Therapeutic valine esters of acyclovir and pharmaceutically acceptable
申请人:Burroughs Wellcome Co.
公开号:US04957924A1
公开(公告)日:1990-09-18
The present invention relates to certain amino acid exters of the purine nucleoside acyclovir, pharmaceutically acceptable salts thereof and their use in the treatment of herpes virus infections. The invention also includes pharmaceutical formulations and processes for the preparation of such compounds.
[EN] NOVEL PSEUDOMORPH OF VALACICLOVIR HYDROCHLORIDE<br/>[FR] NOUVEAU PSEUDOMORPHE D'HYDROCHLORURE DE VALACICLOVIR
申请人:MATRIX LAB LTD
公开号:WO2006035452A1
公开(公告)日:2006-04-06
The present invention relates to a stable novel pseudomorph of Valaciclovir hydrochloride and the process for its preparation by the debenzylation of 2-[(2-Amino-l,6-dihydro-6-oxo-9H-purin-9-yl)methoxy]ethyl N- [(benzyloxy)carbonyl]L-valinate by bubbling hydrogen gas in presence of HCl, isolating the product in a mixture of ethanol and water followed by crystallization in aq.ethanol, drying under vacuum and allowing to adsorb moisture at ambient conditions.
[EN] PROCESS FOR THE PREPARATION OF VALACYCLOVIR HYDROCHLORIDE POLYMORPHIC FORM II<br/>[FR] MÉTHODE DE PRÉPARATION DE LA FORME POLYMORPHE II DU CHLORHYDRATE DE VALACYCLOVIR
申请人:MATRIX LAB LTD
公开号:WO2011158252A1
公开(公告)日:2011-12-22
The present invention relates to a process for the preparation of pure anhydrous crystalline Valacyclovir hydrochloride polymorphic form II