Novel tocopheryl compounds XXV: synthesis and comparison of the para-quinones of all four homologous tocopherol model compounds and their 3,4-dehydro derivatives
Four tocopherol model compounds, the chroman-6-ols (1-4) having the typical substitution pattern of alpha-, beta-, gamma-, and delta-tocopherol (vitamin E), were oxidized to the corresponding para-quinones (5-8), and dehydrogenated to the 2H-chromen-6-ols (17-20) involving initial acetyl protection of the phenolic OH and deprotection as the last step. The chromenols were also converted into the para-quinones (21-24), which existed in the bicyclic hemiketal form, in contrast to the chromanol-derived, monocyclic quinones 5-8, the ketalization behavior agreeing well with computations on the DFT level. (c) 2007 Elsevier Ltd. All rights reserved.
PHARMACEUTICALLY ACTIVE COMPOSITIONS COMPRISING OXIDATIVE STRESS MODULATORS (OSM), NEW CHEMICAL ENTITIES, COMPOSITIONS AND USES
申请人:Basu Hirak S.
公开号:US20100297262A1
公开(公告)日:2010-11-25
Described herein are pharmaceutical compositions and medicaments, and methods of using such pharmaceutical compositions and medicaments in the treatment of inflammation and cancer.