Synthesis of racemic and chiral albicanol, albicanyl acetate and cyclozonarone: cytotoxic activity of ent-cyclozonarone
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Sociedade Brasileira de Química
Materia
Albicanol Abicanyl acetate Cyclozonarone Total synthesis Chiral synthesis
Date
2008Referencia bibliográfica
Delgado, V.; et al. Synthesis of racemic and chiral albicanol, albicanyl acetate and cyclozonarone: cytotoxic activity of ent-cyclozonarone. Journal of the Brazilian Chemical Society, 19(7): 1258-1263 (2014). [http://hdl.handle.net/10481/32917]
Sponsorship
Authors are grateful to Dirección de Investigación y Postgrado, Facultad de Química, Pontificia Universidad Católica de Chile, for financial support, to MECESUP grant UCH 0116 de la Red Nacional de Doctorado en Química for HRMS analyses and to Dr. Luis Espinoza for valuable help with spectroscopic assignments.Abstract
The total synthesis of racemic cyclozonarone ((±)-3) was achieved from E,E-farnesol (4) in an eight-step sequence in 6.6% overall yield. Albicanol ((±)-1) and its acetate ((±)-2) are intermediates. A similar sequence starting from natural (-)-drimenol (5) gave (+)-albicanol (1) and (+)-cyclozonarone (3) (42% and 11% yield, respectively). The cytotoxic activity of (+)-cyclozonarone was assayed and showed some selectivity towards MS-1 (mice endothelial cells). A síntese completa da mistura racêmica do cyclozonarone ((±)-3), foi obtida a partir do E,E-farnesol (4) em uma seqüência de oito passos com um rendimento geral de 6,6%. O albicanol ((±)-1) e seu acetato ((±)-2) são intermediários. Uma seqüência inicial, similar a partir do produto natural (-)-drimenol (5), produziu o(+)-albicanol (1) e o(+)-cyclozonarone (3) com 42% e 11%, respectivamente. A atividade citotóxica do composto(+)-cyclozonarone foi avaliada e mostrou alguma seletividade para MS-1 (células endoteliais de camundongos).