Generation of Carbonyl Compounds from Oximes through Electrooxidative Deoximation
作者:Yeliang Xue、Shaozhong Wang
DOI:10.1021/acs.joc.3c02631
日期:2024.3.15
electrochemical protocol was developed to generate carbonylcompoundsfrom oximes with excellent functional group compatibility. Mechanistic experimental studies support the idea that an electrooxidative pathway of oximes might be involved, in which the water may serve as an oxygen nucleophile and the oxygen source for the final carbonylcompounds.
Occurrence and seasonal variation of 19-norcholest-4-EN-3-one and 3β-monohydroxy sterols in the Californian gorgonian, Muricea californica
作者:S. Popov、R.M.K. Carlson、Carl Djerassi
DOI:10.1016/0039-128x(83)90093-4
日期:1983.4
The first natural occurrence of 19-norcholestenone is reported, together with 17 sterols and one other delta 4-3-ketone in the extracts of the Californian gorgonian, Muricea californica (Aurivillius). Six additional demethyl sterols and five additional 4-monomethyl sterols which remain unidentified were also detected. Lipid extracts of M. californica from a winter and summer collection were split by various chromatographic methods into free sterol, steryl ester, and steryl conjugate fractions. Sterol compositions (determined by CG and CG-MS) of each fraction, subsequent to hydrolysis, are tabulated and discussed with respect to plausible origins of observed variations. The possible relationship of the Muricea 19-nor-steroidal ketone to other naturally occurring 19-nor-steroids is discussed.
SUGINOME, HIROSHI;SENBOKU, HISANORI;YAMADA, SHINJI, J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N, C. 2199-2205