1
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Dake GG, Kaliappan KP. Total Syntheses of Discoipyrroles A, B, and C, Three Marine Natural Products. J Org Chem 2024; 89:5825-5832. [PMID: 38597506 DOI: 10.1021/acs.joc.4c00462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Herein, we describe our efforts culminating in the total syntheses of discoipyrroles A, B, and C in 6, 6, and 7 steps respectively with excellent overall yield. Total syntheses of these unique natural products have been accomplished involving microwave-mediated Paal-Knorr pyrrole synthesis, Pd-catalyzed carbonylative transformation, and MoOPH (Vedejs reagent) oxidation as key reactions to construct the 1,2,3,5-tetrasubstituted pyrrole and oxidative cyclization of highly substituted pyrrole as key steps.
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Affiliation(s)
- Gaurav G Dake
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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2
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Keerthana MS, Jeganmohan M. Synthesis of conjugated dienes via palladium-catalysed aerobic dehydrogenation of unsaturated acids and amides. Chem Commun (Camb) 2022; 58:8814-8817. [PMID: 35843120 DOI: 10.1039/d2cc02896d] [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
A Pd(II)-catalyzed direct aerobic dehydrogenation of γ,δ-olefinic acids and amides has been demonstrated. The present protocol dehydrogenates the least acidic amides and acids, thus replacing the traditional enolate strategy for dehydrogenation. A broad spectrum of conjugated dienamides and dienoic acids were produced in good to excellent yields. A possible reaction mechanism was proposed and supported by deuterium labelling studies.
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Affiliation(s)
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
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3
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Bou Zeid S, Eid S, Najjar F, Macé A, Rivilla I, Cossío FP, Dorcet V, Roisnel T, Carreaux F. Microwave‐Assisted 1,3‐Dioxa‐[3,3]‐Sigmatropic Rearrangement of Substituted Allylic Carbamates: Application to the Synthesis of Novel 1,3‐Oxazine‐2,4‐dione Derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Samar Bou Zeid
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Samar Eid
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Fadia Najjar
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Aurélie Macé
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Ivan Rivilla
- Departamento de Química Orgánica I Centro de Innovación en Química Avanzada (ORFEO-CINQA) Facultad de Química Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
- Ikerbasque Basque Fundation for Science 48009 Bilbao Spain
| | - Fernando P. Cossío
- Departamento de Química Orgánica I Centro de Innovación en Química Avanzada (ORFEO-CINQA) Facultad de Química Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
| | - Vincent Dorcet
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - François Carreaux
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
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4
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Bhangare DN, Mahale VB, Shinde RG, Nikalje MD, Duthade SD, Lokhande MN. Synthesis of the Neurokinin 1 Receptor Antagonist (+)-L-733,060 by Jacobsen’s Hydrolytic Kinetic Resolution. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428020120180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Vaithegi K, Pawar AB, Prasad KR. Synthesis of the macrolactone core of the revised structure of palmerolide C. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Sayyad AA, Kaim K, Kaliappan KP. Synthetic studies on palmerolide C: synthesis of an advanced intermediate towards the revised structure of palmerolide C. Org Biomol Chem 2020; 18:5937-5950. [PMID: 32692326 DOI: 10.1039/d0ob01140a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
A stereoselective synthesis of the highly advanced intermediates towards the revised structure of palmerolide C and 10-epi-palmerolide C is described in this paper. The required key fragments C1-C6, C7-C14 and C15-C23 have been successfully assembled in a convergent manner to access the C1-C23 framework bearing all the five stereocenters present in the natural product. The synthesis involves the Julia-Kocienski reaction, Yamaguchi esterification, Takai olefination and regioselective epoxide opening as key steps. The proposed route is flexible and could also be applied to the synthesis of structurally related palmerolides.
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Affiliation(s)
- Ashik A Sayyad
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400 076, India.
| | - Khushboo Kaim
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400 076, India.
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400 076, India.
