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Porras M, Hernández D, González CC, Boto A. “Cut and Paste” Processes in the Search of Bioactive Products: One-Pot, Metal-free O-Radical Scission-Oxidation-Addition of C, N or P-Nucleophiles. Front Chem 2022; 10:884124. [PMID: 35665068 PMCID: PMC9158125 DOI: 10.3389/fchem.2022.884124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Hypervalent iodine reagents have been applied in many metal-free, efficient synthesis of natural products and other bioactive compounds. In particular, treatment of alcohols, acetals and acids with hypervalent iodine reagents and iodine results in O-radicals that can undergo a β-scission reaction. Under these oxidative conditions, derivatives of amino acids, peptides or carbohydrates are converted into cationic intermediates, which can subsequently undergo inter- or intramolecular addition of nucleophiles. Most reported papers describe the addition of oxygen nucleophiles, but this review is focused on the addition of carbon, nitrogen and phosphorous nucleophiles. The resulting products (nucleoside and alkaloid analogs, unnatural amino acids, site-selectively modified peptides) are valuable intermediates or analogs of bioactive compounds.
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2
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Hernández D, Porras M, Boto A. Structural diversity using amino acid "Customizable Units": conversion of hydroxyproline (Hyp) into nitrogen heterocycles. Amino Acids 2022; 54:955-966. [PMID: 35414005 PMCID: PMC9213323 DOI: 10.1007/s00726-022-03159-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/20/2022] [Indexed: 12/01/2022]
Abstract
The ability of amino acid “customizable units” to generate structural diversity is illustrated by the conversion of 4-hydroxyproline (Hyp) units into a variety of nitrogen heterocycles. After a first common step, where the unit underwent a one-pot decarboxylation–alkylation reaction to afford 2-alkylpyrrolidines with high stereoselectivity, a divergent step was carried out. Thus, the deprotected 4-hydroxy group was used either to initiate a radical scission that afforded aliphatic β-amino aldehydes, or to carry out an elimination reaction, to give 2-alkyl-2,5-dihydro-1H-pyrroles. In the first case, the amines underwent a tandem reductive amination–cyclization to afford β-amino-δ-lactams, an efficient rigidifying unit in peptides. Different lactam N-substituents, such as alkylamines, peptides, and alkenyl chains suitable for olefin metathesis were introduced this way. In the second case, the pyrrole derivatives were efficiently converted into alkaloid and iminosugar derivatives in good global yields and with excellent stereoselectivity.
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Affiliation(s)
- Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
| | - Marina Porras
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
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Boto A, González CC, Hernández D, Romero-Estudillo I, Saavedra CJ. Site-selective modification of peptide backbones. Org Chem Front 2021. [DOI: 10.1039/d1qo00892g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Exciting developments in the site-selective modification of peptide backbones are allowing an outstanding fine-tuning of peptide conformation, folding ability, and physico-chemical and biological properties.
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Affiliation(s)
- Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
| | - Concepción C. González
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
| | - Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
| | - Iván Romero-Estudillo
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos. Av. Universidad 1001, Cuernavaca, Morelos 62209, Mexico
- Catedrático CONACYT-CIQ-UAEM, Mexico
| | - Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
- Programa Agustín de Betancourt, Universidad de la Laguna, 38200 Tenerife, Spain
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Saavedra CJ, Cuevas F, Romero‐Estudillo I, Boto A. Synthesis of Diketopiperazine Scaffolds with Tailored
N
‐ and α‐Chains by Selective Modification of Customizable Units. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000470] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3 38206-La Laguna Tenerife SPAIN
- BIOSIGMA SL, c/Antonio Dominguez Afonso, 16 38003-S/C Tenerife SPAIN
| | - Fernando Cuevas
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3 38206-La Laguna Tenerife SPAIN
- Centro de Investigaciones Químicas-IICBAUniversidad Autónoma del Estado de MorelosCatedrático CONACyT CIQ-UAEMAv. Universidad, 1001 62209 Cuernavaca MEXICO
| | - Ivan Romero‐Estudillo
- Centro de Investigaciones Químicas-IICBAUniversidad Autónoma del Estado de MorelosCatedrático CONACyT CIQ-UAEMAv. Universidad, 1001 62209 Cuernavaca MEXICO
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3 38206-La Laguna Tenerife SPAIN
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5
