DIMERIC COMPOUNDS AND THIER USE AS ANTI-VIRAL AGENTS
申请人:JIN Betty
公开号:US20070225358A1
公开(公告)日:2007-09-27
The invention relates to compounds of general formula (I); in which R is an amino or guanidino group; R
2
is acetyl or trifluoroacetyl; X is CONH, NHCO or O; n is an integer from 2 to 6; and Y is C
2
-C
9
alkyl C
3-8
cycloalkyl, C
1
-C
4
alkoxyalkyl, an amino acid or dipeptide, or a pharmaceutically acceptable derivative thereof, methods for their preparation, pharmaceutical formulations containing them or their use in the prevention or treatment of a viral infection.
US7468388B2
申请人:——
公开号:US7468388B2
公开(公告)日:2008-12-23
Synthesis and characterization of 4(
<i>R</i>
)‐epimer impurities of zanamivir and laninamivir octanoate
The synthesis and characterization of compounds 7c and 8d, the 4(R)-epimer impurities of zanamivir and laninamivir octanoate, were reported for the first time. Their structures were confirmed by NMR and MS and distinguished from their corresponding active pharmaceutical ingredient (API) by coupling constant in 1H NMR and HPLC spectra. This work is of great significance for the drug-related substances
首次报道了扎那米韦和辛酸拉尼米韦的4( R )-差向异构体杂质化合物7c和8d的合成和表征。它们的结构通过 NMR 和 MS 确认,并通过1 H NMR 和 HPLC 光谱中的耦合常数与相应的活性药物成分 (API) 区分开来。该工作对扎那米韦和辛酸拉尼米韦中的药物相关物质分析具有重要意义。