Total synthesis and biological evaluation of the tetramic acid based natural product harzianic acid and its stereoisomers.

Sinapic Acid Derivatives as Potential Anti-Inflammatory Agents: Synthesis and Biological Evaluation

Transcription factor NF-κB and relevant cytokines IL-6 and IL-8 play a pivotal role in thepathogenesis of inflammation. Sinapic acid is a natural product and was demonstrated to possessanti-inflammatory activity. In this paper, we synthesized a series of sinapic acid derivativesand evaluated their anti-inflammatory effects. The result suggested that all of the targetscompounds 7a-j inhibit NF-κ...

Ravynic acid, an antibiotic polyeneyne tetramic acid from Penicillium sp. elucidated through synthesis.

A new antibiotic natural product, ravynic acid, has been isolated from a Penicillium sp. of fungus, collected from Ravensbourne National Park. The 3-acylpolyenyne tetramic acid structure was definitively elucidated via synthesis. Highlights of the synthetic method include the heat induced formation of the 3-acylphosphorane tetramic acid and a selective Wittig cross-coupling to efficiently prepa...

Harzianic acid: a novel siderophore from Trichoderma harzianum.

Agriculture-relevant microorganisms are considered to produce secondary metabolites during processes of competition with other micro- and macro-organisms, symbiosis, parasitism or pathogenesis. Many different strains of the genus Trichoderma, in addition to a direct activity against phytopathogens, are well-known producers of secondary metabolites and compounds that substantially affect the met...

Total synthesis and absolute configuration of macrocidin A, a cyclophane tetramic acid natural product.

Sinapic Acid Derivatives as Potential Anti-Inflammatory Agents: Synthesis and Biological Evaluation

Transcription factor NF-κB and relevant cytokines IL-6 and IL-8 play a pivotal role in thepathogenesis of inflammation. Sinapic acid is a natural product and was demonstrated to possessanti-inflammatory activity. In this paper, we synthesized a series of sinapic acid derivativesand evaluated their anti-inflammatory effects. The result suggested that all of the targetscompounds 7a-j inhibit NF-κ...