A REGIOSELECTIVE SYNTHESIS OF METHYL 7-AMINO-3-PHENYLTHIENO-[2,3-b]PYRAZINE-6-CARBOXYLATE
摘要:
A practical synthesis of methyl 7-amino-3-phenylthieno[2,3-b]pyrazine-6-carboxylate (1) has been achieved via a regioselective synthesis of 3-cyano-5-phenyl-3-phenylthiopyrazine (5a), by condensing 1,1 -diethoxyacetophenone with 2,3-diamino-3-phenylthioacrylonitrile.
A REGIOSELECTIVE SYNTHESIS OF METHYL 7-AMINO-3-PHENYLTHIENO-[2,3-b]PYRAZINE-6-CARBOXYLATE
摘要:
A practical synthesis of methyl 7-amino-3-phenylthieno[2,3-b]pyrazine-6-carboxylate (1) has been achieved via a regioselective synthesis of 3-cyano-5-phenyl-3-phenylthiopyrazine (5a), by condensing 1,1 -diethoxyacetophenone with 2,3-diamino-3-phenylthioacrylonitrile.
PROCESS FOR PREPARING SUBSTITUTED PYRAZINE COMPOUNDS
申请人:Abbott Laboratories
公开号:EP1023278A1
公开(公告)日:2000-08-02
PROCESS FOR PREPARING REGIOSPECIFIC SUBSTITUTED PYRAZINE ISOMERS
申请人:ABBOTT LABORATORIES
公开号:EP1115710A1
公开(公告)日:2001-07-18
[EN] PROCESS FOR PREPARING SUBSTITUTED PYRAZINE COMPOUNDS<br/>[FR] PROCEDE DE PREPARATION DE COMPOSES DE PYRAZINE SUBSTITUES
申请人:ABBOTT LABORATORIES
公开号:WO1999019314A1
公开(公告)日:1999-04-22
(EN) The present invention relates to novel intermediate, processes, and novel pyrazine compounds which are ultimately useful in the preparation of chemicals and pharmaceuticals.(FR) La présente invention concerne de nouveaux intermédiaires, des procédés et de nouveaux composés de pyrazine qui présentent une grande utilité dans la préparation de produits chimiques et pharmaceutiques.
[EN] PROCESS FOR PREPARING REGIOSPECIFIC SUBSTITUTED PYRAZINE ISOMERS<br/>[FR] PROCEDE DE PREPARATION D'ISOMERES REGIOSPECIFIQUES DE PYRAZINE SUBSTITUEE
申请人:ABBOTT LAB
公开号:WO2000010983A1
公开(公告)日:2000-03-02
The present invention relates to a process of producing specific isomers of substituted pyrazine compounds, substituted thieno[b]pyrazine, substituted pteridins, compounds, and derivatives thereof. The regiospecific substituted pyrazine compounds are useful in the preparation of pharmaceuticals, including compounds useful in treating benign prostatic hyperplasia.