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  • Studies toward the synthesis of coibamide A and analogues

    Creator:
    Li, Dong
    Abstract:
    Coibamide A is a highly methylated cyclic depsipeptide isolated from Panamanian marine filamentous cyanobacteria as part of an International Cooperative Biodiversity Groups (ICBG) program based in Panama. This structurally unique agent exhibits potent cancer cell toxicity with an unprecedented selectivity profile in the National Cancer Institute (NCI) 60 cell line...
    Resource Type:
    Dissertation

  • Biosynthesis of acivicin and 4-hydroxyacivicin

    Creator:
    Ju, Shyh-chen
    Resource Type:
    Dissertation

  • Biosynthetic engineering of new pactamycins

    Creator:
    Lu, Wanli
    Abstract:
    Among the myriad of naturally occurring bioactive compounds are the aminocyclopentitol-containing natural products that represent a family of sugar-derived microbial secondary metabolites, such as the antibiotics pactamycin, allosamidin, and trehazolin. Pactamycin, a structurally unique aminocyclitol antibiotic isolated from Streptomyces pactum, consists of a 5-membered ring aminocyclitol (cyclopentitol) unit, two aromatic...
    Resource Type:
    Dissertation

  • Synthetic studies toward the total synthesis of amphidinolide B₁

    Creator:
    Zhang, Wei
    Abstract:
    Amphidinolide B₁ is one of the most potent cytotoxic compounds in the amphidinolide family. Its bioactivity and intriguing structure has drawn attention from synthetic chemists. Although numerous synthetic efforts toward the total synthesis of amphidinolide B₁ have been published, it still remains an unconquered synthetic target. One of the unique...
    Resource Type:
    Dissertation

  • Functional analysis of the biosynthetic gene cluster of the antitumor agent cetoniacytone A

    Creator:
    Wu, Xiumei
    Abstract:
    A gene cluster responsible for the biosynthesis of the antitumor agent cetoniacytone A was identified in Actinomyces sp. strain Lu 9419, an endosymbiotic bacteria isolated from the intestines of the rose chafer beetle. The nucleotide sequence analysis of the 26 Kb DNA region revealed the presence of 17 complete ORFs,...
    Resource Type:
    Dissertation

  • Total synthesis of phorboxazole A

    Creator:
    Lee, Tae Hee
    Abstract:
    The total synthesis of a highly potent cytotoxic marine natural product, phorboxazole A, is described. Both a palladium(II)-mediated and a palladium(II)-catalyzed intramolecular alkoxycarbonylation were used as key steps for the preparation of the two cis-2,6-disubstituted tetrahydropyran rings (C22-C26 and C11-C15) of phorboxazole A. The synthesis used a convergent approach involving...
    Resource Type:
    Dissertation