencias, Universidad de Alicante, Apartado 99, 03080 Alicante, Spain.
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45
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Evans JW, Ellman JA. Stereoselective Synthesis of 1,2-Disubstituted β-Amino Alcohols by Nucleophilic Addition to N-tert-Butanesulfinyl α-Alkoxyaldimines. J Org Chem 2003; 68:9948-57. [PMID: 14682687 DOI: 10.1021/jo035224p] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-tert-Butanesulfinyl alpha-alkoxyaldimines are readily prepared from protected (S)-lactals without epimerization at the alpha-stereocenter. Addition of ethyl and phenyl Grignard reagents, as well as the titanium enolate of methyl acetate, to the N-tert-butanesulfinyl aldimines provides 1,2-disubstituted beta-amino alcohols in good yields (73-98%) and with high diastereoselectivities. Either syn- or anti-amino alcohol products can be obtained by the appropriate choice of alcohol protecting groups and/or reaction conditions. Finally, deprotection of the addition products provides straightforward access to either syn- or anti-1,2-amino alcohols.
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Affiliation(s)
- Jared W Evans
- Center for New Directions for Organic Synthesis, Department of Chemistry, University of California, Berkeley, California 94720, USA
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Kells KW, Chong JM. Addition of Bu3SnLi to tert-Butanesulfinimines as an Efficient Route to Chiral, Nonracemic α-Aminoorganostannanes. Org Lett 2003; 5:4215-8. [PMID: 14572288 DOI: 10.1021/ol035702i] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text]. Addition of Bu3SnLi to tert-butanesulfinimines proceeds with high diastereoselectivities to provide the expected adducts in excellent yields and typically with dr = >99:1. These adducts are readily converted to enantiomerically enriched N-Boc-protected alpha-aminoorganostannanes with complete retention of configuration.
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Affiliation(s)
- Kevin W Kells
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry (GWC)2, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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Effective tuning of the arene and alkanesulfinamides for highly enantioselective synthesis of (S)-4-chlorophenylphenylmethylamine, a key intermediate for antihistamic (S)-cetirizine. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00903-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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48
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Weix DJ, Ellman JA. Improved synthesis of tert-butanesulfinamide suitable for large-scale production. Org Lett 2003; 5:1317-20. [PMID: 12688748 DOI: 10.1021/ol034254b] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] An improved synthesis of tert-butanesulfinamide that overcomes the scalability problems of the previous syntheses is described. The key step is the catalytic asymmetric oxidation of the inexpensive di-tert-butyl disulfide starting material. The new homogeneous reaction conditions utilize an inexpensive chiral ligand prepared in a single step from commercially available cis-1-amino-indan-2-ol. The reaction is performed at a 2.3 M concentration in the practical solvent acetone and can readily be run on a kilogram scale.
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Affiliation(s)
- Daniel J Weix
- Center for New Directions in Organic Synthesis, Department of Chemistry, University of California, Berkeley, California 94720, USA
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García Ruano JL, Alemán J, Soriano JF. Facile synthesis of optically pure 1,2-diaryl (and 1-Alkyl-2-aryl) ethyl and propylamines. Org Lett 2003; 5:677-80. [PMID: 12605488 DOI: 10.1021/ol027464h] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A concise high-yielding route to synthetically useful 1,2-diaryl (and 1-alkyl-2-aryl) ethyl and propylamines in high enantiomeric purity is described. The key step of this route is the completely stereoselective addition of lithium (R)-ortho-(p-toluenesulfinyl)benzylic carbanions to (S)-N-p-toluenesulfinylimines, which takes place in very high or quantitative yields. N-Desulfinylation and C-desulfinylation of the resulting adducts can be achieved with no loss of optical purity employing conventional methods (TFA and Raney-Ni, respectively).
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Affiliation(s)
- José L García Ruano
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain.
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Ellman JA, Owens TD, Tang TP. N-tert-butanesulfinyl imines: versatile intermediates for the asymmetric synthesis of amines. Acc Chem Res 2002; 35:984-95. [PMID: 12437323 DOI: 10.1021/ar020066u] [Citation(s) in RCA: 665] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-tert-Butanesulfinyl aldimines 3 and ketimines 4 are exceedingly versatile intermediates for the asymmetric synthesis of amines. The N-tert-butanesulfinyl imines are prepared in high yields by condensing enantiomerically pure tert-butanesulfinamide 1, which is readily available in either configuration, with a wide range of aldehydes and ketones. The tert-butanesulfinyl group activates the imines for the addition of many different classes of nucleophiles, serves as a powerful chiral directing group, and after nucleophilic addition is readily cleaved by treatment of the product with acid. A wide range of highly enantioenriched amines, including alpha-branched and alpha,alpha-dibranched amines, alpha- and beta-amino acids, 1,2- and 1,3-amino alcohols, and alpha-trifluoromethyl amines, are efficiently synthesized using this methodology. In addition, N-tert-butanesulfinyl imine derivatives provide a new family of ligands for asymmetric catalysis.
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Affiliation(s)
- Jonathan A Ellman
- Center for New Directions in Organic Synthesis, Department of Chemistry, University of California, Berkeley, California 94720-1460,USA.
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