1
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Silyanova EA, Samet AV, Semenov VV. A Two-Step Approach to a Hexacyclic Lamellarin Core via 1,3-Dipolar Cycloaddition of Isoquinolinium Ylides to Nitrostilbenes. J Org Chem 2022; 87:6444-6453. [PMID: 35467869 DOI: 10.1021/acs.joc.2c00312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 1,3-dipolar cycloaddition reaction of isoquinolinium ylides to nitrostilbenes provides an approach to 1,2-diarylpyrrolo[2,1-a]isoquinolinium-3-carboxylates and then to a complete hexacyclic lamellarin core.
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Affiliation(s)
- E A Silyanova
- N. D. Zelinsky Institute of Organic Chemistry RAS, 47 Leninsky Prospect, 119991 Moscow, Russian Federation
| | - A V Samet
- N. D. Zelinsky Institute of Organic Chemistry RAS, 47 Leninsky Prospect, 119991 Moscow, Russian Federation
| | - V V Semenov
- N. D. Zelinsky Institute of Organic Chemistry RAS, 47 Leninsky Prospect, 119991 Moscow, Russian Federation
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2
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Jhang J, Manjappa KB, Yang D. Synthesis of Naphthoquinone‐ and Pyrrolo[2,1‐
a
]isoquinoline‐Fused Heterocycles and Tridemethoxy Lamellarin D. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100660] [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)
- Jia‐Wei Jhang
- Department of Chemistry Tunghai University No. 1727, Sec. 4, Taiwan Boulevard, Xitun District Taichung Taiwan
| | - Kiran B. Manjappa
- Graduate Program for Biomedical and Materials Science Tunghai University No. 1727, Sec. 4, Taiwan Boulevard, Xitun District Taichung Taiwan
| | - Ding‐Yah Yang
- Department of Chemistry Tunghai University No. 1727, Sec. 4, Taiwan Boulevard, Xitun District Taichung Taiwan
- Graduate Program for Biomedical and Materials Science Tunghai University No. 1727, Sec. 4, Taiwan Boulevard, Xitun District Taichung Taiwan
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3
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Astakhov GS, Shigaev RR, Borisova TN, Ershova AA, Titov AA, Varlamov AV, Voskressensky LG, Matveeva MD. Facile synthesis of pyrrolo[2,1-a]isoquinolines by domino reaction of 1-aroyl-3,4-dihydroisoquinolines with conjugated ketones, nitroalkenes and nitriles. Mol Divers 2021; 25:2441-2446. [PMID: 33040250 DOI: 10.1007/s11030-020-10146-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 09/26/2020] [Indexed: 12/01/2022]
Abstract
A convenient protocol for the synthesis of 5,6-dihydropyrrolo[2,1-a]isoquinolines with various electron-withdrawing substituents at C-2 atom is described. This approach is based on the two-component domino reaction of 1-aroyl-3,4-dihydroisoquinolines with α,β-unsaturated ketones, nitroalkenes and acrylonitrile. Depending on the selected substrates, the reaction was performed in TFE under reflux or under microwave irradiation. Only for the two examples, a transition metal catalyst was used.
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Affiliation(s)
- Grigorii S Astakhov
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
- Laboratory of Metal Hydrides (MHLab), A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences, Vavilov St. 28, GSP-1, B-334, Moscow, Russia, 119991
| | - Rinat R Shigaev
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Tatiana N Borisova
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Anastasia A Ershova
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Alexander A Titov
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Alexey V Varlamov
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Leonid G Voskressensky
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Maria D Matveeva
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198.
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4
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Diastereoselective Synthesis of Polysubstituted Pyrrolidines/Dihydropyrroles: Photochemical Properties of Polysubstituted Pyrroles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Seipp K, Geske L, Opatz T. Marine Pyrrole Alkaloids. Mar Drugs 2021; 19:514. [PMID: 34564176 PMCID: PMC8471394 DOI: 10.3390/md19090514] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/05/2021] [Accepted: 09/07/2021] [Indexed: 12/13/2022] Open
Abstract
Nitrogen heterocycles are essential parts of the chemical machinery of life and often reveal intriguing structures. They are not only widespread in terrestrial habitats but can also frequently be found as natural products in the marine environment. This review highlights the important class of marine pyrrole alkaloids, well-known for their diverse biological activities. A broad overview of the marine pyrrole alkaloids with a focus on their isolation, biological activities, chemical synthesis, and derivatization covering the decade from 2010 to 2020 is provided. With relevant structural subclasses categorized, this review shall provide a clear and timely synopsis of this area.