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7
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Bandaru A, Kaliappan KP. Synthesis of the C
1
‐C
10
Fragment of Muamvatin. Chem Asian J 2020; 15:2208-2211. [DOI: 10.1002/asia.202000459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/20/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Anandaraju Bandaru
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Krishna P. Kaliappan
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
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8
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Bandaru A, Si D, Kaliappan KP. Synthesis of C
1
−C
9
and C
10
−C
21
Fragments of (−)‐Dolabriferol. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anandaraju Bandaru
- Department of ChemistryIndian Institute of Technology Bombay Powai, Mumbai 400076 India
| | - Debjani Si
- Department of ChemistryIndian Institute of Technology Bombay Powai, Mumbai 400076 India
| | - Krishna P. Kaliappan
- Department of ChemistryIndian Institute of Technology Bombay Powai, Mumbai 400076 India
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9
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Affiliation(s)
- Debjani Si
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Krishna P. Kaliappan
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
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10
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Indu S, Kaliappan KP. Synthetic approaches towards cortistatins: evolution and progress through its ages. Org Biomol Chem 2020; 18:3965-3995. [PMID: 32420567 DOI: 10.1039/d0ob00770f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cortistatins are a family of steroidal alkaloids with a unique pentacyclic skeleton, having immensely potent anti-angiogenetic activities. Given the scarcity in the natural availability of these compounds, their syntheses became major attractions in organic chemistry. Along with total synthesis of the most potent congeners in the family: cortistatins A and J, the synthesis of two other members have been successfully completed, while various other analogues have also been designed with variable degrees of biological activities. This review is an exhaustive coverage of the significant attempts towards constructing this highly challenging molecule and also aims to highlight the deep understanding of the structure-activity relationships of these compounds, which have been garnered over time.
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Affiliation(s)
- Satrajit Indu
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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11
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Indu S, Telore RD, Kaliappan KP. Construction of key building blocks towards the synthesis of cortistatins. Org Biomol Chem 2020; 18:2432-2446. [PMID: 32163085 DOI: 10.1039/d0ob00170h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This work reports the construction of key building blocks towards the synthesis of cortistatins; a family of steroidal alkaloids. Cortistatin A, being a primary target due to its superior biological properties over other congeners, has been prepared by two different synthetic routes. Synthesis of the precursor to the heavily substituted A-ring starting from d-glucose and construction of the DE-ring junction employing a Hajos-Parrish ketone as a chiral pool have been demonstrated. Efforts are underway to assemble these key fragments and build towards the total synthesis of cortistatin A.
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Affiliation(s)
- Satrajit Indu
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Rahul D Telore
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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12
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Jessen BM, Ondozabal JM, Pedersen CM, Sølvhøj A, Taarning E, Madsen R. Palladium(0)‐Catalyzed Rearrangement of Allylic Esters. ChemistrySelect 2020. [DOI: 10.1002/slct.202000655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Bo M. Jessen
- Department of Chemistry Technical University of Denmark 2800 Kgs. Lyngby Denmark
| | - Jun Miyatake Ondozabal
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | | | - Amanda Sølvhøj
- Haldor Topsøe A/S Haldor Topsøes Allé 1 2800 Kgs. Lyngby Denmark
| | - Esben Taarning
- Haldor Topsøe A/S Haldor Topsøes Allé 1 2800 Kgs. Lyngby Denmark
| | - Robert Madsen
- Department of Chemistry Technical University of Denmark 2800 Kgs. Lyngby Denmark
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13
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Sayyad AA, Kaliappan KP. Sequential Enyne-Metathesis/Diels-Alder Strategy: Rapid Access to Sugar-Oxasteroid-Quinone Hybrids. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700599] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Ashik A. Sayyad
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai India
| | - Krishna P. Kaliappan
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai India
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14
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Ramya PVS, Angapelly S, Babu BN, Digwal CS, Nagarsenkar A, Gannoju S, Prasanth B, Arifuddin M, Kanneboina K, Rangan K, Kamal A. Metal-Free C−C Bond Cleavage: One-Pot Access to 1,4-Benzoquinone-linked N
-Formyl Amides/Sulfonamides/Carbamates using Oxone. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700266] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- P. V. Sri Ramya
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - Srinivas Angapelly
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - Bathini Nagendra Babu
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - Chander Singh Digwal
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - Atulya Nagarsenkar
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - Srinivasulu Gannoju
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - B. Prasanth
- Department of Pharmaceutical Analysis; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - Mohammed Arifuddin
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
| | - Kumar Kanneboina
- Department of Chemistry; Birla Institute of Technology and Science (BITS); Hyderabad- 500078 India
| | - Krishnan Rangan
- Department of Chemistry; Birla Institute of Technology and Science (BITS); Hyderabad- 500078 India
| | - Ahmed Kamal
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER); Hyderabad- 500037 India
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15
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Secondary Metabolites from Polar Organisms. Mar Drugs 2017; 15:md15030028. [PMID: 28241505 PMCID: PMC5367009 DOI: 10.3390/md15030028] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 01/24/2017] [Accepted: 01/29/2017] [Indexed: 01/11/2023] Open
Abstract
Polar organisms have been found to develop unique defences against the extreme environment environment, leading to the biosynthesis of novel molecules with diverse bioactivities. This review covers the 219 novel natural products described since 2001, from the Arctic and the Antarctic microoganisms, lichen, moss and marine faunas. The structures of the new compounds and details of the source organism, along with any relevant biological activities are presented. Where reported, synthetic and biosynthetic studies on the polar metabolites have also been included.
