Process for preparing 5,6,7,8-tetrahydro-6-(L-erythro-1',2'-dihy

Details Process for preparing 5,6,7,8-tetrahydro-6-(L-erythro-1',2'-dihy Process for preparing 5,6,7,8-tetrahydro-6-(L-erythro-1',2'-dihy

1985-02-21

1986-06-17

Daus, Donald G.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D47504

Patent

active

045957525

ABSTRACT:
A process for preparing tetrahydrobiopterin which is rich in the (6R)-form, which comprises hydrogenating L-erythrobiopterin in a basic medium in the presence of a platinum group catalyst. According to the process, tetrahydrobiopterin improved in (6R)/(6S) ratio can be easily obtained in the high yield.

REFERENCES:
patent: 2741608 (1956-04-01), Shive
patent: 4540783 (1985-09-01), Viscontini
Rylander, "Catalytic Hydrogenation Over Platinum Metals", Academic Press (1967), pp. 1-5.
"Helvetica Chim. Acta" 61, 2731 (1978).

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