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Saavedra CJ, Carro C, Hernández D, Boto A. Conversion of “Customizable Units” into N-Alkyl Amino Acids and Generation of N-Alkyl Peptides. J Org Chem 2019; 84:8392-8410. [DOI: 10.1021/acs.joc.9b00114] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
- BIOSIGMA, Antonio Domı́nguez Alfonso 16, 38003-Sta. Cruz de Tenerife, Tenerife, Spain
| | - Carmen Carro
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
- BIOSIGMA, Antonio Domı́nguez Alfonso 16, 38003-Sta. Cruz de Tenerife, Tenerife, Spain
| | - Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
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Saavedra CJ, Hernández D, Boto A. Metal-Free, Site-Selective Peptide Modification by Conversion of “Customizable” Units into β-Substituted Dehydroamino Acids. Chemistry 2017; 24:599-607. [DOI: 10.1002/chem.201703758] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología, CSIC (Spanish Research Council); Avda. Astrofísico Fco. Sánchez 3 38206 La Laguna Tenerife SPAIN
| | - Dácil Hernández
- Instituto de Productos Naturales y Agrobiología, CSIC (Spanish Research Council); Avda. Astrofísico Fco. Sánchez 3 38206 La Laguna Tenerife SPAIN
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología, CSIC (Spanish Research Council); Avda. Astrofísico Fco. Sánchez 3 38206 La Laguna Tenerife SPAIN
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7
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Abstract
Advances in bioconjugation and native protein modification are appearing at a blistering pace, making it increasingly time consuming for practitioners to identify the best chemical method for modifying a specific amino acid residue in a complex setting. The purpose of this perspective is to provide an informative, graphically rich manual highlighting significant advances in the field over the past decade. This guide will help triage candidate methods for peptide alteration and will serve as a starting point for those seeking to solve long-standing challenges.
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Affiliation(s)
- Justine N. deGruyter
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Lara R. Malins
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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9
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Hernández D, Boto A, Guzmán D, Alvarez E. Metal-free, direct conversion of α-amino acids into α-keto γ-amino esters for the synthesis of α,γ-peptides. Org Biomol Chem 2017; 15:7736-7742. [DOI: 10.1039/c7ob02033c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An efficient, metal-free synthesis of unusual α-keto γ-amino esters from α-amino acids is achieved by a radical scission–oxidation–addition of silyloxy acrylates procedure, where no purification of the reaction intermediates is needed. The process allows the synthesis of α,γ-peptides.
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Affiliation(s)
- D. Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC
- 38206-La Laguna
- Spain
| | - A. Boto
- Instituto de Productos Naturales y Agrobiología del CSIC
- 38206-La Laguna
- Spain
| | - D. Guzmán
- Instituto de Productos Naturales y Agrobiología del CSIC
- 38206-La Laguna
- Spain
| | - E. Alvarez
- Instituto de Investigaciones Químicas (CSIC-USe)
- Isla de la Cartuja
- 41092-Sevilla
- Spain
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10
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Romero-Estudillo I, Saavedra C, Boto A, Álvarez E. Site-selective modification of peptides: From “customizable units” to novelα-aryl andα-alkyl glycine derivatives, and components of branched peptides. Biopolymers 2015; 104:650-62. [DOI: 10.1002/bip.22642] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/04/2015] [Accepted: 03/07/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Iván Romero-Estudillo
- Instituto de Productos Naturales y Agrobiología CSIC; Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna Tenerife Spain
| | - Carlos Saavedra
- Instituto de Productos Naturales y Agrobiología CSIC; Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna Tenerife Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología CSIC; Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna Tenerife Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas CSIC-USE; Avda. Américo Vespucio 49, Isla de la Cartuja, 41092 Sevilla Spain
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Optically active, magnetic microspheres: Constructed by helical substituted polyacetylene with pendent prolineamide groups and applied as catalyst for Aldol reaction. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Romero-Estudillo I, Boto A. Domino Process Achieves Site-Selective Peptide Modification with High Optical Purity. Applications to Chain Diversification and Peptide Ligation. J Org Chem 2015; 80:9379-91. [DOI: 10.1021/acs.joc.5b00932] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ivan Romero-Estudillo
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
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