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Otsuka K, Miyahara M, Takaki S, Wakabayashi R, Miyako K, Irie R, Takamizawa S, Sakai R, Oikawa M. Synthetic Studies on the Initially Proposed Structure of Protoaculeine B: Discovery of Neuronally Active Heterotricyclic Amino Acids. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kazunori Otsuka
- Yokohama City University College of Science: Yokohama Shiritsu Daigaku Rigakubu Graduate School of Nanobioscience JAPAN
| | - Masayoshi Miyahara
- Yokohama City University College of Science: Yokohama Shiritsu Daigaku Rigakubu Graduate School of Nanobioscience JAPAN
| | - Sara Takaki
- Yokohama City University College of Science: Yokohama Shiritsu Daigaku Rigakubu Graduate School of Nanobioscience JAPAN
| | - Ryoya Wakabayashi
- Yokohama City University College of Science: Yokohama Shiritsu Daigaku Rigakubu Graduate School of Nanobioscience JAPAN
| | - Kei Miyako
- Hokkaido University Faculty of Fisheries Sciences Graduate School of Fisheries Sciences School of Fisheries Sciences: Hokkaido Daigaku Daigakuin Suisan Kagaku Kenkyuin Daigakuin Suisan Kagakuin Suisan Gakubu Faculty of Fisheries Sciences JAPAN
| | - Raku Irie
- Yokohama City University College of Science: Yokohama Shiritsu Daigaku Rigakubu Graduate School of Nanobioscience JAPAN
| | - Satoshi Takamizawa
- Yokohama City University College of Science: Yokohama Shiritsu Daigaku Rigakubu Graduate School of Nanobioscience JAPAN
| | - Ryuichi Sakai
- Hokkaido University Faculty of Fisheries Sciences Graduate School of Fisheries Sciences School of Fisheries Sciences: Hokkaido Daigaku Daigakuin Suisan Kagaku Kenkyuin Daigakuin Suisan Kagakuin Suisan Gakubu Faculty of Fisheries Sciences JAPAN
| | - Masato Oikawa
- Yokohama City University Graduate School of Nanobioscience Seto 22-2Kanazawa-ku 236-0027 Yokohama JAPAN
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Shiozaki H, Miyahara M, Otsuka K, Miyako K, Honda A, Takasaki Y, Takamizawa S, Tukada H, Ishikawa Y, Sakai R, Oikawa M. Studies on Aculeines: Synthetic Strategy to the Fully Protected Protoaculeine B, the N-Terminal Amino Acid of Aculeine B. Org Lett 2018; 20:3403-3407. [DOI: 10.1021/acs.orglett.8b01331] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroki Shiozaki
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Masayoshi Miyahara
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Kazunori Otsuka
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Kei Miyako
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan
| | - Akito Honda
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan
| | - Yuichi Takasaki
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Satoshi Takamizawa
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Hideyuki Tukada
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Yuichi Ishikawa
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Ryuichi Sakai
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan
| | - Masato Oikawa
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
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Motiwala HF, Vekariya RH, Aubé J. Intramolecular Friedel-Crafts Acylation Reaction Promoted by 1,1,1,3,3,3-Hexafluoro-2-propanol. Org Lett 2015; 17:5484-7. [PMID: 26496158 DOI: 10.1021/acs.orglett.5b02851] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Simple dissolution of an arylalkyl acid chloride in 1,1,1,3,3,3-hexafluoro-2-propanol promotes an intramolecular Friedel-Crafts acylation without additional catalysts or reagents. This reaction is operationally trivial in both execution and product isolation (only requiring concentration followed by purification) and accommodates a broad range of substrates. Preliminary studies that bear upon potential reaction mechanisms are reported.
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Affiliation(s)
- Hashim F Motiwala
- Department of Medicinal Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - Rakesh H Vekariya
- Department of Medicinal Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
| | - Jeffrey Aubé
- Department of Medicinal Chemistry, University of Kansas , Lawrence, Kansas 66047, United States
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Palaniraja J, Roopan SM. Iodine-mediated synthesis of indazolo-quinazolinones via a multi-component reaction. RSC Adv 2015. [DOI: 10.1039/c4ra13779e] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report an expeditious synthesis of selected indazolo-quinazolinone derivatives via an iodine-mediated multi-component reaction (MCR).
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Affiliation(s)
- Jeyakannu Palaniraja
- Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore
| | - Selvaraj Mohana Roopan
- Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore
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6
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Shakoori A, Bremner JB, Willis AC, Haritakun R, Keller PA. Rapid Cascade Synthesis of Poly-Heterocyclic Architectures from Indigo. J Org Chem 2013; 78:7639-47. [DOI: 10.1021/jo401210r] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alireza Shakoori
- School of Chemistry, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - John B. Bremner
- School of Chemistry, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Anthony C. Willis
- School of Chemistry, The Australian National University, Canberra, ACT 0200,
Australia
| | - Rachada Haritakun
- National Centre
for Genetic Engineering
and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Phaholyothin Road, Klong1,
Klong Luang, Pathumanthani 12120 Thailand
| | - Paul A. Keller
- School of Chemistry, University of Wollongong, Wollongong, NSW, 2522, Australia
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Reddy BVS, Reddy MR, Rao YG, Yadav JS, Sridhar B. Cu(OTf)2-Catalyzed Synthesis of 2,3-Disubstituted Indoles and 2,4,5-Trisubstituted Pyrroles from α-Diazoketones. Org Lett 2013; 15:464-7. [DOI: 10.1021/ol303206w] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- B. V. Subba Reddy
- Natural Product Chemistry, Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
| | - M. Ramana Reddy
- Natural Product Chemistry, Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
| | - Y. Gopal Rao
- Natural Product Chemistry, Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
| | - J. S. Yadav
- Natural Product Chemistry, Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
| | - B. Sridhar
- Natural Product Chemistry, Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500 007, India
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