17 research outputs found

    Obtenção de esteróides do sisal.

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    bitstream/item/65431/1/CTAA-DOCUMENTOS-11-OBTENCAO-DE-ESTEROIDES-DO-SISAL-FL-02174.pdfSeparata de Revista Brasileira de Tecnologia, v. 4, p. 153-165, 1973

    PROTON AND C-13 NMR AND CONFORMATION IN SOLUTION OF SOME AMORPHANES (QUINGHAOSU DERIVATIVES)

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    The total proton and carhon-13 NMR assignments of quinghaosu I, II and V isolated from Artemisia annua cultivated in Brazil and of the synthetic derivatives quinghaosu alkene, ketone and epoxy are reported. The conformations and conformational equilibria of these compounds in solution were obtained from the spectral data and molecular mechanics calculations.321058359
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