Blar i forfatter "Michael Siranjeevi, Raja Priyanka Mary"

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    • Dendrobeaniamine A, a new alkaloid from the Arctic marine bryozoan Dendrobeania murrayana 

      Michael Siranjeevi, Raja Priyanka Mary; Hansen, Espen; Isaksson, Johan; Andersen, Jeanette hammer; Østnes Hansen, Kine (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-20)
      The new guanidine alkaloid Dendrobeaniamine A (1) was isolated from the organic extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i>. The chemical structure of 1 was elucidated by spectroscopic experiments, including 1D and 2D NMR and HRESIMS analysis. Compound 1 is a lipoamino acid, consisting of a C<sub>12</sub> fatty acid anchored to the amino acid arginine. The bioactivity of 1 ...

    • Dendrobeaniamine A, a new alkaloid from the Arctic marine bryozoan Dendrobeania murrayana 

      Michael Siranjeevi, Raja Priyanka Mary (Conference object; Konferansebidrag, 2019)
      Chemistry guided purification of the organic extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i> yielded one new compound, Dendrobeaniamine A, and it was present in abundant amounts in the organic extract. Dendrobeaniamine A is a fusion of long chain aliphatic fatty acid and the cationic amino acid residue arginine.The bioactivity and natural function of this compound thus remain to ...

    • Isolation and Charecterization of New secondary metabolites from the Arctic Bryozoans Securiflustra securifrons and Dendrobeania murrayana 

      Michael Siranjeevi, Raja Priyanka Mary (Doctoral thesis; Doktorgradsavhandling, 2019-08-30)
      Marine bryozoans is a prolific source of structurally diverse bioactive secondary metabolites. However, the total number of natural products isolated from marine bryozoans is limited, The present study was focused on isolation and characterization of new compounds from Arctic marine bryozoans. The novel compounds were isolated by using two different approaches. For bioassay-guided isolation, fractions ...

    • LC-MS based dereplication and isolation of compound from Arctic marine bryozoan Dendrobeania murrayana 

      Michael Siranjeevi, Raja Priyanka Mary (Conference object; Konferansebidrag, 2018)
      The new guanidine based alkaloid Dendrobeaniamine A was isolated from the organic crude extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i>. The structure was determined by interpretation of data from 1D and 2D NMR spectroscopic methods and mass spectrometry (HR-MS) analysis. Dendrobeaniamine A did not show any biological activities in the applied bioassays. Further bioactivity ...