1
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Vinaykumar A, Surender B, Rao BV. Chemoselective Nozaki-Hiyama-Takai-Kishi and Grignard reaction: short synthesis of some carbahexopyranoses. RSC Adv 2023; 13:22824-22830. [PMID: 37520087 PMCID: PMC10375257 DOI: 10.1039/d3ra03704e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/20/2023] [Indexed: 08/01/2023] Open
Abstract
A common, divergent, efficient, stereoselective and short approach for the total syntheses of some carbahexopyranoses namely, MK7607, (-)-gabosine A, (-)-conduritol E, (-)-conduritol F, 6a-carba-β-d-fructopyranose and other carbasugars using chemoselective Grignard or Nozaki-Hiyama-Takai-Kishi (NHTK) reactions and RCM. Herein, the Grignard and NHTK reactions are able to differentiate the reactivity difference between lactol or lactolacetate and aldehyde of 2 & 6 under given conditions to give the desired skeleton chemoselectivity.
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Affiliation(s)
- Allam Vinaykumar
- Fluoro-Agrochemicals, CSIR-Indian Institute of Chemical Technology Hyderabad India
| | - Banothu Surender
- Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad India
| | - Batchu Venkateswara Rao
- Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad India
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2
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Hyeon H, Jang EB, Yoon WJ, Lee JD, Hyun HB, Jung YH, Min J, Ham YM. Proliferation and Metabolic Profiling of Cynanchum wilfordii Adventitious Roots Using Explants from Different Cultivation Methods. ACS OMEGA 2022; 7:46756-46768. [PMID: 36570270 PMCID: PMC9773952 DOI: 10.1021/acsomega.2c05833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Cynanchum wilfordii root is used in traditional herbal medicine owing to its various pharmacological activities. However, C. wilfordii roots are misused owing to their morphological similarities with C. auriculatum. Adventitious root (AR) culture can prevent such misuse, and the selection of plant materials is an important procedure for producing high-quality ARs. This study aimed to compare the proliferation and metabolic profiles of C. wilfordii ARs in two types of explants from different cultivation methods (either cultivated in open field (ECF) or cultivated on a heap of C. wilfordii (ECH)). After 4 weeks of culture, the proliferation rate and number and length of secondary ARs were determined, and 3/4 Murashige and Skoog (MS) salt medium, 4.92 μM indole-3-butyric acid (IBA), and 5% sucrose were suggested as the best proliferation conditions for ARs originating from both ECF and ECH. Through metabolic profiling, ARs from ECH were found to show higher accumulation patterns for flavonoids, polysaccharides, hydroxyacetophenones, aromatic amino acids, and mono-unsaturated fatty acids, which were ascribed to the activation of flavonoid biosynthesis, the phenylpropanoid pathway, and fatty acid desaturase, stimulated by abiotic stresses. In contrast, ARs from ECF had higher levels of TCA cycle intermediates, amino acids in the aspartate-glutamate pathway, and saturated and polyunsaturated fatty acids, indicating energy metabolism and plant development. Overall, the current study provided information on the optimal conditions for inducing C. wilfordii ARs with higher amounts of bioactive compounds.
