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Shrestha G, Panza M, Singh Y, Stine K, Demchenko AV. N‐Alkylated analogues of indolylthio glycosides as glycosyl donors with enhanced activation profile. European J Org Chem 2022; 2022. [PMID: 36339352 PMCID: PMC9635513 DOI: 10.1002/ejoc.202200300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
While studying indolylthio glycosides, previously we determined their activation profile that required large excess of activators. This drawback was partially addressed in the present study of N-alkylated SInR derivatives. The activation process was studied by NMR and the increased understanding of the mechanism led to a discovery of different activation pathways taking place with SIn versus SInR derivatives. Also investigated was orthogonality of the SInR leaving groups versus thioglycosides and selective activation of thioimidates over SInR glycosides.
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Affiliation(s)
- Ganesh Shrestha
- UMSL: University of Missouri-St Louis Chemistry and biochemistry UNITED STATES
| | - Matteo Panza
- UMSL: University of Missouri-St Louis Chemistry and biochemistry UNITED STATES
| | - Yashapal Singh
- UMSL: University of Missouri-St Louis Chemistry and biochemistry UNITED STATES
| | - Keith Stine
- UMSL: University of Missouri-St Louis Chemistry and biochemistry UNITED STATES
| | - Alexei V. Demchenko
- Saint Louis University Chemistry 3501 Laclede Ave 63103 St. Louis UNITED STATES
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Abstract
The S-indolyl (SIn) anomeric moiety was investigated as a new leaving group that can be activated for chemical glycosylation under a variety of conditions including thiophilic and metal-assisted pathways. Understanding of the reaction pathways for the SIn moiety activation was achieved via the extended mechanistic study. Also reported is how the new SIn donors fit into selective activation strategies for oligosaccharide synthesis.
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Affiliation(s)
- Ganesh Shrestha
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Matteo Panza
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Yashapal Singh
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Nigam P Rath
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
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Panza M, Neupane D, Stine KJ, Demchenko AV. The development of a dedicated polymer support for the solid-phase oligosaccharide synthesis. Chem Commun (Camb) 2020; 56:10568-10571. [PMID: 32785304 DOI: 10.1039/d0cc03885g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Reported herein is the development of a novel polystyrene-based resin that we named PanzaGel. The resin was equipped with diethylene glycol-derived cross-linker with the dedicated application to polymer supported glycan synthesis in mind. After investigating its swelling properties and obtaining encouraging data for its chemical and thermal stability we accessed the amenability of PanzaGel to the HPLC-based platform for the automated synthesis. Comparable glycosylation results to those with traditional supports have been obtained in the synthesis of glycans up to pentasaccharide that was obtained in 30% overall yield. The automated synthesis set-up implemented a common analytical autosampler for delivering all reagents for all steps of the glycan synthesis and cleavage.
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Affiliation(s)
- Matteo Panza
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA.
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Panza M, Stine KJ, Demchenko AV. HPLC-assisted automated oligosaccharide synthesis: the implementation of the two-way split valve as a mode of complete automation. Chem Commun (Camb) 2020; 56:1333-1336. [PMID: 31930269 PMCID: PMC7656230 DOI: 10.1039/c9cc08876h] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Reported herein is the development of a user-friendly platform for simple and transformative automation based on standard HPLC equipment. We showcase how the improved platform works in application to the completely automated, a "press of the button," synthesis of various glycan sequences.
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Affiliation(s)
- Matteo Panza
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA.
| | - Keith J Stine
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA.
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Boulevard, St. Louis, Missouri 63121, USA.
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Panza M, Civera M, Yasomanee JP, Belvisi L, Demchenko AV. Bromine-Promoted Glycosidation of Conformationally Superarmed Thioglycosides. Chemistry 2019; 25:11831-11836. [PMID: 31286579 DOI: 10.1002/chem.201901969] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/03/2019] [Indexed: 01/24/2023]
Abstract
Presented herein is a study of the conformation and reactivity of highly reactive thioglycoside donors. The structural studies have been conducted using NMR spectroscopy and computational methods. The reactivity of these donors has been investigated in bromine-promoted glycosylations of aliphatic and sugar alcohols. Swift reaction times, high yields, and respectable 1,2-cis stereoselectivity were observed in a majority of these glycosylations.
