听力与言语-语言病理学

行为科学

医学伦理学

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  • Total synthesis of both enantiomers of the macrocyclic lactone citreofuran.

    abstract::Both enantiomers of the polyketide-derived lactone citreofuran (4) have been prepared. The enantiopure building blocks were obtained on a chemoenzymatic route ((S)-6) and by a chiral pool synthesis ((R)-6). The crucial step in the synthesis, a macrolactonization, was accomplished under Mitsunobu conditions. ...

    journal_title:Natural product research

    pub_type: 杂志文章

    doi:10.1080/1478641031000137004

    authors: Bracher F,Schulte B

    更新日期:2003-08-01 00:00:00

  • Isolation and spectroscopic study of pectic substances from kenaf (Hibiscus cannabinus L.).

    abstract::Pectins were isolated from bark, wood and pith of kenaf (Hibiscus cannabinus L.) variety Cuba108. Imidazole was used as extractant. The isolated pectins were studied by 13C nuclear magnetic resonance (13C-NMR) spectroscopy and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). From the spectroscopic...

    journal_title:Natural product research

    pub_type: 杂志文章

    doi:10.1080/1478641031000104136

    authors: Pappas CS,Tarantilis PA,Polissiou MG

    更新日期:2003-06-01 00:00:00

  • Antiplatelet and anti-HIV constituents from Euchresta formosana.

    abstract::Phytochemical investigation of the methanol extract of Euchresta formosana resulted in the isolation of thirty-four compounds. Compounds 1, 3-12, 15, 27, 29 and 32-24 were isolated from this species for the first time. These compounds were identified by spectral analyses and tested for antiplatelet aggregation and ant...

    journal_title:Natural product research

    pub_type: 杂志文章

    doi:10.1080/1478641031000103669

    authors: Lo WL,Wu CC,Chang FR,Wang WY,Khalil AT,Lee KH,Wu YC

    更新日期:2003-04-01 00:00:00

  • Synthesis of (1R,2R,7R,7aS)-1-hydroxymethyl-2,3,5,6,7,7a-hexahydropyrrolizidine-1,2,7-triol from rosmarinine degradation.

    abstract::A novel tetrahydroxypyrrolizidine alkaloid (6) was obtained from rosmarinine degradation in 23% yield (isolated from Senecio callosas). ...

    journal_title:Natural product research

    pub_type: 杂志文章

    doi:10.1080/1057563021000028000

    authors: Nieto-Alvarez DA,Calderón JS,Mancilla T

    更新日期:2003-01-01 00:00:00

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