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Affiliation(s)
- Hyejin Hyeon
- Biodiversity
Research Institute, Jeju
Technopark, Seogwipo, Jeju 63608, Republic of Korea
| | - Eun Bi Jang
- Biodiversity
Research Institute, Jeju
Technopark, Seogwipo, Jeju 63608, Republic of Korea
| | - Weon-Jong Yoon
- Biodiversity
Research Institute, Jeju
Technopark, Seogwipo, Jeju 63608, Republic of Korea
| | - Jong-Du Lee
- Biodiversity
Research Institute, Jeju
Technopark, Seogwipo, Jeju 63608, Republic of Korea
| | - Ho Bong Hyun
- Biodiversity
Research Institute, Jeju
Technopark, Seogwipo, Jeju 63608, Republic of Korea
| | - Yong-Hwan Jung
- Biodiversity
Research Institute, Jeju
Technopark, Seogwipo, Jeju 63608, Republic of Korea
| | - Jung Min
- Jeju
Chyeonnyeonyakcho Farming Co., Jeju, Jeju 63052, Republic of
Korea
| | - Young-Min Ham
- Biodiversity
Research Institute, Jeju
Technopark, Seogwipo, Jeju 63608, Republic of Korea
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3
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Shui F, Jia J, Yang X, Zhou Q, Jiang Y, Chen X. Synthesis of (+)-Epoxydon, (-)-Phyllostine, (-)-RKTS 33, and (-)-Parasitenone Featuring Selective Sulfonylation and Oxirane Ring Closure of Aldol Cyclization Products. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000486] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Shui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Junhao Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xing Yang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Qin Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Yimin Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
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4
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Karanfil A, Şahin E, Kelebekli L. Synthesis of novel tetrols from syn-bisepoxide: Preparation of halogenated bicyclo[4.2.0] inositols. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131000] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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5
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Şengül ME, Menzek A, Saraçoğlu N. Synthesis of Cycloheptane-1,2,3,4-tetraols as Cyclitol Mimetics. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/0308234054506794] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Acidic hydrolysis and acetylation of epoxidation products 11a/b of 1,4-diacetoxy-2-cycloheptene afforded unsymmetrical 1,2,3,4-tetraacetoxycycloheptane (12). OsO4-cis-hydroxylation and acetylation of 1,4-diacetoxy-2-cycloheptene gave two symmetrical 1,2,3,4-tetraacetoxycycloheptanes (14/15). Deacetylation of 1,2,3,4-tetraacetoxy cycloheptanes gave cycloheptane-1,2,3,4-tetraols as cyclitol mimetics.
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Affiliation(s)
| | - Abdullah Menzek
- Department of Chemistry, Atatürk University, TR-25240 Erzurum, Turkey
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6
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Tibhe GD, Macías MA, Schapiro V, Suescun L, Pandolfi E. General Method for the Synthesis of (-)-Conduritol C and Analogs from Chiral Cyclohexadienediol Scaffolds. MOLECULES (BASEL, SWITZERLAND) 2018; 23:molecules23071653. [PMID: 29986401 PMCID: PMC6100410 DOI: 10.3390/molecules23071653] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/29/2018] [Accepted: 07/01/2018] [Indexed: 11/16/2022]
Abstract
An efficient and facile general method for the synthesis of conduritol C analogs, taking advantage of an enantioselective biocatalysis process of monosubstituted benzenes, is described. The absolute stereochemical patterns of the target molecules (−)-conduritol C, (−)-bromo-conduritol C, and (−)-methyl-conduritol C were achieved by means of chemoenzymatic methods. The stereochemistry present at the homochiral cyclohexadiene-cis-1,2-diols derived from the arene biotransformation and the enantioselective ring opening of a non-isolated vinylepoxide derivative permitted the absolute configuration of the carbon bearing the hydroxyl groups at the target molecules to be established. All three conduritols and two intermediates were crystallized, and their structures were confirmed by X-ray diffraction. The three conduritols and intermediates were isostructural. The versatility of our methodology is noteworthy to expand the preparation of conduritol C analogs starting from toluene dioxygenase (TDO) monosubstituted arene substrates.
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Affiliation(s)
- Gaurao D Tibhe
- Laboratorio de Síntesis Orgánica, Departamento de Química Orgánica, Facultad de Química, Av. Gral. Flores 2124, Universidad de la República, Montevideo CP11800, Uruguay.
| | - Mario A Macías
- Cryssmat-Lab/DETEMA, Facultad de Química, Av. Gral. Flores 2124, Universidad de la República, Montevideo CP11800, Uruguay.
- Department of Chemistry, Universidad de los Andes, Carrera 1 N8 18 A-12, Bogotá 111711, Colombia.
| | - Valeria Schapiro
- Laboratorio de Síntesis Orgánica, Departamento de Química Orgánica, Facultad de Química, Av. Gral. Flores 2124, Universidad de la República, Montevideo CP11800, Uruguay.
| | - Leopoldo Suescun
- Cryssmat-Lab/DETEMA, Facultad de Química, Av. Gral. Flores 2124, Universidad de la República, Montevideo CP11800, Uruguay.
| | - Enrique Pandolfi
- Laboratorio de Síntesis Orgánica, Departamento de Química Orgánica, Facultad de Química, Av. Gral. Flores 2124, Universidad de la República, Montevideo CP11800, Uruguay.
