1
|
Yao JJ, Ding R, Chen X, Zhai H. Asymmetric Total Synthesis of (+)-Alstonlarsine A. J Am Chem Soc 2022; 144:14396-14402. [PMID: 35894835 DOI: 10.1021/jacs.2c06518] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The first asymmetric total synthesis of (+)-alstonlarsine A has been realized. The prominent features of the current synthesis include the following: (i) a Pd/self-adaptable ligand complex-catalyzed asymmetric allylic alkylation of 2-methyl-2-cyclopentenyl carbonate with 2-indolylsubstituted dimethyl malonate to establish the key stereocenter of C15, (ii) an intramolecular nitrile oxide-alkene [3 + 2] cycloaddition (INOC [3 + 2]) to construct the cyclohepta[b]indole backbone with the installment of the requisite stereochemistry of the all-carbon quaternary center of C20, and (iii) a late-stage interrupted Pictet-Spengler reaction (IPSR) to rapidly assemble the core structure of (+)-alstonlarsine A.
Collapse
Affiliation(s)
- Jun-Jun Yao
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Rui Ding
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Xiaoming Chen
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,The State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Hongbin Zhai
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,Shenzhen Bay Laboratory, Shenzhen 518055, China.,Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| |
Collapse
|
2
|
Chloramine-T (N-chloro-p-toluenesulfonamide sodium salt), a versatile reagent in organic synthesis and analytical chemistry: An up to date review. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2021.101416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
3
|
Senapati BK. Recent progress in the synthesis of the furanosteroid family of natural products. Org Chem Front 2021. [DOI: 10.1039/d0qo01454k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review focuses on an overview of recent advances in the synthesis of furanosteroids and illustrates their applications in medicinal chemistry over the period of 2005–present.
Collapse
|
4
|
Sowmya PT, Rai KML, Sudhir A, Kotian SY. Chloramine-T in Organic Synthesis and Analysis of Organic Functional Groups: A Review. Aust J Chem 2021. [DOI: 10.1071/ch21089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The diverse nature of Chloramine-T, the sodium salt of N-chloro-p-toluenesulfonamide, abbreviated as CAT, acts as a source of halonium cation and nitrogen anion, and acts as both base and nucleophile. It reacts with broad range of functional groups and brings divergent molecular transformations to synthetic chemistry. CAT has also gained much recognition as a mild oxidant for several organic moieties and has been used as a versatile reagent for the estimation of various functional groups in analytical chemistry. This review relays the synthetic and analytic utility of CAT from different literature sources. As aspects of the synthetic utility of CAT have not previously been reviewed, this article gives a comprehensive profile of the CAT reagent for further research development.
Collapse
|
5
|
Affiliation(s)
- Yang Ji
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai 200062, China
| | - Zhengyuan Xin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai 200062, China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 3663N Zhongshan Road, Shanghai 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai 200062, China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 3663N Zhongshan Road, Shanghai 200062, China
| |
Collapse
|
6
|
Huang T, Wang Q, Kong D, Wu M. Diastereoselective catalyst-free construction of isoxazolidine-cis-fused phospha dihydrocoumarins via an intramolecular Nitrone–Vinylphosphonate dipolar cycloaddition. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
7
|
Chen CL, Chiu TW, Chen YW, Fang JM. Substituent and solvent effects in the 1,3-dipolar cycloadditions for synthesis of anti-influenza agent peramivir and its analog. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
8
|
Willén D, Bengtsson D, Clementson S, Tykesson E, Manner S, Ellervik U. Synthesis of Double-Modified Xyloside Analogues for Probing the β4GalT7 Active Site. J Org Chem 2018; 83:1259-1277. [DOI: 10.1021/acs.joc.7b02809] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Willén
- Centre for Analysis and Synthesis,
Centre for Chemistry and Chemical Engineering, Lund University, P.O.
Box 124, SE-221 00 Lund, Sweden
| | - Dennis Bengtsson
- Centre for Analysis and Synthesis,
Centre for Chemistry and Chemical Engineering, Lund University, P.O.
Box 124, SE-221 00 Lund, Sweden
| | - Sebastian Clementson
- Centre for Analysis and Synthesis,
Centre for Chemistry and Chemical Engineering, Lund University, P.O.
Box 124, SE-221 00 Lund, Sweden
| | - Emil Tykesson
- Centre for Analysis and Synthesis,
Centre for Chemistry and Chemical Engineering, Lund University, P.O.
Box 124, SE-221 00 Lund, Sweden
| | - Sophie Manner
- Centre for Analysis and Synthesis,
Centre for Chemistry and Chemical Engineering, Lund University, P.O.
