[EN] ENVIRONMENT-FRIEND PROCESS FOR THE SYNTHESIS OF QUATERNARY AMMONIO-STERO?DS<br/>[FR] PROCEDE NON POLLUANT DE SYNTHESE D'AMMONIO-STEROIDES QUATERNAIRES
申请人:RICHTER GEDEON VEGYESZET
公开号:WO2006038047A1
公开(公告)日:2006-04-13
The invention relates to a new, environment-friend process for the synthesis of the known 4,4'-[3α,17β-bis(acetoxy)-5α-androstane-2β,l6β-diyl]-bis(l,l-dimethyl-ρiρerazinium) dibromide of formula (I) (from now on pipecuronium bromide) and l-[3α,17β-bis(acetoxy)-2β-(l-piperidinyl)-5α-androstane-16β-yl]-l-methyl-piperidinium bromide of formula (II) (from now on vecuronium bromide). Furthermore the invention relates to the new intermediates of formula (III) and formula (IV) of the process, wherein the meaning of X is benzenesulfonate - in given case para-substituted with a methyl or a nitro group or a bromine atom - methanesulfonate, ethanesulfonate or trifluoromethanesulfonate ion.
[EN] NOVEL METHOD FOR SYNTHESIS OF NEUROMUSCULAR BLOCKING AGENTS<br/>[FR] NOUVEAU PROCÉDÉ DE SYNTHÈSE D'AGENTS DE BLOCAGE NEUROMUSCULAIRES
申请人:NEON LAB LTD
公开号:WO2016009442A1
公开(公告)日:2016-01-21
The invention discloses a novel method for preparing neuromuscular blocking agents using aryl esters as a reagent of di-acylation as well as highly regioselective mono-acylation of androstane-diols.
[EN] NOVEL PROCESS FOR QUATERNIZATION OF (2P,3A,5A,16P,17P)-2,16-BISPIPERIDINO-3,17-DIACETOXY-5-ANDROSTANE<br/>[FR] NOUVEAU PROCÉDÉ DE QUATERNISATION DE (2?,3?,5?,16?,17?)-2, 16-BISPIPÉRIDINO-3,17-DIACÉTOXY-5-ANDROSTANE
申请人:NEON LAB LTD
公开号:WO2012147090A1
公开(公告)日:2012-11-01
The invention discloses a novel process for quaternization of (2β,3α,5α,16β,17β)-2,16-bispiperidino-3,17-diacetoxy-5-androstane with methyl bromide in presence of a cyclic ether. The invention further discloses purification of quaternary salt to provide highly pure vecuronium bromide with unspecified impurity level not more than 0.1%.
Acid addition salts of 16-beta-monoquaternary ammonium derivatives of 2-beta, 16-beta-bis-piperidino-androstanes and pharmaceutical preparations containing same
申请人:AKZO N.V.
公开号:EP0008824B1
公开(公告)日:1982-04-28
Vecuronium bromide and its advanced intermediates: A crystallographic and spectroscopic study
commercially available 3β-hydroxy-5α-androstan-17-one (epiandrosterone), implementing some modifications to a traditional synthetic procedure. A careful NMR study allowed the complete assignment of the 1H, 13C, and 15N NMR signals of vecuronium bromide and its synthetic intermediates. The structural and stereochemicalcharacterization of 2β,16β-bispiperidino-5α-androstane-3α,17β-diol, the first advanced synthetic
维库溴铵 (Piperidinium, 1-[(2β,3α,5α,16β,17β)-3,17-bis(acetyloxy)-2-(1-piperidinyl)androstan-16-yl]-1-methyl-, bromide; Norcuron®) 自 1982 年投放市场以来,已作为神经肌肉阻滞剂广泛用于麻醉学实践。然而,仍然缺乏对其先进合成中间体的详细晶体学和 NMR 分析。因此,为了填补这一文献空白,维库溴铵从市售的 3β-羟基-5α-androstan-17-one(表雄酮)开始制备,对传统合成程序进行了一些修改。仔细的 NMR 研究允许完全分配1 H、13 C 和15维库溴铵及其合成中间体的 N NMR 信号。2β,16β-bispiperidino-5α-androstane-3α,17β-diol 是第一个在最终构型中携带所有立体中心的先进合成中间体的结构和立体化学表征,通过单晶