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Affiliation(s)
| | | | - Till Opatz
- Department of Chemistry, Organic Chemistry Section, Johannes Gutenberg University, Duesbergweg 10–14, 55128 Mainz, Germany; (K.S.); (L.G.)
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6
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The first example of cine-substitution for 3-nitrocoumarins. Effective approach to the synthesis of 2H-chromen-2-ones containing 3-hydroxypyran-4-one fragment. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152939] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Chithanna S, Yang DY. Construction of 2-pyridones via oxidative cyclization of enamides: access to Pechmann dye derivatives. Org Biomol Chem 2021; 19:1565-1574. [PMID: 33508055 DOI: 10.1039/d0ob02376k] [Citation(s) in RCA: 3] [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 protocol for the construction of structurally diverse 2-pyridone derivatives from imines and α,β-unsaturated acid chlorides in a single operation is reported. The target compounds, including coumarin-8-oxoprotoberbine analogues and lamellarin G isomers, were prepared via thermal cyclization of the in situ generated enamides followed by thermal dehydrogenation. The cyclization of enamides was achieved by the introduction of an electron-withdrawing group on the α-carbon of acid chlorides. This methodology allows quick access to polycyclic Pechmann dyes via rare double oxidative cyclizations of dienamides under mild conditions.
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Affiliation(s)
- Sivanna Chithanna
- Department of Chemistry, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung 407224, Taiwan.
| | - Ding-Yah Yang
- Department of Chemistry, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung 407224, Taiwan. and Graduate Program for Biomedical and Materials Science, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung 407224, Taiwan
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8
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Chithanna S, Yang DY. Photocyclization of coumarinoyl enamides revisited: [2+2+2] cycloreversion/cycloaddition mechanism. NEW J CHEM 2021. [DOI: 10.1039/d1nj00352f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The major and minor products for the photocyclization of coumarinoyl enamides were identified.
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Affiliation(s)
- Sivanna Chithanna
- Department of Chemistry
- Tunghai University
- 407224 Taiwan
- Republic of China
| | - Ding-Yah Yang
- Department of Chemistry
- Tunghai University
- 407224 Taiwan
- Republic of China
- Graduate Program for Biomedical and Materials Science
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9
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Xu YW, Wang J, Wang G, Zhen L. Diethyl Azodicarboxylate-Promoted Oxidative [3 + 2] Cycloaddition for the Synthesis of Pyrrolo[2,1-a]isoquinolines. J Org Chem 2020; 86:91-102. [DOI: 10.1021/acs.joc.0c01567] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ya-Wen Xu
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
| | - Jiankun Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
| | - Guangji Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
| | - Le Zhen
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, Jiangsu, China
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10
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Vyasamudri S, Yang DY. Regiodivergent Synthesis of Bis(4-oxycoumarin)-based Dioxabicycles: Exploration of [4 + 4] (Heterocyclo)reversion/addition and 1,5-Hydrogen Shift Photochromism. Org Lett 2020; 22:3166-3170. [PMID: 32253913 DOI: 10.1021/acs.orglett.0c00904] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two isomeric dioxabicyclic molecular skeletons were constructed by employing the concepts of divergent synthesis. A base-mediated and an acid-catalyzed pseudo-three-component reaction of two equivalents of 4-hydroxycoumarin and (Z)-3-chloro-3-phenylacrylaldehyde yielded the corresponding bis(4-oxycoumarin)-based 2,6- and 2,8-dioxabicycles, respectively. The prepared colorless 2,6-dioxabicycles turned red upon UV irradiation and underwent the reverse reaction when exposed to visible light. The photochromism was proposed to proceed via a sequential [4 + 4] (heterocyclo)addition/reversion and 1,5-hydrogen shift on the basis of photogenerated product-trapping experiments.
