Discovery of 8-methoxypyrazino[1,2-a]indole as a new potent antiproliferative agent against human leukemia K562 cells. a structure-activity relationship study was written by Romagnoli, Romeo;Baraldi, Pier Giovanni;Carrion, Maria Dora;Cruz-Lopez, Olga;Cara, Carlota Lopez;Preti, Delia;Tabrizi, Mojgan Aghazadeh;Balzarini, Jan;Hamel, Ernest;Fabbri, Enrica;Gambari, Roberto. And the article was included in Letters in Drug Design & Discovery in 2009.Formula: C10H8FNO2 This article mentions the following:
Identification of novel and selective anticancer agents remains an important and challenging goal in pharmacol. research. The indole nucleus, frequently encountered as a mol. fragment in natural products and pharmaceutically active compounds, was employed as the initial building block for the synthesis of a series of pyrazino[1,2-a]indoles 1a-k, variably substituted at the 6, 7, 8 and 9-positions. Compound 1e (I), bearing the methoxy group at the 8-position of the pyrazino[1,2-a]indole nucleus was identified as a novel potent antiproliferative agent against the human chronic myelogenous leukemia K562 cell line, but it was much less active against several other cancer cell lines. Comparison of positional isomers indicated that moving the methoxy group from the 8- to the 7- or 6-position, to furnish compounds 1f and 1g, resp., yielded inactive compounds The anal. of structure-activity relationships observed in the series of investigated compounds may represent the basis for the design of more active mols. In the experiment, the researchers used many compounds, for example, Methyl 5-fluoro-1H-indole-2-carboxylate (cas: 167631-84-7Formula: C10H8FNO2).
Methyl 5-fluoro-1H-indole-2-carboxylate (cas: 167631-84-7) belongs to indole derivatives. Indole, first isolated in 1866, and it is commonly synthesized from phenylhydrazine and pyruvic acid, although several other procedures have been discovered. It is used in perfumery and in making tryptophan, an essential amino acid, and indoleacetic acid (heteroauxin), a hormone that promotes the development of roots in plant cuttings.Formula: C10H8FNO2
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles