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Polic V, Cheong KJ, Hammerer F, Auclair K. Regioselective Epoxidations by Cytochrome P450 3A4 Using a Theobromine Chemical Auxiliary to Predictably Produce N-Protected β- or γ-Amino Epoxides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700637] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vanja Polic
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal, QC Canada H3A 0B8
| | - Kin Jack Cheong
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal, QC Canada H3A 0B8
| | - Fabien Hammerer
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal, QC Canada H3A 0B8
| | - Karine Auclair
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal, QC Canada H3A 0B8
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Shahzadi I, Shaukat A, Zara Z, Irfan M, Eliasson B, Ayub K, Iqbal J. Estimation of optical rotation of γ-alkylidenebutenolide, cyclopropylamine, cyclopropyl-methanol and cyclopropenone based compounds by a Density Functional Theory (DFT) approach. Chirality 2017; 29:634-647. [PMID: 28810058 DOI: 10.1002/chir.22737] [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: 04/29/2017] [Revised: 06/19/2017] [Accepted: 06/21/2017] [Indexed: 11/06/2022]
Abstract
Computing the optical rotation of organic molecules can be a real challenge, and various theoretical approaches have been developed in this regard. A benchmark study of optical rotation of various classes of compounds was carried out by Density Functional Theory (DFT) methods. The aim of the present research study was to find out the best-suited functional and basis set to estimate the optical rotations of selected compounds with respect to experimental literature values. Six DFT functional LSDA, BVP86, CAM-B3LYP, B3PW91, and PBE were applied on 22 different compounds. Furthermore, six different basis sets, i.e., 3-21G, 6-31G, aug-cc-pVDZ, aug-cc-pVTZ, DGDZVP, and DGDZVP2 were also applied with the best-suited functional B3LYP. After rigorous effort, it can be safely said that the best combination of functional and basis set is B3LYP/aug-cc-pVTZ for the estimation of optical rotation for selected compounds.
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Affiliation(s)
- Iram Shahzadi
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Aqsa Shaukat
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Zeenat Zara
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Irfan
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | | | - Khurshid Ayub
- Department of Chemistry, COMSATS Institute of Information Technology Abbottabad, KPK, Pakistan
| | - Javed Iqbal
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan.,Punjab Bio-energy Institute (PBI), University of Agriculture, Faisalabad, Pakistan
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3
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Pandey G, Gaikwad AL, Gadre SR. Dimethyl [(2R,3R,5S)-5-phenylmorpholine-2,3-diyl]diacetate as a Designer Substrate in the Syntheses of Important Heterocyclic Scaffolds. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Saha S, Roy SC. Titanocene(III) chloride mediated radical induced allylation of aldimines: formal synthesis of C-linked 4'-deoxy aza-disaccharide. J Org Chem 2011; 76:7229-34. [PMID: 21793531 DOI: 10.1021/jo200908b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Titanocene(III) chloride (Cp(2)TiCl) mediated radical induced allylation of aldimines for the preparation of homoallyl amines is described. The radical was generated from the allyl bromide using Cp(2)TiCl as the radical source. Formal synthesis of C(4)-C(5')-linked 4'-deoxy aza-disaccharide is demonstrated and a study toward the bicyclic skeleton of alkaloids was also accomplished. The radical initiator Cp(2)TiCl was prepared in situ from commercially available titanocene dichloride (Cp(2)TiCl(2)) and Zn dust in THF under argon.
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Affiliation(s)
- Sumit Saha
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Kaur P, Das P, Chaudhary A, Singh B. Amine and thiazole substituted γ-butyrolactones from naturally occurring limonene. CAN J CHEM 2011. [DOI: 10.1139/v11-016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Substituted γ-butyrolactones are important structural motifs in several natural products and pharmaceuticals. In this paper, we report the synthesis of novel γ-butyrolactone amine and thiazole derivatives from naturally occurring limonene. Regioselective bromination followed by nucleophilic substitution with different amines and thiourea gave desired products in moderate yield.