Box 124, SE-221 00 Lund, Sweden
| | - Ulf Ellervik
- Centre for Analysis and Synthesis,
Centre for Chemistry and Chemical Engineering, Lund University, P.O.
Box 124, SE-221 00 Lund, Sweden
| |
Collapse
|
9
|
Gioti EG, Koftis TV, Neokosmidis E, Vastardi E, Kotoulas SS, Trakossas S, Tsatsas T, Anagnostaki EE, Panagiotidis TD, Zacharis C, Tolika EP, Varvogli AA, Andreou T, Gallos JK. A new scalable synthesis of entecavir. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
10
|
Jiang L, Liu X, Yuan P, Zhang Y, Chen X. Stereoselective Synthesis of (+)-Annuionone A and (-)-Annuionone B. JOURNAL OF NATURAL PRODUCTS 2017; 80:805-812. [PMID: 28338330 DOI: 10.1021/acs.jnatprod.6b00522] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A stereoselective synthetic approach was utilized to synthesize enantiopure annuionones A (1b) and B (2b), two ionone-type norsesquiterpenoids that both bear a 6-oxabicyclo[3.2.1]octane framework and possess allelopathic activity. A stereoselective Diels-Alder reaction based on chiral trisubstituted dienophile 20 was employed to obtain the optically active polysubstituted cyclohexane core of both natural products. Using this approach, (+)-annuionone A (1b) and (-)-annuionone B (2b) were synthesized from lactol (+)-15 in 10% overall yield.
Collapse
Affiliation(s)
- Lizhen Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, People's Republic of China
| | - Xiaojing Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, People's Republic of China
| | - Po Yuan
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, People's Republic of China
| | - Yanli Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, People's Republic of China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University , Chengdu 610064, People's Republic of China
| |
Collapse
|
11
|
Glucose-derived spiro-isoxazolines are anti-hyperglycemic agents against type 2 diabetes through glycogen phosphorylase inhibition. Eur J Med Chem 2016; 108:444-454. [DOI: 10.1016/j.ejmech.2015.12.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/13/2015] [Accepted: 12/02/2015] [Indexed: 01/11/2023]
|
12
|
Shing TKM, Cheng HM. Intramolecular direct aldol reactions of sugar 2,7-diketones: syntheses of hydroxylated cycloalka(e)nones. Org Biomol Chem 2015; 13:4795-802. [DOI: 10.1039/c5ob00253b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A regio- and stereoselective intramolecular direct aldol reaction of 2,7-diketones derived from carbohydrates has been developed to construct cycloalkanones 7, which were dehydrated to obtain heavily oxygenated cycloalkenones 8.
Collapse
Affiliation(s)
- Tony K. M. Shing
- Department of Chemistry and Center of Novel Functional Molecules
- The Chinese University of Hong Kong
- Shatin
- Hong Kong, China
| | - Hau M. Cheng
- Department of Chemistry and Center of Novel Functional Molecules
- The Chinese University of Hong Kong
- Shatin
- Hong Kong, China
| |
Collapse
|
13
|
Panda A, Das S, Pal S. Highly regio- and diastereoselective, acidic clay supported intramolecular nitrile oxide–alkene cycloaddition on d-ribose derived nitriles: an efficient synthetic route to isoxazoline fused five and six membered carbocycles. Carbohydr Res 2014; 398:13-8. [DOI: 10.1016/j.carres.2014.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 06/02/2014] [Accepted: 06/06/2014] [Indexed: 12/19/2022]
|
14
|
Gonçalves RSB, Dos Santos M, Bernadat G, Bonnet-Delpon D, Crousse B. A one-pot synthesis of 3-trifluoromethyl-2-isoxazolines from trifluoromethyl aldoxime. Beilstein J Org Chem 2013; 9:2387-94. [PMID: 24367404 PMCID: PMC3869255 DOI: 10.3762/bjoc.9.275] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 10/08/2013] [Indexed: 12/31/2022] Open
Abstract
Functionalized 3-trifluoromethyl-2-isoxazolines and 3-trifluoromethylisoxazoles were easily prepared from trifluoromethyl aldoxime 2 under mild conditions by using DIB as oxidant. Theoretical studies of the reactivity of trifluoroacetonitrile oxide 4 toward olefins and alkynes were carried out. The 3-trifluoromethyl-2-isoxazolines were ring-opened with NaBH4 and NiCl2 to yield the corresponding trifluoromethylated γ-amino alcohols.