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7
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Feng YJ, Chen YH, Huang SL, Liu YH, Lin YC. Cyclization Reactions of Aryl Propargyl Acetates with Tethered Epoxide Induced by Ruthenium Complex. Chem Asian J 2017; 12:3027-3038. [PMID: 28980768 DOI: 10.1002/asia.201701070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/14/2017] [Indexed: 01/05/2023]
Abstract
Reactions of the ruthenium complex [Ru]Cl ([Ru]=Cp(PPh3 )2 Ru; Cp=η5 -C5 H5 ) with several aryl propargyl acetates, each with an ortho-substituted chain of various length containing an epoxide on the aromatic ring and with or without methyl substitutents on the epoxide ring, bring about novel cyclizations. The cyclization reactions of HC≡CCH(OAc)(C6 H4 )CH2 (RC2 H2 O) (R=H, 6 a; R=CH3 , 6 b, where RC2 H2 O is an epoxide ring) in MeOH give the vinylidene complexes 5 a-b, respectively, each with the Cβ integrated into a tetrahydro-5H-benzo[7]annulen-6-ol ring. A C-C bond formation takes place between the propargyl acetate and the less substituted carbon of the epoxide ring. Further cyclizations of 5 a-b induced by HBF4 give the corresponding vinylidene complexes 8 a-b each with a new 8-oxabicyclo-[3.2.1]octane ring by removal of a methanol molecule in high yield. For similar aryl propargyl acetates with a shorter epoxide chain, the cyclization gives a mixture of a vinylidene complex with a tetrahydronaphthalen-1-ol ring and a carbene complex with a tricyclic indeno-furan ring. For the cyclization of 18, with a longer epoxide chain, opening of the epoxide is required to afford the vicinal bromohydrin 22, then tandem cyclization occurs in one pot. Products are characterized by spectroscopic methods as well as by XRD analysis.
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Affiliation(s)
- Yi-Jhen Feng
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Yi-Hsin Chen
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Shou-Ling Huang
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Ying-Chih Lin
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
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8
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Di Bussolo V, Frau I, Favero L, Bordoni V, Crotti S, Uccello Barretta G, Balzano F, Crotti P. Carba- d , l -allal- and - d , l -galactal-derived vinyl N -nosyl aziridines as useful tools for the synthesis of 4-deoxy-4-( N -nosylamino)-2,3-unsaturated-5 a -carbasugars. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Dearomative dihydroxylation with arenophiles. Nat Chem 2016; 8:922-8. [PMID: 27657867 DOI: 10.1038/nchem.2594] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/12/2016] [Indexed: 11/08/2022]
Abstract
Aromatic hydrocarbons are some of the most elementary feedstock chemicals, produced annually on a million metric ton scale, and are used in the production of polymers, paints, agrochemicals and pharmaceuticals. Dearomatization reactions convert simple, readily available arenes into more complex molecules with broader potential utility, however, despite substantial progress and achievements in this field, there are relatively few methods for the dearomatization of simple arenes that also selectively introduce functionality. Here we describe a new dearomatization process that involves visible-light activation of small heteroatom-containing organic molecules-arenophiles-that results in their para-cycloaddition with a variety of aromatic compounds. The approach uses N-N-arenophiles to enable dearomative dihydroxylation and diaminodihydroxylation of simple arenes. This strategy provides direct and selective access to highly functionalized cyclohexenes and cyclohexadienes and is orthogonal to existing chemical and biological dearomatization processes. Finally, we demonstrate the synthetic utility of this strategy with the concise synthesis of several biologically active compounds and natural products.
