61394-49-8Relevant academic research and scientific papers
An efficient synthesis of a spirocyclic oxindole analogue
Teng, Dawei,Zhang, Hongxing,Mendonca
, p. 700 - 706 (2006)
An efficient, scaleable synthesis approach towards the spirocyclic oxindole analogue 1′-(tert-butoxycarbonyl)-2-oxospiro[indoline-3,4′- piperidine]-5-carboxylic acid (1) is described. The key steps are dianion alkylation and cyclization of ethyl 2-oxindoline-5-carboxylate (4) and demethylation of the resulting spirocyclic oxindole ethyl 1′-methyl-2- oxospiro[indoline-3,4′-piperidine]-5-carboxylate (5). The target compound was obtained in an overall yield of 35 % over eight steps without resorting to chromatographic purification.
Dihydroindolone compounds, a process for their preparation and pharmaceutical compositions containing them
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Page/Page column 7, (2011/02/26)
Compounds of formula (I): wherein: m and n represent 1 or 2,A represents a pyrrolyl group,X represents a C(O), S(O) or SO2 group,R1 and R2 represent an alkyl group or, together with the nitrogen atom carrying them, form a heterocyclic group,R3 and R4, together with the atoms carrying them, form a heterocyclic group,R5 represents a hydrogen atom or an alkyl group,R6 represents a hydrogen atom or a halogen atom. Medicinal products containing the same which are useful in treating cancer.