Collapse
Affiliation(s)
- Raoni S B Gonçalves
- BioCIS CNRS, Faculté de Pharmacie, Labex-LERMIT, Univ Paris Sud, 5 rue J. B. Clément, 92290 Châtenay-Malabry, France
| | - Michael Dos Santos
- BioCIS CNRS, Faculté de Pharmacie, Labex-LERMIT, Univ Paris Sud, 5 rue J. B. Clément, 92290 Châtenay-Malabry, France
| | - Guillaume Bernadat
- BioCIS CNRS, Faculté de Pharmacie, Labex-LERMIT, Univ Paris Sud, 5 rue J. B. Clément, 92290 Châtenay-Malabry, France
| | - Danièle Bonnet-Delpon
- BioCIS CNRS, Faculté de Pharmacie, Labex-LERMIT, Univ Paris Sud, 5 rue J. B. Clément, 92290 Châtenay-Malabry, France
| | - Benoit Crousse
- BioCIS CNRS, Faculté de Pharmacie, Labex-LERMIT, Univ Paris Sud, 5 rue J. B. Clément, 92290 Châtenay-Malabry, France
| |
Collapse
|
15
|
Heaney F. Nitrile Oxide/Alkyne Cycloadditions - A Credible Platform for Synthesis of Bioinspired Molecules by Metal-Free Molecular Clicking. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101823] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
16
|
|
17
|
Synthetic studies on bioactive natural polyketides: intramolecular nitrile oxide-olefin cycloaddition approach for construction of a macrolactone skeleton of macrosphelide B. Molecules 2011; 16:4850-60. [PMID: 21666551 PMCID: PMC6264422 DOI: 10.3390/molecules16064850] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 05/26/2011] [Accepted: 06/07/2011] [Indexed: 11/24/2022] Open
Abstract
Studies on the synthesis of macrosphelide B via an intramolecular nitrile oxide-olefin cycloaddition (INOC) is described. In particular, an asymmetric INOC approach using phase transfer catalysts seems to be a potentially efficient and versatile procedure for the construction of the macrolactone skeleton of macrosphelide B in terms of facial selectivity. Our preliminary and unprecedented stereoselective procedure is anticipated to be usefully applied through further studies for the synthesis of the macrosphelide family.
Collapse
|
18
|
Li Y, Meng Y, Meng X, Li Z. Stereoselective synthesis of polyoxygenated linear diaza-triquinanes via intramolecular 1,3-dipolar cycloaddition of sugar-derived hex-5-enals. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
19
|
Pandey G, Rajender S. A Temperature‐Guided Diastereoselectivity Switch During the Desymmetrization of
meso
‐7‐Azabicyclo[2.2.1]heptadiene: New Strategy towards the Synthesis of Aminocyclitols. Chemistry 2011; 17:6304-8. [DOI: 10.1002/chem.201100418] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Ganesh Pandey
- Division of Organic Chemistry, National Chemical Laboratory, Pune‐411 008 (India), Fax: (+91) 202590‐2628
| | - Salla Rajender
- Division of Organic Chemistry, National Chemical Laboratory, Pune‐411 008 (India), Fax: (+91) 202590‐2628
| |
Collapse
|
20
|
Synthesis of new isoxazoline-based acidic amino acids and investigation of their affinity and selectivity profile at ionotropic glutamate receptors. Eur J Med Chem 2011; 46:787-93. [DOI: 10.1016/j.ejmech.2010.12.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 12/17/2010] [Accepted: 12/17/2010] [Indexed: 11/17/2022]
|
21
|
Rauter AP, Xavier NM, Lucas SD, Santos M. Zeolites and other silicon-based promoters in carbohydrate chemistry. Adv Carbohydr Chem Biochem 2010; 63:29-99. [PMID: 20381704 DOI: 10.1016/s0065-2318(10)63003-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Silicon-based materials, namely zeolites, clays, and silica gel have been widely used in organic synthesis, allowing mild reaction conditions and environmentally friendly methodologies. These heterogeneous catalysts are easy to handle, possess nontoxic and noncorrosive character and offer the possibility of recovery and reuse, thus contributing to clean and sustainable organic transformations. Moreover, they present shape-selective properties and provide stereo- and regiocontrol in chemical reactions. Herein, we survey the most significant applications of silicon-based materials as catalysts in carbohydrate chemistry, to mediate important transformations such as glycosylation, sugar protection and deprotection, and hydrolysis and dehydration. Emphasis is placed on their promising synthetic potential in comparison with conventional catalysts.
