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A biomimetic approach to the total synthesis of Stemona alkaloids

Grant number: 16/12541-4
Support Opportunities:Regular Research Grants
Duration: September 01, 2016 - August 31, 2018
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Organic Chemistry
Principal Investigator:Ronaldo Aloise Pilli
Grantee:Ronaldo Aloise Pilli
Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


The total synthesis of representatives of the Stemona alkaloids is proposed based on a biossynthetic rationale. Our synthetic efforts will be directed to the synthesis of racemic tuberostemospironine, stemolactam R, tuberostemospiroline, croomine and sessilifoliamide J. Our approach is based on the intramolecular tandem vinylogous Mannich cyclization reaction of a silyloxyfuran and an iminium ion, generated in situ via reduction of the corresponding azide. An asymmetric version of the intramolecular tandem vinylogous Mannich cyclization reaction based on chiral Bronsted acids will be also explored. In addition to explore a novel approach to the synthesis of Stemona alkaloids, this proposal aims to support the cytotoxic evaluation of this family of natural products which so far has not received much attention from the scientific community. (AU)

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PILLI, RONALDO ALOISE; DE TOLEDO, IAN; MEIRELLES, MATHEUS ANDRADE; GRIGOLO, THIAGO AUGUSTO. Goniothalamin-Related Styryl Lactones: Isolation, Synthesis, Biological Activity and Mode of Action. Current Medicinal Chemistry, v. 26, n. 41, p. 7372-7451, . (16/12541-4, 13/07607-8)
RAITZ, ISMAEL; DE SOUZA FILHO, ROBERTO Y.; DE ANDRADE, LORENA P.; CORREA, JOSE R.; NETO, BRENNO A. D.; PILLI, RONALDO A.. Preferential Mitochondrial Localization of a Goniothalamin Fluorescent Derivative. ACS OMEGA, v. 2, n. 7, p. 3774-3784, . (09/51602-5, 16/12541-4, 13/07607-8)
-FELICE, FRANCO DELLA; SAROTTI, ARIEL M.; PILLI, RONALDO A.. Catalytic Asymmetric Synthesis and Stereochemical Revision of (+)-Cryptoconcatone H. Journal of Organic Chemistry, v. 82, n. 17, p. 9191-9197, . (14/25474-8, 16/12541-4, 13/07607-8)
DELLA-FELICE, FRANCO; PILLI, RONALDO A.; SAROTTI, ARIEL M.. Computer-Guided Total Synthesis of Natural Products. Recent Examples and Future Perspectives. Journal of the Brazilian Chemical Society, v. 29, n. 5, p. 1041-1075, . (14/25474-8, 16/12541-4, 13/07607-8)
PILLI, RONALDO A.; DE ASSIS, FRANCISCO F.. Organic Synthesis: New Vistas in the Brazilian Landscape. Anais da Academia Brasileira de Ciências, v. 90, n. 1, 1, p. 895-941, . (13/07607-8, 16/12541-4, 16/08569-0, 17/06836-4)
DELLA-FELICE, FRANCO; SAROTTI, ARIEL M.; KRISCHE, MICHAEL J.; PILLI, RONALDO A.. Total Synthesis and Structural Validation of Phosdiecin A via Asymmetric Alcohol-Mediated Carbonyl Reductive Coupling. Journal of the American Chemical Society, v. 141, n. 35, p. 13778-13782, . (17/18487-4, 16/12541-4, 13/07607-8, 14/25474-8)
DELLA-FELICE, FRANCO; DE ASSIS, FRANCISCO F.; SAROTTI, ARIEL M.; PILLI, RONALDO A.. Palladium-Catalyzed Formation of Substituted Tetrahydropyrans: Mechanistic Insights and Structural Revision of Natural Products. SYNTHESIS-STUTTGART, v. 51, n. 7, p. 1545-1560, . (13/07607-8, 16/12541-4, 14/25474-8)

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