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Affiliation(s)
- Sameer Vyasamudri
- Department of Chemistry, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung City 40704, Taiwan, Republic of China
| | - Ding-Yah Yang
- Department of Chemistry, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung City 40704, Taiwan, Republic of China
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11
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Silyanova EA, Samet AV, Salamandra LK, Khrustalev VN, Semenov VV. Formation of 3,4-Diarylpyrrole- and Pyrrolocoumarin Core of Natural Marine Products via Barton-Zard Reaction and Selective O-Demethylation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000099] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Eugenia A. Silyanova
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
| | - Alexander V. Samet
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
| | - Lev K. Salamandra
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
| | - Victor N. Khrustalev
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
- Peoples' Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya Street 117198 Moscow Russian Federation
| | - Victor V. Semenov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
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12
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Lamellarin alkaloids: Isolation, synthesis, and biological activity. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2020; 83:1-112. [PMID: 32098648 DOI: 10.1016/bs.alkal.2019.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Lamellarins are marine alkaloids containing fused 14-phenyl-6H-[1]benzopyrano[4',3':4,5]pyrrolo[2,1-a]isoquinoline or non-fused 3,4-diarylpyrrole-2-carboxylate ring systems. To date, more than 50 lamellarins have been isolated from a variety of marine organisms, such as mollusks, tunicates, and sponges. Many of them, especially fused type I lamellarins, exhibit impressive biological activity, such as potent cytotoxicity, topoisomerase I inhibition, protein kinases inhibition, and anti-HIV-1 activity. Due to their useful biological activity and limited availability from natural sources, a number of synthetic methods have been developed. In this chapter, we present an updated and comprehensive review on lamellarin alkaloids summarizing their isolation, synthesis, and biological activity.
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13
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Vyasamudri S, Yang DY. Light/inductive effect induced isomerization of chromeno-5-methyl-2,6,9-trioxabicyclo[3.3.1]nonadienes. NEW J CHEM 2020. [DOI: 10.1039/d0nj02288h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An efficient rearrangement of coumarin-based trioxabicycles and the effect of UV light and electron-withdrawing substituents on this transformation are reported.
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Affiliation(s)
| | - Ding-Yah Yang
- Department of Chemistry
- Tunghai University
- Taiwan
- Graduate Program for Biomedical and Materials Science
- Tunghai University
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14
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Klintworth R, de Koning CB, Michael JP. Demethylative Lactonization Provides a Shortcut to High-Yielding Syntheses of Lamellarins. J Org Chem 2019; 85:1054-1061. [PMID: 31840515 DOI: 10.1021/acs.joc.9b02983] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Modular gram-scale syntheses of the trimethyl ethers of lamellarins G (6) and D (7) were achieved from readily accessible precursors in the highest overall yields reported to date (6, six steps, 82%; 7, seven steps, 86%). A novel demethylative lactonization between an aryl methyl ether and a neighboring carboxylic acid was developed for creating the chromenone unit of the targets to avoid the need for additional protection and deprotection steps. The central pyrrole core was constructed in a late-stage [4 + 1] condensation between ethyl bromoacetate and an enaminone possessing the remaining components of the lamellarin skeleton. Exhaustive demethylation of both permethyl ethers 6 and 7 gave the polyphenolic natural lamellarins A4 (3) and H (5), respectively.
