Methods for synthesis of carotenoids, including analogs, derivatives, and synthetic and biological intermediates
申请人:Lockwood Samuel F.
公开号:US20080221377A1
公开(公告)日:2008-09-11
A method for synthesizing intermediates for use in the synthesis of carotenoid synthetic intermediates, carotenoid analogs, and/or carotenoid derivatives. The carotenoid analog, derivative, or intermediate may be administered to a subject for the inhibition and/or amelioration of any disease that involves production of reactive oxygen species, reactive nitrogen species, radicals and/or non-radicals. In some embodiments, the invention may include methods for synthesizing chemical compounds including an analog or derivative of a carotenoid. Carotenoid analogs or derivatives may include acyclic end groups. In some embodiments, a carotenoid analog or derivative may include at least one substituent. The substituent may enhance the solubility of the carotenoid analog or derivative such that the carotenoid analog or derivative at least partially dissolves in water.
Carotenoids and related compounds. Part XVI. Structural and synthetic studies on spirilloxanthin, chloroxanthin, spheroidene, and spheroidenone
作者:M. S. Barber、L. M. Jackman、P. S. Manchand、B. C. L. Weedon
DOI:10.1039/j39660002166
日期:——
The structure of spirilloxanthin (rhodoviolascin) was unambiguously determined by degradative and nuclear magnetic resonance spectral studies. Similar studies indicated the structures of chloroxanthin, spheroidene (“Pigment Y”), and spheroidenone (“Pigment R”); these structures have been confirmed by total syntheses.
A variety of allylic acetates were treated with sodium bromide and triphenylphosphine in the presence of 5 mol% of [Pd(PPh3)4] to give the phosphonium salts, which were converted to the ylids in situ and allowed to react with various aldehydes to afford the corresponding conjugated olefins in good yields. Furthermore, this procedure was applied to the synthesis of an insecticidal substance, Pellitorine
Carotenoids and related compounds. Part XV. The structure and synthesis of phytoene, phytofluene, ζ-carotene, and neurosporene
作者:J. B. Davis、L. M. Jackman、P. T. Siddons、B. C. L. Weedon
DOI:10.1039/j39660002154
日期:——
Structures have been established for the polyenes, phytoene, phytofluene, ζ-carotene and neurosporene by spectral studies and synthesis. The stereochemistry of these polyenes is discussed.