[EN] METHOD OF FORMING OSELTAMIVIR AND DERIVATIVES THEREOF<br/>[FR] PROCÉDÉ DE FORMATION D'OSELTAMIVIR ET DE SES DÉRIVÉS ET APPLICATIONS CORRESPONDANTES
申请人:UNIV NANYANG
公开号:WO2009078813A1
公开(公告)日:2009-06-25
A process is provided for the synthesis of 4,5-diamino cyclohexene carboxylate ester (1): or a pharmaceutically acceptable salt thereof. R1 - R3 are a silyl-, an aliphatic, alicyclic, aromatic, arylaliphatic, or an arylalicyclic group. R4, R11 and R12 are H, a silyl-group, an aliphatic, alicyclic, aromatic, arylaliphatic, or an arylalicyclic group. 3,4-Dihydropyran compound (9): with R5 and R6 being suitable protecting groups, is reacted to form aldehyde (4): which is oxidized and converted to N-substituted carbamate (3): with R7 being a suitable protecting group. (3) is, via oxazolinidone (13): converted to azido carboxylate ester (2): and then to 4,5-diamino cyclohexene carboxylate ester (1).
METHOD OF FORMING OSELTAMIVIR AND DERIVATIVES THEREOF
申请人:Liu Xuewei
公开号:US20110021762A1
公开(公告)日:2011-01-27
A process is provided for the synthesis of 4,5-diamino cyclohexene carboxylate ester (1): or a pharmaceutically acceptable salt thereof. R
1
-R
3
are a silyl-, an aliphatic, alicyclic, aromatic, arylaliphatic, or an arylalicyclic group. R
4
, R
11
and R
12
are H, a silyl-group, an aliphatic, alicyclic, aromatic, arylaliphatic, or an arylalicyclic group. 3,4-Dihydropyran compound (9): with R
5
and R
6
being suitable protecting groups, is reacted to form aldehyde (4): which is oxidized and converted to N-substituted carbamate (3): with R
7
being a suitable protecting group. (3) is, via oxazolinidone (13): converted to azido carboxylate ester (2): and then to 4,5-diamino cyclohexene carboxylate ester (1).