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Liu H, Zhou SY, Wen GE, Liu XX, Liu DY, Zhang QJ, Schmidt RR, Sun JS. The 2,2-Dimethyl-2-( ortho-nitrophenyl)acetyl (DMNPA) Group: A Novel Protecting Group in Carbohydrate Chemistry. Org Lett 2019; 21:8049-8052. [PMID: 31532217 DOI: 10.1021/acs.orglett.9b03025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The 2,2-dimethyl-2-(ortho-nitrophenyl)acetyl (DMNPA) group was introduced to synthetic carbohydrate chemistry as a protecting group (PG) for the first time. Benefiting from a unique chemical structure and novel deprotection conditions, the DMNPA group can be cleaved rapidly and mutually orthogonal to other PGs. Orchestrated application of the DMNPA group with other PGs led to the highly efficient synthesis of the glycan of thornasterside A.
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Affiliation(s)
- Hui Liu
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China
| | - Si-Yu Zhou
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China
| | - Guo-En Wen
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China
| | - Xu-Xue Liu
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China
| | - De-Yong Liu
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China
| | - Qing-Ju Zhang
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China
| | - Richard R Schmidt
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China.,Department of Chemistry , University of Konstanz , D-78457 , Konstanz , Germany
| | - Jian-Song Sun
- National Research Centre for Carbohydrate Synthesis , Jiangxi Normal University , 99 Ziyang Avenue, Nanchang 330022 , China
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Weber J, Svatunek D, Krauter S, Tegl G, Hametner C, Kosma P, Mikula H. 2-O-Benzyloxycarbonyl protected glycosyl donors: a revival of carbonate-mediated anchimeric assistance for diastereoselective glycosylation. Chem Commun (Camb) 2019; 55:12543-12546. [DOI: 10.1039/c9cc07194f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Benzyloxycarbonyl can be used as participating group for the diastereoselective glycosylation of base-labile products and the synthesis of glycosyl esters.
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Affiliation(s)
- Julia Weber
- Institute of Applied Synthetic Chemistry
- TU Wien
- 1060 Vienna
- Austria
| | - Dennis Svatunek
- Institute of Applied Synthetic Chemistry
- TU Wien
- 1060 Vienna
- Austria
| | - Simon Krauter
- Institute of Applied Synthetic Chemistry
- TU Wien
- 1060 Vienna
- Austria
- Division of Organic Chemistry
| | - Gregor Tegl
- Institute of Applied Synthetic Chemistry
- TU Wien
- 1060 Vienna
- Austria
- Division of Organic Chemistry
| | | | - Paul Kosma
- Division of Organic Chemistry
- University of Natural Resources and Life Sciences
- Vienna (BOKU)
- Austria
| | - Hannes Mikula
- Institute of Applied Synthetic Chemistry
- TU Wien
- 1060 Vienna
- Austria
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Daragics K, Fügedi P. (2-Nitrophenyl)acetyl: a new, selectively removable hydroxyl protecting group. Org Lett 2010; 12:2076-9. [PMID: 20361745 DOI: 10.1021/ol100562f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The utility of the (2-nitrophenyl)acetyl (NPAc) group for the protection of hydroxyl functions is reported. (2-Nitrophenyl)acetates are readily prepared starting from the commercially available, inexpensive (2-nitrophenyl)acetic acid, and these esters are stable under a series of common carbohydrate transformations. The NPAc group can be removed selectively using Zn and NH(4)Cl without affecting a series of common protecting groups. This new protecting group is orthogonal with the commonly used tert-butyldimethylsilyl, levulinoyl, 9-fluorenylmethoxycarbonyl, naphthylmethyl, and p-methoxybenzyl groups.
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Affiliation(s)
- Katalin Daragics
- Department of Carbohydrate Chemistry, Chemical Research Center, Hungarian Academy of Sciences, H-1025 Budapest, Hungary
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Vatèle JM. 2-(Prenyloxymethyl)benzoyl (POMB) group: a new temporary protecting group removable by intramolecular cyclization. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.08.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Baek JY, Shin YJ, Jeon HB, Kim KS. Picolinyl group as an efficient alcohol protecting group: cleavage with Zn(OAc)2·2H2O under a neutral condition. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.05.125] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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