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Alkubaisi BO, Ravi A, Srikanth G, Sebastian A, Khanfar MA, El-Gamal MI, Sieburth SM, Shahin AI, Al-Tel TH. Divergent Protocol for the Synthesis of Isoquinolino[1,2- b]quinazolinone and Isoquinolino[2,1- a]quinazolinone Derivatives. J Org Chem 2023; 88:4244-4253. [PMID: 36926917 DOI: 10.1021/acs.joc.2c02791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
The development of robust and step-economic strategies to access structurally diverse drug-like compound collections remains a challenge. A distinct structural option that constitutes the core scaffold of many biologically significant molecules is the quinazolinone ring system. Several members of this family of privileged substructures have gained attention due to their diverse biological activities. In this context, the development of an efficient strategy for their access is needed. Herein, we report a divergent metal-free operation to access a diverse collection of C6-substituted pyrrolo[4',3',2':4,5]isoquinolino[1,2-b]quinazolin-8(6H)-one and pyrrolo[4',3',2':4,5]isoquinolino[2,1-a]quinazolin-12(6H)-one architectures. The described cascade unites Friedel-Crafts and aza-Michael addition reactions. This operationally simple protocol enables a rapid access to these scaffolds and is compatible with a wide scope of starting materials. In addition, the cascade features a promising approach for the design of unique compound libraries for drug design and discovery programs.
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Affiliation(s)
- Bilal O Alkubaisi
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Anil Ravi
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Gourishetty Srikanth
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah 26666, United Arab Emirates
| | - Anusha Sebastian
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Monther A Khanfar
- College of Science, Department of Chemistry, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Mohammed I El-Gamal
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates.,Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Scott McN Sieburth
- Department of Chemistry, Temple University, 201 Beury Hall, Philadelphia, Pennsylvania 19122, United States
| | - Afnan I Shahin
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Taleb H Al-Tel
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates.,Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
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Wu H, Wang Y, Li T, Liu J, Wang X. A Cascade synthesis of 11
bH
‐Imidazo[1,2‐
c
]isoquinolino[2,1‐
a
]quinazoline derivatives catalyzed by AgOTf. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3940] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hao Wu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional MaterialsJiangsu Normal University Xuzhou People's Republic of China
| | - Yi‐Chun Wang
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional MaterialsJiangsu Normal University Xuzhou People's Republic of China
| | - Tuan‐Jie Li
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional MaterialsJiangsu Normal University Xuzhou People's Republic of China
| | - Jian‐Quan Liu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional MaterialsJiangsu Normal University Xuzhou People's Republic of China
| | - Xiang‐Shan Wang
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional MaterialsJiangsu Normal University Xuzhou People's Republic of China
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