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10
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Panda A, Biswas RG, Pal S. A unified and common intermediate strategy for the asymmetric total synthesis of 3-deoxy-neo-inositol and conduritol E. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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11
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12
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Affiliation(s)
- Ashwini A. Ghogare
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Alexander Greer
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
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13
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Raghavan S, Chiluveru RK, Ganapathy Subramanian S. Stereoselective Formal Synthesis of (+)- and (−)-Cyclophellitol and (−)-Conduritol-B and Synthesis of (−)-Conduramine-B Derivative Using a Sulfinyl Moiety for C–O Bond Formation and α-Chloro Sulfide for C–C Bond Formation. J Org Chem 2016; 81:4252-61. [DOI: 10.1021/acs.joc.6b00616] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sadagopan Raghavan
- Natural Products
Chemistry
Division, Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Ravi Kumar Chiluveru
- Natural Products
Chemistry
Division, Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - S. Ganapathy Subramanian
- Natural Products
Chemistry
Division, Indian Institute of Chemical Technology, Hyderabad 500007, India
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14
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Christmann M, Hu J, Kitamura M, Stoltz B. Tetrahedron reports on organic chemistry. Tetrahedron 2015. [DOI: 10.1016/s0040-4020(15)00744-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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García-García C, Redondo MC, Ribagorda M, Carreño MC. Reactions ofp-Quinols with Aldehydes and Imines: Stereoselective Access to Polyheterobicyclic and Tricyclic Systems. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403114] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Das D, Halder J, Bhuniya R, Nanda S. Stereoselective Synthesis of Enantiopure Oxetanes, a Carbohydrate Mimic, an ϵ-Lactone, and Cyclitols from Biocatalytically Derived β-Hydroxy Esters as Chiral Precursors. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402521] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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A highly stereocontrolled asymmetric total synthesis of epimer of (+)-7-deoxypancratistatin. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.125] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2013. [DOI: 10.1016/s0040-4020(13)01252-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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20
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Aydın G, Savran T, Aktaş F, Baran A, Balci M. Stereoselective syntheses of racemic quercitols and bromoquercitols starting from cyclohexa-1,4-diene: gala-, epi-, muco-, and neo-quercitol. Org Biomol Chem 2013; 11:1511-24. [DOI: 10.1039/c3ob26909d] [Citation(s) in RCA: 11] [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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21
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Ekmekci Z, Balci M. Synthesis of a New 2,3-Diaminoconduritol with Conduritol F Structure. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200582] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Yadav AA, Sarang PS, Sau M, Thirumalairajan S, Trivedi GK, Salunkhe MM. Synthesis of optically active seven-membered 1,5-anhydrocarbasugars and 1,4,5-tribenzoyloxy-2-ethoxy cycloheptanes via [5+2] cycloaddition. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.05.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Palframan MJ, Kociok-Köhn G, Lewis SE. Photooxygenation of a Microbial Arene Oxidation Product and Regioselective Kornblum-DeLaMare Rearrangement: Total Synthesis of Zeylenols and Zeylenones. Chemistry 2012; 18:4766-74. [DOI: 10.1002/chem.201104035] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Indexed: 11/11/2022]
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24
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Baran A, Bekarlar M, Aydin G, Nebioglu M, Şahin E, Balci M. Synthesis of bishomoinositols and an entry for construction of a substituted 3-oxabicyclo[3.3.1]nonane skeleton. J Org Chem 2012; 77:1244-50. [PMID: 22229812 DOI: 10.1021/jo202494v] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
1,3,3a,7a-Tetrahydro-2-benzofuran was used as key compound for the synthesis of various bishomoinositol derivatives. The diene was subjected to an epoxidation reaction for further functionalization of the diene unit. The bisepoxide obtained was submitted to a ring-opening reaction with acid in the presence of water. Various bishomoinositols were synthesized. However, when the reaction was carried out in the presence of acetic anhydride, a substituted 3-oxabicyclo[3.3.1]nonane skeleton was formed. The mechanism of the formation of the products is discussed.
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Affiliation(s)
- Arif Baran
- Department of Chemistry, Sakarya University, 54100 Sakarya, Turkey.
