Invention Grant
US09254341B2 Methods of manufacture of pteroyl-amino acid-fluorescent dyes 有权
蝶啶氨基酸荧光染料的制备方法

Methods of manufacture of pteroyl-amino acid-fluorescent dyes
Abstract:
The present invention discloses a process for preparing a compound having the formula Including Reacting a compound of the formula 1: with a compound of the formula: in the presence of a polar solvent and trifluoroacetic acid to provide a compound of the formula: or a racemic mixture thereof; and further reacting the compound of the formula: or a racemic mixture thereof; with sodium hydroxide and a compound of the formula: wherein R1 and R2 are as defined above.
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