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Mandal D, Kumar A, Patil NT. Gold catalysis in organic synthesis: fifteen years of research in India. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2022. [DOI: 10.1007/s43538-022-00106-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Jeanneret R, Walz C, van Meerbeek M, Coppock S, Galan MC. AuCl 3-Catalyzed Hemiacetal Activation for the Stereoselective Synthesis of 2-Deoxy Trehalose Derivatives. Org Lett 2022; 24:6304-6309. [PMID: 35994370 PMCID: PMC9442795 DOI: 10.1021/acs.orglett.2c02530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new practical, catalytic, and highly stereoselective method for directly accessing 1,1-α,α'-linked 2-deoxy trehalose analogues via AuCl3-catalyzed dehydrative glycosylation using hemiacetal glycosyl donors and acceptors is described. The method relies on the chemoselective Brønsted acid-type activation of tribenzylated 2-deoxy hemiacetals in the presence of other less reactive hemiacetals.
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Affiliation(s)
- Robin Jeanneret
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Carlo Walz
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Maarten van Meerbeek
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Sarah Coppock
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - M Carmen Galan
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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Sayantika Bhakta M, Ghosh T. Gold‐Catalyzed Carboxylative Cyclization Reactions: Recent Advances. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000694] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Ms. Sayantika Bhakta
- Department of Applied Sciences MaulanaAbulKalam Azad University of Technology, West Bengal Simhat, Haringhata- 741249 Nadia, West Bengal India
| | - Tapas Ghosh
- Department of Applied Sciences MaulanaAbulKalam Azad University of Technology, West Bengal Simhat, Haringhata- 741249 Nadia, West Bengal India
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Padhi B, Reddy GS, Mallampudi NA, Choudhury UM, Mohapatra DK. CuBr 2-catalyzed diastereoselective allylation: total synthesis of decytospolides A and B and their C6-epimers. Org Biomol Chem 2020; 18:2685-2695. [PMID: 32202577 DOI: 10.1039/c9ob02689d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient CuBr2-catalyzed diastereoselective allylation of a cyclic hemiacetal with allyltrimethylsilane as a nucleophile has been developed. The protocol offers a cost effective, protecting group tolerant, and operationally simple approach to 2,6-trans-disubstituted tetrahydropyran with excellent diastereoselectivity. Furthermore, the application of this methodology has been demonstrated in the total synthesis of decytospolides A and B and their C6-epimers.
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Affiliation(s)
- Birakishore Padhi
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India.
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Padma R, Srinivas B, Yadav JS, Mohapatra DK. General Asymmetric Synthetic Strategy for the α-Alkylated 2,5,6-Trisubstituted Pyran of Indanomycin and Related Natural Products. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ravishetty Padma
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Beduru Srinivas
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Jhillu S. Yadav
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
- School of Science; Indrashil University; Kadi Gujarat India
| | - Debendra K. Mohapatra
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500 007 Hyderabad India
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Mallampudi NA, Choudhury UM, Mohapatra DK. Total Synthesis of (−)-Citreoisocoumarin, (−)-Citreoisocoumarinol, (−)-12-epi-Citreoisocoumarinol, and (−)-Mucorisocoumarins A and B Using a Gold(I)-Catalyzed Cyclization Strategy. J Org Chem 2020; 85:4122-4129. [DOI: 10.1021/acs.joc.9b03278] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- N. Arjunreddy Mallampudi
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Utkal Mani Choudhury
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - Debendra K. Mohapatra
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
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Bharath Y, Choudhury UM, Sadhana N, Mohapatra DK. The Mukaiyama type aldol reaction for the synthesis of trans-2,6-disubstituted tetrahydropyrans: synthesis of diospongin A and B. Org Biomol Chem 2019; 17:9169-9181. [PMID: 31595914 DOI: 10.1039/c9ob01549c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient synthesis protocol for the preparation of trans-2,6-disubstituted tetrahydropyrans by the reaction of 1-phenyl-1-triemthylsiloxyethylene with six membered cyclic hemiacetals in the presence of iodine is developed. This reaction proceeds smoothly under mild conditions employing a catalytic amount of molecular iodine. The feature of this novel conversion includes milder reaction conditions, broader substrate scope, functional group tolerance and good diastereoselectivity. The efficiency and practicality of the current method were successfully displayed in the total synthesis of diospongin A and B in good yields.