Collapse
|
22
|
Ramachandiran K, Karthikeyan K, Muralidharan D, Perumal P. Synthesis of isoxazolobenzoxepanes via Michael addition of indoles to nitroalkenes and sequential intramolecular nitrile oxide cycloaddition. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
23
|
Shing TKM, So KH, Kwok WS. Carbocyclization of carbohydrates: diastereoselective synthesis of (+)-gabosine F, (-)-gabosine O, and (+)-4-epi-gabosine O. Org Lett 2009; 11:5070-3. [PMID: 19803475 DOI: 10.1021/ol902071e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Exploitation of silica gel/chloramine T mediated intramolecular nitrile oxide-alkene cycloaddition (INOC) of sugar-derived oximes to carbocycles furnished the first synthesis of gabosine F from l-arabinose in 12 steps with 23% overall yield, thereby confirming its absolute configuration. Similarly, efficient syntheses of gabosine O and 4-epi-gabosine O were accomplished from D-mannose in 9 and 11 steps with 41% and 38% overall yields, respectively, involving INOC, regioselective dehydration, and diastereoselective hydrogenation as the key steps.
Collapse
Affiliation(s)
- Tony K M Shing
- Department of Chemistry and Center of Novel Functional Molecules, The Chinese Univeristy of Hong Kong, Shatin, Hong Kong, China.
| | | | | |
Collapse
|
24
|
|
25
|
Karthikeyan K, Veenus Seelan T, Lalitha K, Perumal P. Synthesis and antinociceptive activity of pyrazolyl isoxazolines and pyrazolyl isoxazoles. Bioorg Med Chem Lett 2009; 19:3370-3. [DOI: 10.1016/j.bmcl.2009.05.055] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2009] [Revised: 05/12/2009] [Accepted: 05/14/2009] [Indexed: 10/20/2022]
|
26
|
Kamimura A, Yoshida T, Uno H. Stereoselective synthesis of azepines through the conjugate addition of formamides to nitroalkenes and subsequent intramolecular nitrile oxide cycloaddition reaction. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.09.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
27
|
Chatterjee N, Pandit P, Halder S, Patra A, Maiti DK. Generation of Nitrile Oxides under Nanometer Micelles Built in Neutral Aqueous Media: Synthesis of Novel Glycal-Based Chiral Synthons and Optically Pure 2,8-Dioxabicyclo[4.4.0]decene Core. J Org Chem 2008; 73:7775-8. [DOI: 10.1021/jo801337k] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nirbhik Chatterjee
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Palash Pandit
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Samiran Halder
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Amarendra Patra
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Dilip K. Maiti
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| |
Collapse
|
28
|
Novel Galf-disaccharide mimics: synthesis by way of 1,3-dipolar cycloaddition reactions in water. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.08.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
29
|
Shing TKM, Cheng HM. Intramolecular direct aldol reactions of sugar diketones: syntheses of valiolamine and validoxylamine G. Org Lett 2008; 10:4137-9. [PMID: 18729372 DOI: 10.1021/ol801889n] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new and stereoselective intramolecular direct aldol reaction of diketones derived from carbohydrates has been developed to construct carbocycles with D-gluco-, D-galacto-, D-manno-, and L-ido-configurations. The stereochemical outcome of the aldol reaction of the diketone is dependent on the base used. Transformation of D-gluco-aldols readily affords valiolamine which also constitutes a formal synthesis of voglibose. Facile conversion of D-gluco-cyclohexanones into validoxylamine G has been achieved in 12 steps with 15.1% overall yield from D-glucose.
Collapse
Affiliation(s)
- Tony K M Shing
- Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
| | | |
Collapse
|
30
|
Affiliation(s)
- Antonio Delgado
- Research Unit on BioActive Molecules (RUBAM), Departament de Química Orgànica Biològica, Institut d'Investigacions Químiques i Ambientals de Barcelona (IIQAB–C.S.I.C), Jordi Girona 18–26, 08034 Barcelona, Spain
- Universitat de Barcelona, Facultat de Farmàcia, Unitat de Química Farmacèutica (Unitat Associada al CSIC), Avgda. Juan XXIII, s/n, 08028 Barcelona, Spain
| |
Collapse
|
31
|
Shing TKM, Cheng HM, Wong WF, Kwong CSK, Li J, Lau CBS, Leung PS, Cheng CHK. Enantiospecific Synthesis of Pseudoacarviosin as a Potential Antidiabetic Agent. Org Lett 2008; 10:3145-8. [DOI: 10.1021/ol8010503] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tony K. M. Shing
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Hau M. Cheng
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Wai F. Wong
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Connie S. K. Kwong
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Jianmei Li
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Clara B. S. Lau
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Po Sing Leung
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Christopher H. K. Cheng
- Departments of Chemistry, Biochemistry, and Physiology, School of Pharmacy, and, Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| |
Collapse
|