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Affiliation(s)
- Matteo Panza
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri, 63121, USA
| | - Monica Civera
- Department of Chemistry, University of Milan, 20133, Milan, Italy
| | - Jagodige P Yasomanee
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri, 63121, USA
| | - Laura Belvisi
- Department of Chemistry, University of Milan, 20133, Milan, Italy
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri, 63121, USA
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Abstract
Advances in carbohydrate chemistry have certainly made common oligosaccharides much more accessible. However, many current methods still rely heavily upon specialized knowledge of carbohydrate chemistry. The application of automated technologies to chemical and life science applications such as genomics and proteomics represents a vibrant field. These automated technologies also present opportunities for their application to organic synthesis, including that of the synthesis of oligosaccharides. However, application of automated methods to the synthesis of carbohydrates is an underdeveloped area as compared to other classes of biomolecules. The overarching goal of this review article is to present the advances that have been made at the interface of carbohydrate chemistry and automated technology.
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Affiliation(s)
- Matteo Panza
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Salvatore G. Pistorio
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Keith J. Stine
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Alexei V. Demchenko
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
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Sattin S, Panza M, Vasile F, Berni F, Goti G, Tao J, Moroni E, Agard D, Colombo G, Bernardi A. Synthesis of Functionalized 2-(4-Hydroxyphenyl)-3-methylbenzofuran Allosteric Modulators of Hsp90 Activity. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600420] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sara Sattin
- Department of Chemistry; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Matteo Panza
- Department of Chemistry; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Francesca Vasile
- Department of Chemistry; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Francesca Berni
- Department of Chemistry; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Giulio Goti
- Department of Chemistry; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Jiahui Tao
- Howard Hughes Medical Institute and Dept. of Biochemistry & Biophysics; University of California; 94158 San Francisco California USA
| | - Elisabetta Moroni
- ICRM-CNR; Via Mario Bianco 9 20131 Milano Italy
- IRCCS MultiMedica; Via Fantoli 16/15 20138 Milano Italy
| | - David Agard
- Howard Hughes Medical Institute and Dept. of Biochemistry & Biophysics; University of California; 94158 San Francisco California USA
| | | | - Anna Bernardi
- Department of Chemistry; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
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Imbriaco M, Sodano A, Riccardi A, Del Vecchio S, Panza M, Limite G, Pace U, Forestieri P, Petrella M, Salvatore G. Accuracy of dynamic contrast-enhanced MR imaging in patients with indeterminate mammograms. Eur J Cancer 1998. [DOI: 10.1016/s0959-8049(98)80303-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
In 1993-94, in Liguria (a northwestern Italian region) a study was carried out on dyschromatopsia, a congenital sex-linked form of colour blindness. 3124 junior high school boys aged 10-15 years were tested using Ishihara plates (1973 edition) and Farnsworth's D-15 test (1947 edition). 152 students were identified as colour blind (4.87%), a value slightly below the Italian average of 5.3%. The school achievement of these students was assessed by means of the school marks of two randomised subsamples composed of 82 dyschromates and 82 orthochromates, paired homogeneously by age and class. Statistical analysis indicated significantly lower general school achievement for the 82 dyschromate subjects (except for art). The learning difficulties of dyschromate persons for whom colour is a basic didactic tool are discussed. Introduction of dyschromatopsia tests at preschool would be desirable.
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Bermudez LE, Panza M, Velasco E, Vidal E. [Effect of systemic antibiotic therapy on microbial flora of gastrointestinal tract in the hematological patients]. Rev Paul Med 1984; 102:256-9. [PMID: 6535218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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do Valle JC, Sanchez RH, Puppin S, Panza M, Guimarães SJ. [Electrocardiographic changes in breast cancer]. AMB Rev Assoc Med Bras 1978; 24:234-6. [PMID: 309615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Guimarães SJ, Panza M, Sanchez RH, de Castro O, Pereira AF, do Valle JC. [Giant pheochromocytoma, simulating hepatomegaly]. AMB Rev Assoc Med Bras 1974; 20:326-8. [PMID: 4548545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Houlí J, Guimarães SJ, Panza M. [Digestive symptoms in collagen diseases]. Rev Bras Med 1971; 28:125. [PMID: 5556803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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