Four new estrone derivatives were isolated after treatment of estrone 3-methyl ether (3-methoxyestra-1,3,5(10)-trien-17-one (3) with tert-butyl hydroperoxide and cobalt acetate. Three of the four steroidal compounds - the 9α-(tert-butylperoxy)-6-one 4, the 9α-hydroxy-6-one 5, and the 9β-hydroxy-6-one 7-originated from oxidation at the 6- and 9-positions. In contrast, oxidation of 3 to a 9β-(tert-butylperoxy) compound afforded the 8-hydroxy-9-cyclodecanone derivative 6 through a molecular rearrangement involving the cleavage of the 8-9 bond. The structures of the compounds were secured by spectroscopic evidence including COSY, HSQC, and NOESY experiments combined with X-ray crystallographic analysis and molecular modeling studies.
Novel Estrones by Oxidation of the Benzylic Positions of the Estrane Skeleton with tert-Butyl Hydroperoxide and Cobalt Acetate / E. Modica, G. Bombieri, D. Colombo, N. Marchini, F. Ronchetti, A. Scala, L. Toma. - In: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. - ISSN 1434-193X. - :15(2003), pp. 2964-2971.
|Titolo:||Novel Estrones by Oxidation of the Benzylic Positions of the Estrane Skeleton with tert-Butyl Hydroperoxide and Cobalt Acetate|
MODICA, EMILIA (Primo)
BOMBIERI, GABRIELLA (Secondo)
SCALA, ANTONIO (Penultimo)
|Settore Scientifico Disciplinare:||Settore BIO/10 - Biochimica|
|Data di pubblicazione:||2003|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1002/ejoc.200300241|
|Appare nelle tipologie:||01 - Articolo su periodico|