نتایج جستجو برای: heterocyclization
تعداد نتایج: 167 فیلتر نتایج به سال:
Comparative analysis of related biosynthetic gene clusters can provide new insights into the versatility of these pathways and allow the discovery of new natural products. The freshwater cyanobacterium Microcystis aeruginosa NIES298 produces the cytotoxic peptide microcyclamide. Here, we provide evidence that the cyclic hexapeptide is formed by a ribosomal pathway through the activity of a set ...
The method of electrophilic intramolecular cyclization is widely used for the synthesis condensed thienopyrimidine derivatives. In this work, regioselectivity process terminally substituted allylic derivatives, but-1-enyl and propargyl thioethers with p-methoxyphenyltellurttrichloride was investigated.
 It established that as a result tellurium-induced butenyl 5,6-dimethyl-3-phenylthieno[2...
The novel heterocyclization of 5-(2-aminophenyl)-1H-tetrazole with potassium ethylxanthogenate or carbon disulfide was proposed. The potassium salt of the tetrazolo[1,5-c]quinazoline-5-thione was subsequently modified by alkylation with proper halogen derivatives to (tetrazolo[1,5-c]quinazolin-5-ylthio)alkyls, N,N-dialkylethylamines, 1-aryl-2-ethanones, 1-(alkyl)aryl-2-ethanols, carboxylic acid...
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