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Synfacts 2016; 12(1): 0003
DOI: 10.1055/s-0035-1561001
DOI: 10.1055/s-0035-1561001
Synthesis of Natural Products and Potential Drugs
Synthesis of Portentol
Weitere Informationen
Publikationsverlauf
Publikationsdatum:
16. Dezember 2015 (online)

Significance
Cheng and Trauner report the asymmetric total synthesis of the polyketide portentol, isolated in 1967 from lichen Roccella Portentosa. The synthesis relies on a cascade sequence, mimicking the hypothetical biosynthesis.
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Comment
Fragment C was synthesized by means of an Evans aldol reaction. Oxidation of the primary alcohol, followed by aldol reaction with ketone G and deprotection, gave lactone H, which underwent oxidation, oxonium ion formation, and aldol reaction upon treatment with DMSO and TFAA.
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