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25
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Medium-ring aminocyclitols: a concise synthesis of nine-membered aminocarbasugar analogs and the solid-state supramolecular architectures of two key precursors. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.141] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2011. [DOI: 10.1016/s0040-4020(11)00770-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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28
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Mahapatra T, Nanda S. Asymmetric synthesis of aryl cyclitols based on 1,2,3,4-tetrahydronaphthalene scaffolds. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Ahmad S, Thomas LH, Sutherland A. Stereoselective synthesis of polyhydroxylated aminocyclohexanes. Org Biomol Chem 2011; 9:2801-8. [DOI: 10.1039/c0ob00619j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2010. [DOI: 10.1016/s0040-4020(10)01735-7] [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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31
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Lu PH, Yang CS, Devendar B, Liao CC. Syntheses of Optically Pure Conduramines via the Strategy of Hetero Diels−Alder Reaction of Masked o-Benzoquinones with Homochiral Nitroso Dienophiles. Org Lett 2010; 12:2642-5. [DOI: 10.1021/ol100840n] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ping-Hsun Lu
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, and Department of Chemistry, Chung Yuan Christian University, Chungli 32023, Taiwan
| | - Ching-Shun Yang
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, and Department of Chemistry, Chung Yuan Christian University, Chungli 32023, Taiwan
| | - Badugu Devendar
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, and Department of Chemistry, Chung Yuan Christian University, Chungli 32023, Taiwan
| | - Chun-Chen Liao
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, and Department of Chemistry, Chung Yuan Christian University, Chungli 32023, Taiwan
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32
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Synthesis of novel cyano-cyclitols and their stereoselective biotransformation catalyzed by Rhodococcus erythropolis A4. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.04.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Kelebekli L, Kara Y, Celik M. Synthesis of a new class of aminocyclitol analogues with the conduramine D-2 configuration. Beilstein J Org Chem 2010; 6:15. [PMID: 20485597 PMCID: PMC2870711 DOI: 10.3762/bjoc.6.15] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Accepted: 02/07/2010] [Indexed: 11/23/2022] Open
Abstract
A new class of aminocyclitol derivatives with the bicyclo[4.2.0]octane skeleton was synthesized starting from cyclooctatetraene. Photooxygenation of trans-7,8-diacetoxy- and cis-7,8-dichlorobicyclo[4.2.0]octa-2,4-diene afforded the bicyclic endoperoxides. Reduction of the latter with thiourea followed by a Pd(0) catalyzed ionization/cyclization reaction gave the corresponding oxazolidinone derivatives. Oxidation of the double bond with KMnO₄ or OsO₄ followed by acetylation gave the acetate derivatives, the exact configuration of which was determined by spectroscopic methods. Hydrolysis of the oxazolidinone rings and removal of the acetate groups furnished the desired aminocyclitols.
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Affiliation(s)
- Latif Kelebekli
- Atatürk University, Faculty of Science, Department of Chemistry, TR-25240, Erzurum, Turkey
| | - Yunus Kara
- Atatürk University, Faculty of Science, Department of Chemistry, TR-25240, Erzurum, Turkey
| | - Murat Celik
- Atatürk University, Faculty of Science, Department of Chemistry, TR-25240, Erzurum, Turkey
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Redondo MC, Ribagorda M, Carreño MC. Exploring Morita-Baylis-Hillman reactions of p-quinols. Org Lett 2010; 12:568-71. [PMID: 20055444 DOI: 10.1021/ol902763g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Morita-Baylis-Hillman reaction of p-methylquinols with activated aromatic aldehydes has been studied. Depending on the reaction conditions (solvent and additives), three different products were formed. A mono or double Morita-Baylis-Hillman adduct and a fused 1,3-dioxolane could be obtained in good chemical yields. The use of non-nucleophilic bases to promote the reaction suggested an autocatalytic mechanism.
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Affiliation(s)
- María C Redondo
- Departamento de Química Orgánica (Módulo 01), Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente 7, Cantoblanco, 28049-Madrid, Spain
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35
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Mehta G, Sen S. From aromatics to conjoined inositols: stereoselective oxyfunctionalization of anthracene. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.11.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Bellomo A, Bertucci A, Stefani H, Vázquez Á, Gonzalez D. Novel deoxy-selenylconduritols: chemoenzymatic synthesis and biological evaluation. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Baran EJ. Oxovanadium(IV) complexes of carbohydrates: A brief overview. J Inorg Biochem 2009; 103:547-53. [DOI: 10.1016/j.jinorgbio.2008.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Revised: 09/29/2008] [Accepted: 10/03/2008] [Indexed: 10/21/2022]
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38
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Semi-synthetic analogs of pinitol as potential inhibitors of TNF-α cytokine expression in human neutrophils. Bioorg Med Chem Lett 2009; 19:1939-43. [DOI: 10.1016/j.bmcl.2009.02.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Revised: 01/22/2009] [Accepted: 02/12/2009] [Indexed: 11/19/2022]
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39
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Şahin E, Baran A, Balcı M. rac-(2 R*,3 S*,5 S*,6 R*,7 S*,8 S*)-7,8-Dichlorobicyclo[2.2.2]octane-2,3,5,6-tetrayl tetraacetate. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o526-7. [PMID: 21582188 PMCID: PMC2968458 DOI: 10.1107/s160053680900484x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Accepted: 02/10/2009] [Indexed: 11/10/2022]
Abstract
The title compound, C16H20Cl2O8, contains a central bicyclo[2.2.2]octane skeleton with slightly twisted conformation. In this structure, the C—C bond lengths are in the range 1.525 (2)–1.552 (2) Å. Two sides of this skeleton have cis,cis acetoxy substituents and the Cl atoms have a trans arrangement. An extensive network of weak C—H⋯O interactions stabilizes the crystal structure.
