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- W2078415595 abstract "Abstract Condensation of a bis(acetoxyethyl)pyrromethane dicarboxylic acid (11d) with a diformylpyrro-ketone (12b) afforded a bis(acetoxyethyl)-γ-meso-hydroxyporphyrin (13d) which was converted into the related bis(chloroethyl)-γ-benzoyloxyporphyrin (14f). The Zn complex of the latter was transformed by brief treatment with base, followed by chloromethylethyl ether into the zinc bis(chloroethyl)-γ-ethoxy-methoxyporphyrin (20b). Dehydrochlorination with potassium t-butoxide in t-butanol, and acid catalysed demetallation and deprotection then afforded the somewhat unstable blue γ-oxyprotoporphyrin dimethyl ester (21). The Fe-complex of the latter readily underwent oxidative ring opening by aerial oxidation in pyridine, and after demetallation gave biliverdin IXγ (pterobilin) dimethyl ester (22)." @default.
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- W2078415595 date "1983-01-01" @default.
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- W2078415595 title "Synthesis of biliverdin IXγ (pterobilin)" @default.
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- W2078415595 doi "https://doi.org/10.1016/s0040-4020(01)88698-1" @default.
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