64954-45-6Relevant academic research and scientific papers
Biosynthetically Guided Structure–Activity Relationship Studies of Merochlorin A, an Antibiotic Marine Natural Product
López-Pérez, Borja,Pepper, Henry P.,Ma, Rong,Fawcett, Benjamin J.,Pehere, Ashok D.,Wei, Qi,Ji, Zengchun,Polyak, Steven W.,Dai, Huanqin,Song, Fuhang,Abell, Andrew D.,Zhang, Lixin,George, Jonathan H.
, p. 1969 - 1976 (2017)
The onset of new multidrug-resistant strains of bacteria demands continuous development of antibacterial agents with new chemical scaffolds and mechanisms of action. We present the first structure–activity relationship (SAR) study of 16 derivatives of a s
Mechanistic evidence for an α-oxoketene pathway in the formation of β-ketoamides/esters via Meldrum's acid adducts
Xu, Feng,Armstrong III, Joseph D.,Zhou, George X.,Simmons, Bryon,Hughes, David,Ge, Zhihong,Grabowski, Edward J. J.
, p. 13002 - 13009 (2004)
A practical, one-pot process for the preparation of β-keto amides via a three-component reaction, including Meldrum's acid, an amine, and a carboxylic acid, has been developed. Key to development of an efficient, high-yielding process was an in-depth understanding of the mechanism of the multistep process. Kinetic studies were carried out via online IR monitoring and subsequent principal component analysis which provided a means of profiling the concentration of both the anionic and free acid forms of the Medrum's adduct 6 in real time. These studies, both in the presence and absence of nucleophiles, strongly suggest that formation of β-keto amides from acyl Meldrum's acids occurs via α-oxoketene species 2 and rule out other possible reaction pathways proposed in the literature, such as via protonated α-oxoketene intermediates 3 or nucleophilic addition-elimination pathways.
Biomimetic total synthesis of (±)-merochlorina
Pepper, Henry P.,George, Jonathan H.
, p. 12170 - 12173 (2013)
Inspired: The proposed biosynthetic pathway toward the potent antibiotic meroterpenoid (±)-merochlorinA inspired its concise total synthesis. The key steps in the synthesis are a one-pot aromatization-alkylation reaction, followed by a biomimetic oxidativ
Biomimetic synthesis of (±)-merochlorin B
Meier, Robin,Strych, Sebastian,Trauner, Dirk
supporting information, p. 2634 - 2637 (2014/06/09)
A short total synthesis, guided by biosynthetic considerations, of racemic merochlorin B is presented. The formation of its isomer, merochlorin A, was not observed under the conditions. Key steps include a directed ortho-metalation (DoM), a selective demethylation, an ortho-allylation, and an oxidative [3 + 2]-cycloaddition mediated by an iodine(III) reagent.
