Ozonolysis of Bicyclic 1,2-Dioxines: Initial Scope and Mechanistic Insights
作者:Nicole M. Cain、Edward R. T. Tiekink、Dennis K. Taylor
DOI:10.1021/jo3001518
日期:2012.4.20
The ozonolysis of bicyclic 1,2-dioxines was investigated using a variety of 1,4-disubstituted 1,2-dioxines along with a 1,3-dialkyl and steroidal example, with yields ranging from moderate to excellent. Two different pathways were observed upon reaction of the 1,4-disubstituted 1,2-dioxines with ozone; one pathway saw the “expected” results, that is, cleavage of the olefinic moiety with generation
作者:Gary H. Posner、Xueliang Tao、Jared N. Cumming、Donna Klinedinst、Theresa A. Shapiro
DOI:10.1016/0040-4039(96)01625-5
日期:1996.9
Three or four step chemical synthesis and in vitro antimalarial testing showed crystalline, thermally stable, bicyclic endoperoxides 3c and 4c to be potent antimalarials, having approximately 15% of the antimalarial activity of the clinically used, complex, sesquiterpene, lactone, natural product artemisinin (qinghaosu, 1). A novel mechanism involving reactive alkylating agents is proposed to account
Synthesis of Polycyclic 1,2-Dioxanes from Endoperoxides
作者:Charles W. Jefford、Harald Eschenhof、Gérald Bernardinelli
DOI:10.3987/com-97-s(n)14
日期:——
Evidence for a chair cyclohexane-1,4-radical cation intermediate in the single electron-transfer-induced Cope rearrangement of 2,5-diaryl-1,5-hexadienes