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16
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Wu YD, Lai Y, Dai WM. Synthesis of Two Diastereomeric C1-C7 Acid Fragments of Amphidinolactone B UsingB-Alkyl Suzuki-Miyaura Cross-Coupling as the Modular Assembly Step. ChemistrySelect 2016. [DOI: 10.1002/slct.201600315] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yan-Dong Wu
- Laboratory of Advanced Catalysis and Synthesis; Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR P.R. China
- College of Chemistry; Central China Normal University; Luoyu Road 152, Hongshan District Wuhan 430079 Hubei P.R. China
| | - Yecai Lai
- Laboratory of Advanced Catalysis and Synthesis; Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR P.R. China
| | - Wei-Min Dai
- Laboratory of Advanced Catalysis and Synthesis; Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR P.R. China
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17
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Zhang JJ, You L, Wang YF, Li YH, Liang XT, Zhang B, Yang SL, Su Q, Chen JH, Yang Z. Asymmetric Total Synthesis of Propindilactone G, Part 2: Enantioselective Construction of the Fully Functionalized BCDE Ring System. Chem Asian J 2016; 11:1414-24. [DOI: 10.1002/asia.201600130] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Jia-Jun Zhang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Lin You
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Yue-Fan Wang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Yuan-He Li
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Xin-Ting Liang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Bo Zhang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Shou-Liang Yang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Qi Su
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Jia-Hua Chen
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Zhen Yang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology, Shenzhen Graduate School; Peking University; Shenzhen 518055 P. R. China
- Key Laboratory of Marine Drugs, Chinese Ministry of Education; School of Medicine and Pharmacy; Ocean University of China; 5 Yushan Road Qingdao P. R. China
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18
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Sambaiah M, Gudipati R, Shiva Kumar K, Yennam S, Behera M. An efficient method for the preparation of N-formyl-imide via amidine using propylphosphonic anhydride (T3P®). Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Joseph J, Preethalayam P, Radhakrishnan KV, Jaroschik F, Vasse JL. Titanium and Zirconium Hydride-Catalyzed Regioselective Isomerization of 1,4-Dihydrofulvenes: Access to 1-Substituted 1,2-Dihydrofulvenes. Org Lett 2015; 17:6202-5. [DOI: 10.1021/acs.orglett.5b03195] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jomy Joseph
- Institut de Chimie Moléculaire de Reims, CNRS
(UMR 7312), Université de Reims, 51687 Cedex 2 Reims, France
| | - Preethanuj Preethalayam
- National Institute for Interdisciplinary Science and Technology, CSIR-NIIST, Industrial
Estate P.O., Trivandrum 19, Kerala, India
| | - K. V. Radhakrishnan
- National Institute for Interdisciplinary Science and Technology, CSIR-NIIST, Industrial
Estate P.O., Trivandrum 19, Kerala, India
| | - Florian Jaroschik
- Institut de Chimie Moléculaire de Reims, CNRS
(UMR 7312), Université de Reims, 51687 Cedex 2 Reims, France
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire de Reims, CNRS
(UMR 7312), Université de Reims, 51687 Cedex 2 Reims, France
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20
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21
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Ramakrishna K, Kaliappan KP. An enantioselective total synthesis of Sch-725674. Org Biomol Chem 2015; 13:234-40. [DOI: 10.1039/c4ob02136c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective total synthesis of Sch-725674 using dithiane alkylation, cross metathesis reaction, Yamaguchi macrolactonization and a substrate controlled stereoselective reduction as key steps is described.
