申请人:MediBeacon Inc.
公开号:US20210107881A1
公开(公告)日:2021-04-15
A process for preparing pyrimido[4,5-g]pteridine-2,4,7,9-tetraol, or a salt thereof, is provided. A process for the preparation of 3,6-diaminopyrazine-2,5-dicarboxylic acid, or a salt thereof, from pyrimido[4,5-g]pteridine-2,4,7,9-tetraol, or a salt thereof, is further provided. A process for preparing a substituted pteridine compound, or a salt thereof, is further provided. A process for the preparation of a N-substituted 3,6-diaminopyrazine-2,5-dicarboxylic acid from a substituted pteridine compound, or a salt thereof, is further provided.
提供一种制备嘧啶并[4,5-g]喹啉-2,4,7,9-四醇或其盐的过程。进一步提供一种从嘧啶并[4,5-g]喹啉-2,4,7,9-四醇或其盐制备3,6-二氨基吡嗪-2,5-二羧酸或其盐的过程。进一步提供一种制备取代喹啉化合物或其盐的过程。进一步提供一种从取代喹啉化合物或其盐制备N-取代的3,6-二氨基吡嗪-2,5-二羧酸的过程。