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Affiliation(s)
- Robin Klintworth
- Molecular Sciences Institute, School of Chemistry , University of the Witwatersrand , Wits 2050 , Johannesburg , South Africa
| | - Charles B de Koning
- Molecular Sciences Institute, School of Chemistry , University of the Witwatersrand , Wits 2050 , Johannesburg , South Africa
| | - Joseph P Michael
- Molecular Sciences Institute, School of Chemistry , University of the Witwatersrand , Wits 2050 , Johannesburg , South Africa
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15
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Ghosh A, Kolle S, Barak DS, Kant R, Batra S. Multicomponent Reaction for the Synthesis of 5,6-Dihydropyrrolo[2,1- a]isoquinolines. ACS OMEGA 2019; 4:20854-20867. [PMID: 31858071 PMCID: PMC6906948 DOI: 10.1021/acsomega.9b03546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 11/13/2019] [Indexed: 05/08/2023]
Abstract
A multicomponent reaction between isatin, tetrahydroisoquinoline, and terminal alkyne in the presence of benzoic acid for the synthesis of N-(substituted-2-(2-phenyl-5,6-dihydropyrrolo[2,1-a]isoquinolin-3-yl)phenyl)-3,4-dihydroisoquinoline-2(1H)-carboxamides is described. This three-component reaction proceeds via sequential formation of spirooxindole, generation of isocyanate functionality via cleavage of the C2-C3 bond in the isatin subunit of spirooxindole, and addition of the second molecule of tetrahydroisoquinoline to the isocyanate group to offer title compounds. Expansion of the protocol to four-component by including an additional primary amine affords 1-substituted-3-(2-(2-phenyl-5,6-dihydropyrrolo[2,1-a]isoquinolin-3-yl)phenyl)urea in low to moderate yields. However, the reaction of intermediate spirooxindole with tetrahydroisoquinoline or any primary or secondary amine produced the title compound in excellent yields.
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Affiliation(s)
- Aritra Ghosh
- Medicinal
and Process Chemistry Division and Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road, Lucknow 226031, India
- Academy
of Scientific and Innovative Research, CSIR-
Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201002, India
| | - Shivalinga Kolle
- Medicinal
and Process Chemistry Division and Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road, Lucknow 226031, India
| | - Dinesh S. Barak
- Medicinal
and Process Chemistry Division and Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road, Lucknow 226031, India
| | - Ruchir Kant
- Medicinal
and Process Chemistry Division and Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road, Lucknow 226031, India
| | - Sanjay Batra
- Medicinal
and Process Chemistry Division and Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road, Lucknow 226031, India
- Academy
of Scientific and Innovative Research, CSIR-
Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh 201002, India
- E-mail: ; . Tel. +91-522-2772450 xtn 4727
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16
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Klintworth R, de Koning CB, Opatz T, Michael JP. A Xylochemically Inspired Synthesis of Lamellarin G Trimethyl Ether via an Enaminone Intermediate. J Org Chem 2019; 84:11025-11031. [DOI: 10.1021/acs.joc.9b01604] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Robin Klintworth
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, PO Wits 2050, South Africa
| | - Charles B. de Koning
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, PO Wits 2050, South Africa
| | - Till Opatz
- Institut für Organische Chemie, Johannes Gutenberg-University, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Joseph P. Michael
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, PO Wits 2050, South Africa
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17
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Vyasamudri S, Yang DY. Base-Dependent Divergent Annulation of 4-Chloro-3-formylcoumarin and Tetrahydroisoquinoline: Application to the Synthesis of Isolamellarins and Hydroxypyrrolones. J Org Chem 2019; 84:3662-3670. [DOI: 10.1021/acs.joc.8b03259] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sameer Vyasamudri
- Department of Chemistry, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung 40704, Taiwan
| | - Ding-Yah Yang
- Department of Chemistry, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung 40704, Taiwan
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18
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Mandrekar KS, Kadam HK, Tilve SG. Domino Bischler-Napieralski - Michael Reaction and Oxidation - New Route to Coumarin-Pyrrole-Isoquinoline Fused Pentacycles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801244] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ketan S. Mandrekar
- Department of Chemistry; Goa University; 403206 Taleigao Plateau Goa India
| | - Hari K. Kadam
- Department of Chemistry; Goa University; 403206 Taleigao Plateau Goa India
| | - Santosh G. Tilve
- Department of Chemistry; Goa University; 403206 Taleigao Plateau Goa India
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19
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Colligs VC, Dialer C, Opatz T. Synthesis of Lamellarin G Trimethyl Ether by von Miller-Plöchl-Type Cyclocondensation. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800611] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Vanessa C. Colligs
- Institute of Organic Chemistry; University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Clemens Dialer
- Institute of Organic Chemistry; University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Till Opatz
- Institute of Organic Chemistry; University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
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