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Affiliation(s)
- Yada Bharath
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
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9
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Mallampudi NA, Srinivas B, Reddy JG, Mohapatra DK. Total Synthesis and Structural Revision of Monocillin VII. Org Lett 2019; 21:5952-5956. [DOI: 10.1021/acs.orglett.9b02075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Srinivas B, Reddy DS, Mallampudi NA, Mohapatra DK. A General Diastereoselective Strategy for Both cis- and trans-2,6-Disubstituted Tetrahydropyrans: Formal Total Synthesis of (+)-Muconin. Org Lett 2018; 20:6910-6914. [PMID: 30354147 DOI: 10.1021/acs.orglett.8b03053] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A protocol for general diastereoselective tandem dihydroxylation followed by SN2 cyclization was developed for the convenient and efficient synthesis of cis- and trans-2,6-disubstituted tetrahydropyrans from ζ-mesyloxy α,β-unsaturated esters. The application of this novel method was demonstrated through the concise formal synthesis of (+)-muconin, a nonclassical acetogenin, with sequential THP-THF ring formation.
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Affiliation(s)
- Beduru Srinivas
- Organic Synthesis and Process Chemistry Division , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007 , India
| | - D Srinivas Reddy
- Organic Synthesis and Process Chemistry Division , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007 , India
| | - N Arjunreddy Mallampudi
- Organic Synthesis and Process Chemistry Division , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007 , India
| | - Debendra K Mohapatra
- Organic Synthesis and Process Chemistry Division , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500 007 , India
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Affiliation(s)
- Claude Bauder
- Laboratoire de Synthèse Organométallique et Catalyse (SOCAT); Institut de Chimie; UMR 7177 CNRS; Université de Strasbourg; 4 rue Blaise Pascal 67070 Strasbourg France
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12
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Affiliation(s)
- You Yang
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Biao Yu
- State
Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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Mallampudi NA, Reddy GS, Maity S, Mohapatra DK. Gold(I)-Catalyzed Cyclization for the Synthesis of 8-Hydroxy-3- substituted Isocoumarins: Total Synthesis of Exserolide F. Org Lett 2017; 19:2074-2077. [DOI: 10.1021/acs.orglett.7b00673] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- N. Arjunreddy Mallampudi
- Natural Products Chemistry
Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - G. Sudhakar Reddy
- Natural Products Chemistry
Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Saurabh Maity
- Natural Products Chemistry
Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Debendra K. Mohapatra
- Natural Products Chemistry
Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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Padhi B, Reddy GS, Mohapatra DK. Total Synthesis of Tetraketide and Cryptorigidifoliol I via a Sequential Allylation Strategy. JOURNAL OF NATURAL PRODUCTS 2016; 79:2788-2796. [PMID: 27933895 DOI: 10.1021/acs.jnatprod.6b00443] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A unified and efficient synthetic route for both tetraketide (1) and cryptorigidifoliol I (2) has been devised successfully from commercially available starting materials in 11 and 17 steps, with 16% and 11% overall yields, respectively. Highlights of the syntheses involved sequential Lewis acid-catalyzed highly regio- and diastereoselective allylations and intramolecular Mitsunobu lactonization.
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Affiliation(s)
- Birakishore Padhi
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500 007, India
- Academy of Scientific and Innovative Research , New Delhi 110025, India
| | - G Sudhakar Reddy
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500 007, India
- Academy of Scientific and Innovative Research , New Delhi 110025, India
| | - Debendra K Mohapatra
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500 007, India
- Academy of Scientific and Innovative Research , New Delhi 110025, India
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Chen X, Wang Q, Yu B. Gold(i)-catalyzed C-glycosylation of glycosyl ortho-alkynylbenzoates: the role of the moisture sequestered by molecular sieves. Chem Commun (Camb) 2016; 52:12183-12186. [DOI: 10.1039/c6cc07218f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C-Glycosylation of glycosyl ortho-hexynylbenzoates with allyltrimethylsilane or silyl enol ethers could proceed smoothly under the catalysis of Ph3PAuNTf2, wherein the moisture sequestered by the molecular sieves ensured the gold(i)-catalytic cycle.
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Affiliation(s)
- Xiaoping Chen
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Qiaoling Wang
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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Thirupathi B, Mohapatra DK. Gold-catalyzed Hosomi–Sakurai type reaction for the total synthesis of herboxidiene. Org Biomol Chem 2016; 14:6212-24. [DOI: 10.1039/c6ob00321d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The total synthesis of herboxidiene has been accomplished in the 22 longest linear sequences, starting from commercially available 2-butyne-1,4-diol following Jørgensen's asymmetric epoxidation, gold-catalyzed stereoselective allylation of lactols, Evans alkylation, Stille coupling, vanadyl-oxo epoxidation as key steps.
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Affiliation(s)
- Barla Thirupathi
- Natural Products Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Debendra K. Mohapatra
- Natural Products Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
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