Sulfate of 5,6,7,8-tetrahydro-L-erythro-biopterin and process fo

Details Sulfate of 5,6,7,8-tetrahydro-L-erythro-biopterin and process fo Sulfate of 5,6,7,8-tetrahydro-L-erythro-biopterin and process fo

1985-03-18

1987-03-10

Warden, Robert J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D47504

Patent

active

046491970

ABSTRACT:
A sulfate of tetrahydrobiopterin having the formula (I): ##STR1## and a process for preparing the same, which comprises crystallizing tetrahydrobiopterin from an aqueous medium containing sulfuric acid. The sulfate of the (6R)-form of (1) has a high crystallinity and the process easily gives a sulfate of the (6R)-form

REFERENCES:
patent: 3468886 (1969-09-01), Mosher
patent: 4540783 (1985-09-01), Viscontini
patent: 4595752 (1986-06-01), Azuma
Matsuura Chemical Abstracts, 101:130486c, (1984).
S. W. Baily et al, J. Biological Chem., 253, 1598 (1978).
Matsuura et al, J. Biochem. 87, 951 (1980).
M. Viscontini et al, Helveta Chim. Acta, 65, 1090 (1982).

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