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Über Pterinchemie 80. Mitteilung Die Herstellung von (6RS)Tetra- und (6RS)Pentaacetyl-5,6,7,8-tetrahydro-L-bioplerinen

✍ Scribed by Subhendu Narayaa Ganguly; Max Viscontini

Publisher
John Wiley and Sons
Year
1982
Tongue
German
Weight
191 KB
Volume
65
Category
Article
ISSN
0018-019X

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✦ Synopsis

Preparation of (6__RS__)Tetra‐ and (6__RS__)‐Pentaacetyl‐5,6,7,8‐tetrahydro‐L‐biopterines

Boiling of (6__RS__) l′‐O,2′‐O,2‐N‐triacetyl‐5,6,7,8‐tetrahydro‐L‐biopterine in acetic anhydride as described in [2], leads to a mixture of the diastereoisomeric (6__R__)‐ and (65)‐l′‐O,2′‐O,2‐N‐,5,8‐pentaacetyl‐5,6,7,8‐L,‐biopterines. One of the diastereoisomers can be obtained as pure crystals. It corresponds to the pentaacetate of the natural (6__R__)‐ or (6__S__).,5,6,7,8‐tetrahydro‐L‐biopterine. For the preparation of the earlier described (6__RS__)‐ and (6__S__)‐tetraacetyl‐tetrahydro‐L‐biopterines [2] improved conditions are reported.

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