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Affiliation(s)
- Pushpinder Kaur
- Natural Plant Products Division, Institute of Himalayan Bioresource Technology, Palampur (H.P.) 176061, India
| | - Pralay Das
- Natural Plant Products Division, Institute of Himalayan Bioresource Technology, Palampur (H.P.) 176061, India
| | - Abha Chaudhary
- Natural Plant Products Division, Institute of Himalayan Bioresource Technology, Palampur (H.P.) 176061, India
| | - Bikram Singh
- Natural Plant Products Division, Institute of Himalayan Bioresource Technology, Palampur (H.P.) 176061, India
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Pehlivanugullari HC, Sumer E, Kisch H. Semiconductor photocatalysis type B: synthesis of unsaturated α-cyano-homoallylamines from imines and olefins photocatalysed by silica- and cellulose-supported cadmium sulphide. RESEARCH ON CHEMICAL INTERMEDIATES 2007. [DOI: 10.1163/156856707779238595] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Misiti D, Zappia G, Monache GD. A Concise and Stereoselective Synthesis of threo-γ-Hydroxy-l-β-lysine Lactone. European J Org Chem 2006. [DOI: 10.1002/jlac.199619960213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Kunz H, Schanzenbach D. Kohlenhydrate als chirale Matrices: Stereoselektive Synthese von β-Aminosäuren. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.19891010812] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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10
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Application of the Blaise reaction: stereoselective synthesis of (4R)-tert-butyl 3-amino-4-trimethylsilyloxy-2-alkenoates from (R)-cyanohydrins. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0957-4166(98)00039-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Harayama H, Abe A, Sakado T, Kimura M, Fugami K, Tanaka S, Tamaru Y. Palladium(II)-Catalyzed Intramolecular Aminocarbonylation of endo-Carbamates under Wacker-Type Conditions. J Org Chem 1997; 62:2113-2122. [PMID: 11671516 DOI: 10.1021/jo961988b] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd(II)-catalyzed intramolecular aminocarbonylation of olefins bearing many types of nitrogen nucleophiles has been examined under two typical conditions: acidic conditions [conditions A, typically PdCl(2) (0.1 equiv) and CuCl(2) (3.0 equiv) under 1 atm of CO at room temperature in methanol] and buffered conditions [conditions B, typically PdCl(2) (0.1 equiv) and CuCl(2) (2.3 equiv) under 1 atm of CO at 30 degrees C in trimethyl orthoacetate]. Among nitrogen nucleophiles, endo-carbamates 7 display distinctive reactivity: endo-carbamates 7a-k smoothly undergo intramolecular aminocarbonylation under conditions B to furnish 4-[(methoxycarbonyl)methyl]-2-oxazolidinones 8a-k in good yields, while they would not undergo the expected reaction under conditions A. Other nitrogen nucleophiles (exo-ureas 1, endo-ureas 3, exo-carbamates 5, and exo-tosylamides 9), on the other hand, satisfactorily undergo aminocarbonylation only under conditions A to give rise to 2, 4, 6, and 10, respectively, in good yields. Under conditions B, they are unreactive and provide either the expected products in poor yields or intractable mixtures of products. On the basis of this contrasting reactivity between endo-carbamates and other nitrogen nucleophiles, the chemoselective aminocarbonylation of 7l-o has been achieved; aminocarbonylation takes place at the endo-carbamate moieties to furnish 8l-o exclusively under conditions B, and aminocarbonylation occurs at the exo-carbamate, exo-urea, and exo-tosylamide moieties to yield 13a-d exclusively under conditions A.
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Affiliation(s)
- Hiroto Harayama
- Department of Applied Chemistry, Faculty of Engineering, Nagasaki University, 1-14 Bunnkyo, Nagasaki 852, Japan
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12
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Kunz H, Burgard A, Schanzenbach D. Asymmetrische Mannich-Synthese von β-Aminosäuren mit neuen stereogenen Zentren in α- und β-Position. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971090421] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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14
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Andrés C, González A, Pedrosa R, Pérez-Encabo A. Stereoselective ring opening of chiral oxazolidines by reformatsky reagents: an enantioselective entry to β-amino esters. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)78889-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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16
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Reetz MT. Neue Wege zur Nutzung von Aminosäuren als chirale Bausteine in der organischen Synthese. Angew Chem Int Ed Engl 1991. [DOI: 10.1002/ange.19911031204] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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18
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Kunz H, Schanzenbach D. Carbohydrates as Chiral Templates: Stereoselective Synthesis of ?-Amino Acids. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/anie.198910681] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Reetz M, Schmitz A, Holdgrün X. Tandem aldolization/lactonization/dyotropic rearrangement of α-amino-aldehydes. Tetrahedron Lett 1989. [DOI: 10.1016/s0040-4039(01)80583-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schmidt U, Häusler J, Ohler E, Poisel H. Dehydroamino acids, alpha-hydroxy-alpha-amino acids and alpha-mercapto-alpha-amino acids. FORTSCHRITTE DER CHEMIE ORGANISCHER NATURSTOFFE = PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS. PROGRES DANS LA CHIMIE DES SUBSTANCES ORGANIQUES NATURELLES 1979; 37:251. [PMID: 396213 DOI: 10.1007/978-3-7091-8545-2_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Peptide Antibiotics. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/s0301-4770(08)60955-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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23
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Wakamiya T, Shiba T. Chemical Studies on Tuberactinomycin. IX. Nuclear Magnetic Resonance Studies on Tuberactinomycins and Tuberactinamine N. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1975. [DOI: 10.1246/bcsj.48.2502] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Wakamiya T, Teshima T, Kubota I, Shiba T, Kaneko T. Chemical Studies on Tuberactinomycin. VII. Synthesis of γ-Hydroxy-β-lysine. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1974. [DOI: 10.1246/bcsj.47.2292] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Wakamiya T, Shiba T, Kaneko T, Sakakibara H, Noda T, Take T. Chemical Studies on Tuberactinomycin. V. Structures of Guanidino Amino Acids in Tuberactinomycins. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1973. [DOI: 10.1246/bcsj.46.949] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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