Method for producing L-biopterin
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United States of America Patent
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Apr 22, 2008
Grant Date -
Jun 29, 2006
app pub date -
Feb 28, 2005
filing date -
Dec 27, 2004
priority date (Note) -
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Abstract
To provide a method for producing L-biopterin on a large industrial scale by using a reagent which is inexpensive and easy to handle, without requiring a use of any particular equipment or plants.A method for porducing a biopterin derivative represented by the formula (6): ##STR00001## wherein R.sup.1 and R.sup.2, which are the same or different from each other, each represents a hydrogen atom, an alkyl group, or an aryl group, comprising: reacting a compound belonging to triacetoxy-5-deoxy-L-arabinose phenylhydrazones represented by the formula (4): ##STR00002## wherein R.sup.1 and R.sup.2 are the same as defined above, with 6-hydroxy-2,4,5-triaminopyrimidine (5) under catalytic influence of a Lewis acid in an aqueous solvent.
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