[EN] PARTICLES, COMPOSITIONS, AND METHODS FOR OPHTHALMIC AND/OR OTHER APPLICATIONS<br/>[FR] PARTICULES, COMPOSITIONS ET PROCÉDÉS POUR APPLICATIONS OPHTALMIQUES ET/OU AUTRES APPLICATIONS
申请人:KALA PHARMACEUTICALS INC
公开号:WO2019055028A1
公开(公告)日:2019-03-21
This disclosure relates to particles, compositions, and methods that aid particle transport in mucus are provided. The particles, compositions, and methods may be used, in some instances, for ophthalmic and/or other applications.
Organocatalytic and Scalable Synthesis of the Anti-Influenza Drugs Zanamivir, Laninamivir, and CS-8958
作者:Junshan Tian、Jiankang Zhong、Yunsheng Li、Dawei Ma
DOI:10.1002/anie.201408138
日期:2014.12.8
Zanamivir, laninamivir, and CS‐8958 are three neuraminidase inhibitors that have been clinically used to combat influenza. We report herein a novel organocatalytic route for preparing these agents. Only 13 steps are needed for the assembly of zanamivir and laninamivir from inexpensive D‐araboascorbic acid by this synthetic route, which relies heavily on a thiourea‐catalyzed enantioselective Michael
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。
Method for Manufacturing Neuraminic Acid Derivatives
申请人:Daiichi Sankyo Company, Limited
公开号:US20140356625A1
公开(公告)日:2014-12-04
The present invention provides methods for manufacturing neuraminic acid derivatives.
[Means for solution]
Methods for manufacturing compounds represented by the formula (I):
[wherein R
1
represents a C
1
-C
19
alkyl group], or a pharmacologically acceptable salt thereof, using N-acetylneuraminic acid dihydrate as a starting raw material are provided.