Search Results - "Andrei, Cesar C."

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    Regioselectivity in the acylation of methylhydroquinone dimethyl ether: an unprecedented case of indirect steric hindrance by Macedo, Fernando, Andrei, César C., Campiom, Danilo, Ishikawa, Noemia K.

    Published in Tetrahedron letters (06-04-2011)
    “…The origin of the highly regioselective acylation of methylhydroquinone dimethyl ether was investigated using geometry minimization (ab initio and DFT) and NOE…”
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    New Spirorotenoids from Tephrosia candida by Andrei, Cesar C., Vieira, Paulo C., Fernandes, João B., Silva, M. Fátima das G. F. da, Fo, Edson Rodrigues

    “…The ethyl acetate extract of roots of Tephrosia candida afforded three new spirorotenoids belonging to a new class of spirocompounds, named tephrospirolactone,…”
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    C-prenylflavonoids from roots of Tephrosia tunicata by ANDREI, César C, FERREIRA, Dalva T, FACCIONE, Milton, DE MORAES, Luiz Alberto B, DE CARVALHO, Mario G, BRAZ-FILHO, Raimundo

    Published in Phytochemistry (Oxford) (01-12-2000)
    “…A 3',3'-di-(gamma,gamma-dimethylallyl)-2',4'-di-oxo-enolchalcone (tunicatachalcone) and five known C-prenylflavonoids were isolated and/or identified from the…”
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    Dimethylchromene rotenoids from Tephrosia candida by Andrei, Cesar C., Vieira, Paulo C., Fernandes, João B., da Silva, M.Fátima das G.F., Rodrigues^Fo, Edson

    Published in Phytochemistry (Oxford) (01-11-1997)
    “…The hexane and ethyl acetate extracts of roots of Tephrosia candida afforded a new rotenoid, 12a-hydroxy-β-toxicarol, together with a series of known ones,…”
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    Analysis of Rotenoids by High Temperature High Resolution Gas Chromatography-Mass Spectrometry by Pereira, Alberto S., Pinto, Angelo C., Cardoso, Jari N., Neto, Francisco R. Aquino, Vieira, Paulo C., Fernandes, João B., da Silva, M. Fátima das G. F., Andrei, César C.

    Published in Journal of high resolution chromatography (01-09-1998)
    “…A short glass capillary column coated with PS‐090 (20% phenyl–80% methylpolysiloxane, of 10 m × 0.30 mm i.d.; with 0.1 μm film thickness) was used to analyze…”
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