Intermediate compounds for the manufacture of fused...

Details Intermediate compounds for the manufacture of fused... Intermediate compounds for the manufacture of fused...

2007-05-16

2009-12-01

Coleman, Brenda L (Department: 1624)

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C544S231000, C544S354000, C544S350000, C544S344000, C544S346000

Reexamination Certificate

active

07626019

ABSTRACT:
Disclosed are processes for the preparation of fused piperazin-2-one derivatives of general formula (I)wherein the groups R1to R5, A1and A2have the meanings given in the claims and in the description, particularly the preparation of 7,8-dihydro-5H-pteridin-6-one derivatives and intermediates thereof.

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