Intermediates for synthesizing BH.sub.4 and its derivatives

Details Intermediates for synthesizing BH.sub.4 and its derivatives Intermediates for synthesizing BH.sub.4 and its derivatives

1990-04-27

1991-08-06

Daus, Donald G.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

C07D23947

Patent

active

050379810

ABSTRACT:
The present invention relates to intermediates for synthesizing BH.sub.4 and derivatives thereof. The intermediates are shown as follows; ##STR1## wherein R.sub.1 is a hydrogen atom, alkyl, aralkyl, or aryl group; R.sub.2 is an alkyl, hydroxyalkyl, or polyhydroxyalkyl group; R.sub.3 and R.sub.4 are the same or different and represent alkyl, aralkyl, or aryl group; R.sub.5, R.sub.6, R.sub.7, and R.sub.8 are the same or different and represent a hydrogen atom or acyl group; R.sub.9 is an alkyl, aralkyl, or aryl group; R.sub.10 and R.sub.11 are the same or different and represent a hydrogen atom or acyl group; n is an integer of 5 or less; and HX is an acid. The invention also relates to a process for the preparation of L-biopterin.

REFERENCES:
patent: 4939252 (1990-07-01), Schwartz
Chemistry of Organic Synthesis, vol. 46, No. 6 (1988), p. 570.

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