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Affiliation(s)
- Kota Ramakrishna
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
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22
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Liu C, Gu Y. Synthesis of Densely Substituted 1,3-Butadienes through Acid-Catalyzed Alkenylations of α-Oxoketene Dithioacetals with Aldehydes. J Org Chem 2014; 79:9619-27. [DOI: 10.1021/jo5017234] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Changhui Liu
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
| | - Yanlong Gu
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Lanzhou 730000, People’s Republic of China
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23
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A synthetic approach to palmerolides via Negishi cross coupling. The challenge of the C15–C16 bond formation. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Affiliation(s)
- Jiayun He
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Jesse Ling
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Pauline Chiu
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
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25
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26
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Gigant N, Bäckvall JE. Synthesis of Conjugated Dienes via a Biomimetic Aerobic Oxidative Coupling of Two CvinylH Bonds. Chemistry 2013; 19:10799-803. [DOI: 10.1002/chem.201301771] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Indexed: 11/08/2022]
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27
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Jena BK, Mohapatra DK. Synthesis of the C1–C15 fragment of palmerolide A via protecting group dependent RCM reaction. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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29
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Lisboa MP, Jones DM, Dudley GB. Formal Synthesis of Palmerolide A, Featuring Alkynogenic Fragmentation and syn-Selective Vinylogous Aldol Chemistry. Org Lett 2013; 15:886-9. [DOI: 10.1021/ol400014e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Marilda P. Lisboa
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - David M. Jones
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Gregory B. Dudley
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
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Robiette R, Pospíšil J. On the Origin ofE/ZSelectivity in the Modified Julia Olefination - Importance of the Elimination Step. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201634] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Pawar AB, Prasad KR. Formal Total Synthesis of Palmerolide A. Chemistry 2012; 18:15202-6. [DOI: 10.1002/chem.201202324] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Indexed: 11/07/2022]
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Florence GJ, Wlochal J. Synthesis of the Originally Proposed Structure of Palmerolide C. Chemistry 2012; 18:14250-4. [DOI: 10.1002/chem.201203067] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Indexed: 01/23/2023]
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2010. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Pujari SA, Kaliappan KP. An iterative Shimizu non-aldol approach for the stereoselective synthesis of C13-C22 fragment of callystatin A. Org Biomol Chem 2012; 10:1750-3. [DOI: 10.1039/c2ob06838a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang P, Liu CR, Sun XL, Chen SS, Li JF, Xie Z, Tang Y. A newly-designed PE-supported arsine for efficient and practical catalytic Wittig olefination. Chem Commun (Camb) 2012; 48:290-2. [DOI: 10.1039/c1cc16747b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pujari SA, Gowrisankar P, Kaliappan KP. A Shimizu Non-Aldol Approach to the Formal Total Synthesis of Palmerolide A. Chem Asian J 2011; 6:3137-51. [DOI: 10.1002/asia.201100429] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Indexed: 11/07/2022]
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Si D, Sekar NM, Kaliappan KP. A flexible and unified strategy for syntheses of cladospolides A, B, C, and iso-cladospolide B. Org Biomol Chem 2011; 9:6988-97. [PMID: 21850340 DOI: 10.1039/c1ob05787a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple, efficient and flexible strategy for the syntheses of cladospolides A-C and iso-cladospolide B is reported here. This strategy involves Julia-Kocienski olefination and Yamaguchi macrolactonization as key steps, starting from either d-ribose or suitable tartaric acid esters. Although our initial efforts towards cladospolide A involving a ring closing metathetic approach were not successful, changing the mode of ring closure and the use of Julia-Kocienski olefination for the construction of the key intermediate solved this issue and paved the way for the completion of total syntheses of this class of natural products.
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Affiliation(s)
- Debjani Si
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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Affiliation(s)
- Kavirayani R. Prasad
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - Amit B. Pawar
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
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Conference Report: ESF-COST High-Level Research Conference Natural Products Chemistry, Biology and Medicine III. Future Med Chem 2011; 2:1797-803. [PMID: 21428802 DOI: 10.4155/fmc.10.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Natural Products Chemistry, Biology and Medicine III was the third conference in a series of events sponsored by the European Science Foundation (ESF) and the European Cooperation in the field of Scientific and Technical Research (COST). Scientists came together from within and outside the EU to present cutting-edge developments in chemical synthesis. Research areas included the synthesis of natural products, methods development, isolation/structural elucidation and chemical biology. As our capacity to produce new chemotherapeutic agents relies on chemical synthesis, this year's conference has never been so timely. This report highlights several of the scientific contributions presented during the meeting.
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Silva, Jr. LF, Olofsson B. Hypervalent iodine reagents in the total synthesis of natural products. Nat Prod Rep 2011; 28:1722-54. [DOI: 10.1039/c1np00028d] [Citation(s) in RCA: 247] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Palanichamy K, Subrahmanyam AV, Kaliappan KP. A radical cyclization approach to the formal total syntheses of platencin. Org Biomol Chem 2011; 9:7877-86. [DOI: 10.1039/c1ob06155k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ravu VR, Leung GYC, Lim CS, Ng SY, Sum RJ, Chen DYK. Chemical Synthesis and Biological Evaluation of Second-Generation Palmerolide A Analogues. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001562] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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