Geschmack ist vorhersagbar: Mit FlavorMiner. FlavorMiner heißt das Tool, das IPB-Chemiker und Partner aus Kolumbien jüngst entwickelt haben. Das Programm kann, basierend auf maschinellem Lernen (KI), anhand der…
Seit Februar 2021 bietet Wolfgang Brandt, ehemaliger Leiter der Arbeitsgruppe Computerchemie am IPB, sein Citizen Science-Projekt zur Pilzbestimmung an. Dafür hat er in regelmäßigen Abständen öffentliche Vorträge zur Vielfalt…
In arbuscular mycorrhizal symbioses, root cortical cell plastids catalyze central processes regarding the transported metabolites on the one hand and molecular building blocks for symbiotic structures on the other. These metabolic tasks correlate with a strong proliferation and structural changes of the organelles. Future work will address the molecular factors responsible for these metabolic and structural changes.
Publikation
Wessjohann, L.; Skattebøl, L.; de Meijere, A.;New short syntheses of isoquinoline-4-carboxylic acid and 2-aza-3,3a-dihydroazulene-3a-carboxylic acid derivativesJ. Chem. Soc., Chem. Commun.1990574-576(1990)DOI: 10.1039/C39900000574
Cyclopropylideneacetates (2a,b) undergo a formal [2 + 4] cycloaddition with (diphenylmethylene)amine (DPMA-H)(1) to yield dihydro-1-phenylisoquinoline-4-carboxylate (8a) and 1-phenylisoquinoline-4-carboxylate (7b); the Michael adduct of DPMA-H onto (2b), on the other hand, under basic conditions gives 1-phenyl-2-aza-azulene-3a-carboxylate (12) exclusively.
Publikation
de Meijere, A.; Wessjohann, L.;Tailoring the Reactivity of Small Ring Building Blocks for Organic SynthesisSynlett199020-32(1990)DOI: 10.1055/s-1990-20975
The syntheses and reactivities of some new cyclopropane containing C5-building blocks with composite functionalities are described. Recent applications of cyclopropylideneacetates in short syntheses of spirocyclopropane-annulated heterocycles and cyclopropane-containing biologically active compounds are demonstrated. Cyclopropylacetylenes are employed as cyclopentane annulation reagents and are particularly useful in the construction of terpenoid frameworks. 1. Introduction 2. The Initial Experiment: 1-Chloro-1-(trichlorovinyl)cyclopropanes from Olefins 3. Cyclopropylideneacetates 4. Cyclopropylacetylenes 5. Conclusion