17639-66-6Relevant articles and documents
Catalyst-Controlled Chemodivergent Reactions of 2-Pyrrolyl-α-diazo-β-ketoesters and Enol Ethers: Synthesis of 1,2-Dihydrofuran Acetals and Highly Substituted Indoles
France, Stefan,Guerra Faura, Gabriel,Nguyen, Tena
supporting information, p. 10088 - 10104 (2021/07/31)
A catalyst-controlled, chemodivergent reaction of pyrrolyl-α-diazo-β-ketoesters with enol ethers is reported. While Cu(II) catalysts selectively promoted a [3 + 2] cycloaddition to provide pyrrolyl-substituted 2,3-dihydrofuran (DHF) acetals, dimeric Rh(II) catalysts afforded 6-hydroxyindole-7-carboxylates via an unreported [4 + 2] benzannulation. The choice of enol ether proved to be crucial in determining both regioselectivity and yield of the respective products (up to 91% yield for Cu(II) and 82% for Rh(II) catalysis). Furthermore, the DHF acetals were shown to serve as precursors to 7-hydroxyindole-6-carboxylates (isomeric to the indoles formed from Rh) and highly substituted furans in the presence of Lewis acids. Thus, from a common pyrrolyl-α-diazo-β-ketoester, up to three unique heterocyclic scaffolds can be achieved based on catalyst selection.
BRANIMYCIN DERIVATIVES AND THEIR USE FOR THE TREATMENT OF BACTERIAL INFECTIOUS DISEASES
-
, (2015/03/16)
Compounds are disclosed that have a formula represented by Formula (I) wherein A, B, R1, R2 and R3 are as defined herein. Novel compounds of the invention may be prepared as a pharmaceutical composition, and may be useful in the treatment of infectious diseases, in particular bacterial infectious diseases. The compounds may be active against a specific enzyme in the bacterial DNA replicative process, DNA polymerase IIIE.
Synthesis of a novel pyrrole oxazole analogue of the insecticide pirate
Loughlin, Wendy A.,Murphy, Michelle E.,Elson, Kathryn E.,Henderson, Luke C.
, p. 227 - 232 (2007/10/03)
The pyrrole oxazole 4 is a novel analogue of the broad-spectrum insecticide and miticide pirate 2. The expedient synthesis of pyrrole oxazole 4 in six steps from pyrrole is reported using a synthetic route that could have potential for the solution-phase
