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New Benzaldehyde and Benzopyran Compounds from the Endophytic Fungus Paraphaeosphaeria sp. F03 and Their Antimicrobial and Cytotoxic Activities *

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Author(s):
de Amorim, Marcelo R. ; Hilario, Felipe ; dos Santos Junior, Fernando M. ; Batista Junior, Joaom. ; Bauab, Tais M. ; Araujo, Angela R. ; Carlos, Iracilda Z. ; Vilegas, Wagner ; dos Santos, Lourdes C.
Total Authors: 9
Document type: Journal article
Source: Planta Medica; v. 85, n. 11/12, p. 8-pg., 2019-08-01.
Abstract

Three new benzaldehyde derivatives, sporulosaldeins A - C ( 1 - 3 ), and 3 new benzopyran derivatives, sporulosaldeins D - F ( 4 - 6 ), were discovered from an endophytic fungus, Paraphaeosphaeria sp. F03, which was isolated from Paepalanthus planifolius leaves. Compounds 1 - 6 were elucidated by 1- and 2-dimensional nuclear magnetic resonance experiments and high-resolution mass spectrometry analysis. The absolute configuration of compound 5 was determined through the comparison of experimental and calculated electronic circular dichroism data. Compounds 1 - 6 were found to exhibit antifungal activity with minimum inhibitory concentration (MIC) values of 7.8 - 250 mu g/mL and racemic mixture of compound 6 exhibited weak cytotoxicity against MCF-7 and LM3 with IC (50) values of 34.4 and 39.2 mu M, respectively. (AU)

FAPESP's process: 15/11058-5 - Chemical and biological prospecting of endophytic fungi associated with Paepalanthus planifolius (Eriocaulaceae)
Grantee:Marcelo Rodrigues de Amorim
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 14/25222-9 - Vibrational chiroptical spectroscopy for stereochemical characterization of small molecules and macromolecules
Grantee:João Marcos Batista Junior
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 16/23794-0 - Stereochemistry of complex natural compounds by vibrational optical activity: acetogenins
Grantee:Fernando Martins dos Santos Junior
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 15/04899-3 - Chemical study of the extracts produced by endophytic fungi associated with the aerial parts of Eriocaulaceae species and its antimicrobial activity
Grantee:Lourdes Campaner dos Santos
Support Opportunities: Regular Research Grants