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40
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Synthesis of bromo-conduritol-B and bromo-conduritol-C as glycosidase inhibitors. Carbohydr Res 2009; 344:426-31. [DOI: 10.1016/j.carres.2008.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Revised: 11/05/2008] [Accepted: 12/02/2008] [Indexed: 11/23/2022]
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41
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Baran A, Balci M. Stereoselective Synthesis of Bishomo-inositols as Glycosidase Inhibitors. J Org Chem 2008; 74:88-95. [DOI: 10.1021/jo801344f] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arif Baran
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey, and Department of Chemistry, Sakarya University, 54100 Sakarya, Turkey
| | - Metin Balci
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey, and Department of Chemistry, Sakarya University, 54100 Sakarya, Turkey
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42
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On the stereostructures of (+)-eupenoxide and (−)-3′,4′-dihydrophomoxide: a caveat on the spectral comparisons of oxygenated cyclohexenoids. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.06.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Sengül ME, Menzek A, Sahin E, Arik M, Saracoglu N. Synthesis of cyclopropane-annulated conduritol derivatives: norcaran-2,3,4,5-tetraoles. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.05.066] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Tetrahedron reports on organic chemistry. Tetrahedron 2008. [DOI: 10.1016/s0040-4020(08)00897-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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45
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Baran A, Günel A, Balci M. Synthesis of Bicyclo[2.2.2]octane-2,3,5,6,7,8 hexols (Bishomoinositols) as Glycosidase Inhibitors. J Org Chem 2008; 73:4370-5. [DOI: 10.1021/jo800553u] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arif Baran
- Departments of Chemistry, Middle East Technical University, 06531 Ankara, Turkey, Sakarya University, 54100 Sakarya, Turkey, and Sinop University, 57000, Sinop, Turkey
| | - Aslihan Günel
- Departments of Chemistry, Middle East Technical University, 06531 Ankara, Turkey, Sakarya University, 54100 Sakarya, Turkey, and Sinop University, 57000, Sinop, Turkey
| | - Metin Balci
- Departments of Chemistry, Middle East Technical University, 06531 Ankara, Turkey, Sakarya University, 54100 Sakarya, Turkey, and Sinop University, 57000, Sinop, Turkey
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46
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Bayón P, Marjanet G, Toribio G, Alibés R, de March P, Figueredo M, Font J. An Efficient Protocol for the Enantioselective Preparation of a Key Polyfunctionalized Cyclohexane. New Access to (R)- and (S)-4-Hydroxy-2-cyclohexenone and (R)- and (S)-trans-Cyclohex-2-ene-1,4-diol. J Org Chem 2008; 73:3486-91. [DOI: 10.1021/jo800107h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pau Bayón
- Universitat Autònoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
| | - Georgina Marjanet
- Universitat Autònoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
| | - Gladis Toribio
- Universitat Autònoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
| | - Ramon Alibés
- Universitat Autònoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
| | - Pere de March
- Universitat Autònoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
| | - Marta Figueredo
- Universitat Autònoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
| | - Josep Font
- Universitat Autònoma de Barcelona, Departament de Química, 08193 Bellaterra, Spain
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47
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Cantekin S, Çalışkan R, Şahin E, Balci M. Synthesis of Phenyl-Substituted Conduritol B and Its Mechanism of Formation. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790231] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)01371-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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49
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)00834-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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50
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)00205-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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