Efficient total synthesis of neocryptolepine and synthetic access to 6-methylquinindoline from a common intermediate
dc.citation.title | RSC Advances | es |
dc.citation.volume | 7 | es |
dc.creator | Kaufman, Teodoro Saúl | |
dc.creator | Larghi, Enrique Leandro | |
dc.creator | Bracca, Andrea Beatriz Juana | |
dc.creator | Heredia, Daniel Alejandro | |
dc.creator | Mendez, María Virginia | |
dc.date.accessioned | 2017-11-15T00:12:00Z | |
dc.date.available | 2017-11-15T00:12:00Z | |
dc.date.issued | 2017-05-23 | |
dc.description | A convenient approach toward the indoloquinolines neocryptolepine and 6-methylquinindoline from a common intermediate, is reported. Both sequences, designed for maximum use of accessible reagents and robust conditions, are straightforward and efficient. They involved the amidation of 2- aminobenzaldehyde (prepared by iron-mediated reduction of 2-nitrobenzaldehyde) with 2- nitrophenylacetic acid, followed by a K2CO3-assisted cyclization to form a 3-(2-nitrophenyl)quinolin-2- one as the common precursor. Me2CO3-mediated N-methylation of the lactam, reduction of the nitro moiety and final cyclization resulted in 55% overall yield of neocryptolepine, whereas cyclocondensation and N-methylation afforded 79% overall yield of 6-methyl quinindoline. Thus, the sequences toward the targets entailed two POCl3-promoted C–N bond forming reactions, two Fe-mediated nitro group reductions and two base-promoted transformations. | es |
dc.description.fil | Fil: Kaufman, Teodoro Saúl. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario. CONICET; Argentina | es |
dc.description.fil | Fil: Larghi, Enrique Leandro. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario. CONICET; Argentina | es |
dc.description.fil | Fil: Bracca, Andrea Beatriz Juana. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario. CONICET; Argentina | es |
dc.description.fil | Fil: Heredia, Daniel Alejandro. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario. CONICET; Argentina. | es |
dc.description.fil | Fil: Mendez, María Virginia. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario. CONICET; Argentina. | es |
dc.description.sponsorship | Universidad Nacional de Rosario. Secretaría de Ciencia y Tecnología. | es |
dc.description.sponsorship | Consejo Nacional de Investigaciones Científicas y Técnicas | es |
dc.description.sponsorship | Agencia Nacional de Promoción Científica y Tecnológica | es |
dc.format | application/pdf | |
dc.format.extent | 28298–28307 | es |
dc.identifier.issn | 2046-2069 | es |
dc.identifier.uri | http://hdl.handle.net/2133/9279 | |
dc.language.iso | eng | es |
dc.publisher | The Royal Society of Chemistry | es |
dc.relation.publisherversion | http://pubs.rsc.org/en/content/articlelanding/2017/ra/c7ra05349e#!divAbstract | es |
dc.relation.publisherversion | DOI: 10.1039/c7ra05349e | es |
dc.rights | openAccess | es |
dc.rights.holder | The Royal Society of Chemistry | es |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | * |
dc.subject | Total synthesis | es |
dc.subject | Natural product | es |
dc.subject | Heterocycles | es |
dc.subject | Neocryptolepine | es |
dc.subject | Quinindoline | es |
dc.subject | Indoloquinolines | es |
dc.title | Efficient total synthesis of neocryptolepine and synthetic access to 6-methylquinindoline from a common intermediate | es |
dc.type | article | |
dc.type | artículo | |
dc.type | publishedVersion | |
dc.type.collection | articulo | |
dc.type.version | publishedVersion | es |
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