Search Results - "Pilli, R A"

Styryl lactones and their derivatives: biological activities, mechanisms of action and potential leads for drug design by de Fátima, A, Modolo, L V, Conegero, L S, Pilli, R A, Ferreira, C V, Kohn, L K, de Carvalho, J E

“…Nature is an inexhaustible source of natural compounds with interesting biological activities. In general, natural products are an important source of new…”
Get more information

In vitro studies of anticandidal activity of goniothalamin enantiomers by Martins, C.V.B, de Resende, M.A, da Silva, D.L, Magalhães, T.F.F, Modolo, L.V, Pilli, R.A, de Fátima, Â

“…The antifungal activity of (R)-goniothalamin (1) and (S)-goniothalamin (ent-1) was evaluated against six Candida species. The in vitro effect of these…”
Get full text

Intrinsic Gas-Phase Electrophilic Reactivity of Cyclic N-Alkyl- and N-Acyliminium Ions by D'Oca, Marcelo G. M, Moraes, Luiz Alberto B, Pilli, Ronaldo A, Eberlin, Marcos N

“…The intrinsic gas-phase reactivity of cyclic N-alkyl- and N-acyliminium ions toward addition of allyltrimethylsilane (ATMS) has been compared using MS2 and MS3…”
Get full text

Biosynthesis of a trypanocide by Chromobacterium violaceum by DURAN, N, ANTONIO, R. V, HAUN, M, PILLI, R. A

“…Radio-isotope studies indicated not only that L-tryptophan can serve as carbon source for synthesis of the trypanocide, violacein by Chromobacterium violaceum…”
Get full text

Recent progress in the chemistry of the Stemona alkaloids by Pilli, R A, Ferreira de Oliveira, M C

Get more information

Microbial screening for the enantiospecific production of alkyl esters of 4-chloro-3-hydroxybutanoic acid by Cagnon, J.R., Marsaioli, A.J., Rialto, V.B., Pilli, R.A., Manflo, G.P., Eguchi, S.Y.

“…This article describes our preliminary screening results of yeasts and fungi isolated from exotic environments like the Atlantic rain forest, from the roots of…”
Get full text

Relative configuration of a δ-lactone isolated from mandibular gland secretion of Calomyrmex sp. males by PILLI, R. A, BOCKELMANN, M. A, DEL CORSO, A

“…The relative configuration of a delta -lactone isolated from the mandibular gland extracts of Calomyrmex sp. males has been determined to be…”
Get full text

Synthesis and biological activities of N,N-dimethyl-2-propen-1-amine derivatives by De Conti, R, Gimenez, SMN, Haun, M, Pilli, RA, De Castro, SL, Durán, N

“…The synthesis of several 3-(4′-bromo[1,1′-biphenyl]-4-yl)-3-(4-X-phenyl)- N,N-dimethyl-2-propen-l-amine derivatives is described. These compounds are potential…”
Get full text

First Total Synthesis of Aspinolide B, a New Pentaketide Produced by Aspergillus ochraceus by PILLI, Ronaldo A., VICTOR, Mauricio M., DE MEIJERE, Armin

“…The first asymmetric total synthesis of Aspinolide B (1), a new 10-membered lactone discovered by chemical screening methods in the cultures of Aspergillus…”
Get full text

Degradation of β-O-4 lignin model and related compounds by the ascomycete Chrysonilia sitophila (TFB 27441 strain) by NOGUEIRA, R. F. P, PILLI, R. A, DURAN, N

“…Growth of the ascomycete Chrysonilia sitophila during degradation of lignin model dimers and monomers was compared to a glucose control. An inhibition of…”
Get full text

Addition of carbon nucleophiles to substituted N-acyliminium ions. A stereoselective route to trans-fused decahydroquinoline systems by Maldaner, Adriano O, Pilli, Ronaldo A

“…A stereoselective route to trans-fused 2-substituted decahydroquinoline hydrochloride 11 featuring the addition of allyl tri- n-butyltin to a disubstituted…”
Get full text

Stereoselective total synthesis of some insect pheromones: (±)-serricornine and (±)-invictolide by Pilli, R. A., Murta, M. M.

“…An efficient (12 steps, 12% overallyield) and stereoselective total synthesis of (±)-serricornine (1) the sex pheromone of the cigarette beetle (Lasioderma…”
Get full text

Stereoselective alkylation of N-Boc-2-pyrrolidinones and N-Boc-2-piperidinones. Synthesis and characterization of disubstituted lactams by Maldaner, Adriano O., Pilli, Ronaldo A.

“…Alkylation of enolates of monosubstituted N-Boc lactams 4–6 afforded trans-disubstituted lactams as the major isomer. In the pyrrolidinone series,…”
Get full text

Stereoselective total synthesis of (.+-.)-invictolide. An efficient preparation of a trisubstituted .delta.-lactone from aldol precursors by Pilli, Ronaldo Aloise, Murta, Maria Marcia

Get full text

Cytotoxic activity of ( S)-goniothalamin and analogues against human cancer cells by de Fátima, Ângelo, Kohn, Luciana K., de Carvalho, João Ernesto, Pilli, Ronaldo A.

“…( R)- and ( S)-Goniothalamin ( 1) and analogues 2– 9 were efficiently prepared in high overall yield and enantiomeric purity, and their cytotoxic activities…”
Get full text

Enantioselective Total Syntheses of (+)-Arborescidine A, (−)-Arborescidine B, and (−)-Arborescidine C by Santos, Leonardo S, Pilli, Ronaldo A, Rawal, Viresh H

“…Described are the first enantioselective total syntheses of (+)-arborescidine A ((+)-1), (−)-arborescidine B ((−)-2), and (−)-arborescidine C ((−)-3), via…”
Get full text

( R)-Goniothalamin: total syntheses and cytotoxic activity against cancer cell lines by de Fátima, Ângelo, Kohn, Luciana Konecny, Antônio, Márcia Aparecida, de Carvalho, João Ernesto, Pilli, Ronaldo Aloise

“…The total syntheses of ( R)-goniothalamin ( 1) via catalytic asymmetric allylation of α-benzyloxyacetaldehyde ( 2), followed by ring-closing metathesis and…”
Get full text

Total syntheses of ( R)-argentilactone and ( R)-goniothalamin via catalytic enantioselective allylation of aldehydes by de Fátima, Ângelo, Pilli, Ronaldo Aloise

“…The total syntheses of ( R)-argentilactone (five steps, 25% overall yield) and ( R)-goniothalamin (three steps, 61% overall yield) have been described through…”
Get full text

Enhanced trans diastereoselection in the allylation of cyclic chiral N-acyliminium ions. Synthesis of hydroxylated indolizidines by Klitzke, Clécio Fernando, Pilli, Ronaldo Aloise

“…A short synthesis of hydroxylated indolizidines is reported. The key steps were the allylation of chiral cyclic N-acyliminium ions derived from malic and…”
Get full text

Diastereoselective addition of nitro compounds to α,β-unsaturated γ-butyrolactones by Rosso, Giovanni B., Pilli, Ronaldo A.

“…Herein, we report the results on the diastereoselective addition of nitro compounds to α,β-unsaturated γ-butyrolactones to afford vicinal trans di- and…”
Get full text